1N5351B

Overview

The onsemi 1N5351B is a 5 Watt Zener diode featuring silicon-oxide passivated junctions housed in an axial lead, transfer-molded plastic package (Surmetic 40). It provides a nominal reverse Zener voltage of 14 V with a ±5% tolerance. The device operates within a temperature range of -65°C to +200°C and offers high surge capability up to 180 W at 8.3 ms. Electrical characteristics include a maximum dynamic impedance of 2.5 Ω at the test current of 100 mA and a maximum leakage current of 1 µA.

Feature Summary

• Utilizes silicon-oxide passivated junction technology for superior operating characteristics and environmental protection.
• Features a void-free, transfer-molded thermosetting plastic case that is corrosion resistant and readily solderable.
• Provides robust transient protection with a non-repetitive peak surge rating of up to 180 W.

Applications

• Voltage regulation circuits requiring stable reference voltages.
• Overvoltage protection for sensitive electronic components.
• Clamping applications in power supply input stages.

Procurement Notes

Verify the specific ordering suffix when purchasing. The standard '1N5351B' designation indicates the base component, while the '/G' suffix denotes a Pb-Free package variant. Confirm the required packaging format, such as bulk boxes or tape and reel, matches the production line requirements before finalizing the order.

Selection Notes

Select this component for designs requiring a precise 14 V reference with tight tolerance limits. Ensure the application accounts for the 5 W power dissipation limit and derating requirements above 25°C. Verify that the axial lead mounting position and thermal resistance characteristics align with the system's heat management strategy.

Part Context

This part belongs to the 1N53 Series, a comprehensive family of 5 Watt Zener voltage regulators manufactured by onsemi. The series covers a wide voltage range from 3.3 V to 200 V, utilizing consistent Surmetic 40 packaging. The 1N5351B specifically addresses the mid-range voltage segment within this standardized product line.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N5351B equivalents, such as those from Diodes Incorporated or Micro Commercial Components. Ensure any replacement maintains the DO-201AE form factor, 5 W power rating, and 14 V nominal voltage specification.