1N5345B

Single Zener Diodes Overview

The onsemi 1N5345B is a silicon Zener diode with an 8.7 V nominal voltage and ±5% tolerance. It operates in a DO-201 axial lead package, rated for 5 W steady-state power dissipation at 25°C with a derating factor of 40 mW/°C above that temperature. The device features a maximum dynamic impedance of 2 Ω at the test current of 150 mA and a reverse leakage current of 200 µA at 9.5 V. It withstands a non-repetitive surge current up to 6.6 A (8.3 ms pulse) and operates within a junction temperature range of -65°C to +200°C.

Single Zener Diodes Feature Summary

• Utilizes silicon-oxide passivated junction technology for improved operating characteristics
• Encased in a void-free, transfer-molded thermosetting plastic package resistant to corrosion
• Provides high ESD protection capability exceeding 16 kV per Human Body Model standards

Single Zener Diodes Applications

• Voltage regulation circuits requiring stable reference levels
• Overvoltage protection stages in electronic systems
• Clamping applications for transient suppression

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix when purchasing; the 'G' suffix indicates a Pb-Free package variant. Confirm compliance with RoHS directives if required by your manufacturing process. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity and traceability of the semiconductor components.

Single Zener Diodes Selection Notes

Select this component for through-hole designs needing robust 5 W power handling capabilities. The axial lead configuration facilitates easy mounting on standard PCBs or chassis. Consider the thermal resistance characteristics and ambient operating temperatures to ensure the device remains within its safe operating area during continuous operation.

Single Zener Diodes Part Context

This part belongs to the 1N53 Series of Surmetic 40 Zener Voltage Regulators manufactured by onsemi. The series offers a wide voltage range from 3.3 V to 200 V in a standardized axial lead package. These devices are designed for general-purpose voltage regulation and protection tasks across various industrial and commercial electronics applications.

Single Zener Diodes Replacement Considerations

Compatible substitutes include other manufacturers' 1N5345B equivalents meeting the same JEDEC specifications. Verify that replacement parts maintain identical pinout configurations, power ratings, and voltage tolerances to ensure seamless integration without circuit redesign.

Single Zener Diodes FAQ

What is the maximum non-repetitive surge current rating?

The device can withstand a peak surge current of 6.6 A for an 8.3 ms square-wave pulse width.

How is polarity indicated on the component?

The cathode terminal is identified by a visible polarity band printed on the exterior of the plastic package.