1N5357B

Overview

The Microsemi Corporation 1N5357B is a silicon unidirectional voltage regulator diode belonging to the JEDEC registered 1N5333-5388B series. It provides a nominal Zener voltage of 20 V with a standard tolerance of ±5%, indicated by the 'B' suffix. The device features a maximum power dissipation of 5.0 watts and operates within a temperature range of -65°C to +150°C. Electrical characteristics include a test current of 65 mA, a maximum dynamic impedance of 3.0 ohms, and a maximum reverse leakage current of 0.5 µA at 14.4 V.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for versatile integration
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Constructed with a void-free transfer molded thermosetting epoxy body

Applications

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

Procurement Notes

Verify that the component matches the specific JEDEC registration requirements for your design. Confirm the terminal plating type (Tin-Lead or RoHS Compliant) aligns with assembly processes. Ensure adequate heat sinking is provided to maintain performance within the specified thermal resistance limits during operation.

Selection Notes

Select this component when a 20 V regulation point is required with a ±5% tolerance. Consider the T-18 package dimensions for board layout constraints. Evaluate thermal management needs based on the junction-to-ambient resistance specifications to ensure reliable operation under steady-state power conditions.

Part Context

This part belongs to the 1N5333B through 1N5388B series of 5-watt silicon Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers a wide voltage selection from 3.3 V to 200 V, utilizing specific suffix letters to denote different voltage tolerances. These devices are designed for robust performance in various industrial and commercial applications.

Replacement Considerations

MQ1N5357BE3 and MX1N5357BE3 are confirmed military equivalent screening levels available by adding prefixes to the base part number.