MKP3V120G

Overview

The MKP3V120G is a SIDAC device manufactured by onsemi, designed for overvoltage protection applications. It features a breakdown voltage of 250 V and supports a continuous current rating of 1 A RMS. The component utilizes a lead-free plastic construction housed in the CASE 267-03 package, which is a two-pin axial configuration. This device operates as a bidirectional trigger diode, providing reliable circuit protection against transient voltage spikes within specified industrial and commercial electronic systems.

Feature Summary

• Bidirectional triggering capability for AC line protection
• Lead-free plastic encapsulation for environmental compliance
• Axial through-hole mounting configuration

Applications

• Overvoltage protection for AC mains inputs
• Surge suppression in telecommunication equipment
• Protection circuits for consumer electronics power supplies

Procurement Notes

Verify the specific suffix 'G' indicates lead-free compliance and RoHS certification status according to the manufacturer's latest documentation. Confirm the CASE 267-03 package dimensions match the target PCB layout requirements. Ensure the 250 V breakdown voltage aligns with the system's maximum operating voltage limits to prevent unintended triggering during normal operation.

Selection Notes

Select this component when a bidirectional overvoltage protector is required for AC circuits. The 1 A RMS current rating must be sufficient for the expected surge currents in the application. Consider the thermal dissipation capabilities inherent to the plastic axial package if high-frequency switching or repeated surge events are anticipated in the design environment.

Part Context

This part belongs to the SIDAC family of overvoltage protection devices from onsemi. These components function similarly to DIACs but are optimized for higher energy absorption and robustness in line protection scenarios. The MKP3V120G represents a standard offering for protecting low-power AC interfaces against transient overvoltages.

Replacement Considerations

Cross-reference with Littelfuse SIDAC variants such as those in the SLC series or equivalent Motorola/NXP SIDAC parts listed in historical databases. Verify that any substitute matches the 250 V breakdown voltage, 1 A RMS current rating, and axial package form factor to ensure mechanical and electrical compatibility.

FAQ

Is the MKP3V120G a unidirectional or bidirectional device?

The MKP3V120G is a bidirectional SIDAC, meaning it can trigger and conduct current in both polarities, making it suitable for AC line protection.

What is the maximum continuous current rating for this component?

The component has a maximum continuous current rating of 1 A RMS, as specified in its technical parameters.

Does the 'G' suffix indicate a specific package variation?

Yes, the 'G' suffix typically denotes lead-free packaging and compliance with RoHS standards, housed in the CASE 267-03 axial plastic package.