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1N4925A
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Product Detailed Parameters
- Description：DIODE ZENER 19.2V 500MW DO204AH
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：19.2 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：75 Ohms
- Current - Reverse Leakage @ Vr：-
- Operating Temperature：-55°C ~ 100°C
- Mounting Type：Through Hole
- Package / Case：DO-204AH, DO-35, Axial
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The Microchip Technology 1N4925A is a temperature compensated Zener reference diode housed in the DO-35 axial package. It features a nominal voltage of 19.2 V with a maximum DC reverse voltage of 20.16 V and a peak repetitive reverse voltage of 18.24 V. The device exhibits low noise characteristics and utilizes double plug construction for stability. It operates within a temperature range of -65 °C to +175 °C, with a capacitance of 0.01 pF and a maximum dynamic impedance of 75 Ω.
Feature Summary
- Temperature compensated design for stable reference performance
- Low noise operation suitable for precision applications
- Double plug construction with metallurgical bonding
Applications
- Precision voltage reference circuits
- Temperature compensated regulation systems
- High-reliability analog signal conditioning
Procurement Notes
Verify RoHS compliance status as standard versions may not be compliant. Confirm availability of high reliability (HR) screened variants if MIL-PRF-19500 standards are required. Check current manufacturing status and lead times directly with the manufacturer or authorized distributors due to potential supply constraints on legacy discrete components.
Selection Notes
Select this component when a stable 19.2 V reference with low noise is required in an axial through-hole package. Ensure the operating environment stays within the specified -65 °C to +175 °C range. Consider the HR variant if military-grade screening is necessary for the application.
Part Context
This part belongs to the 1N4916 through 1N4932A series of low noise temperature compensated Zener reference diodes manufactured by Microchip Technology. These devices are designed for applications requiring high stability and low noise over a wide temperature range, utilizing specialized construction techniques to minimize drift.
Replacement Considerations
Direct replacements include other 19.2 V temperature compensated Zener diodes in the DO-35 package from compatible manufacturers. Verify electrical parameters such as dynamic impedance and leakage current match the original specifications before substitution.
