BA12004BF-E2

Overview

The BA12004BF-E2 is a monolithic integrated circuit comprising seven Darlington transistor circuits. It features built-in base current-limiting resistors and output surge-absorbing clamp diodes. The device supports an operating supply voltage range from -0.5 V to +30 V, with a maximum output breakdown voltage of 60 V. Each channel provides a maximum DC output current of 500 mA and a minimum DC current gain of 1000. The input resistor for the BA12004 series is specified at 10.5 kΩ. The component operates within a temperature range of -40°C to +85°C and is available in SOP16 packaging.

Feature Summary

• Integrates seven independent Darlington transistor circuits within a single package.
• Includes internal base current-control resistors to simplify driver interface requirements.
• Incorporates built-in output surge-absorbing clamp diodes for inductive load protection.

Applications

• Motor Drivers
• LED Drivers
• Solenoid Drivers
• Low Side Switch

Procurement Notes

Verify the specific ordering suffix E2 corresponds to the embossed tape and reel packaging format for the SOP16 variant. Confirm that the component status is acceptable for the intended design, as the datasheet indicates this series is not recommended for new designs. Ensure compatibility with existing PCB footprints and reflow soldering profiles for surface-mount assembly.

Selection Notes

Select the BA12004BF-E2 when seven low-side switching channels are required with high current gain capabilities. The 10.5 kΩ internal input resistor distinguishes this model from the BA12003 series, affecting drive current requirements. Verify thermal dissipation limits based on ambient temperature and copper area, as power derating curves are provided for the SOP16 package configuration.

Part Context

This component belongs to the BA1200xB family of high-voltage, high-current Darlington transistor arrays manufactured by ROHM Semiconductor. The BA12004BF-E2 specifically denotes the SOP16 surface-mount package variant with tape-and-reel packaging. It shares architectural similarities with the DIP16 through-hole versions but differs in physical dimensions and thermal characteristics.

Replacement Considerations

Direct substitutes include BA12003BF-E2, which shares the same package and pinout but utilizes a 2.7 kΩ input resistor instead of 10.5 kΩ. Other family members such as BA12004B (DIP16) offer identical electrical performance in a different package style. Cross-model substitution requires verification of input drive voltage levels relative to the internal resistor values.