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Multi Channel Relay and Inductive Load Sink Driver

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The ULN2003V12 and ULN2003F12 are multi-channel sink drivers comprised of 7-channel and 4-channel output stages respectively. The ULN2003V12 sink driver features 7 low output impedance drivers that minimize on-chip power dissipation and an actual low power upgrade version for popular ULN2003A family in real applications. When driving a typical 12V relay coil, a ULN2003V12 will dissipate 12 times lower power compared to ULN2003A. ULN2003F12 is a lower power variant benefiting from fewer channel integration and a better fit for applications requiring only 4-channel drivers, such as driving low voltage stepping motors, etc.


The ULN2003V12 and ULN2003F12 both support 3.3V to 5V CMOS logic input interface, thus making it compatible to a wide range of micro-controllers and other logic interfaces, and also feature an improved input interface that minimizes the input DC current drawn from the external drivers. The input RC snubber circuit integrated at ULN2003V12 and ULN2003F12 improves the performance in noisy operating conditions, and the internal pull-down resistor at input stage helps allow input logic to be tri-stated.


As shown in the Functional Diagram, each output of the ULN2003V12 and ULN2003F12 features an internal free-wheeling diode connected in a common-cathode configuration at the COM pin which provides flexibility of increasing current sink capability through combining several adjacent channels in parallel. Under typical conditions the ULN2003V12 can support up to 1.0A of load current when all 7-channels are connected in parallel. 


  • Inputs Compatible with Popular Logic Types
  • Relay Driver Applications
  • Stepping Motor Applications
  • Logic Level Shifter


  • 4- and 7-Channel High Current Sink Drivers
  • Supports up to 20V Output Pull-up Voltage
  • Low Output VOL of 0.6V (Typical) with: 100mA (Typ.) Current Sink per Channel at 3.3V Logic Input, 140mA (Typ.) Current Sink per Channel at 5.0V Logic Input
  • Compatible to 3.3V and 5.0V Micro-Controllers and Logic Interface
  • Internal Free-wheeling Diodes for Inductive Kick-back Protection
  • Input Pull-down Resistors Allows Tri-Stating  the Input Driver
  • Input RC-Snubber to Eliminate Spurious Operation in Noisy Environments
  • ESD: 4kV HBM, 1kV CDM
  • Available in 16-Pin SOIC, 16-Pin TSSOP and 10-Pin DFN3030 packages
  • Available in “Green” Molding Compound (No Br, Sb)
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)

Product Specifications

Product Parameters

Number of Drivers 7
Input Compatibility 5V TTL, CMOS
Input Voltage Max 5.5 V
Collector to Emitter Voltage Rating - V
Output Voltage Max 26 V
Output Current Max 1000 mA
Delay Time Typ 50 ns
Operating Temperature Range °C

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Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
ULN2003V12S16-13 Digi-Key Electronics 5437 8/8/2020 Buy Now United States
ULN2003V12S16-13 Mouser Electronics Inc. 2240 8/8/2020 Buy Now United States
ULN2003V12S16-13 RS Components 1020 8/7/2020 Buy Now England
ULN2003V12S16-13 RS Components Ltd. 930 8/7/2020 Buy Now Japan
ULN2003V12T16-13 Avnet EU 2500 8/8/2020 Buy Now Germany
ULN2003V12T16-13 Arrow Electronics 91 8/8/2020 Buy Now United States
ULN2003V12T16-13 Digi-Key Electronics 3627 8/8/2020 Buy Now United States
ULN2003V12T16-13 Mouser Electronics Inc. 3101 8/8/2020 Buy Now United States
ULN2003V12T16-13 Avnet 5000 8/7/2020 Buy Now United States
ULN2003V12T16-13 Future Electronics - Asia 27500 8/7/2020 Singapore
ULN2003V12T16-13 RS Components 4070 8/7/2020 Buy Now England
ULN2003V12T16-13 RS Components Ltd. 4070 8/7/2020 Buy Now Japan
ULN2003V12T16-13 Rutronik GmbH 27500 8/7/2020 Buy Now Germany