1N5346B BK

Overview

The Central Semiconductor Corp 1N5346B BK is a silicon planar power Zener diode designed for stabilizing and clipping circuits. It features a 9.1 V nominal Zener voltage with a ±5% tolerance, indicated by the 'B' suffix. The device operates in a DO-201AE (DO-15) axial leaded package, providing a maximum DC power dissipation of 5 W. Key electrical parameters include a maximum reverse leakage current of 7.5 µA at 6.9 V, a maximum dynamic impedance of 2 Ω, and a forward voltage of 1.2 V at 1 A. It supports an operating temperature range from -65 °C to +200 °C.

Feature Summary

• Utilizes silicon planar technology for robust performance in high-power applications
• Provides stable voltage regulation suitable for stabilizing and clipping circuits
• Features a molded plastic case with built-in strain relief for mechanical durability

Applications

• Voltage stabilization in power supply circuits
• Signal clipping and waveform shaping
• Overvoltage protection for sensitive electronic components

Procurement Notes

Verify the specific ordering suffix required for plating options when placing orders. The suffix "TIN/LEAD" must be added to request Tin/Lead plated devices, while "PBFREE" is used for Lead-Free versions. Confirm that the requested configuration matches the intended environmental compliance requirements before finalizing procurement.

Selection Notes

Select this component for designs requiring a standard 9.1 V reference with tight ±5% tolerance. Ensure the circuit layout accommodates the axial through-hole mounting style and provides adequate heat sinking to manage the 5 W power dissipation rating. Verify that the operating voltage range remains within the specified limits to maintain reliable regulation.

Part Context

This part belongs to the JEDEC registered 1N5333B through 1N5388B series of 5.0 watt Zener diodes. The series offers a wide voltage selection from 3.3 V to 200 V, with tolerances identified by specific suffix letters. The 1N5346B specifically addresses the 9.1 V segment of this standardized lineup.

Replacement Considerations

Central Semiconductor lists CZ5346B as the replacement for the 1N5346B.