1n4148w Switching Diode: Datasheet, Pinout, Replacements, and 1n4148w vs 1n4148ws

Sophie

Published: 22 April 2022 | Last Updated: 22 April 2022

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1N4148W-7

1N4148W-7

Diodes Incorporated

Standard Diode Rectifier Small Signal =< 200mA (Io), Any Speed 1.25V @ 150mA -65°C~150°C 1μA @ 75V 2-Termination Tape & Reel (TR) SOD-123 Surface Mount

Purchase Guide

Standard Diode Rectifier Small Signal =< 200mA (Io), Any Speed 1.25V @ 150mA -65°C~150°C 1μA @ 75V 2-Termination Tape & Reel (TR) SOD-123 Surface Mount

The 1N4148W is a surface mount fast Switching Diode with molded plastic case. This passage will provide you with a basic overview of the 1n4148w, including its descriptions, functions and specifications, alternative products, etc., to help you quickly understand what 1n4148w is.

This video is going to introduce IN4148  definition,symbol, and apps.

basics of IN4148 & zener diode-1

1n4148w Description

The 1N4148w is a standard silicon switching signal diode. It is one of the most popular and long-lived switching diodes because of its dependable specifications and low cost. Its name follows the JEDEC nomenclature. The 1N4148 is useful in switching applications up to about 100 MHz with a reverse-recovery time of no more than 4 ns.


1n4148w CAD Models

Symbol

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Footprint

footprint.jpg

3D Models

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1n4148w Pinout

The 1N4148W diode has a cathode (-) and anode (+). In the schematic symbol, the tip of the triangle with the line on top of it is the cathode. The cathode is marked on the body of a diode by a band as shown below.

pinout.jpg

The current can flow from only the anode to the cathode and never from the cathode to the anode - the 1N4148WS diode is like a one-way electric valve.


Specifications

Diodes Incorporated 1N4148W-7 technical specifications, attributes, parameters and parts with similar specifications to Diodes Incorporated 1N4148W-7.
  • Type
    Parameter
  • Mount

    In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.

    Surface Mount
  • Mounting Type

    The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.

    Surface Mount
  • Package / Case

    refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.

    SOD-123
  • Weight
    29.993795mg
  • Diode Element Material

    The parameter "Diode Element Material" refers to the specific semiconductor material used in the construction of a diode. This material determines the electrical characteristics and performance of the diode, including its forward voltage drop, reverse breakdown voltage, and switching speed. Common diode element materials include silicon, germanium, and gallium arsenide, each offering different advantages for various applications. The choice of material impacts the diode's efficiency, thermal stability, and overall suitability for specific electronic circuits.

    SILICON
  • Number of Elements
    1
  • Packaging

    Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.

    Tape & Reel (TR)
  • Published
    2006
  • JESD-609 Code

    The "JESD-609 Code" in electronic components refers to a standardized marking code that indicates the lead-free solder composition and finish of electronic components for compliance with environmental regulations.

    e3
  • Pbfree Code

    The "Pbfree Code" parameter in electronic components refers to the code or marking used to indicate that the component is lead-free. Lead (Pb) is a toxic substance that has been widely used in electronic components for many years, but due to environmental concerns, there has been a shift towards lead-free alternatives. The Pbfree Code helps manufacturers and users easily identify components that do not contain lead, ensuring compliance with regulations and promoting environmentally friendly practices. It is important to pay attention to the Pbfree Code when selecting electronic components to ensure they meet the necessary requirements for lead-free applications.

    yes
  • Part Status

    Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.

    Obsolete
  • Moisture Sensitivity Level (MSL)

    Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures

    1 (Unlimited)
  • Number of Terminations
    2
  • Termination

    Termination in electronic components refers to the practice of matching the impedance of a circuit to prevent signal reflections and ensure maximum power transfer. It involves the use of resistors or other components at the end of transmission lines or connections. Proper termination is crucial in high-frequency applications to maintain signal integrity and reduce noise.

