ULN2803A Array 8 NPN Darlington 50V 18-DIP: Pinout, Datasheet, and ULN2003A VS ULN2803A

The ULN2803A contains eight Darlington transistors with common emitters and integral suppression diodes for inductive loads. Each Darlington features a peak load current rating of 600 mA (500 mA continuous) and can withstand at least 50 V in the OFF state. Outputs may be paralleled for higher current capability.

• Eight Darlington transistors with common emitters

• Output current to 500 mA

• Output voltage to 50 V

• Integral suppression diodes

• Versions for all popular logic families

• Output can be paralleled

• Inputs pinned opposite outputs to simplify board layout

ULN2803A Pinout

ULN2803A Symbol

ULN2803A Footprint

ULN2803A 3D Model

ULN2803A Schematic Diagram

ULN2803 and ULN2003 are Darlington array ICs used to interface Logic circuits, such as microcontroller circuits, to high power devices. During the early days of your electronics tour, you may not understand the difference between these two ICs. This blog is to give you an idea about the major difference between these two ICs.

ULN2003A

ULN2003 is a seven-channel Darlington array used to interface microcontrollers to high voltage, high current devices such as solenoids, lamps, relays, etc. It has the capacity to drive  500mA into a single channel, up to 250mA per channel if four of the seven channels are active and 125 mA per channel if all the seven channels are active. Its output has clamp diodes for transient suppression to protect the low-power microcontroller circuits.

The ULN2003 is the replacement for the ULN2803 when using the Prop-1 Trainer Board or when using P7 (Prop-1) or P15 (Prop-2 and Prop-SX) for serial communications with devices like the AP-8, DC-16, FC-4, and RC-4.

ULN2803A

ULN2803 is an eight-channel Darlington array used to interface microcontrollers to high voltage, high current devices such as solenoids, lamps, relays, etc. It has the capacity to drive  500mA into a single channel, up to 250mA per channel if four of the eight channels are active and 125 mA per channel if all the eight channels are active. Its output has clamp diodes for transient suppression to protect the low-power microcontroller circuits. ULN2803 is commonly used for controlling large seven-segment displays.

• Power Management

• Consumer Electronics

• Portable Devices

• Industrial

MC1413BPG

ULN2803A Package information

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