1N5381B/TR8

Overview

The Microsemi 1N5381B/TR8 is a silicon Zener diode with a nominal voltage of 130V and a tolerance of ±5%. It features a 5W power dissipation rating, unidirectional polarity, and an axial-lead T-18 plastic package. The device operates within a temperature range of -65°C to +150°C and includes a TR suffix indicating tape and reel packaging.

Feature Summary

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

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in measurement systems

Procurement Notes

Verify the specific suffix configuration against the datasheet to confirm the presence of the TR tape and reel option. Ensure the ordering part number matches the required JEDEC registration and tolerance specifications. Confirm RoHS compliance status if environmental regulations apply to the assembly process.

Selection Notes

Select this component for applications requiring a 130V Zener reference with standard 5% tolerance. Consider the thermal resistance characteristics when designing heat sinking solutions. Evaluate the maximum steady-state power dissipation limits relative to the ambient operating temperature to ensure reliable long-term performance.

Part Context

This device belongs to the 1N5333B through 1N5388B series of JEDEC registered silicon Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers a wide voltage range from 3.3V to 200V, offering various tolerance options and screening levels for different industrial and military requirements.

Replacement Considerations

Equivalent parts include other manufacturers' 1N5381B variants or the MV1N5381C for tighter tolerance needs. Verify pinout compatibility and thermal performance before substitution.