1N5387BRLG

Overview

The onsemi 1N5387BRLG is a silicon-oxide passivated Zener diode from the 1N53 Series, rated for 5 watts of steady-state power dissipation. It provides a nominal reverse Zener voltage of 190 V with a ±5% tolerance (range 180.5 V to 199.5 V) at a test current of 5 mA. The device features a maximum dynamic impedance of 450 Ω and a maximum leakage current of 0.5 µA at its breakdown voltage. Packaged in an axial lead transfer-molded plastic case (CASE 017AA/DO-201AE), it operates within a junction temperature range of -65°C to +200°C.

Feature Summary

• Utilizes silicon-oxide passivated junctions for superior operating characteristics and environmental protection.
• Offers high surge capability with ratings up to 180 W for non-repetitive pulses of 8.3 ms duration.
• Includes robust electrostatic discharge protection rated at Class 3 (>16 kV) per the Human Body Model.

Applications

• Voltage regulation in circuits requiring stable reference levels near 190 V.
• Protection against transient overvoltage events and electrical surges.
• General-purpose clamping applications in industrial or commercial electronic systems.

Procurement Notes

Verify that the ordering suffix 'RLG' corresponds to the specific tape and reel packaging configuration required for automated assembly processes. Confirm that the component meets Pb-Free standards as indicated by the 'G' suffix in the manufacturer's documentation. Ensure compatibility with standard axial lead mounting techniques and verify thermal management requirements for continuous operation at the specified power dissipation limits.

Selection Notes

Select this component when a precise 190 V regulation point is necessary within the 1N53 series family. The B-suffix guarantees a tight ±5% voltage tolerance, making it suitable for applications where wider variations are unacceptable. Consider the DO-201AE package dimensions and thermal resistance characteristics to ensure adequate heat sinking for sustained 5 W operation without exceeding maximum junction temperatures.

Part Context

This part belongs to the 1N53 Series of 5 Watt Surmetic 40 Zener Voltage Regulators manufactured by onsemi. The series covers a broad voltage range from 3.3 V to 200 V, utilizing transfer-molded plastic packages designed for durability. The 1N5387B variant specifically targets the higher voltage end of the spectrum, providing reliable performance in demanding environments through its specialized oxide passivation technology.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N5387B devices, such as those produced by Microsemi or Central Semiconductor, provided they adhere to the same JEDEC specifications and physical dimensions. Verify that any replacement maintains the 5 W power rating and 190 V nominal voltage to ensure circuit functionality remains unchanged.