SMBZ5937B-M3/52

Single Zener Diodes Overview

The SMBZ5937B-M3/52 is a surface-mount power voltage-regulating diode manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 33 V with a tolerance of ±5%. The device operates in the SMB (DO-214AA) package and provides a maximum steady-state power dissipation of 3000 mW at a lead temperature of 75 °C, or 550 mW at an ambient temperature of 25 °C. Electrical characteristics include a maximum Zener impedance of 33 Ω at a test current of 11.4 mA, a reverse leakage current of 1 µA at 25.1 V, and a maximum DC Zener current of 45 mA. The component supports an operating junction and storage temperature range from -55 °C to +150 °C.

Single Zener Diodes Feature Summary

• Low profile package suitable for automated placement
• Low Zener impedance and low regulation factor
• Halogen-free, RoHS-compliant commercial grade construction

Single Zener Diodes Applications

• General purpose voltage regulation
• Circuit protection applications

Single Zener Diodes Procurement Notes

Verify that the ordering suffix /52 corresponds to the 750-unit base quantity on a 7-inch diameter plastic tape and reel. Confirm the M3 designation indicates halogen-free material compliance alongside standard RoHS requirements. Ensure the procurement documentation matches the specific Vishay General Semiconductor - Diodes Division manufacturer identification.

Single Zener Diodes Selection Notes

Select this component when a 33 V regulation point is required within the SMB surface-mount form factor. Evaluate thermal management requirements carefully, as the maximum power dissipation drops significantly from 3 W at elevated lead temperatures to 550 mW at standard ambient conditions. Verify that the 33 Ω dynamic impedance meets the circuit's noise and stability specifications.

Single Zener Diodes Part Context

This part belongs to the SMBZ5919B through SMBZ5945B series of surface-mount power voltage-regulating diodes. The series covers a wide Zener voltage range from 5.6 V to 68 V. All devices share the same SMB (DO-214AA) mechanical outline and standardized electrical testing parameters defined in datasheet document number 89418.

Single Zener Diodes Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.