ULN2004AFWG,N,E

Overview

The ULN2004AFWG,N,E is a high-voltage, high-current Darlington transistor array manufactured by Toshiba Semiconductor and Storage. It comprises seven NPN Darlington pairs with integrated high-voltage outputs and common cathode clamp diodes designed for switching inductive loads. The device features a 10.5kΩ series base resistor per channel, enabling direct interface with CMOS logic operating between 6V and 15V supply voltages. Key electrical specifications include a maximum collector current of 500mA per output, a collector-emitter voltage rating of 50V, and an input voltage range of 6V to 15V. It operates within a temperature range of -40°C to +85°C and is housed in a 16-pin SOIC package.

Feature Summary

• Integrated 10.5kΩ base resistors facilitate direct connection to 6V-15V CMOS logic without external components.
• Built-in common cathode clamp diodes protect against voltage spikes generated by inductive load commutation.
• High single-output current capability of 500mA allows driving of heavy loads such as relays or solenoids.

Applications

• Relay driver circuits
• Stepper motor and DC brushed motor control
• LED and gas discharge display drivers

Procurement Notes

Verify the specific suffix 'N,E' against the manufacturer's official datasheet to confirm it denotes the standard tape-and-reel packaging format rather than a variant with altered electrical characteristics. Ensure the component source is authorized to guarantee authenticity and traceability for industrial applications.

Selection Notes

Select this part when interfacing 6V to 15V CMOS logic directly with high-voltage inductive loads. The internal 10.5kΩ resistors reduce input drive current requirements compared to other variants like the ULN2003A. Verify that the 50V output voltage rating and 500mA current capacity align with the specific load requirements of the design.

Part Context

This component belongs to the ULx200xA series of Darlington arrays. Unlike the ULN2003A which targets 5V TTL/CMOS interfaces, the ULN2004A variant is optimized for higher voltage logic levels (6V-15V). The 'AFWG' designation typically indicates the SOIC surface-mount package configuration.

Replacement Considerations

The ULN2003A serves as a functional substitute but requires different input voltage levels due to its lower 2.7kΩ base resistance. Other compatible alternatives include the STMicroelectronics ULN2004AN or ON Semiconductor MC1413B, provided pinout and electrical ratings are verified.