1N4983

Single Zener Diodes Overview

The Microchip Technology 1N4983 is a 5-watt Zener voltage regulator with a nominal breakdown voltage of 110 V. It operates within a junction temperature range of -65°C to +175°C and features a hermetically sealed voidless glass package. The device exhibits a maximum reverse leakage current of 2 µA at the specified test voltage and maintains a maximum dynamic impedance of 125 Ω at the test current of 12 mA. It supports a maximum continuous current of 43 mA and can withstand a surge current of 1.2 A for an 8.3 ms square wave pulse.

Single Zener Diodes Feature Summary

• Hermetically sealed construction using voidless hard glass with tungsten slugs
• Military qualification compliant with MIL-PRF-19500/356 standards
• Internal metallurgical bonds ensuring robust mechanical integrity
• Triple-layer passivation providing enhanced environmental protection

Single Zener Diodes Applications

• High-reliability military electronic systems
• Voltage regulation in aerospace circuits
• Power supply reference stages requiring radiation hardness
• Critical control loops where failure tolerance is zero

Single Zener Diodes Procurement Notes

Verify that the specific part number matches the required military specification level, as suffixes indicate different quality grades. Confirm the termination finish, noting that previous inventory utilized solid silver leads while current specifications define tin/lead finishes. Ensure the component meets the necessary radiation hardness requirements for the intended operational environment before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a high-power 5 W Zener diode is required for critical applications. The 110 V rating suits mid-to-high voltage regulation tasks. Consider the axial lead configuration for through-hole mounting. Evaluate the thermal derating curve if operating near the upper temperature limit. Verify that the 125 Ω impedance meets the circuit's noise and stability requirements.

Single Zener Diodes Part Context

This device belongs to the 1N4954 through 1N4996 series of industry-recognized Zener regulators. These components are widely used in demanding environments due to their standardized JEDEC registration and extensive voltage selection. The series offers standard 5% tolerances, with tighter options available via specific ordering suffixes.

Single Zener Diodes Replacement Considerations

• JAN1N4983US/TR
• JANS1N4983D
• JANTXV1N4983D

Single Zener Diodes FAQ

What is the maximum forward voltage of the 1N4983?

The maximum forward voltage is 1.50 V when tested at a forward current of 1.0 A.

How does the package construction affect reliability?

The voidless hermetically sealed glass package with internal metallurgical bonds provides extreme robustness and protects against moisture ingress, making it suitable for environments where failure cannot be tolerated.