1N4488

Single Zener Diodes Overview

The Microchip Technology 1N4488 is a 91 V Zener voltage regulator with a 1.5 W steady-state power dissipation rating in the DO-41 axial lead package. It operates within a junction and storage temperature range of -65 °C to +175 °C. The device features a maximum dynamic impedance of 200 Ohms at a test current of 2.8 mA, with a maximum continuous current of 16 mA. Reverse leakage current is limited to 25 µA at 69.2 V.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction using internal metallurgical bonds for robust performance.
• Military qualification available per MIL-PRF-19500/406 across JAN, JANTX, JANTXV, and JANS levels.
• Inherently radiation hard as described in Microsemi MicroNote 050.
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 method 1020.

Single Zener Diodes Applications

• High-reliability applications where failure cannot be tolerated.
• Voltage regulation over broad operating current and temperature ranges.
• Radiation-hardened circuit designs.

Single Zener Diodes Procurement Notes

Verify the specific reliability level required, such as JAN, JANTX, JANTXV, or JANS, as these designations dictate the manufacturing and testing standards. Confirm RoHS compliance status if applicable, noting that commercial grade versions may differ from military qualified parts. Ensure the ordering suffix matches the desired tolerance and packaging configuration before finalizing procurement.

Single Zener Diodes Selection Notes

Select the 1N4488 when a precise 91 V breakdown voltage is required for high-power regulation up to 1.5 W. Consider the wide operating temperature range and hermetic sealing for harsh environments. Evaluate the need for military qualification levels based on system reliability requirements and radiation exposure conditions.

Single Zener Diodes Part Context

This component belongs to the 1N4460 through 1N4496 series of industry-recognized 1.5 W Zener voltage regulators. The series offers extensive selections from 3.3 to 200 volts with standard 5% tolerance, alongside tighter 1% and 2% options. These devices are designed to replace popular JEDEC registered series while providing superior hermetic sealing and robustness.

Single Zener Diodes Replacement Considerations

JAN1N4488

Single Zener Diodes FAQ

Is the 1N4488 sensitive to electrostatic discharge?

No, the device is non-sensitive to ESD per MIL-STD-750 method 1020.

What is the thermal resistance from junction to lead?

The thermal resistance from junction to lead is 42 °C/W at a lead length of 0.375 inch.