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1N4901/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)：200 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 1N4901/TR is a temperature-compensated single Zener diode manufactured by Microchip Technology. It features a nominal breakdown voltage of 12.8 V with a tolerance of ±5%. The device has a maximum power dissipation of 400 mW and a maximum dynamic impedance (Zzt) of 200 Ohms. It is designed for through-hole mounting in DO-7 packages and operates within a temperature range of -65°C to +175°C.
Feature Summary
- Temperature compensated design for stable voltage regulation across wide thermal ranges
- Single configuration suitable for precision reference applications
- Through-hole construction compatible with standard axial lead processing
Applications
- Precision voltage reference circuits requiring thermal stability
- Overvoltage protection in sensitive electronic systems
- Voltage clamping in analog signal conditioning paths
Procurement Notes
Verify the specific suffix designation against the manufacturer's current datasheet to confirm package type and compliance status. Confirm RoHS compliance details as availability may vary by region. Check for any obsolescence notices or lifecycle changes directly from Microchip Technology before finalizing procurement plans.
Selection Notes
Select this component when a stable 12.8 V reference is required under varying thermal conditions. Ensure the circuit design accommodates the 400 mW power rating and 200 Ohm dynamic impedance. Verify that the through-hole DO-7 package fits the board layout constraints and assembly requirements.
Part Context
This part belongs to Microchip's discrete semiconductor portfolio, specifically within the Zener diode category. It is often associated with legacy Actel specifications following Microchip's acquisition activities. The component serves as a specialized voltage regulator distinct from standard general-purpose Zener diodes due to its compensation characteristics.
Replacement Considerations
Cross-reference with other 12.8 V temperature-compensated Zener diodes from Microchip or equivalent manufacturers. Verify pinout compatibility and thermal performance metrics before substitution.
