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1N4901A
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Product Detailed Parameters
- Description：DIODE ZENER 12.8V 400MW DO7
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：12.8 V
- Tolerance：±5%
- Power - Max：400 mW
- Impedance (Max) (Zzt)：200 Ohms
- Current - Reverse Leakage @ Vr：-
- Operating Temperature：-55°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 1N4901A is a temperature-compensated Zener diode with a nominal voltage of 12.8 V and a tolerance of ±5%. It features a maximum power dissipation of 400 mW and a maximum Zener impedance (Zzt) of 200 Ohms. The device operates within a temperature range of -55°C to +100°C and is housed in an axial DO-7 (DO-204AA) through-hole package.
Feature Summary
- Temperature compensated design for stable voltage regulation
- Low noise performance characteristics
- Through-hole axial leaded construction
Applications
- Precision voltage reference circuits
- Voltage regulation applications requiring low noise
- Temperature compensation networks
Procurement Notes
Verify the manufacturer origin, as Microchip acquired assets from Microsemi which also produced this part. Confirm the specific datasheet version matches the required electrical tolerances and packaging details. Ensure the component is sourced from authorized distributors to guarantee authenticity and traceability for critical electronic assemblies.
Selection Notes
Select this component when a stable 12.8 V reference is needed with minimal noise and temperature drift. The 400 mW power rating suits low-current applications. Compare against standard Zener diodes if temperature stability is not a primary requirement, noting that this specific series offers superior thermal performance over general-purpose variants.
Part Context
This part belongs to the 1N4896(A) through 1N4915(A) series of temperature-compensated Zener diodes. These components are designed to provide a nominal 12.8 V output with improved stability compared to standard Zener diodes, making them suitable for precision analog circuits where voltage consistency across temperature variations is critical.
Replacement Considerations
Compatible substitutes include other manufacturers' 1N4901A equivalents such as those from Diotec or New Jersey Semi-Conductor. Verify that replacement parts maintain the same 12.8 V nominal voltage, ±5% tolerance, and DO-7 package dimensions to ensure mechanical and electrical compatibility.
