1SMB5946B-13

Single Zener Diodes Overview

The 1SMB5946B-13 is a surface mount power Zener diode manufactured by Diodes Incorporated. It features a nominal Zener voltage of 75 V with a standard tolerance of ±5%, ranging from 71.25 V to 78.75 V. The device operates at a test current of 5 mA and exhibits a maximum Zener impedance of 140 Ohms. It provides a power dissipation of 3 W in an SMB (DO-214AA) package, with a maximum reverse leakage current of 1 µA. The component supports an operating temperature range from -65°C to +150°C.

Single Zener Diodes Feature Summary

• Provides 3.0W power dissipation capability for high-power regulation applications.
• Features a robust ESD rating exceeding 16kV per the Human Body Model.
• Manufactured with lead-free finish and complies with RoHS directives.
• Designed ideally for automated assembly processes.

Single Zener Diodes Applications

• Voltage regulation circuits requiring stable reference voltages.
• Protection against overvoltage transients in electronic systems.
• Clamping applications in signal processing paths.

Single Zener Diodes Procurement Notes

Verify the specific suffix '-13' corresponds to the tape and reel packaging configuration containing 3000 units per reel. Confirm that the 'B' designation aligns with the required ±5% voltage tolerance specification. Ensure compliance with RoHS 3 and halogen-free requirements matches project constraints. Validate the SMB package dimensions against PCB footprint guidelines before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a 75 V regulation point is required within a surface mount design. The 3 W power rating allows for significant thermal handling compared to lower-power alternatives. Consider the 140 Ohm impedance value for dynamic load regulation needs. The wide operating temperature range ensures reliability in harsh environments where ambient temperatures fluctuate significantly.

Single Zener Diodes Part Context

This part belongs to the 1SMB59xxB series of surface mount power Zener diodes from Diodes Incorporated. The series covers a nominal voltage range from 6.2 V to 200 V. All devices share the same SMB plastic package and 3 W power dissipation characteristics. The series is designed to replace axial-leaded equivalents while offering improved mechanical stability for modern PCB assembly techniques.

Single Zener Diodes Replacement Considerations

Direct replacements must match the 75 V nominal voltage, 3 W power rating, and SMB package. Verify that substitute components maintain the ±5% tolerance and similar impedance characteristics. Check if alternative manufacturers offer equivalent JEDEC DO-214AA packages with compatible thermal resistance values.