HSSR-7112-600

Overview

The HSSR-7112-600 is a Class H single-channel hermetically sealed power MOSFET optocoupler manufactured by Broadcom Limited. It features an AlGaAs LED driving two discrete power MOSFETs in a DIP-8 ceramic package, certified to MIL-PRF-38534 and QML-38534 standards. The device provides 1500Vdc isolation voltage and supports AC/DC load switching with 0.8A continuous current at Connection A (1.0Ω on-resistance) or 1.6A at Connection B (0.25Ω). It operates within a temperature range of -55°C to +125°C and handles 5A output surge currents.

Feature Summary

• Hermetically sealed Class H construction meeting MIL-PRF-38534 and QML-38534 reliability standards
• Integrated AlGaAs LED driver for dual discrete power MOSFETs enabling bidirectional solid-state switching
• High isolation capability with 1500Vdc withstand voltage and high transient immunity
• Robust surge handling with 5A output capacity suitable for harsh environment applications

Applications

• Military and aerospace systems requiring high-reliability signal isolation
• Standard 28Vdc and 48Vdc load driving circuits
• Aircraft control systems and flight vehicle management
• Replacement for electromechanical and solid-state relays in industrial automation

Procurement Notes

Verify the specific suffix and package variant during procurement, as the HSSR series includes both through-hole DIP-8 and surface-mount SMD configurations. Confirm that the supplier provides documentation proving compliance with MIL-PRF-38534 Class H standards and QML-38534 certification. Ensure the component matches the required connection configuration (A or B) for the target resistance and current specifications. Request full traceability records for military-grade components.

Selection Notes

Select this component when high isolation voltage and hermetic sealing are mandatory for safety-critical environments. Choose Connection A for lower on-resistance requirements or Connection B for higher current capacity up to 1.6A. Consider the operating temperature range of -55°C to +125°C for extreme environmental conditions. Evaluate the need for QML-38534 certification against project reliability requirements before finalizing the part number.

Part Context

The HSSR-7112-600 belongs to the HSSR series of special purpose isolators designed for high-reliability applications. It utilizes advanced photovoltaic technology to drive power MOSFETs, offering superior performance compared to traditional mechanical relays. The product line is engineered to meet stringent military specifications, ensuring long-term stability and low failure rates in defense and aerospace sectors.

Replacement Considerations

Direct replacements must match the MIL-PRF-38534 Class H specification and QML-38534 certification. Verify pinout compatibility between DIP-8 and SMD variants if form-factor changes are permitted. Ensure substitute parts maintain the 1500Vdc isolation rating and equivalent thermal performance characteristics.