    SMD/SMT
  • ECCN Code

    An ECCN (Export Control Classification Number) is an alphanumeric code used by the U.S. Bureau of Industry and Security to identify and categorize electronic components and other dual-use items that may require an export license based on their technical characteristics and potential for military use.

    EAR99
  • Terminal Finish

    Terminal Finish refers to the surface treatment applied to the terminals or leads of electronic components to enhance their performance and longevity. It can improve solderability, corrosion resistance, and overall reliability of the connection in electronic assemblies. Common finishes include nickel, gold, and tin, each possessing distinct properties suitable for various applications. The choice of terminal finish can significantly impact the durability and effectiveness of electronic devices.

    Matte Tin (Sn)
  • Max Operating Temperature

    The Maximum Operating Temperature is the maximum body temperature at which the thermistor is designed to operate for extended periods of time with acceptable stability of its electrical characteristics.

    150°C
  • Min Operating Temperature

    The "Min Operating Temperature" parameter in electronic components refers to the lowest temperature at which the component is designed to operate effectively and reliably. This parameter is crucial for ensuring the proper functioning and longevity of the component, as operating below this temperature may lead to performance issues or even damage. Manufacturers specify the minimum operating temperature to provide guidance to users on the environmental conditions in which the component can safely operate. It is important to adhere to this parameter to prevent malfunctions and ensure the overall reliability of the electronic system.

    -65°C
  • Additional Feature

    Any Feature, including a modified Existing Feature, that is not an Existing Feature.

    HIGH RELIABILITY
  • HTS Code

    HTS (Harmonized Tariff Schedule) codes are product classification codes between 8-1 digits. The first six digits are an HS code, and the countries of import assign the subsequent digits to provide additional classification. U.S. HTS codes are 1 digits and are administered by the U.S. International Trade Commission.

    8541.10.00.70
  • Capacitance

    Capacitance is a fundamental electrical property of electronic components that describes their ability to store electrical energy in the form of an electric field. It is measured in farads (F) and represents the ratio of the amount of electric charge stored on a component to the voltage across it. Capacitors are passive components that exhibit capacitance and are commonly used in electronic circuits for various purposes such as filtering, energy storage, timing, and coupling. Capacitance plays a crucial role in determining the behavior and performance of electronic systems by influencing factors like signal propagation, frequency response, and power consumption.

    2pF
  • Power Rating

    The "Power Rating" of an electronic component refers to the maximum amount of power that the component can handle or dissipate without being damaged. It is typically measured in watts and is an important specification to consider when designing or selecting components for a circuit. Exceeding the power rating of a component can lead to overheating, malfunction, or even permanent damage. It is crucial to ensure that the power rating of each component in a circuit is sufficient to handle the power levels expected during normal operation to maintain the reliability and longevity of the electronic system.

    400mW
  • Voltage - Rated DC

    Voltage - Rated DC is a parameter that specifies the maximum direct current (DC) voltage that an electronic component can safely handle without being damaged. This rating is crucial for ensuring the proper functioning and longevity of the component in a circuit. Exceeding the rated DC voltage can lead to overheating, breakdown, or even permanent damage to the component. It is important to carefully consider this parameter when designing or selecting components for a circuit to prevent any potential issues related to voltage overload.

    75V
  • Max Power Dissipation

    The maximum power that the MOSFET can dissipate continuously under the specified thermal conditions.

    400mW
  • Terminal Position

    In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.

    DUAL
  • Terminal Form

    Occurring at or forming the end of a series, succession, or the like; closing; concluding.

    GULL WING
  • Peak Reflow Temperature (Cel)

    Peak Reflow Temperature (Cel) is a parameter that specifies the maximum temperature at which an electronic component can be exposed during the reflow soldering process. Reflow soldering is a common method used to attach electronic components to a circuit board. The Peak Reflow Temperature is crucial because it ensures that the component is not damaged or degraded during the soldering process. Exceeding the specified Peak Reflow Temperature can lead to issues such as component failure, reduced performance, or even permanent damage to the component. It is important for manufacturers and assemblers to adhere to the recommended Peak Reflow Temperature to ensure the reliability and functionality of the electronic components.

