1N5343BG

Single Zener Diodes Overview

The onsemi 1N5343BG is a 5 Watt Zener voltage regulator featuring silicon-oxide passivated junctions in an axial lead Surmetic 40 package. It provides a nominal Zener voltage of 7.5 V with a tolerance of ±5%. The device operates within a temperature range of -65°C to +200°C and includes ESD protection rated at Class 3 (>16 kV) per the Human Body Model. Electrical characteristics include a maximum Zener impedance of 1.5 Ohms at IZT, reverse leakage current of 10 µA at VR, and a surge rating of up to 180 W for 8.3 ms pulses.

Single Zener Diodes Feature Summary

• Utilizes silicon-oxide passivated junctions for superior operating characteristics and tight parameter limits.
• Features robust surge handling capability with ratings up to 180 W for short-duration pulses.
• Includes high-level electrostatic discharge protection compliant with Human Body Model standards.

Single Zener Diodes Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in measurement systems

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'G' corresponds to the Pb-Free package configuration as specified in the datasheet. Confirm the component matches the Surmetic 40 (Case 017AA) mechanical outline and ensure compatibility with the required soldering temperatures and mounting positions before integration into the final assembly.

Single Zener Diodes Selection Notes

Select this component when a precise 7.5 V reference with a 5% tolerance is required in a high-power dissipation environment. The axial lead format facilitates through-hole mounting, while the wide thermal operating range supports demanding industrial conditions. Ensure the application does not exceed the maximum steady-state power dissipation or junction temperature limits defined in the electrical characteristics.

Single Zener Diodes Part Context

This part belongs to the 1N53 Series of 5 Watt Zener Voltage Regulators manufactured by onsemi. The series offers a broad voltage range from 3.3 V to 200 V, all housed in the same transfer-molded plastic axial lead package. The 'B' designation indicates a specific tolerance class, ensuring consistent performance across the product line.

Single Zener Diodes Replacement Considerations

Compatible replacements must match the 7.5 V nominal Zener voltage, 5 W power rating, and ±5% tolerance. Verify that alternative devices support the Surmetic 40 package dimensions and meet the required thermal resistance and surge current specifications for direct substitution.