1N5388BG

Overview

The onsemi 1N5388BG is a single-channel Zener voltage regulator diode from the 1N53 Series, designed for robust performance in demanding environments. It features a nominal reverse Zener voltage of 200 V with a tight tolerance of ±5%. The device is rated for a maximum steady-state power dissipation of 5 W at 25°C and operates within an extended temperature range of -65°C to +200°C. Packaged in a void-free, transfer-molded plastic Surmetic 40 (DO-15) axial lead case, it offers superior silicon-oxide passivation for environmental protection. Key electrical characteristics include a maximum Zener impedance of 480 Ω at a test current of 5 mA and a maximum reverse leakage current of 500 nA.

Feature Summary

• Utilizes silicon-oxide passivated junctions to provide tight limits and improved operating characteristics compared to standard devices.
• Features a void-free, transfer-molded thermosetting plastic package that ensures corrosion resistance and solderability under common environmental conditions.
• Provides high surge capability with a rating of up to 180 W for 8.3 ms pulses, suitable for transient suppression applications.
• Offers enhanced electrostatic discharge (ESD) protection with a Human Body Model rating exceeding 16 kV.

Applications

• Voltage regulation circuits requiring stable reference voltages across broad operating currents and temperatures.
• Transient voltage suppression and overvoltage protection in industrial equipment power inputs.
• High-reliability electronic systems where extended temperature operation and rugged packaging are required.

Procurement Notes

Verify the specific ordering suffix 'G' confirms the Pb-Free package status as defined by onsemi standards. Ensure the procurement documentation references the correct JEDEC type number 1N5388B to match the ±5% tolerance specification. Confirm that the component meets RoHS compliance requirements if applicable to your manufacturing process. Cross-reference the mechanical outline CASE 017AA to ensure compatibility with your PCB footprint and mounting constraints.

Selection Notes

Select this component when a precise 200 V regulation point is needed with strict tolerance requirements. The 5 W power rating necessitates adequate heat sinking or derating considerations above 25°C ambient temperature. Consider the axial lead configuration for through-hole mounting applications. Evaluate the thermal resistance characteristics to ensure the junction temperature remains within safe operating limits during continuous DC operation.

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 advanced silicon-oxide passivation technology. The 1N5388B variant specifically targets the upper end of this voltage spectrum, offering high-voltage regulation capabilities in a durable Surmetic 40 package designed for reliability in harsh environments.

Replacement Considerations

Direct replacements must maintain the 200 V nominal voltage, ±5% tolerance, and 5 W power rating. Verify that alternative manufacturers offer equivalent axial lead packages and similar thermal resistance values. Ensure any substitute part supports the required -65°C to +200°C operating temperature range and matches the polarity band marking convention.