1N4706/TR

Overview

The 1N4706/TR is a single silicon Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 19 V with a standard tolerance of 5%. The device is housed in a DO-35 (DO-204AH) glass axial-leaded package and supports through-hole mounting. It has a power dissipation rating of 500 mW and operates within a temperature range of -65°C to +175°C. The maximum reverse leakage current is specified at 50 nA, with a test current of 50 µA.

Feature Summary

• Provides stable voltage regulation using a single unidirectional Zener junction.
• Constructed with a hermetically sealed glass axial-leaded DO-35 package for environmental protection.
• Capable of operation across an extended industrial temperature range up to +175°C.

Applications

• General-purpose voltage reference circuits
• Overvoltage protection stages
• Biasing networks in analog signal processing

Procurement Notes

Verify the specific suffix configuration against official Microchip documentation to ensure alignment with required screening levels or metallurgical bond options. Confirm that the reel packaging format matches automated assembly requirements. Cross-reference the JEDEC registration number and pinout details with the target PCB footprint to prevent integration errors during procurement and design phases.

Selection Notes

Select this component when a 19 V regulation point is required within a low-power axial-leaded form factor. Ensure the circuit design accommodates the 500 mW thermal limit and the 5% voltage tolerance. Verify that the operating environment remains within the specified -65°C to +175°C range to maintain performance reliability without requiring additional derating measures.

Part Context

This part belongs to the 1N4678 through 1N4717 series of 0.5 W Zener Voltage Regulators produced by Microchip Technology. The series offers a wide selection of voltages from 1.8 V to 43 V in standard 5% tolerances. These devices are JEDEC registered and utilize a consistent DO-35 glass axial-leaded package structure for standardized integration into electronic assemblies.

Replacement Considerations

Substitutes must match the 19 V Zener voltage, 500 mW power rating, and DO-35 package dimensions. Verify compatibility with the 5% tolerance specification and the maximum reverse leakage current limits defined in the original datasheet to ensure equivalent circuit behavior.