S9015 PNP Transistor: Low Frequency, Low Noise TO-92 S9015 Equivalents and Circuit
TRANSISTOR TO-92
S9015 is a well-known PNP silicon BJT transistor. This transistor is mainly designed for low gain signal amplification. This article is going to describe pinout, specification, circuit, equivalents, and other details about the S9015 transistor.

Simple S9015 Transistor Audio Amplifier
What is S9015?
S9015 is a PNP type of Bipolar Transistor. This transistor is primarily used for the amplification of low-gain signals. When a low gain signal is amplified to a high gain signal, the noise associated with the signal is enhanced as well. However, this transistor has a low noise feature that filters the noise from the amplified signal, resulting in a low noise and high gain signal at the output. If a small few mill watt input signal is provided, the transistor's maximum collector dissipation is 400mW, which is enough to drive a small 2 to 3 inch 4Ohms or 8Ohms speaker directly.
S9015 Pinout

S9015 Pinout
Specifications
- TypeParameter
- 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.
Through Hole - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
TO-226-3, TO-92-3 (TO-226AA) Formed Leads - Surface Mount
having leads that are designed to be soldered on the side of a circuit board that the body of the component is mounted on.
NO - Transistor Element Material
The "Transistor Element Material" parameter in electronic components refers to the material used to construct the transistor within the component. Transistors are semiconductor devices that amplify or switch electronic signals and are a fundamental building block in electronic circuits. The material used for the transistor element can significantly impact the performance and characteristics of the component. Common materials used for transistor elements include silicon, germanium, and gallium arsenide, each with its own unique properties and suitability for different applications. The choice of transistor element material is crucial in designing electronic components to meet specific performance requirements such as speed, power efficiency, and temperature tolerance.
SILICON - Current-Collector (Ic) (Max)100mA
- Number of Elements1
- Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-55°C~150°C TJ - 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.
Last Time Buy - 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 Terminations3
- 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) - 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.
BOTTOM - 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.
NOT SPECIFIED - 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.
NOT SPECIFIED - Pin Count
a count of all of the component leads (or pins)
3 - 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.
O-PBCY-T3 - Qualification Status
An indicator of formal certification of qualifications.
Not Qualified - Configuration
The parameter "Configuration" in electronic components refers to the specific arrangement or setup of the components within a circuit or system. It encompasses how individual elements are interconnected and their physical layout. Configuration can affect the functionality, performance, and efficiency of the electronic system, and may influence factors such as signal flow, impedance, and power distribution. Understanding the configuration is essential for design, troubleshooting, and optimizing electronic devices.
SINGLE - Power - Max
Power - Max is a parameter that specifies the maximum amount of power that an electronic component can handle without being damaged. It is typically measured in watts and indicates the upper limit of power that can be safely supplied to the component. Exceeding the maximum power rating can lead to overheating, malfunction, or permanent damage to the component. It is important to consider the power-max rating when designing circuits or systems to ensure proper operation and longevity of the electronic components.
450MW - Polarity/Channel Type
In electronic components, the parameter "Polarity/Channel Type" refers to the characteristic that determines the direction of current flow or the type of signal that can be accommodated by the component. For components like diodes and transistors, polarity indicates the direction in which current can flow through the component, such as forward bias or reverse bias for diodes. For components like MOSFETs or JFETs, the channel type refers to whether the component is an N-channel or P-channel device, which determines the type of charge carriers that carry current through the component. Understanding the polarity or channel type of a component is crucial for proper circuit design and ensuring that the component is connected correctly to achieve the desired functionality.
PNP - Transistor Type
Transistor type refers to the classification of transistors based on their operation and construction. The two primary types are bipolar junction transistors (BJTs) and field-effect transistors (FETs). BJTs use current to control the flow of current, while FETs utilize voltage to control current flow. Each type has its own subtypes, such as NPN and PNP for BJTs, and MOSFETs and JFETs for FETs, impacting their applications and characteristics in electronic circuits.
PNP - DC Current Gain (hFE) (Min) @ Ic, Vce
The parameter "DC Current Gain (hFE) (Min) @ Ic, Vce" in electronic components refers to the minimum value of the DC current gain, denoted as hFE, under specific operating conditions of collector current (Ic) and collector-emitter voltage (Vce). The DC current gain hFE represents the ratio of the collector current to the base current in a bipolar junction transistor (BJT), indicating the amplification capability of the transistor. The minimum hFE value at a given Ic and Vce helps determine the transistor's performance and efficiency in amplifying signals within a circuit. Designers use this parameter to ensure proper transistor selection and performance in various electronic applications.
200 @ 1mA 5V - Current - Collector Cutoff (Max)
