1N5374B

Overview

The onsemi 1N5374B is a single-channel Zener voltage regulator diode from the 1N53 Series, housed in an axial lead Surmetic 40 (DO-15) package. It provides a nominal reverse Zener voltage of 75 V with a tolerance of ±5%. The device features a maximum steady-state power dissipation of 5 W at 25°C and operates within a junction temperature range of -65°C to +200°C. Key electrical parameters include a test current of 20 mA, a maximum Zener impedance of 45 Ω, and a maximum reverse leakage current of 1.6 µA.

Feature Summary

• Utilizes silicon-oxide passivated junctions for superior operating characteristics and tight parameter limits.
• Offers high surge current capability rated up to 180 W for an 8.3 ms pulse width.
• Provides robust environmental protection through a void-free, transfer-molded thermosetting plastic case.
• Features an ESD rating of Class 3 exceeding 16 kV per the Human Body Model.

Applications

• Voltage regulation in electronic circuits requiring stable reference levels.
• Protection against transient overvoltage events and surge currents.
• General-purpose clipping and clamping applications in signal processing.

Procurement Notes

Verify that the ordering suffix matches the required packaging configuration, such as bulk boxes or tape and reel formats. Confirm RoHS compliance status if restricted substances are a constraint. Ensure the specific B-suffix designation aligns with the required ±5% voltage tolerance. Cross-reference the manufacturer part number with official datasheets to validate all electrical specifications before integration.

Selection Notes

Select this component when a precise 75 V regulation point is necessary within a 5 W power budget. The axial lead format facilitates through-hole mounting on standard printed circuit boards. Consider the thermal resistance characteristics and derating requirements above 25°C ambient temperature to ensure reliable operation under continuous load conditions.

Part Context

This device belongs to the 1N53 Series 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 mechanical packaging and manufacturing processes. The 1N5374B specifically addresses mid-range voltage requirements within this comprehensive lineup.

Replacement Considerations

Compatible substitutes include other manufacturers' equivalents designated as 1N5374B. Verify that alternative sources meet the same JEDEC type number standards and maintain identical ±5% tolerance and 5 W power dissipation ratings.

FAQ

What is the maximum non-repetitive surge current rating?

The device supports a surge rating of up to 180 W for an 8.3 ms pulse width.

How is polarity indicated on the component?

Polarity is identified by a color band on the cathode end of the axial lead package.