STA461C

Overview

The STA461C is a power transistor array manufactured by Sanken Electric USA Inc. It integrates multiple transistors within a single package, designed for high-current switching applications. The device features an absolute maximum collector current of ±6 A and a collector-emitter voltage rating between 60 V and 70 V. With a total power dissipation capacity of 3.2 W at 25°C ambient temperature, it supports operation across a junction temperature range of -55°C to +150°C. The component utilizes a surface-mount LF400B package with specific pin configurations for base, collector, and emitter connections.

Feature Summary

• Integrates multiple power transistors into a single compact array configuration
• Supports high peak collector currents up to ±6 A under pulsed conditions
• Provides robust thermal performance with a maximum junction temperature of 150°C
• Features low saturation voltage characteristics for efficient switching

Applications

• High-power audio amplifier output stages
• Motor control driver circuits
• Industrial switching power supplies
• Inverter bridge circuits

Procurement Notes

Verify the specific lot number and manufacturing date code upon receipt to ensure compliance with project timelines. Confirm that the received components match the LF400B package dimensions and pinout specifications exactly. Check for any physical damage to the leads or casing before integration into the assembly process.

Selection Notes

Select this component when a multi-transistor solution is required for high-current switching tasks. Ensure the thermal management design accounts for the derating curve provided in the datasheet. Verify that the drive circuit can supply the necessary base current to achieve the specified saturation levels under load conditions.

Part Context

This part belongs to Sanken's power transistor array series, designed for robust industrial and consumer electronics applications. It serves as a discrete alternative to integrated driver ICs where custom biasing or higher individual transistor flexibility is needed. The array format simplifies PCB layout compared to using multiple discrete transistors.

Replacement Considerations

Check for direct equivalents from other manufacturers offering similar pin-compatible arrays. Verify that substitute parts meet or exceed the 60-70 V collector-emitter voltage and ±6 A current ratings. Ensure the replacement package matches the LF400B footprint and thermal characteristics.