STA404A

The STA404A is a monolithic 4NPN Darlington transistor array manufactured by Sanken. It integrates four NPN Darlington pairs in a single 10-SIP (Single Inline Package) for space-efficient designs. Each Darlington pair is rated for a collector-emitter voltage (VCEO) of 200V minimum and a continuous collector current (IC) of 3A maximum, with a pulsed current capability of 6A. The device can dissipate up to 4W at an ambient temperature of 25°C and 20W when the case temperature is held at 25°C, with a maximum junction temperature of 150°C.

Key electrical characteristics include a minimum DC current gain (hFE) of 1000 at VCE=4V and IC=1A, and a maximum collector-emitter saturation voltage (VCE(sat)) of 2V at IC=1A and IB=1.5mA. The device also features low leakage currents: maximum ICBO of 100µA at VCB=200V and IEBO of 10mA at VEB=6V. These specifications make the STA404A well-suited for high-current, high-voltage switching applications such as motor drivers, relay drivers, and solenoid controls.

The 10-SIP package provides through-hole mounting for robust mechanical attachment. The operating temperature range is up to 150°C junction temperature, with a storage temperature range of -40°C to +150°C. The device is designed for general-purpose switching and amplification where high gain and multiple channels are required.