APT60D20LCTG

Overview

The APT60D20LCTG is a dual ultrafast soft recovery rectifier diode manufactured by Microsemi Corporation. It features a common cathode configuration with two independent elements housed in a TO-264 package. The device supports a maximum DC reverse voltage of 200V and provides an average forward current of 60A per leg at a case temperature of 144°C. Key electrical characteristics include a typical forward voltage of 1.3V at 60A, a maximum reverse leakage current of 500µA at 125°C, and a junction capacitance of 210pF at 200V. Dynamic performance includes a reverse recovery time of 30ns and a reverse recovery charge of 30nC under standard test conditions.

Feature Summary

• Ultrafast recovery times combined with soft recovery characteristics to minimize switching noise.
• Low forward voltage drop for reduced conduction losses and cooler operation.
• Low leakage current and low junction capacitance for improved high-frequency efficiency.
• Robust thermal design utilizing the popular TO-264 package for high power density.

Applications

• Anti-parallel diodes in switchmode power supplies and inverters
• Free wheeling diodes in motor controllers, converters, and inverters
• Snubber diodes in high-speed switching circuits
• Power factor correction (PFC) stages

Procurement Notes

Verify RoHS compliance status by checking the specific ordering suffix, as 'G' denotes lead-free terminals. Confirm the required thermal management strategy, noting the junction-to-case thermal resistance is 0.34°C/W. Ensure the mounting torque does not exceed 5.9 lb•in (0.67 N•m) to prevent mechanical damage. Validate that the operating junction temperature remains within the -55°C to 175°C range during system integration.

Selection Notes

Select this component for applications requiring high efficiency and low electromagnetic interference due to its soft recovery profile. The dual common cathode configuration simplifies circuit layout for bridge or center-tap topologies. Consider the 600A non-repetitive surge current capability for robust protection against transient overloads. Evaluate the thermal impedance curves to ensure adequate heat sinking for the intended duty cycle and ambient conditions.

Part Context

This part belongs to the APT series of ultrafast soft recovery rectifiers from Microsemi. It is designed for high-power, high-frequency applications where switching losses and noise are critical constraints. The TO-264 package offers a balance between high current handling and compact footprint compared to larger module formats.

Replacement Considerations

Direct substitutes must match the 200V rating, 60A per leg current capacity, and TO-264 package. Verify dynamic parameters like trr and Qrr to ensure compatibility with existing snubber designs. Check if alternative parts offer similar soft recovery characteristics to maintain EMI performance.

FAQ

What is the maximum non-repetitive forward surge current?

The maximum non-repetitive forward surge current is 600A, measured at a junction temperature of 45°C with an 8.3ms pulse duration.

How is the junction capacitance defined?

The junction capacitance is specified as 210pF maximum, measured at a reverse voltage of 200V.

What is the recommended maximum mounting torque?

The maximum mounting torque is 5.9 lb•in (0.67 N•m).