SMZJ3803A-E3/5B

Single Zener Diodes Overview

The SMZJ3803A-E3/5B is a surface mount power voltage-regulating diode manufactured by Vishay General Semiconductor. It utilizes a DO-214AA (SMBJ) package and features a glass-passivated silicon chip junction. The device provides a nominal Zener voltage of 39 V with a tolerance range of 37.1 V to 41.0 V. It supports a maximum steady-state power dissipation of 1500 mW at a lead temperature of 75 °C. The component operates within a junction and storage temperature range of -55 °C to +150 °C, ensuring reliability in general-purpose regulation applications.

Single Zener Diodes Feature Summary

• Glass passivated chip junction for enhanced stability
• Low profile package suitable for automated placement
• Low dynamic Zener impedance for precise regulation
• Meets MSL level 1 per J-ST D-020 standards

Single Zener Diodes Applications

• General purpose voltage regulation
• Circuit protection
• Voltage reference circuits

Single Zener Diodes Procurement Notes

Verify the specific suffix 'E3' confirms RoHS compliance and commercial grade status. Confirm the '5B' packaging code corresponds to the 13-inch diameter plastic tape and reel format containing 3200 units. Ensure the ordering part number matches the required AEC-Q101 qualification if automotive standards are necessary, as standard E3 parts may differ from HE3 variants.

Single Zener Diodes Selection Notes

Select this component when a 39 V Zener voltage with tight tolerance is required in a compact surface mount footprint. Consider the low leakage current specification for high-impedance circuits. Evaluate the thermal derating curves for power dissipation above ambient temperatures. Verify that the DO-214AA package dimensions fit the designated PCB layout constraints.

Single Zener Diodes Part Context

This device belongs to the SMZJ3788B through SMZJ3809B series of surface mount power voltage-regulating diodes. The series offers a wide range of Zener voltages from 9.1 V to 68 V within the same mechanical form factor. These components are designed for high-reliability applications requiring stable voltage regulation in space-constrained environments.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include other SMZJ38xxB variants with similar voltage ratings. Cross-reference datasheet electrical characteristics carefully before substitution.