1N5350B/TR12

Overview

The Microchip Technology 1N5350B/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, manufactured by Microsemi. It provides voltage regulation at a nominal Zener voltage of 13 V with a standard ±5% tolerance indicated by the B suffix. 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 2.5 Ω, a maximum reverse current of 1.0 µA tested at 9.9 V, and a maximum regulator current of 9.9 A when adequately heat sunk.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole integration
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

• Voltage reference circuits
• Overvoltage protection systems
• Power supply regulation

Procurement Notes

Verify component authenticity and datasheet revision status before procurement. Confirm RoHS compliance requirements as the e3 suffix denotes lead-free plating while the base part may differ. Check for discontinuance notifications or PCNs affecting availability. Ensure thermal management design aligns with specified power dissipation limits.

Selection Notes

Select this component for applications requiring 5-watt power handling and 13-volt regulation. Verify that the ±5% tolerance meets circuit precision needs. Ensure adequate heat sinking is provided to maintain operation within the specified junction-to-lead thermal resistance limits.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon Zener diodes originally produced by Microsemi's Scottsdale Division. The series covers voltages from 3.3V to 200V in a robust plastic encapsulated T-18 case. The TR12 suffix indicates tape and reel packaging compliant with EIA-296 standards.

Replacement Considerations

Equivalent parts include the 1N5350B without the trailing suffix for bulk packaging or the 1N5350e3/TR12 for lead-free specifications. Surface mount alternatives such as SMBJ5350B are available for different form factors.