SLA4070

Overview

The SLA4070 is a PNP Darlington transistor array housed in a 12-pin SIP package with an integrated heat sink fin. It features two independent Darlington pairs, each incorporating internal base resistors (R1: 3kΩ typ, R2: 100Ω typ) to simplify drive circuitry. The device supports a maximum collector current of 5A and a collector-emitter voltage of -100V. Key electrical characteristics include a DC current gain ranging from 1000 to 15000 at VCE=-2V and IC=-3A, with a saturation voltage of -1.0V to -1.5V. Thermal resistance from junction to case is rated at 5°C/W.

Feature Summary

• Integrated dual Darlington configuration with built-in base resistors for simplified interface
• High current handling capability suitable for power switching applications
• Robust thermal design utilizing a metal fin for efficient heat dissipation

Applications

• General purpose power switching circuits
• Motor control interfaces
• Relay driver stages

Procurement Notes

Verify component authenticity through authorized Sanken Electric distributors or certified supply chain partners. Confirm the specific manufacturing lot code against the datasheet markings to ensure compliance with the published electrical specifications. Request official test reports if required for critical system validation.

Selection Notes

Evaluate the thermal requirements based on the specified junction-to-case resistance and ambient operating conditions. Ensure the drive circuit can provide sufficient base current to maintain saturation within the specified limits. Consider the physical dimensions of the 12-pin SIP package with fin during PCB layout and mechanical assembly planning.

Part Context

This component belongs to the SLA series of PNP Darlington arrays manufactured by Sanken Electric USA Inc. The series provides high-gain switching solutions designed for robust performance in industrial and consumer electronics environments requiring reliable power control.

Replacement Considerations

The datasheet explicitly marks this part as 'Not Recommended for New Designs'. Engineers should evaluate alternative components from the manufacturer's current portfolio that offer updated specifications and long-term availability.