1N5931BRL

Single Zener Diodes Overview

The onsemi 1N5931BRL is a single Zener voltage regulator diode from the 1N59xxB series, housed in an axial-lead DO-41 (Surmetic 30) plastic package. It provides a nominal Zener voltage of 18 V with a ±5% tolerance and a maximum steady-state power dissipation of 3 W at a lead temperature of 75°C. The device operates within a junction and storage temperature range of -65°C to +200°C. Electrical characteristics include a test current (IZT) of 20.8 mA, a maximum Zener impedance (ZZT) of 650 Ω at IZT, and a maximum reverse leakage current (IR) of 1 µA at VR = 13.7 V.

Single Zener Diodes Feature Summary

• Utilizes silicon-oxide passivated junctions for superior operating characteristics and environmental protection.
• Features a void-free, transfer-molded thermosetting plastic package that is corrosion resistant and readily solderable.
• Provides high surge capability with a rating of 98 W at 1 ms pulse duration.

Single Zener Diodes Applications

• Voltage regulation in electronic circuits
• Protection against electrostatic discharge (ESD)
• General-purpose rectification and clamping applications

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix 'R' indicates tape and reel packaging containing 6000 units per reel. Confirm compliance with RoHS directives by checking for the 'G' suffix or Pb-Free indicator if required. Ensure the component meets the specified JEDEC outline dimensions for the DO-41 case before integration into the assembly process.

Single Zener Diodes Selection Notes

Select this component when a stable 18 V reference is required in a through-hole configuration. The 3 W power rating supports higher current loads compared to standard 1 W Zeners. Verify that the application environment remains within the -65°C to +200°C operating temperature limits to ensure reliable performance.

Single Zener Diodes Part Context

This part belongs to the 1N5913B Series, which covers a wide Zener voltage range from 3.3 V to 200 V. The series is characterized by tight tolerances and excellent thermal stability. The 1N5931B variant specifically targets applications requiring an 18 V breakdown voltage with precise regulation capabilities.

Single Zener Diodes Replacement Considerations

Compatible substitutes include other manufacturers' 1N5931B equivalents in the DO-41 package. Ensure replacement parts match the 3 W power dissipation, 18 V nominal voltage, and ±5% tolerance specifications.

Single Zener Diodes FAQ

What is the maximum steady-state power dissipation?

The maximum steady-state power dissipation is 3 W at a lead temperature of 75°C, with a derating factor of 24 mW/°C above this temperature.

How is the polarity indicated on the device?

Polarity is denoted by a cathode band on the plastic body, identifying the cathode terminal.