LQA12B300C

Diode Arrays Overview

The LQA12B300C is a Qspeed™ family common-cathode diode rated for 300 V peak repetitive reverse voltage and 12 A average forward current per device. It features low reverse recovery charge (QRR) of 27 nC at 125 °C and low reverse recovery current (IRRM) of 1.87 A. The component utilizes TO-263AB surface-mount packaging, operates within a junction temperature range of -55 °C to 150 °C, and supports high dI/dt switching capabilities up to 1000 A/µs.

Diode Arrays Feature Summary

• Low reverse recovery charge and current characteristics
• Soft recovery behavior with a softness factor of 0.7
• High dI/dt capability enabling extremely fast switching

Diode Arrays Applications

• AC/DC and DC/DC output rectification
• Output and freewheeling diodes in power circuits
• Motor drive circuits
• DC-AC inverters

Diode Arrays Procurement Notes

Verify the specific package type matches the application requirements, as the LQA12B300C uses TO-263AB surface-mount packaging. Confirm that the thermal management design accommodates the specified junction-to-case thermal resistance values. Ensure the operating conditions remain within the absolute maximum ratings defined in the datasheet to maintain device reliability and performance standards.

Diode Arrays Selection Notes

Select this component when minimizing snubber circuit complexity is required due to its soft recovery profile. Consider the TO-263AB package for surface-mount assembly needs. Evaluate the thermal derating curves to ensure adequate heat dissipation under continuous load conditions. Verify compatibility with high-frequency switching applications requiring low reverse recovery losses.

Diode Arrays Part Context

This part belongs to the Qspeed™ family of silicon diodes from Power Integrations. It shares the core technology with the LQA12T300C but differs in physical packaging. The series is designed to offer the lowest reverse recovery charge among comparable 300 V silicon diodes, targeting efficiency improvements in power conversion systems.

Diode Arrays Replacement Considerations

The LQA12T300C serves as a pin-compatible alternative utilizing TO-220AB through-hole packaging. Direct substitution requires verifying mechanical mounting constraints and thermal interface compatibility between the surface-mount and through-hole variants.

Diode Arrays FAQ

What is the typical reverse recovery charge (QRR) at 125 °C?

The typical reverse recovery charge is 27 nC at a junction temperature of 125 °C.

Does the LQA12B300C require external snubber circuits?

The device's soft recovery characteristics are designed to eliminate the need for snubber circuits in many applications.

What is the maximum non-repetitive peak surge current per diode?

The maximum non-repetitive peak surge current per diode is 350 A for a half-cycle sinusoid at TC = 25 °C.