    260
  • Current Rating

    Current rating is the maximum current that a fuse will carry for an indefinite period without too much deterioration of the fuse element.

    150mA
  • Time@Peak Reflow Temperature-Max (s)

    Time@Peak Reflow Temperature-Max (s) refers to the maximum duration that an electronic component can be exposed to the peak reflow temperature during the soldering process, which is crucial for ensuring reliable solder joint formation without damaging the component.

    40
  • Base Part Number

    The "Base Part Number" (BPN) in electronic components serves a similar purpose to the "Base Product Number." It refers to the primary identifier for a component that captures the essential characteristics shared by a group of similar components. The BPN provides a fundamental way to reference a family or series of components without specifying all the variations and specific details.

    1N4148W
  • Pin Count

    a count of all of the component leads (or pins)

    2
  • JESD-30 Code

    JESD-30 Code refers to a standardized descriptive designation system established by JEDEC for semiconductor-device packages. This system provides a systematic method for generating designators that convey essential information about the package's physical characteristics, such as size and shape, which aids in component identification and selection. By using JESD-30 codes, manufacturers and engineers can ensure consistency and clarity in the specification of semiconductor packages across various applications and industries.

    R-PDSO-G2
  • Qualification Status

    An indicator of formal certification of qualifications.

    Not Qualified
  • Element Configuration

    The distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals.

    Single
  • Speed

    In electronic components, "Speed" typically refers to the rate at which data can be processed or transferred within the component. It is a measure of how quickly the component can perform its functions, such as executing instructions or transmitting signals. Speed is often specified in terms of frequency, such as clock speed in processors or data transfer rate in memory modules. Higher speed components can perform tasks more quickly, leading to improved overall performance in electronic devices. It is an important parameter to consider when designing or selecting electronic components for specific applications.

    Small Signal =< 200mA (Io), Any Speed
  • Diode Type

    In electronic components, the parameter "Diode Type" refers to the specific type or configuration of a diode, which is a semiconductor device that allows current to flow in one direction only. There are various types of diodes, each designed for specific applications and functions. Common diode types include rectifier diodes, zener diodes, light-emitting diodes (LEDs), and Schottky diodes, among others. The diode type determines the diode's characteristics, such as forward voltage drop, reverse breakdown voltage, and maximum current rating, making it crucial for selecting the right diode for a particular circuit or application. Understanding the diode type is essential for ensuring proper functionality and performance in electronic circuits.

    Standard
  • Current - Reverse Leakage @ Vr

    Current - Reverse Leakage @ Vr is a parameter that describes the amount of current that flows in the reverse direction through a diode or other semiconductor component when a reverse voltage (Vr) is applied across it. This leakage current is typically very small, but it is important to consider in electronic circuits as it can affect the overall performance and reliability of the component. The reverse leakage current is influenced by factors such as the material properties of the semiconductor, temperature, and the magnitude of the reverse voltage applied. Manufacturers provide this parameter in datasheets to help engineers and designers understand the behavior of the component in reverse bias conditions.

    1μA @ 75V
  • Output Current

    The rated output current is the maximum load current that a power supply can provide at a specified ambient temperature. A power supply can never provide more current that it's rated output current unless there is a fault, such as short circuit at the load.

    150mA
  • Voltage - Forward (Vf) (Max) @ If

    The parameter "Voltage - Forward (Vf) (Max) @ If" refers to the maximum voltage drop across a diode when it is forward-biased and conducting a specified forward current (If). It indicates the maximum potential difference the diode can withstand while allowing current to flow in the forward direction without breaking down. This value is crucial for designing circuits as it helps determine how much voltage will be lost across the diode during operation. Higher Vf values can lead to reduced efficiency in power applications, making this parameter essential for optimizing circuit performance.

    1.25V @ 150mA
  • Forward Current

    Current which flows upon application of forward voltage.

