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1N4910/TR
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Product Detailed Parameters
- Description：DIODE ZENER 12.8V 400MW DO7
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：12.8 V
- Tolerance：±5%
- Power - Max：400 mW
- Impedance (Max) (Zzt)：50 Ohms
- Current - Reverse Leakage @ Vr：-
- Operating Temperature：-25°C ~ 100°C
- Mounting Type：Through Hole
- Package / Case：DO-204AA, DO-7, Axial
- Voltage - Forward (Vf) (Max) @ If：-
- Grade：-
- Qualification：-
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Overview
The 1N4910/TR is a temperature-compensated Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 12.8 V with a tolerance of 5%. The device operates in the DO-7-2 through-hole package and dissipates up to 400 mW. Key electrical characteristics include a maximum reverse leakage current of 15 uA, a Zener impedance of 50 Ohms, and a test current of 4 mA. It supports an operating temperature range from -65°C to +175°C and exhibits a voltage temperature coefficient of 0.002 %/C.
Feature Summary
- Temperature compensated design for stable voltage regulation across varying thermal conditions
- High junction temperature capability supporting operation up to +175°C
- Through-hole axial lead construction for standard PCB mounting
Applications
- Precision voltage reference circuits requiring low temperature drift
- Over-voltage protection in high-temperature industrial environments
- Reference elements in measurement instrumentation
Procurement Notes
Verify the specific suffix /TR indicates reel packaging when ordering. Confirm that the 12.8 V nominal voltage aligns with circuit requirements, as this value differs from standard integer Zener ratings. Ensure the DO-7-2 package dimensions fit the target footprint. Check for RoHS compliance status if required by project specifications.
Selection Notes
Select this component when a precise 12.8 V reference is needed with minimal temperature sensitivity. The 400 mW power rating suits low-current applications. Compare against standard Zener diodes if temperature compensation is not critical. Verify that the 50 Ohm impedance meets noise and stability requirements for the specific signal path.
Part Context
This part belongs to Microchip's discrete diode portfolio, specifically within the Zener diode category. It is designed for applications demanding higher reliability than general-purpose components. The temperature-compensated variant offers improved stability compared to standard Zener diodes in the same voltage class.
Replacement Considerations
Direct parameter-equivalent substitutes may exist from other manufacturers offering similar 12.8 V temperature-compensated Zener diodes in DO-7 packages. Verify pinout compatibility and thermal performance before substitution.
