1N5388/TR12

Overview

The Microsemi Corporation 1N5388/TR12 is a JEDEC registered silicon Zener diode with a nominal voltage of 200 V and a maximum power dissipation of 5.0 watts at 25°C. It features a T-18 axial lead package and operates within a temperature range of -65°C to +150°C. The device has a maximum reverse current of 0.5 µA at 144 V, a maximum dynamic impedance of 480 ohms, and a maximum regulator current of 23.6 mA. The TR12 suffix indicates tape and reel packaging compliant with EIA-296 standards.

Feature Summary

• Provides stable voltage regulation across broad operating currents and temperatures
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Features flexible axial-lead mounting terminals for versatile installation

Applications

• Voltage regulation in electronic circuits
• Surge protection applications
• Reference voltage sources

Procurement Notes

Verify the specific suffix requirements against the datasheet to ensure correct tolerance and packaging options. Confirm RoHS compliance status if required by your manufacturing process. Check for any military equivalent screening levels or alternative prefixes if higher reliability standards are needed. Ensure adequate heat sinking is planned for operation near maximum power dissipation limits.

Selection Notes

Select this component when a 200 V Zener voltage with 5-watt power handling is required. Consider the ±5% tolerance associated with the B suffix unless tighter specifications are available via other suffixes. Evaluate thermal resistance requirements based on the intended mounting method and ambient temperature conditions.

Part Context

This part belongs to the 1N5333B through 1N5388B series of 5.0 watt Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V. Different tolerances are identified by specific suffix letters on the part number. These plastic encapsulated Zeners have a moisture classification of Level 1.

Replacement Considerations

Surface mount equivalents are available as SMBJ5333 to SMBJ5388B or SMBG5333B to SMBG5388B.