BA12003BF-E2

The BA12003BF-E2 is a monolithic integrated circuit from ROHM Semiconductor, comprising seven Darlington transistor pairs with common emitters and built-in surge-absorbing clamp diodes. Each channel provides high voltage and high current drive capability, making it suitable for inductive loads such as relays and solenoids.

Key electrical characteristics include a maximum output current of 500 mA per channel, a maximum output sustain voltage of 50 V, a minimum DC current gain (hFE) of 1000 (typical 2400), and a saturation voltage of typically 0.94 V at 350 mA. The input current is typically 0.90 mA at 3.85 V. An internal 2.7 kΩ base resistor simplifies logic-level interfacing.

Typical applications include drivers for LEDs, lamps, relays, solenoids, and as an interface between low-level logic and higher-power loads. The integrated clamp diodes protect against reverse voltages from inductive kickback.

The device is supplied in a surface-mount 16-SOIC package (0.173" body width, 4.40 mm pitch) with a 16-SOP supplier package designation. It operates within a temperature range of -25°C to 75°C and can be stored from -55°C to 150°C.