1N4928/TR

Overview

The 1N4928/TR is a temperature-compensated Zener 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-35 (DO-204AH) axial through-hole package. It operates within a junction temperature range of -65°C to +175°C.

Feature Summary

• Temperature compensated design for stable voltage regulation across varying thermal conditions
• Single Zener diode configuration in an axial leaded package
• High junction temperature capability for robust operation

Applications

• Voltage reference circuits requiring thermal stability
• Precision voltage regulation applications
• Temperature-compensated biasing networks

Procurement Notes

Verify the specific suffix /TR indicates tape and reel packaging when ordering. Confirm the manufacturer is Microchip Technology, as Micrel was acquired. Ensure the DO-35 package matches your PCB footprint requirements. Check RoHS compliance status on the official datasheet before integration.

Selection Notes

Select this component when a stable 19.2 V reference is needed over a wide temperature range. The 500 mW power rating suits low-current regulation tasks. The axial DO-35 package is suitable for through-hole mounting. Compare against standard Zener diodes if temperature drift is a critical design constraint.

Part Context

This part belongs to the single Zener diode family from Microchip Technology. It is distinct from standard Zener diodes due to its temperature compensation feature. The product line includes various voltage ratings and packages, with this specific model focusing on the 19.2 V range in a DO-35 housing.

Replacement Considerations

Check for direct substitutes with identical 19.2 V Zener voltage and temperature compensation characteristics. Verify that alternative components match the 500 mW power dissipation and DO-35 package dimensions. Ensure compatibility with existing circuit thermal management strategies.