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Updated at 17/06/2025 10:30:15(UTC+8)

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Description

The ULN2801A is a 50V Eight Darlington Array designed for general purpose applications with a current limit resistor. The array contains eight Darlington transistors with common emitters and integral suppression diodes for inductive loads. Each Darlington features a peak load current rating of 600mA (500mA continuous) and can withstand at least 50V in the off state. Outputs may be paralleled for higher current capability.
Integral suppression diodes
Versions for all popular logic families
Output can be paralleled
Inputs pinned opposite outputs to simplify board layout

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ULN2801A Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Through Hole
Number of Pins	18 Pin
Case/Package	DIP-18
Voltage Rating (DC)	50.0 V
Current Rating	500 mA
Output Voltage	50 V
Output Current	500 mA
Number of Channels	8 Channel
Number of Positions	18 Position
Polarity	NPN
Power Dissipation	2.25 W
Breakdown Voltage (Collector to Emitter)	50 V
Continuous Collector Current	0.5A
hFE Min	1000 @350mA, 2V
Input Voltage (Max)	5 V
Output Voltage (Max)	50 V
Output Current (Max)	500 mA
Input Power (Max)	2.25 W
DC Current Gain (hFE)	1000
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-20 ℃
Power Dissipation (Max)	2.25 W
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Size-Length	23.24 mm
Size-Width	7.1 mm
Size-Height	3.676 mm
Operating Temperature	-20℃ ~ 150℃ (TJ)
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2014/06/16
ECCN Code	EAR99

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