1N4783A/TR

Overview

The 1N4783A/TR is a temperature-compensated Zener diode manufactured by Microchip Technology. It features an 8.5 V nominal Zener voltage with a ±5% tolerance and a maximum power dissipation of 500 mW. The device utilizes a DO-204AH (DO-35) axial through-hole package. Key electrical parameters include a maximum Zener impedance of 100 Ohms, a test current of 1 mA, and a maximum reverse leakage current of 10 uA. It operates within a temperature range of -65°C to +175°C.

Feature Summary

• Temperature compensated design for stable voltage regulation across wide thermal ranges
• Through-hole axial construction in a standard DO-35 glass passivated package
• High junction temperature capability supporting operation up to 175°C

Applications

• Precision voltage reference circuits requiring low temperature drift
• Over-voltage protection stages in sensitive electronic systems
• Voltage regulator applications in industrial or automotive environments

Procurement Notes

Verify the specific suffix /TR indicates reel packaging when ordering. Confirm the manufacturer part number matches Microchip Technology specifications exactly. Ensure the required voltage tolerance and power rating align with circuit design constraints before procurement. Check for RoHS compliance status if required by project standards.

Selection Notes

Select this component when a stable 8.5 V reference is needed with minimal temperature coefficient. The DO-35 package suits manual assembly or legacy through-hole designs. Compare the 100 Ohm impedance against load requirements to ensure adequate regulation performance under varying current conditions.

Part Context

This part belongs to the 1N47xx series of Zener diodes produced by Microchip Technology. The series offers various voltage ratings in standardized axial packages. The /TR suffix typically denotes tape and reel packaging for automated insertion, distinguishing it from bulk variants.

Replacement Considerations

Cross-reference with other manufacturers' 1N4783A equivalents ensuring identical 8.5 V Zener voltage and 500 mW power rating. Verify that substitute components meet the same -65°C to +175°C operating temperature range and DO-35 package dimensions.