ULN2004APG,C,N

Overview

The ULN2004APG,C,N is a high-voltage, high-current Darlington transistor array manufactured by Toshiba Semiconductor and Storage. It integrates seven independent NPN Darlington pairs within a single package, designed to interface low-power logic circuits with higher-power loads. The device features built-in clamping flyback diodes across each output, allowing direct connection to inductive loads such as relays and solenoids without external protection components. Key electrical specifications include a collector-emitter breakdown voltage of 50 V and a continuous collector current capability of 500 mA per channel. The unit operates reliably within an ambient temperature range of -20°C to +85°C and is housed in a standard 16-pin DIP package suitable for through-hole mounting.

Feature Summary

• Integrates seven independent NPN Darlington transistor pairs for multi-channel switching applications
• Includes internal clamping flyback diodes on all outputs to protect against inductive load voltage spikes
• Provides high-voltage and high-current drive capability suitable for interfacing with various logic families

Applications

• Driving stepper motors and relay coils
• Solenoid and lamp control circuits
• General-purpose high-voltage switching interfaces

Procurement Notes

Verify the specific suffix configuration when ordering, as variations may exist regarding lead-free compliance or RoHS status. Confirm the manufacturer's current production status and availability directly with authorized distributors. Ensure that the selected component meets the thermal and electrical requirements of the target application environment before finalizing procurement.

Selection Notes

Select this component when a design requires multiple high-voltage switching channels driven by low-current logic signals. The integrated flyback diodes simplify circuit layout for inductive loads. Consider the thermal dissipation capabilities of the DIP-16 package if operating near maximum current limits. Verify compatibility with the system's logic voltage levels and ensure adequate heat sinking if power density is high.

Part Context

This part belongs to the ULN200x series of Darlington arrays, a widely used family of components for driving high-power loads from microcontrollers or logic gates. The ULN2004 variant specifically provides seven channels, distinguishing it from the five-channel ULN2003. It serves as a robust interface solution in industrial control, consumer electronics, and automotive systems where reliable switching of inductive loads is required.

Replacement Considerations

Compatible substitutes include the ULN2003A for applications requiring fewer channels, or equivalent parts from other manufacturers such as STMicroelectronics (ULN2004AN) and On Semiconductor (MC1413BP). Ensure pinout compatibility and verify that the replacement's current and voltage ratings meet or exceed the original specifications.