SMBJ4747A/TR13

Single Zener Diodes Overview

The SMBJ4747A/TR13 is a surface-mount Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 20 V with a tolerance of ±5%. The device operates in the DO-214AA (SMB) package and dissipates up to 2 W of power. Key electrical parameters include a maximum reverse leakage current of 5 µA and a Zener impedance of 16 Ω at a test current of 15.5 mA. It supports a forward current of 200 mA and functions within a temperature range of -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation with a 20 V nominal breakdown voltage.
• Capable of handling high peak pulse power dissipation for transient protection.
• Utilizes a compact surface-mount SMB package for automated assembly.

Single Zener Diodes Applications

• Voltage reference circuits requiring precise 20 V levels
• Overvoltage protection in industrial control systems
• Clamping applications in communication equipment

Single Zener Diodes Procurement Notes

Verify the specific suffix TR13 indicates tape-and-reel packaging when ordering. Confirm RoHS compliance status as it may vary by production batch. Ensure the DO-214AA footprint matches the target PCB design. Cross-reference the manufacturer part number with official Microchip documentation to validate specifications before integration into critical designs.

Single Zener Diodes Selection Notes

Select this component for applications requiring a 20 V Zener voltage in a surface-mount format. The 2 W power rating suits moderate power dissipation needs compared to lower-power SMD alternatives. Consider the ±5% tolerance for precision requirements. Evaluate the thermal management capabilities of the SMB package relative to the expected ambient operating conditions.

Single Zener Diodes Part Context

This component belongs to the SMBJ series of Zener diodes from Microchip Technology. The series offers various voltage options in the standardized SMB (DO-214AA) package. These devices are engineered for robust performance in space-constrained electronic designs requiring reliable voltage regulation or transient suppression capabilities.

Single Zener Diodes Replacement Considerations

Compatible substitutes include other 20 V, 2 W Zener diodes in the DO-214AA package. Verify pinout compatibility and thermal characteristics before substitution. Alternative manufacturers may offer equivalent parts with similar electrical ratings but different physical dimensions or mounting requirements.