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1N4923A
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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)：150 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 1N4923A 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 designed for low noise applications and operates in a DO-35 (DO-204AH) axial leaded package. It has a maximum power dissipation of 500 mW and a maximum Zener impedance of 150 Ohm. The component utilizes through-hole mounting technology.
Feature Summary
- Temperature compensated design for stable voltage reference performance across varying thermal conditions
- Low noise characteristics suitable for precision analog circuitry
- Through-hole axial leaded construction for robust mechanical integration
Applications
- Precision voltage reference circuits
- Temperature compensated regulator designs
- Low noise signal conditioning stages
Procurement Notes
Verify the manufacturer designation, as historical data references Microsemi Corporation prior to its acquisition by Microchip Technology. Confirm the specific suffix indicates standard commercial grade specifications. Ensure the package type matches the required DO-35 form factor for your PCB layout. Cross-reference the Zener voltage tolerance and impedance parameters against your schematic requirements before finalizing procurement.
Selection Notes
Select this component when a stable 19.2 V reference is required with minimal temperature drift. The 500 mW power rating suits low-current applications. Consider the DO-35 package constraints regarding board space and lead bending radius. Verify that the low noise specification meets the sensitivity requirements of the downstream circuitry compared to standard Zener diodes.
Part Context
This part belongs to the family of single Zener diodes offered by Microchip Technology. It serves as a specialized reference element distinct from general-purpose rectifier or switching diodes within the broader semiconductor portfolio. The product line emphasizes stability and noise performance for critical analog functions rather than high-power handling or fast switching speeds.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with generic 19.2 V Zener diodes only if temperature compensation and low noise specifications are non-critical for the application.
