SLA4041

Overview

The SLA4041 is a high-voltage NPN Darlington transistor manufactured by Sanken Electric USA Inc., housed in a 12-pin SIP package. It features an absolute maximum collector-emitter voltage (VCEO) of 200 V and a continuous collector current (IC) rating of 3 A. The device integrates a built-in flywheel diode for flyback voltage absorption, characterized by a forward voltage (VF) of 1.6 V at 1 A. Key electrical characteristics include a DC current gain (hFE) ranging from 1000 to 15000 at VCE=4V and IC=1.5A, with a saturation voltage (VCE(sat)) of 1.1 V to 1.5 V. The junction temperature (Tj) maximum is 150 °C.

Feature Summary

• High voltage capability with 200 V collector-emitter breakdown
• Integrated flywheel diode for efficient flyback voltage absorption
• High DC current gain suitable for direct logic interface applications

Applications

• Motor driver circuits
• Relay drivers
• Switching power supplies

Procurement Notes

Verify the specific package variant against the manufacturer's pinout diagrams before integration. Confirm thermal management requirements based on the Safe Operating Area (SOA) curves provided in the datasheet. Ensure the design accounts for the specified maximum junction temperature limits during operation.

Selection Notes

Select this component for applications requiring high voltage isolation and substantial current handling within a single package. Consider the integrated diode functionality to simplify circuit topology. Evaluate thermal dissipation needs relative to the ambient temperature and heatsinking options defined in the PT-Ta characteristics.

Part Context

This component belongs to the SLA series of power transistors produced by Sanken Electric. It is designed as a robust solution for driving inductive loads where high voltage tolerance and integrated protection are required. The SIP packaging facilitates through-hole mounting on printed circuit boards.

Replacement Considerations

Public confirmed substitute part numbers: SLA4042M, SLA4043M.