1N4119UR

Single Zener Diodes Overview

The Microchip Technology 1N4119UR is a glass surface mount Zener diode designed for voltage regulation applications. It operates within the DO-213AA (SMB) package and provides a nominal Zener voltage of 28V with a standard tolerance of ±5%. The device supports a maximum power dissipation of 500 mW and features a Zener impedance of 200 Ohms. It functions reliably across an extended temperature range from -65°C to +175°C, ensuring stability in demanding environments.

Single Zener Diodes Feature Summary

• Utilizes a glass passivation process for enhanced environmental resistance and long-term reliability.
• Features a round-end voltage regulator design optimized for precise clamping and regulation.
• Constructed with internal metallurgical bonding to withstand mechanical stress and thermal cycling.

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements against your design specifications, as variants such as JANTXV or JAN may offer different qualification levels. Confirm that the DO-213AA footprint matches your PCB layout constraints. Ensure compliance with RoHS directives if applicable to your region, noting that some military-grade variants may have distinct regulatory statuses. Cross-reference the datasheet for exact testing conditions.

Single Zener Diodes Selection Notes

Select this component when a 28V regulation point is required in a compact surface mount form factor. Consider the 500 mW power rating to ensure adequate thermal headroom under continuous operation. Evaluate the 200 Ohm impedance for noise sensitivity in your specific application. Compare against through-hole alternatives if higher power handling or easier assembly is prioritized over board space.

Single Zener Diodes Part Context

This part belongs to the 1N4099UR through 1N4135UR series of 0.5-watt glass surface mount Zener diodes manufactured by Microchip Technology. These devices share common packaging and basic electrical characteristics while varying primarily in their nominal Zener voltage ratings. The series is engineered for high-reliability applications where consistent performance over wide temperature ranges is critical.

Single Zener Diodes Replacement Considerations

Direct substitutes include other 28V Zener diodes in the DO-213AA package with matching 500 mW power ratings and ±5% tolerance. Verify pinout compatibility and thermal resistance values before substitution. Alternative manufacturers may offer equivalent parts, but parameter deviations should be carefully assessed against the original design margins.