    150mA
  • Operating Temperature - Junction

    Operating Temperature - Junction refers to the maximum temperature at which the junction of an electronic component can safely operate without causing damage or performance degradation. This parameter is crucial for determining the reliability and longevity of the component, as excessive heat can lead to thermal stress and failure. Manufacturers specify the operating temperature range to ensure that the component functions within safe limits under normal operating conditions. It is important for designers and engineers to consider the operating temperature - junction when selecting and using electronic components to prevent overheating and ensure optimal performance.

    -65°C~150°C
  • Max Surge Current

    Surge current is a peak non repetitive current. Maximum (peak or surge) forward current = IFSM or if(surge), the maximum peak amount of current the diode is able to conduct in forward bias mode.

    2A
  • Current - Average Rectified (Io)

    The parameter "Current - Average Rectified (Io)" in electronic components refers to the average value of the rectified current flowing through the component. This parameter is important in determining the average power dissipation and thermal considerations of the component. It is typically specified in datasheets for diodes, rectifiers, and other components that handle alternating current (AC) and convert it to direct current (DC). Understanding the average rectified current helps in selecting the appropriate component for a given application to ensure reliable operation and prevent overheating.

    300mA DC
  • Forward Voltage

    the amount of voltage needed to get current to flow across a diode.

    1.25V
  • Max Reverse Voltage (DC)

    Max Reverse Voltage (DC) refers to the maximum voltage that a semiconductor device, such as a diode, can withstand in the reverse bias direction without failing. Exceeding this voltage can lead to breakdown and potential damage to the component. It is a critical parameter in circuit design to ensure reliability and prevent failure when the device is subjected to reverse voltage conditions.

    100V
  • Average Rectified Current

    Mainly used to characterize alternating voltage and current. It can be computed by averaging the absolute value of a waveform over one full period of the waveform.

    300mA
  • Reverse Recovery Time

    Reverse Recovery Time is a key parameter in semiconductor devices, particularly diodes and transistors. It refers to the time taken for a diode or transistor to switch from conducting in the forward direction to blocking in the reverse direction when the polarity of the voltage across the device is reversed. This parameter is crucial in applications where fast switching speeds are required, as a shorter reverse recovery time allows for quicker response times and improved efficiency. Reverse Recovery Time is typically specified in datasheets for electronic components and is an important consideration in circuit design to ensure optimal performance and reliability.

    4 ns
  • Peak Reverse Current

    The maximum voltage that a diode can withstand in the reverse direction without breaking down or avalanching.If this voltage is exceeded the diode may be destroyed. Diodes must have a peak inverse voltage rating that is higher than the maximum voltage that will be applied to them in a given application.

    1μA
  • Capacitance @ Vr, F

    Capacitance @ Vr, F refers to the capacitance value of a capacitor measured at a specified rated voltage (Vr). It indicates how much electrical charge the capacitor can store per volt when subjected to this voltage. This parameter is essential for understanding the behavior of capacitors in circuits, particularly under different voltage conditions, and ensures that the component operates within its safe limits. The unit of measurement is Farads (F), which quantifies the capacitor's ability to hold an electrical charge.

    2pF @ 0V 1MHz
  • Recovery Time

    Recovery time in electronic components refers to the time it takes for a device to return to its normal operating state after being subjected to a specific stimulus or disturbance. This parameter is particularly important in devices such as diodes, transistors, and capacitors, where the recovery time can impact the overall performance and reliability of the component. A shorter recovery time indicates that the component can quickly recover from a transient event, ensuring proper functionality and minimizing any potential disruptions in the circuit. Manufacturers typically provide recovery time specifications to help engineers and designers select components that meet the requirements of their specific applications.

    4 ns
  • Height
    1.25mm
  • Length
    2.85mm
  • Width
    1.7mm
  • RoHS Status

    RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.

    Non-RoHS Compliant
  • Lead Free

    Lead Free is a term used to describe electronic components that do not contain lead as part of their composition. Lead is a toxic material that can have harmful effects on human health and the environment, so the electronics industry has been moving towards lead-free components to reduce these risks. Lead-free components are typically made using alternative materials such as silver, copper, and tin. Manufacturers must comply with regulations such as the Restriction of Hazardous Substances (RoHS) directive to ensure that their products are lead-free and environmentally friendly.

