1N5374E3/TR8

Overview

The Microsemi Corporation 1N5374E3/TR8 is a silicon Zener diode with a nominal voltage of 75 V and a power dissipation rating of 5.0 W at 25 °C. It features a ±5% tolerance, indicated by the B suffix, and operates within a temperature range of -65 °C to +150 °C. The device utilizes an axial-lead T-18 plastic package and includes RoHS compliance via the e3 suffix. Electrical characteristics include a maximum dynamic impedance of 45 Ω and a maximum reverse current of 0.5 μA.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Features flexible axial-lead mounting terminals for through-hole applications
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B without requiring dry pack

Applications

• Voltage regulation in electronic circuits
• Surge protection applications
• Reference voltage sources

Procurement Notes

Verify that the part number strictly matches the requested specifications, including the specific tolerance suffix (B) and the RoHS-compliant lead plating designation (e3). Confirm the tape and reel packaging format (TR) aligns with automated assembly requirements. Ensure the component meets the required environmental standards and thermal ratings for the intended application environment.

Selection Notes

Select this component when a 75 V Zener voltage with tight ±5% tolerance is required. Consider the 5 W power dissipation capability and the wide operating temperature range suitable for demanding environments. Verify that the axial-lead T-18 package fits the board layout constraints and that the thermal resistance characteristics meet the heat sinking requirements for steady-state operation.

Part Context

This component belongs to the JEDEC registered 1N5333B through 1N5388B series of 5.0 watt Zener diodes manufactured by Microsemi's Scottsdale Division. The series offers a wide selection of voltages from 3.3 V to 200 V with various tolerance options identified by specific suffix letters. These devices are designed for robust performance in voltage regulation and protection roles.

Replacement Considerations

Cross-reference with other manufacturers offering equivalent 75 V, 5 W Zener diodes in the T-18 package. Verify that any substitute maintains the same ±5% tolerance, thermal characteristics, and electrical parameters specified in the datasheet.