1N5369B

Overview

The onsemi 1N5369B is a 5 Watt Zener voltage regulator diode from the 1N53 series, housed in an axial lead Surmetic 40 (DO-15) plastic package. It features a nominal Zener voltage of 51 V with a ±5% tolerance and a maximum Zener impedance of 27 Ω at a test current of 25 mA. The device supports a maximum steady-state power dissipation of 5 W and operates within a junction temperature range of -65°C to +200°C. It exhibits a maximum reverse leakage current of 500 nA at 38.8 V and offers high surge capability up to 180 W for 8.3 ms pulses.

Feature Summary

• Utilizes silicon-oxide passivated junctions for tight electrical limits and superior operating characteristics.
• Features void-free, transfer-molded thermosetting plastic packaging providing corrosion resistance and environmental protection.
• Provides robust transient performance with a surge rating of up to 180 W at 8.3 ms pulse width.
• Guarantees maximum limits on multiple electrical parameters including Zener voltage, impedance, and leakage current.

Applications

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

Procurement Notes

Verify the specific ordering suffix when purchasing. The base part number 1N5369B may be supplied without a suffix or with a 'G' suffix indicating a Pb-Free package. Confirm the required packaging format, such as bulk boxes or tape and reel, as availability varies by manufacturer configuration. Ensure compliance with RoHS directives if lead-free versions are mandated for the assembly process.

Selection Notes

Select this component for applications requiring a precise 51 V reference with high power handling capabilities. The DO-15 package allows for through-hole mounting suitable for general-purpose industrial electronics. Consider the thermal resistance characteristics and derating requirements above 25°C to ensure reliable operation under continuous load conditions.

Part Context

This component belongs to the 1N53 Series of 5 Watt Zener regulators produced by onsemi. The series covers a wide voltage range from 3.3 V to 200 V, utilizing standardized JEDEC type numbering. The 1N5369B specifically addresses the 51 V segment, sharing mechanical dimensions and processing technologies with other devices in the family.

Replacement Considerations

Cross-reference with equivalent 5W 51V Zener diodes from other manufacturers such as Microsemi or Panjit. Verify that substitute parts match the DO-15 package outline and maintain similar impedance and leakage specifications to ensure circuit compatibility.