1N4961

Overview

The Microchip Technology 1N4961 is a military-qualified, voidless hermetically sealed glass Zener voltage regulator with a nominal breakdown voltage of 13 V. It features a standard tolerance of ±5% and operates within a junction temperature range of -65°C to +175°C. The device dissipates up to 5 Watts at a lead temperature of 65°C and utilizes an axial-lead 'E' package. Electrical characteristics include a maximum reverse leakage current of 10 µA at 9.9 V, a dynamic impedance of 3 Ohms at the test current of 100 mA, and a forward voltage of 1.5 V at 1 A.

Feature Summary

• Hermetically sealed construction using voidless hard glass and tungsten slugs for high reliability
• Military qualification compliant with MIL-PRF-19500/356 standards
• Robust internal metallurgical bonds ensuring structural integrity under stress
• Triple-layer passivation providing enhanced protection against environmental factors

Applications

• High-reliability aerospace systems where component failure is not tolerated
• Radiation-hardened electronic circuits requiring inherent radiation hardness
• Precision voltage regulation in extreme temperature environments
• Critical power supply backup and reference voltage stabilization

Procurement Notes

Verify that the specific procurement order explicitly matches the manufacturer part number 1N4961. Confirm compliance with the required military specification MIL-PRF-19500/356 if the application demands it. Ensure the packaging type aligns with the intended assembly process, as this component is available in various configurations including JAN, JANTX, and JANS grades. Cross-reference datasheet electrical limits with system requirements before finalizing the purchase.

Selection Notes

Select the 1N4961 when a stable 13 V reference is required in harsh operating conditions. This component is suitable for designs needing high thermal stability and robust physical construction. Consider the 5 W power dissipation capability and the wide operating temperature range when designing heat management strategies. Verify that the axial lead configuration fits the mechanical constraints of the target printed circuit board layout.

Part Context

This component belongs to the 1N4954 through 1N4996 series of 5 Watt Zener diodes manufactured by Microsemi (now Microchip Technology). These devices are industry-standard regulators designed for demanding applications. The series offers a broad selection of voltage values from 3.3 V to 390 V, all sharing similar hermetic sealing and robust construction techniques to ensure long-term performance in critical systems.

Replacement Considerations

Publicly confirmed substitute part numbers include JAN1N4961C, JAN1N4961D, JANTX1N4961, JANTX1N4961C, JANTX1N4961D, and JANTXV1N4961.