Product Summary

The ULN2003A is a high-voltage high-current Darlington transistor array. The device consists of seven npn Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. The collector-current rating of a single Darlington pair is 500 mA. The ULN2003A can be paralleled for higher current capability. Applications of the device include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers. The ULN2003A has a 2.7kΩ series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices.

Parametrics

ULN2003A absolute maximum ratings: (1)VCC, Collector-emitter voltage: 50 V; Clamp diode reverse voltage: 50 V; (2)VI, Input voltage: 30 V; (3)Peak collector current: 500 mA; (4)IOK, Output clamp current: 500 mA; Total emitter-terminal current:–2.5 A; (5)TA, Operating free-air temperature range: -20~70℃; (6)θJA, Package thermal impedance: 73℃/W D package; 67℃/W N package; 64℃/W NS package; 108℃/W PW package; (7)θJC, Package thermal impedance: 36℃/W D package; 54℃/W N package; (8)TJ, Operating virtual junction temperature: 150℃; (9)Lead temperature for 1.6 mm (1/16 inch) from case for 10 seconds: 260℃; (10)Tstg, Storage temperature range: –65 to 150℃.

Features

ULN2003A features: (1)500-mA-Rated Collector Current (Single Output); (2)High-Voltage Outputs: 50 V; (3)Output Clamp Diodes; (4)Inputs Compatible With Various Types of Logic; (5)Relay-Driver Applications.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
ULN2003A
ULN2003A

STMicroelectronics

Transistors Darlington Seven NPN Array

Data Sheet

0-1: $0.35
1-10: $0.29
10-100: $0.22
100-250: $0.19
ULN2003AD
ULN2003AD

Texas Instruments

Transistors Darlington Darlington

Data Sheet

0-1: $0.35
1-25: $0.29
25-100: $0.23
100-250: $0.22
ULN2003ADE4
ULN2003ADE4

Texas Instruments

Transistors Darlington Darlington

Data Sheet

0-1: $0.35
1-25: $0.29
25-100: $0.23
100-250: $0.22
ULN2003ADG4
ULN2003ADG4

Texas Instruments

Transistors Darlington Hi-Vltg Hi-Crnt Darl Transistor Arrays

Data Sheet

0-1: $0.40
1-25: $0.29
25-100: $0.26
100-250: $0.22
ULN2003ADR
ULN2003ADR

Texas Instruments

Transistors Darlington Darlington

Data Sheet

0-1: $0.19
1-25: $0.14
25-100: $0.09
100-250: $0.09
ULN2003ADR2G
ULN2003ADR2G

ON Semiconductor

Transistors Darlington DARLINGTON TRNS ARRY

Data Sheet

0-1: $0.58
1-25: $0.45
25-100: $0.39
100-250: $0.34
ULN2003ADRE4
ULN2003ADRE4

Texas Instruments

Transistors Darlington Darlington

Data Sheet

0-1: $0.34
1-25: $0.21
25-100: $0.18
100-250: $0.16
ULN2003ADRG3
ULN2003ADRG3

Texas Instruments

Transistors Darlington Hi-Vltg,Hi-Current Darl Trans Array

Data Sheet

0-1: $0.33
1-25: $0.23
25-100: $0.20
100-250: $0.17