1N4706

Overview

The Microchip Technology 1N4706 is a silicon unidirectional Zener diode housed in a DO-35 (DO-204AH) glass axial-leaded package. It provides a nominal Zener voltage of 19 V with a standard tolerance of 5%. The device is rated for a maximum power dissipation of 500 mW and operates within a temperature range of -65 °C to +175 °C. Key electrical characteristics include a maximum reverse leakage current of 50 nA and a test current of 50 µA.

Feature Summary

• JEDEC registered part number ensuring standardized compatibility
• Internal metallurgical bond option available via suffix designation
• Hermetically sealed glass construction for environmental stability

Applications

• Voltage regulation circuits requiring stable reference levels
• Overvoltage protection for sensitive electronic components
• Clamping applications in signal processing paths

Procurement Notes

Verify the specific ordering suffix when procuring, as designations such as "-1" indicate internal metallurgical bonding options that may differ from standard configurations. Confirm RoHS compliance status prior to integration, as certain variants may not meet current environmental directives. Ensure the selected package matches the intended PCB footprint requirements for the DO-35 form factor.

Selection Notes

Select this component for applications requiring a 19 V reference point with moderate power handling capabilities. The wide operating temperature range supports deployment in harsh industrial or automotive environments. Consider the low test current specification for precision biasing requirements where minimal loading on the source circuit is necessary.

Part Context

This component belongs to the 1N4678 through 1N4717 series of 0.5-watt Zener voltage regulators manufactured by Microchip Technology. The series offers a broad selection of voltages ranging from 1.8 V to 43 V in standard 5% tolerances. These devices are designed for general-purpose voltage regulation tasks in discrete semiconductor applications.

Replacement Considerations

Equivalent parts within the same series share identical mechanical dimensions and thermal characteristics. Verify voltage tolerance and power dissipation ratings match before substituting. Military screening options exist for variants requiring enhanced reliability standards.