1N5378BG

Overview

The onsemi 1N5378BG is a silicon-oxide passivated junction Zener diode rated for 5 watts of steady-state power dissipation. It provides a nominal reverse Zener voltage of 100 V with a ±5% tolerance, operating within a range of 95 V to 105 V at a test current of 12 mA. The device features a maximum dynamic impedance of 90 Ω and supports surge ratings up to 180 W for 8.3 ms pulses. Packaged in an axial lead Surmetic 40 (CASE 017AA) plastic housing, it operates reliably across a temperature range of -65°C to +200°C.

Feature Summary

• Utilizes silicon-oxide passivated junctions for superior electrical characteristics and environmental protection.
• Provides high surge current capability with a rating of up to 180 W for short-duration pulses.
• Features robust ESD protection meeting Class 3 standards exceeding 16 kV per the Human Body Model.

Applications

• Voltage regulation in electronic circuits requiring stable reference levels.
• Protection against transient overvoltage events and surge currents.
• General-purpose clamping applications in industrial environments.

Procurement Notes

Verify that the ordering suffix 'G' corresponds to the Pb-Free package designation as specified in the datasheet. Confirm the component utilizes the CASE 017AA axial lead configuration. Ensure compliance with RoHS directives if lead-free status is required for the specific assembly process.

Selection Notes

Select this component when a precise 100 V regulation point is necessary within a 5 W power envelope. The ±5% tolerance suits applications requiring tighter voltage accuracy than standard general-purpose diodes. Consider the thermal resistance characteristics and derating requirements above 25°C ambient temperature during circuit design.

Part Context

This part belongs to the 1N53xxB series of 5 Watt Zener Voltage Regulators manufactured by onsemi. The series covers a broad voltage spectrum from 3.3 V to 200 V, utilizing transfer-molded plastic packages designed for common environmental conditions. The B-suffix denotes a ±5% voltage tolerance specification.

Replacement Considerations

Cross-reference with other manufacturers offering the 1N5378B JEDEC registered type number. Verify that substitute components match the 100 V nominal voltage, 5 W power rating, and axial lead mechanical dimensions to ensure compatibility with existing board layouts.