1N5357B

Overview

The Diotec Semiconductor 1N5357B is a non-planar silicon Zener diode designed for through-hole mounting in the DO-201 axial leaded package. It provides a nominal Zener voltage of 20 V with a standard tolerance of ±5%. The device supports a maximum power dissipation of 5 W at an ambient temperature of 50°C and can withstand non-repetitive peak surge power up to 80 W. Operating junction temperatures range from -50°C to +150°C, while storage temperatures extend to +175°C. Electrical characteristics include a dynamic resistance of 3 Ohms at the test current of 65 mA and a reverse leakage current of 500 nA at 15.2 V.

Feature Summary

• High power dissipation capability suitable for robust voltage regulation applications
• Non-planar technology construction ensuring stable performance across commercial and industrial grades
• Compliant with RoHS directives and REACH regulations

Applications

• Voltage stabilization circuits
• Linear voltage regulators
• Overvoltage protection (uni-directional)

Procurement Notes

Verify that the specific part number matches the required electrical parameters, particularly the 20 V Zener voltage and 5 W power rating. Confirm compliance requirements such as RoHS status if applicable to your manufacturing process. Ensure the DO-201 package dimensions align with your PCB layout constraints. Check for any suffixes like -Q or -AQ if automotive qualification is needed, though the base model is standard commercial grade.

Selection Notes

Select this component when a reliable 20 V reference or regulator is needed in a high-power environment. The DO-201 package allows for easy manual or automated through-hole assembly. Consider the thermal resistance values when designing heat dissipation strategies, especially if operating near the maximum power limits. Verify that the ±5% tolerance meets the precision requirements of your specific circuit design.

Part Context

This component belongs to the 1N5345B through 1N5388B series of Zener diodes manufactured by Diotec Semiconductor. The series covers a wide voltage range from 8.7 V to 200 V, all sharing the same 5 W power dissipation rating and DO-201 package style. These devices utilize non-planar technology and are intended for general-purpose commercial and industrial applications requiring robust voltage regulation.

Replacement Considerations

Cross-reference with other manufacturers' 1N5357 equivalents to ensure pinout compatibility and matching electrical specifications. Verify that substitute parts meet the same 5 W power rating and 20 V Zener voltage tolerance. Check for any differences in thermal resistance or package dimensions that might affect mechanical fit and thermal performance.

FAQ

What is the maximum non-repetitive peak power dissipation?

The 1N5357B can handle a non-repetitive peak power dissipation of 80 W for pulses shorter than 8.3 ms.

Is this component suitable for automotive applications?

The standard 1N5357B is rated for commercial/industrial use. Automotive-grade versions are available with the -Q (AEC-Q101 compliant) or -AQ (qualified) suffixes.