1N5370/TR8

Overview

The Microchip Technology 1N5370/TR8 is a silicon 5.0-watt Zener voltage regulator diode from the JEDEC registered 1N5333-5388B series. It provides a nominal Zener voltage of 56 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features a T-18 axial lead package. Electrical characteristics include a maximum dynamic impedance of 35 ohms, a maximum reverse current of 0.5 µA, and a maximum surge current of 400 A.

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 Level 1 requiring no dry pack

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection systems
• Reference voltage generation

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm tolerance and compliance status. Confirm that the TR8 designation aligns with the required tape and reel packaging specifications. Ensure compatibility with the intended thermal management strategy given the 5-watt power dissipation rating.

Selection Notes

Select this component when a 56 V regulation point is required with ±5% tolerance. Consider the T-18 package dimensions and thermal resistance values for adequate heat sinking. Verify that the maximum DC current requirements fall within the specified limits for the chosen mounting method.

Part Context

This part belongs to the 1N5333-5388B series of 5-watt silicon Zener diodes originally manufactured by Microsemi. The series covers a voltage range from 3.3 V to 200 V. The product line offers various tolerance options and screening levels, including military equivalents, to meet diverse industrial and commercial application needs.

Replacement Considerations

Surface mount equivalents are available as SMBJ5370 or SMBG5370.