BZX85C3V9_T50R

Single Zener Diodes Overview

The BZX85C3V9_T50R is a single silicon Zener diode from the BZX85C series, manufactured by onsemi. It features a nominal Zener voltage of 3.7 V with a maximum tolerance of ±5%. The device operates in a DO-41 (DO-204AL) axial leaded glass package. Electrical characteristics include a maximum Zener impedance of 60 Ω at a test current of 60 mA and a maximum leakage current of 500 μA at 1 V. Power dissipation ratings are 1.0 W at 25°C ambient temperature and 1.3 W when mounted at a lead distance of 25 mm. The component supports an operating and storage temperature range from -65°C to +200°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation within a narrow tolerance band for low-voltage applications.
• Features high thermal stability with an extended operating temperature range up to 200°C.
• Utilizes a robust glass encapsulated DO-41 axial leaded package for through-hole mounting.

Single Zener Diodes Applications

• General voltage reference circuits
• Over-voltage protection stages
• Low-voltage regulator designs

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging details. Confirm that the requested part number matches the exact electrical specifications required for the target application. Ensure compliance with RoHS directives if applicable to the manufacturing region. Validate that the component availability status aligns with project timelines before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component for applications requiring precise low-voltage clamping or referencing. The DO-41 package offers higher power handling compared to smaller surface-mount alternatives. Verify that the circuit design accounts for the specified Zener impedance and leakage current limits under expected operating conditions. Ensure adequate thermal management is provided to maintain performance within the rated temperature range.

Single Zener Diodes Part Context

This component belongs to the BZX85C series of Zener diodes produced by onsemi. The series covers a wide range of nominal voltages from 3.3 V to 56 V, all sharing similar physical dimensions and general electrical characteristics. The BZX85C designation indicates a standard tolerance variant housed in the industry-standard DO-41 axial leaded package.

Single Zener Diodes Replacement Considerations

Compatible substitutes include other manufacturers' Zener diodes in the DO-41 package with a nominal voltage of 3.7 V and a tolerance of ±5%. Ensure that any replacement part meets or exceeds the 1.0 W power dissipation rating and the -65°C to +200°C operating temperature range specified for the original component.

Single Zener Diodes FAQ

What is the maximum power dissipation of the BZX85C3V9?

The maximum power dissipation is 1.0 W at an ambient temperature of 25°C. It can reach 1.3 W when mounted with leads extending 25 mm from the package body.

What is the Zener impedance at the test current?

The maximum Zener impedance is 60 Ω when measured at a test current of 60 mA.