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1N4927A
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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 1N4927A is a temperature-compensated Zener reference diode manufactured by Microchip Technology. It features a nominal Zener voltage of 19.2 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 500 mW and utilizes the DO-204AH (DO-35) axial through-hole package. Designed for precision applications, it offers low noise characteristics suitable for stable voltage reference requirements in electronic circuits.
Feature Summary
- Temperature compensated design for stable voltage reference performance across operating ranges
- Low noise characteristics suitable for precision analog applications
- Through-hole axial leaded construction for standard PCB mounting
Applications
- Precision voltage reference sources
- Temperature compensated regulator circuits
- Analog signal conditioning references
Procurement Notes
Verify the specific suffix (e.g., /TR) against the required packaging configuration, as standard versions may differ from tape-and-reel variants. Confirm RoHS compliance status, as some listings indicate non-compliance for certain manufacturing batches or variants. Ensure the DO-204AH package matches the footprint requirements of the target assembly.
Selection Notes
Select this component when a stable 19.2 V reference with temperature compensation is required. The 500 mW power rating dictates thermal management considerations in high-density designs. Verify that the ±5% initial accuracy meets the system's tolerance budget before finalizing the bill of materials.
Part Context
This part belongs to the 1N49xx series of temperature-compensated Zener diodes produced by Microchip Technology. These devices are engineered to provide superior stability compared to standard Zener diodes, particularly in environments where ambient temperature fluctuations occur. The series is widely used in instrumentation and measurement equipment requiring reliable reference voltages.
Replacement Considerations
Cross-reference with other 19.2 V temperature-compensated Zener diodes from manufacturers such as ON Semiconductor or Vishay. Ensure equivalent power ratings and package compatibility. Verify that substitute parts meet the same noise and temperature coefficient specifications for critical reference applications.
