1N5358B

Overview

The onsemi 1N5358B is a 5 Watt silicon Zener voltage regulator diode with a nominal breakdown voltage of 22 V and a ±5% tolerance. It operates within a junction temperature range of -65°C to +200°C and features a maximum dynamic impedance of 3.5 Ω at a test current of 50 mA. The device utilizes an axial lead Surmetic 40 (DO-15) plastic package, offering high surge capability and robust environmental protection for general-purpose regulation.

Feature Summary

• Utilizes silicon-oxide passivated junctions for superior operating characteristics and tight electrical limits.
• Features a void-free, transfer-molded thermosetting plastic case providing corrosion resistance and environmental protection.
• Includes built-in strain relief and offers high thermal performance with low junction-to-lead thermal resistance.

Applications

• General-purpose voltage regulation in power supply circuits
• Protection against voltage transients and surges
• Reference voltage generation in electronic systems

Procurement Notes

Verify the specific ordering suffix when purchasing; the 'G' suffix indicates a Pb-Free package. Confirm that the required quantity matches standard shipping formats, such as boxes of 1000 units or tape and reel configurations. Ensure compliance with RoHS directives if lead-free components are mandated for the assembly process.

Selection Notes

Select this component for applications requiring a stable 22 V reference with a 5 W power dissipation capacity. Consider the ±5% tolerance and 3.5 Ω impedance for precision requirements. Evaluate the thermal management needs based on the specified junction-to-lead thermal resistance and derating curves above 25°C ambient temperature.

Part Context

This part belongs to the 1N53 Series, a complete line of 5 Watt Zener diodes ranging from 3.3 V to 200 V. The series is characterized by tight limits and improved reliability due to the silicon-oxide passivation technology used in manufacturing all devices within this family.

Replacement Considerations

Cross-reference with other manufacturers' 1N5358B equivalents. Verify that substitute parts match the 22 V nominal voltage, 5 W power rating, DO-15 package dimensions, and ±5% tolerance specifications to ensure functional compatibility.

FAQ

What is the maximum non-repetitive surge current rating?

The device supports a surge rating of up to 180 W at an 8.3 ms pulse width, allowing it to handle significant transient energy events.

How is polarity indicated on the component?

Polarity is marked by a distinct band on the plastic case, which identifies the cathode terminal.