1N5344B

Single Zener Diodes Overview

The onsemi 1N5344B is a 5 Watt Zener diode from the 1N53 Series, utilizing silicon-oxide passivated junctions in an axial lead Surmetic 40 package. It provides a nominal Zener voltage of 8.2 V with a ±5% tolerance range spanning 7.79 V to 8.61 V at a test current of 150 mA. The device features a maximum Zener impedance of 1.5 Ohms and a reverse leakage current of 10 µA at 10 V. It supports a maximum DC regulator current of 580 mA and withstands surge currents up to 180 W for 8.3 ms pulses. Operating temperatures range from -65°C to +200°C.

Single Zener Diodes Feature Summary

• Utilizes silicon-oxide passivated junctions for superior operating characteristics and tight electrical limits.
• Features void-free, transfer-molded thermosetting plastic packaging that offers corrosion resistance and environmental protection.
• Provides high surge capability rated up to 180 W for 8.3 ms non-repetitive pulses.
• Guarantees maximum limits on multiple electrical parameters including voltage, impedance, and leakage.

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix (e.g., 'G' for Pb-Free) against the required compliance standards before procurement. Confirm the package type matches the design requirements, as options include bulk boxes or tape and reel formats. Ensure the selected variant aligns with the intended thermal management strategy given the 5W dissipation rating.

Single Zener Diodes Selection Notes

Select this component when a stable 8.2V reference is required with high power handling capabilities. The axial lead configuration facilitates through-hole mounting on standard PCBs. Consider the thermal resistance characteristics and derating requirements above 25°C to ensure reliable operation within the specified temperature range.

Single Zener Diodes Part Context

This part belongs to the 1N53 Series of 5 Watt Zener Voltage Regulators manufactured by onsemi. The series covers a broad voltage range from 3.3 V to 200 V, offering consistent performance across various applications requiring robust voltage stabilization and surge protection in industrial and commercial electronics.

Single Zener Diodes Replacement Considerations

Compatible substitutes include other manufacturers' 1N5344B variants such as those from Microsemi, STMicroelectronics, or Diodes Inc., provided they meet the same 5W power rating, 8.2V nominal voltage, and DO-15/Surmetic 40 package dimensions.