JANS1N4987US/TR

Single Zener Diodes Overview

The JANS1N4987US/TR is a single Zener diode manufactured by Microchip Technology, designed for surface-mount applications in the D-5B package. It features a nominal Zener voltage of 160 V with a maximum power dissipation of 5 W and a tolerance of ±5%. The device operates within an extended temperature range from -65°C to +175°C. Key electrical characteristics include a reverse leakage current of 2 µA at 69.2 V and a forward voltage of 1.5 V at 1 A. This component is part of the JANS series, indicating qualification for space-grade environments.

Single Zener Diodes Feature Summary

• Space-qualified radiation hardness suitable for aerospace and satellite systems
• Extended operating temperature range supporting extreme thermal conditions
• High-power dissipation capability for robust voltage regulation
• Surface-mount packaging for automated assembly integration

Single Zener Diodes Applications

• Satellite power supply regulation
• Avionics voltage reference circuits
• Spacecraft telemetry system protection
• Radiation-hardened electronic subsystems

Single Zener Diodes Procurement Notes

Verify that the specific suffix /TR indicates tape-and-reel packaging if required for your assembly process, as standard bulk packaging may differ. Confirm the JANS designation meets your project's radiation hardness assurance requirements. Ensure the D-5B footprint matches your PCB layout constraints. Request the latest datasheet revision to confirm any recent parameter updates or compliance changes before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a high-voltage, high-power Zener diode is required for space-rated applications. The 160 V rating suits mid-range voltage regulation tasks where standard commercial parts would fail under radiation stress. Consider the D-5B package dimensions during mechanical design. Verify that the 5 W power rating aligns with your thermal management strategy in the target environment.

Single Zener Diodes Part Context

This part belongs to the 1N498x series of high-power Zener diodes produced by Microchip Technology. The JANS prefix denotes a specific subset qualified for space applications, distinguishing it from commercial JAN or industrial variants. These diodes are engineered for reliability in harsh environments, offering superior performance compared to standard general-purpose Zener diodes used in terrestrial electronics.

Single Zener Diodes Replacement Considerations

Publicly confirmed substitute part numbers for JANS1N4987US/TR are not available in the provided documentation. Users must verify compatibility with alternative space-qualified components through independent radiation testing and electrical characterization.