1N5357B BK

Overview

The Central Semiconductor Corp 1N5357B BK is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 20 V with a tolerance of ±5%. The device is rated for a maximum DC power dissipation of 5 W and operates within a junction temperature range of -55°C to +150°C. It utilizes a plastic DO-15 axial leaded package, providing isolation between the case and terminals.

Feature Summary

• Provides stable voltage regulation across a wide operating current range
• Features a rugged plastic encapsulated case for environmental protection
• Offers high reliability with superior lot-to-lot consistency

Applications

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

Procurement Notes

Verify the specific ordering suffix required for plating options when placing orders. The suffix TIN/LEAD indicates tin-lead plated devices, while PBFREE denotes lead-free plating. Confirm availability directly with the manufacturer as standard packaged devices may transition to End of Life status without prior notification.

Selection Notes

Select this component based on the required 20 V breakdown voltage and 5 W power dissipation capability. Ensure the circuit design accommodates the specified thermal resistance and operating temperature limits. Verify that the DO-15 package dimensions fit the intended PCB layout constraints.

Part Context

This part belongs to the 1N5333B through 1N5388B JEDEC registered series of axial-leaded 5.0 watt Zeners. The series provides voltage regulation from 3.3 to 200 volts with various tolerances identified by specific suffix letters. These plastic encapsulated Zeners are moisture classification Level 1 and do not require dry packing.

Replacement Considerations

The official replacement for 1N5357B is CZ5357B.