The parameter "Current - Collector Cutoff (Max)" refers to the maximum current at which a transistor or other electronic component will cease to conduct current between the collector and emitter terminals. This parameter is important in determining the maximum current that can flow through the component when it is in the cutoff state. Exceeding this maximum cutoff current can lead to malfunction or damage of the component. It is typically specified in the component's datasheet and is crucial for proper circuit design and operation.
50nA ICBO - Vce Saturation (Max) @ Ib, Ic
The parameter "Vce Saturation (Max) @ Ib, Ic" in electronic components refers to the maximum voltage drop across the collector-emitter junction when the transistor is in saturation mode. This parameter is specified at a certain base current (Ib) and collector current (Ic) levels. It indicates the minimum voltage required to keep the transistor fully conducting in saturation mode, ensuring that the transistor operates efficiently and does not enter the cutoff region. Designers use this parameter to ensure proper transistor operation and to prevent overheating or damage to the component.
300mV @ 10mA, 100mA - Voltage - Collector Emitter Breakdown (Max)
Voltage - Collector Emitter Breakdown (Max) is a parameter that specifies the maximum voltage that can be applied between the collector and emitter terminals of a transistor or other semiconductor device before it breaks down and allows excessive current to flow. This parameter is crucial for ensuring the safe and reliable operation of the component within its specified limits. Exceeding the maximum breakdown voltage can lead to permanent damage or failure of the device. Designers and engineers must carefully consider this parameter when selecting components for their circuits to prevent potential issues and ensure proper functionality.
45V - Transition Frequency
Transition Frequency in electronic components refers to the frequency at which a device can transition from one state to another, typically defining the upper limit of its operating frequency. It is a critical parameter in determining the speed and performance of active components like transistors and integrated circuits. This frequency is influenced by factors such as capacitance, resistance, and the inherent characteristics of the materials used in the component's construction. Understanding transition frequency is essential for optimizing circuit designs and ensuring reliable signal processing in various applications.
150MHz - Frequency - Transition
The parameter "Frequency - Transition" in electronic components refers to the maximum frequency at which a signal transition can occur within the component. It is a crucial specification for digital circuits as it determines the speed at which data can be processed and transmitted. A higher frequency transition allows for faster operation and better performance of the electronic component. It is typically measured in hertz (Hz) or megahertz (MHz) and is specified by the manufacturer to ensure proper functioning of the component within a given frequency range.
150MHz - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
ROHS3 Compliant
S9015 Features
Polarity: PNP
Maximum Collector Power Dissipation (Pc): 0.2 W
Maximum Collector-Base Voltage |Vcb|: 50 V
Maximum Collector-Emitter Voltage |Vce|: 45 V
Maximum Emitter-Base Voltage |Veb|: 5 V
Maximum Collector Current |Ic max|: 0.1 A
Max. Operating Junction Temperature (Tj): 150 °C
Transition Frequency (ft): 150 MHz
Forward Current Transfer Ratio (hFE), MIN: 200
S9015 Transistor Equivalents
S9014, MPSA18, 2N2907, S8550, 2N4403, BC527, SS9012, BC557C, NTE2672, BC327
S9015 Applications
Signal Amplifier
Hearing Aids
Darlington Pairs
Audio Preamplifiers
Audio Amplification Stages
Sensor Circuits
Switching loads under 100mA
S9013 VS S9014 VS S9015
The difference in Type
S9013 and S9014 are both NPN-type low-power plastic-encapsulated transistors, while S9015 is a PNP-type bipolar transistor.
The difference in Parameters
S9013 Parameters:
Type: Structure NPN
Collector-emitter voltage 25V
Collector-Base Voltage 45V
Emitter-Base Voltage 5V
Collector current Ic Max 0.5A
Dissipated power 0.625W
Operating temperature -55℃ ~ +150℃
Characteristic frequency 150MHz
Magnification D64-91 E78-122 F96-135 G122-166 H144-220 I190-300
The main use Amplifier circuit
S9014 and S9015 Parameters:
Collector maximum dissipation power PCM=0.4W (Tamb=25℃)
Collector maximum allowable current ICM=0.1A
Collector base breakdown voltage BVCBO=50V
Collector-emitter breakdown voltage BVCEO=45V
Emitter base breakdown voltage BVEBO=5V
Collector-emitter saturation voltage drop VCE (sat) =0.3V (IC=100mA; IB=5mA)
Base-emitter saturation voltage drop VBE (sat) =1V (IC=100mA; IB=5mA)
Characteristic frequency fT=150MHz
HFE: A=60~150; B=100~300; C=200~600; D=400~1000
The parameters of the transistors s9014 and s9015 are the same, but the conductivity polarity is the opposite.
Where to use S9015?
The S9015 can be utilized for a wide range of applications, including audio preamplification, audio amplification, and signal amplification from low to high gain. It can also be used as a switch to control relays, LEDs, and high-power transistors, among other things. This transistor can be used and wired in the same way that any other BJT transistor can.
How to run S9015 safely?
It is advised that you do not drive a load of more than 100mA and that the load voltage is less than 45V when using SS9015 in your circuits for long-term and good overall performance. Use a base resistor that provides the transistor with the needed input current, and always operate or store the transistor at a temperature between -55 and +150 degrees Celsius.
S9015 Dimensions Outline

S9015 Dimensions Outline
S9015 Manufacturer
Founded in 1991, Micro Commercial Components Corp. (MCC) is a manufacturer of high-quality discrete semiconductors to the consumer markets. MCC's products include diodes, rectifiers, transistors, MOSFETs, voltage regulators, and protection devices.
Datasheet PDF
- PCN Obsolescence/ EOL :
- Datasheets :
What is the use of S9015?
This is a PNP type S9015 Bipolar Transistor. It is used in electronic components, and mechanical fields, in science projects, and DIY.
What is the difference among S9013, S9014 and S9015?
S9013 and S9014 are both NPN-type low-power plastic-encapsulated transistors, while S9015 is a PNP-type tube.
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