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Product Detailed Parameters
- Description：DIODE ZENER 8.4V 500MW DO7
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：8.4 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：15 Ohms
- Current - Reverse Leakage @ Vr：10 µA @ 5.5 V
- Operating Temperature：-65°C ~ 175°C
- Mounting Type：Through Hole
- Package / Case：DO-204AA, DO-7, Axial
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The Microchip Technology 1N3156A/TR is a temperature compensated Zener reference diode featuring an 8.4 V nominal voltage with a maximum temperature coefficient of 0.002 %/°C. It operates at a test current of 10 mA, offering a maximum impedance of 15 Ohms and reverse current of 10 µA. The device dissipates 500 mW within a -65°C to +175°C range. Packaged in a hermetically sealed DO-7 (DO-204AA) glass axial lead case, the 'TR' suffix indicates tape and reel packaging.
Feature Summary
- Provides minimal voltage change over a broad temperature range for stable reference applications
- Features internal metallurgical bonds for enhanced reliability
- Offers flexible axial-lead mounting terminals suitable for through-hole integration
Applications
- Instrumentation requiring stable voltage references
- Circuit designs demanding low temperature drift
- Precision analog signal conditioning
Procurement Notes
Verify that the ordering suffix 'TR' confirms tape and reel packaging rather than bulk or tube formats. Confirm RoHS compliance status if required by specific environmental regulations, as military variants may differ. Ensure the supplier provides documentation matching the JEDEC registered specifications for the 1N3156A series.
Selection Notes
Select this component when a precise 8.4 V reference with tight thermal stability is required. The 1N3156A offers a superior temperature coefficient compared to standard Zeners. Consider the DO-7 package constraints for board layout and verify that the 10 mA operating current aligns with the system's power budget and regulation requirements.
Part Context
This part belongs to the popular 1N3154 thru 1N3157A series of Zero-TC Reference Diodes manufactured by Microsemi (now Microchip). These devices are designed to provide minimal voltage changes across wide temperature ranges. The series includes various tolerance options and military qualifications, establishing a standard for high-reliability voltage referencing in harsh environments.
Replacement Considerations
Direct substitutes include other parts from the 1N3154-1N3157A series with equivalent temperature coefficients. Verify pinout compatibility and package dimensions before replacing. Cross-reference with manufacturer datasheets to ensure electrical parameters match the original design intent.
