1N5370BE3/TR12

Overview

The Microchip Technology 1N5370BE3/TR12 is a silicon 5-watt Zener diode with a nominal voltage of 56 V and a ±5% tolerance. It operates within a temperature range of -65°C to +150°C and features a maximum reverse leakage current of 0.5 µA at 40.3 V. The device has a dynamic impedance of 35 Ω, a test current of 20 mA, and a maximum regulator current of 2.3 A. Packaged in a T-18 axial lead format on a reel, it provides robust voltage regulation for high-power applications.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and offers minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for secure installation

Applications

• Voltage regulation circuits requiring high power dissipation
• High current protection systems with adequate heat sinking
• Industrial equipment utilizing wide temperature operational ranges

Procurement Notes

Verify the component authenticity by checking the manufacturer's marking against official datasheet specifications. Confirm that the RoHS compliant e3 suffix matches the required environmental standards for your assembly process. Ensure the TR12 tape and reel packaging aligns with your automated pick-and-place equipment capabilities before finalizing procurement orders.

Selection Notes

Select this component when a 56 V reference point is required with a 5-watt power rating. Consider the T-18 package dimensions for PCB layout constraints. Evaluate thermal management requirements carefully, as steady-state power dissipation depends heavily on ambient temperature and lead length. Verify that the 35 Ω dynamic impedance meets the noise sensitivity limits of the target circuit design.

Part Context

This part belongs to the JEDEC registered 1N5333B through 1N5388B series of axial-leaded 5.0 watt Zener diodes. Manufactured by Microsemi (now Microchip Technology), these devices are designed for plastic encapsulation with Level 1 moisture classification. The series covers a voltage selection from 3.3 to 200 volts, offering various tolerance options identified by specific suffix letters.

Replacement Considerations

Compatible substitutes include other 5-watt Zener diodes with a 56 V nominal voltage and ±5% tolerance in an axial leaded package. Ensure any replacement maintains equivalent thermal resistance characteristics and surge current handling capabilities to preserve circuit integrity.