1N4930A

Overview

The Microchip Technology 1N4930A is a single Zener diode designed for voltage regulation applications. It features a nominal reference voltage of 19.2 V with a maximum voltage tolerance of 5%. The component has a maximum power dissipation of 0.4 W and operates within a temperature range up to 175 °C. Key electrical characteristics include a maximum dynamic impedance of 36 Ω and a working test current of 7.5 mA. The device utilizes a through-hole mounting style with tin/lead (Sn/Pb) terminal plating.

Feature Summary

• Provides stable voltage regulation at a nominal 19.2 V reference level
• Supports high-temperature operation up to 175 °C
• Utilizes through-hole axial lead construction for reliable mounting

Applications

• Voltage reference circuits requiring 19.2 V stability
• Overvoltage protection in low-power electronic systems
• Biasing networks in analog signal processing equipment

Procurement Notes

Verify the specific manufacturer source, as the 1N4930A designation appears in databases associated with Codi Semiconductor Inc rather than exclusively Microchip Technology. Confirm RoHS compliance status, as listed data indicates non-compliance. Ensure the required 0.4 W power rating and 175 °C thermal limits align with your design constraints before procurement.

Selection Notes

Select this component when a precise 19.2 V Zener reference is needed in a through-hole package. Consider the 36 Ω dynamic impedance for noise sensitivity requirements. Verify that the 0.4 W power dissipation capability suffices for the expected current load. Check terminal plating specifications if lead-free soldering processes are mandatory.

Part Context

This part belongs to the standard Zener diode category used for voltage clamping and regulation. It shares functional similarities with other 19.2 V variants like the 1N4924 and 1N4927, though dynamic impedance and test currents may vary. These components are typically employed in discrete semiconductor designs where stable DC voltage levels are critical.

Replacement Considerations

The 1N4924 and 1N4927 are documented as similar components with identical 19.2 V ratings and 0.4 W power dissipation. Substitution requires verification of dynamic impedance differences, as the 1N4924 exhibits 150 Ω and the 1N4927 shows 75 Ω compared to the 1N4930A's 36 Ω.