    Contains Lead
0 Similar Products Remaining

1n4148w Replacement and Equivalent

You can replace the 1N4148 with the 1N4448WS, 1N4448W, 1N4448, 1N4148WS, 1N4148W, 1N4148W-E3-08, MMSD4148T1G, and 1N4148W RHG


1n4148w Features

  • Fast Switching Speed

  • Low Forward Voltage: Maximum of 0.715V at 1mA

  • Fast Reverse Recovery: Maximum of 4ns

  • Low Capacitance: Maximum of 2pF

  • Surface Mount Package Ideally Suited for Automated Insertion

  • For General Purpose Switching Applications

1n4148w Applications

  • High-Speed Switching and Reverse Polarity Protection

  • High-Speed Rectifying Applications

  • Consumer, Automotive, and Telecommunication Industry


1n4148w Manufacturer

Diodes Incorporated is a global manufacturer and supplier of application-specific standard products within the discrete, logic, analog, and mixed-signal semiconductor markets. Diodes serve the consumer electronics, computing, communications, industrial, and automotive markets.

Diodes' products include diodes, rectifiers, transistors, MOSFETs, protection devices, functional specific arrays, single gate logic, amplifiers and comparators, Hall effect and temperature sensors; power management devices, including LED drivers, AC-DC converters and controllers, DC-DC switching and linear voltage regulators, and voltage references along with special function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers. Diodes Incorporated also has timing, connectivity, switching, and signal integrity solutions for high-speed signals.


1n4148w Package

                                             package.jpgpackage2.jpg

SOD-123


1n4148w Circuit Diagram

circuit diagram.jpg

1n4148w vs 1n4148ws


1N4148W1N4148WS
Package / Case
SOD-123
SC-90, SOD-323F
Min Operating Temperature-65°C
-55°C
SubcategoryRectifier Diodes
Voltage - Rated DC75V75V
Pin Count
22
Diode TypeStandardStandard
Output Current150mA150mA
Forward Current150mA150mA
Max Surge Current2A2A
Forward Voltage1.25V1V
Max Reverse Voltage (DC)100V75V
Average Rectified Current300mA150mA
Peak Reverse Current1μA5μA
Length2.85mm1.8mm
Height1.25mm1mm
Width1.7mm1.35mm
Weight29.993795mg27.6mg
Number of Terminations22
Max Operating Temperature
150°C

150°C
Capacitance2pF4pF
Power Rating400mW200mW
Max Power Dissipation400mW200mW
Current Rating150mA150mA


Trend Analysis

Datasheet PDF

Download datasheets and manufacturer documentation for Diodes Incorporated 1N4148W-7.

Parts with Similar Specs

The three parts on the right have similar specifications to Diodes Incorporated & 1N4148W-7.
Frequently Asked Questions

How many pins does 1n4148w have?

2

What can you replace with the 1N4148?

1N4448WS, 1N4448W, 1N4448, 1N4148WS, 1N4148W

What is 1N4148WS-7-F diode?

The 1N4148WS-7-F is a surface mount silicon epitaxial planar fast Switching Diode for general purpose switching, high-speed switching applications. It is ideally suited for automatic insertion. 75V DC Reverse voltage. -65 to 150°C Junction and storage temperature range.

Are all 1N4148 diodes the same?

As the most common mass-produced switching diode, the 1N4148 replaced the older 1N914. They differed mainly in their leakage current specification, however, today most manufacturers list common specifications. For example, Vishay lists the same leakage current for both parts: 25 nA at -20 V, 25°C.

What are Schottky diodes used for?

Schottky diodes are used for their low turn-on voltage, fast recovery time and low-loss energy at higher frequencies. These characteristics make Schottky diodes capable of rectifying a current by facilitating a quick transition from conducting to blocking state.
1N4148W-7

Diodes Incorporated

In Stock: 1990

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