1N5346BG

Overview

The onsemi 1N5346BG is a silicon planar power Zener diode with a nominal voltage of 9.1 V and a maximum steady-state power dissipation of 5 W at 25°C. It features a ±5% tolerance, a reverse leakage current of 0.22 mA maximum at 6.9 V, and a maximum Zener impedance of 2 Ohms at the test current of 150 mA. The device operates within a temperature range of -65°C to +200°C and utilizes an axial lead plastic package (CASE 017AA).

Feature Summary

• Utilizes silicon-oxide passivated junctions for superior operating characteristics.
• Provides high surge rating capability up to 180 W for 8.3 ms pulses.
• Features ESD protection rated at Class 3 (>16 kV) per Human Body Model.

Applications

• Stabilizing circuits requiring high power ratings.
• Clipping circuits utilizing the specified surge capabilities.
• Voltage regulation applications within the defined thermal limits.

Procurement Notes

Verify that the specific part number matches the required Pb-Free status indicated by the G suffix. Confirm the package type corresponds to the axial lead configuration. Ensure compliance with RoHS directives if applicable to the target market. Check datasheet notes regarding derating above 25°C for accurate thermal management planning.

Selection Notes

Select this component when a 9.1 V reference with tight tolerance is required. Consider the 5 W power dissipation limit and the specific thermal resistance values for heat sinking needs. Evaluate the surge current capabilities against potential transient events in the circuit design.

Part Context

This device belongs to the 1N53 Series of 5 Watt Zener Voltage Regulators. The series offers a wide voltage range from 3.3 V to 200 V. All devices in this family share similar mechanical characteristics, including void-free transfer-molded plastic packages and corrosion-resistant external surfaces.

Replacement Considerations

Direct replacements include other manufacturers' versions of the 1N5346B specification. Verify pinout compatibility and ensure equivalent electrical parameters such as impedance and leakage current are met for the specific application requirements.