1N3156E3

Overview

The Microchip Technology 1N3156E3 is an 8.4 V temperature compensated Zener reference diode housed in a hermetically sealed glass DO-7 (DO-204AA) axial package. It operates at a test current of 10 mA with a maximum reverse current of 10 μA at 5.5 V and a maximum impedance of 15 Ω. The device provides a voltage stability of 26 mV over the -55°C to +100°C range, yielding a temperature coefficient of 0.002 %/°C. It supports DC power dissipation up to 500 mW at 25°C and functions within a temperature range of -65°C to +175°C.

Feature Summary

• Provides minimal voltage changes over a broad temperature range for stable reference applications
• Features internal metallurgical bonds and flexible axial-lead mounting terminals
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• Instrumentation requiring stable voltage references
• Circuit designs demanding minimal voltage change with temperature
• High-reliability military and aerospace systems

Procurement Notes

Verify that the 'e3' suffix confirms RoHS compliance and annealed matte-Tin plating. Confirm the specific part number matches the required temperature coefficient and tolerance levels. Ensure the ordering documentation specifies the correct JEDEC type designation. Check for any necessary prefixes like JAN or JANTX if military qualification is required. Validate the package dimensions against the DO-7 standard before integration.

Selection Notes

Select this component when an 8.4 V nominal reference with a 0.002 %/°C temperature coefficient is required. Consider the DO-7 glass package for hermetic sealing and robust mechanical mounting. Evaluate the 500 mW power dissipation capability against the circuit's thermal requirements. Verify compatibility with operating currents near the 10 mA test condition for optimal stability.

Part Context

This device belongs to the 1N3154 through 1N3157 series of Zero-TC Reference Diodes manufactured by Microsemi, now part of Microchip Technology. The series offers various temperature coefficients ranging from 0.01%/°C to 0.001%/°C. The 1N3156 variant specifically targets applications needing tighter stability than the 1N3155 while offering higher stability than the 1N3154.

Replacement Considerations

Direct substitutes include other 1N3156 variants such as 1N3156A or military grades like JANTX1N3156-1. Cross-reference with RH3156 for radiation-hardened requirements. Ensure replacement parts maintain the same DO-7 package and electrical characteristics.

FAQ

What is the maximum allowable voltage change for the 1N3156E3 over its temperature range?

The maximum allowable voltage change is 26 mV over the -55°C to +100°C temperature range.

How does the operating current affect the temperature coefficient?

The temperature coefficient varies with operating current; the specified 0.002 %/°C applies at the 10 mA test current.