1N5373CE3/TR8

Overview

The Microchip Technology 1N5373CE3/TR8 is a silicon 5-watt Zener diode from the JEDEC registered 1N5333-5388B series. It provides voltage regulation at a nominal Zener voltage of 68 V with a tight tolerance of ±2%, indicated by the 'C' suffix. The device operates within an ambient temperature range of -65°C to +150°C and features a T-18 axial lead package. Electrical characteristics include a maximum dynamic impedance of 44 Ohms, a maximum reverse current of 0.5 µA, and a test current of 20 mA.

Feature Summary

• Provides precise voltage regulation with ±2% tolerance for sensitive circuit applications
• Capable of handling high steady-state power dissipation up to 5 watts with adequate heat sinking
• Features robust construction with void-free transfer molded epoxy body meeting UL94V-0 standards
• Offers flexible mounting options through standard axial leads compatible with through-hole assembly

Applications

• High-voltage power supply regulation circuits
• Overvoltage protection in industrial control systems
• Reference voltage generation in precision measurement equipment
• Surge suppression in electronic assemblies requiring high energy absorption

Procurement Notes

Verify the specific ordering suffixes against official manufacturer documentation to confirm exact electrical tolerances and packaging configurations. Confirm RoHS compliance status and environmental declarations directly with the supplier or manufacturer datasheet prior to procurement. Ensure that thermal management requirements are met for the intended operating environment to maintain specified performance levels.

Selection Notes

Select this component when a stable 68 V reference with tight tolerance is required in a high-power axial package. Consider the thermal resistance characteristics and derating curves for proper heat dissipation design. Evaluate the maximum surge current capabilities against potential transient events in the target application to ensure reliable operation under stress conditions.

Part Context

This part belongs to the Microsemi (now Microchip) 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V. The 'e3' suffix indicates RoHS compliance with annealed matte-tin plating on terminals. The 'TR' suffix denotes tape and reel packaging for automated assembly processes.

Replacement Considerations

Direct substitutes within the same series include other 1N53xx devices with matching voltage ratings and tolerance suffixes. Cross-referencing with equivalent JEDEC registered parts from other manufacturers may be necessary if original sourcing is unavailable. Verify mechanical dimensions and pinout compatibility before substitution.