1SMB5933B-13

Single Zener Diodes Overview

The 1SMB5933B-13 is a surface-mount power Zener diode manufactured by Diodes Incorporated in the SMB (DO-214AA) package. It provides a nominal Zener voltage of 22V with a standard tolerance of ±5%, ranging from 20.9V to 23.1V at a test current of 17mA. The device supports a maximum power dissipation of 3.0W and features a maximum reverse leakage current of 1µA at 16.7V. Its thermal resistance from junction to terminal is 25°C/W, and it operates within a temperature range of -65°C to +150°C.

Single Zener Diodes Feature Summary

• Capable of handling 3.0W power dissipation for robust voltage regulation
• Designed for automated assembly processes
• Features high ESD protection rated at Class 3 (>16kV) per Human Body Model
• Manufactured using lead-free, halogen-free, and antimony-free materials

Single Zener Diodes Applications

• Voltage reference circuits
• Over-voltage protection systems
• Clamping applications in electronic equipment

Single Zener Diodes Procurement Notes

Verify that the component matches the specific 1SMB5933B-13 designation to ensure the correct 22V Zener voltage rating. Confirm compliance with RoHS directives and check for the B933 marking code on the device body. Ensure the procurement channel is authorized to avoid counterfeit parts and verify the tape and reel packaging format.

Single Zener Diodes Selection Notes

Select this component when a stable 22V reference or clamp is required in a compact surface-mount design. Consider the 3.0W power rating and thermal resistance values for heat management. Evaluate the ±5% tolerance against circuit requirements and ensure the operating temperature range meets environmental conditions.

Single Zener Diodes Part Context

This part belongs to the 1SMB59xxB series of 3.0W surface mount power Zener diodes from Diodes Incorporated. The series covers a wide nominal Zener voltage range from 6.2V to 200V. All devices in this family share the same SMB package, mechanical dimensions, and general electrical characteristics such as ESD ratings and material composition.

Single Zener Diodes Replacement Considerations

The datasheet does not list official substitute part numbers. Cross-referencing requires matching the 22V nominal voltage, ±5% tolerance, 3.0W power dissipation, and SMB package footprint.

Single Zener Diodes FAQ

What is the marking code for the 1SMB5933B-13?

The product type marking code for the 1SMB5933B-13 is B933.

How is the Zener impedance defined for this device?

Zener impedance is derived by dividing the AC voltage drop across the device by the AC current applied, measured at an AC frequency of 60 Hz with an AC current equal to 0.1 times the DC Zener current.