JAN1N4974CUS/TR

Single Zener Diodes Overview

The JAN1N4974CUS/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 47 V and a maximum power dissipation of 1.5 W. It operates within a junction temperature range of -65 °C to +175 °C. The device features a 2% voltage tolerance, a test current of 5.5 mA, and a maximum dynamic impedance of 50 Ohms at the test point. It utilizes a voidless hermetically sealed glass package in an A (D-5A) MELF configuration.

Single Zener Diodes Feature Summary

• Military qualified per MIL-PRF-19500/406 for high-reliability applications
• Hermetically sealed voidless glass construction with internal metallurgical bonds
• Triple-layer passivation for robust protection
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability circuits where failure cannot be tolerated
• Radiation-hardened electronic systems

Single Zener Diodes Procurement Notes

Verify that the component matches the specific JANTXV reliability level and 2% tolerance designation indicated by the 'C' suffix. Confirm the tape and reel packaging format aligns with automated assembly requirements. Ensure the procurement source provides documentation confirming compliance with MIL-PRF-19500/406 standards.

Single Zener Diodes Selection Notes

Select this component when a surface mount solution is required for military-grade voltage regulation. The 1.5 W power rating and wide thermal operating range support demanding environments. Verify that the 47 V breakdown voltage and 2% tolerance meet the circuit design specifications before integration.

Single Zener Diodes Part Context

This part belongs to the 1N4460US through 1N4496US series of 1.5 Watt glass Zener diodes. These devices are industry-recognized equivalents to JEDEC registered series, offering surface mount convenience while maintaining the performance characteristics of traditional axial lead components.

Single Zener Diodes Replacement Considerations

JAN1N4974US

Single Zener Diodes FAQ

What is the maximum steady-state power dissipation?

The maximum steady-state power dissipation is 1.5 W at an ambient temperature of 25 °C.

How is polarity indicated on the package?

Polarity is indicated by a band on the package, which marks the cathode end.