1N5331

Single Diodes Overview

The 1N5331 is a silicon unidirectional voltage regulator diode belonging to the JEDEC registered 1N5333-5388B series. It provides voltage regulation with a nominal breakdown voltage of 30V and a power dissipation rating of 5W in an axial-leaded plastic encapsulated package. The device features low thermal resistance design, allowing operation at high maximum DC currents when adequate heat sinking is applied. Standard voltage tolerances are available with specific suffixes, such as ±5% for the B suffix.

Single Diodes Feature Summary

• JEDEC registered axial-leaded voltage regulation
• High power dissipation capability with low thermal resistance
• Flexible mounting terminals for standard through-hole applications

Single Diodes Applications

• Voltage regulation over broad operating current ranges
• Temperature stable reference circuits
• General purpose protection against voltage spikes

Single Diodes Procurement Notes

Verify the specific voltage tolerance suffix required for the application, as standard tolerances vary by letter code. Confirm that the procurement channel sources from authorized Microchip or Microsemi distributors to ensure authenticity. Check for RoHS compliance status if environmental regulations apply, noting that compliant versions may require specific ordering suffixes. Ensure adequate heat sinking is planned for the PCB layout to support the 5W power rating.

Single Diodes Selection Notes

Select this component for applications requiring robust, high-power voltage regulation in a traditional axial package. Consider the thermal management requirements carefully due to the 5W dissipation rating. Evaluate the need for specific tolerance levels, as tighter tolerances require different suffix codes. This device is suitable for environments where ESD sensitivity is a concern, given its non-sensitive nature per relevant military standards.

Single Diodes Part Context

This part belongs to a long-standing series of 5-watt Zener diodes originally developed under Microsemi and now managed by Microchip Technology. The series covers a wide voltage range from 3.3V to 200V. These components are often used in industrial and military-grade equipment where reliability and proven performance are critical. The axial lead format ensures compatibility with legacy board designs.

Single Diodes Replacement Considerations

Surface mount equivalents are available in the SMBJ5333 to SMBJ5388B or SMBG5333B to SMBG5388B series. For military screening requirements, prefixes such as MQ, MX, or MV can be added to access JAN, JANTX, or JANTXV levels respectively.