1N5382/TR12

Overview

The Microsemi Corporation 1N5382/TR12 is a silicon Zener diode from the JEDEC registered 1N5333B through 1N5388B series. It provides voltage regulation at a nominal Zener voltage of 140 V with a ±5% tolerance, indicated by the B suffix. The device features a T-18 axial-lead plastic package and supports tape-and-reel packaging as specified by the TR12 suffix. It operates within a temperature range of -65°C to +150°C and dissipates up to 5.0 watts of power.

Feature Summary

• Provides stable voltage regulation across broad operating current and temperature ranges
• Features flexible axial-lead mounting terminals for versatile installation
• Withstands high surge stresses without damage
• Minimal changes in voltage versus current as defined by voltage regulation specifications

Applications

• Voltage regulation in electronic circuits
• Power supply protection against overvoltage conditions
• Reference voltage generation in measurement systems

Procurement Notes

Verify that the component matches the specific part number 1N5382/TR12 to ensure correct voltage rating and tolerance. Confirm the presence of the TR12 suffix indicates tape-and-reel packaging rather than bulk or cut tape. Check RoHS compliance status if environmental regulations apply to your assembly process. Ensure adequate heat sinking is available during operation to maintain performance within maximum ratings.

Selection Notes

Select this component when a precise 140 V reference is required with tight manufacturing tolerances. The B suffix ensures a ±5% deviation, suitable for applications demanding higher accuracy than standard general-purpose diodes. Consider the thermal resistance characteristics and derating curves to determine appropriate cooling methods for continuous operation at full power dissipation.

Part Context

This device belongs to the 1N5333B through 1N5388B series of 5-watt Zener diodes manufactured by Microsemi. The series offers a wide selection of voltages ranging from 3.3 V to 200 V. These components are designed for robust performance in demanding environments, utilizing void-free transfer molded epoxy bodies that meet UL94V-0 flammability standards.

Replacement Considerations

Equivalent parts include the 1N5382A for looser tolerance requirements or the 1N5382C for tighter precision needs. Surface mount alternatives such as SMBJ5382B provide similar electrical characteristics in a different form factor. Verify pinout compatibility and thermal management capabilities before substituting.