LM136AH-2.5/883/MPGD

Overview

The LM136AH-2.5/883/MPGD is a precision shunt voltage reference diode manufactured by Texas Instruments, designed for high-reliability applications requiring strict environmental compliance. This component operates within an extended military temperature range of -55°C to +125°C and utilizes a hermetic TO-5 metal can package to ensure long-term stability in harsh conditions. It provides a nominal output voltage of 2.5V with an initial accuracy of 0.5% and a maximum dynamic impedance of 0.07 ohms. The device supports a maximum shunt current of 20 mA and features a low temperature coefficient of 20 ppm/°C, making it suitable for critical analog circuits where precision and durability are paramount.

Feature Summary

• Hermetically sealed TO-5 metal can construction for enhanced environmental protection
• Qualified to MIL-STD-883 standards for aerospace and defense reliability
• Precision shunt regulation with low dynamic impedance characteristics
• Extended operational capability across severe military temperature extremes

Applications

• Military avionics instrumentation systems
• Spacecraft power supply regulation circuits
• High-reliability industrial control references
• Defense communication equipment calibration

Procurement Notes

Verify that the supplier provides valid certification documents confirming compliance with MIL-STD-883 requirements. Ensure the part number suffix matches the specific batch traceability needed for your quality assurance protocols. Confirm that the hermetic seal integrity meets the necessary leakage rate specifications for your application environment before finalizing procurement.

Selection Notes

Select this component when standard commercial or industrial grade references fail to meet extreme temperature or radiation hardness requirements. The TO-5 package offers superior thermal dissipation compared to plastic packages but requires through-hole mounting considerations. Evaluate the 20 mA current limit against your circuit's biasing needs to ensure stable operation without exceeding maximum power dissipation limits under worst-case thermal conditions.

Part Context

This part belongs to the LM136 series of precision shunt voltage references, which are widely recognized for their stability and accuracy. The 'A' designation indicates tighter initial accuracy tolerances compared to standard variants. The '/883/MPGD' suffix denotes military-grade processing and packaging, distinguishing it from commercial equivalents like the LM136H-2.5/NOPB by providing guaranteed performance under rigorous environmental stress testing.

Replacement Considerations

Direct replacements include other MIL-STD-883 qualified versions of the LM136 series such as the LM136AH-2.5/NK or equivalent parts from authorized distributors offering full traceability. Verify pinout compatibility and thermal resistance values when substituting to maintain circuit stability.