1N5370B/TR12

Overview

The Microchip Technology 1N5370B/TR12 is a silicon Zener diode with a nominal voltage of 56 V and a power dissipation rating of 5.0 W at 25 °C. It features a ±5% voltage tolerance, a maximum dynamic impedance of 35 Ω, and a maximum reverse current of 0.5 μA. The device operates within a temperature range of -65 °C to +150 °C and utilizes a T-18 axial lead package.

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 integration

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 official datasheets to confirm RoHS compliance status and tape-and-reel packaging specifications. Ensure that thermal management requirements align with the specified junction-to-lead thermal resistance values during procurement planning.

Selection Notes

Select this component when a 5-watt power rating and 56-volt regulation are required. Confirm that the circuit design accommodates the specified dynamic impedance and reverse leakage characteristics. Verify that the operating environment remains within the defined temperature limits for reliable performance.

Part Context

This part belongs to the JEDEC registered 1N5333B through 1N5388B series of 5.0 watt Zener diodes. The 'B' suffix indicates a standard ±5% voltage tolerance, while the '/TR12' designation specifies the tape-and-reel packaging format for automated assembly processes.

Replacement Considerations

Surface mount equivalents such as SMBJ5370B or SMBG5370B are available from the same manufacturer family.