Microchip Technology APT30D60SG/TR

Overview

APT30D60SG/TR from Advanced Power Technology is an ultrafast soft recovery rectifier diode rated for 600 V reverse voltage and 30 A average forward current in TO-247 package, featuring 1.8 V typical forward voltage at 30 A, 35 ns reverse recovery time at 25°C, and low leakage (250 µA max) - used as anti-parallel diode in switchmode power supplies and motor inverters.

For engineers reviewing the APT30D60SG/TR datasheet, APT30D60SG/TR pinout, APT30D60SG/TR application, or APT30D60SG/TR equivalent, key selection criteria include soft recovery behavior, thermal resistance of 0.67 °C/W (junction-to-case), RoHS-compliant e3 terminal finish, and suitability for high-frequency PFC and snubber circuits requiring low noise switching and cooler operation.

Technical Context

This diode employs a soft-recovery silicon epitaxial structure optimized for minimal reverse recovery overshoot and reduced EMI generation during commutation. Its dynamic performance is characterized by controlled di/dt dependence: trr = 35 ns (IF = 30 A, diF/dt = –200 A/µs, VR = 400 V, TC = 25°C) and Qrr = 200 nC under same conditions.

Thermal design is supported by a low RθJC of 0.67 °C/W and maximum junction temperature of 175°C. The device operates with soft recovery across temperature range –55°C to +175°C and maintains low leakage (<500 µA at 125°C), enabling stable performance in industrial motor controllers and high-density converters.

Key Specifications

Pinout & Package

APT30D60SG/TR is housed in a TO-247 package with isolated metal tab (cathode). The case serves as the cathode terminal and must be electrically insulated from heatsink unless system grounding scheme permits common-cathode connection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast soft recovery diode applications.

Compared with STTH30L06TV1 and IXYS MUR3060CT, APT30D60SG/TR delivers optimal balance of soft recovery (low EMI), RoHS compliance, and thermal efficiency - making it preferred for high-reliability industrial inverters and compact PFC modules where leakage, temperature margin, and regulatory compliance are jointly critical.

Availability

APT30D60SG/TR is available at Aetrix Electronics and suitable for switchmode power supplies, motor inverters, and PFC boost stages requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for APT30D60SG/TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Advanced Power Technology (acquired by Microsemi, now part of Microchip Technology) specialized in high-performance power semiconductors including ultrafast diodes, IGBTs, and MOSFETs for industrial and aerospace applications.

The APT30D60SG/TR belongs to the APT Ultrafast Soft Recovery Diode family, engineered specifically for high-frequency, low-noise switching in motor drives, renewable energy inverters, and high-efficiency SMPS where EMI reduction and thermal robustness are essential.

FAQ

What is the maximum junction temperature rating for APT30D60SG/TR?

The APT30D60SG/TR has a maximum junction temperature rating of 175°C, verified per its Absolute Maximum Ratings table. This allows reliable operation in high-ambient environments such as enclosed industrial drives or solar inverters. Derating curves in Figure 7 confirm 30 A average current is maintainable up to TC = 140°C, provided thermal interface resistance remains within specification. APT30D60SG/TR must not exceed this limit during transient or steady-state conditions.

Is APT30D60SG/TR pin-compatible with APT30D60B/TR?

Yes, APT30D60SG/TR and APT30D60B/TR share identical TO-247 mechanical outline, pin assignment (Lead 1 = Cathode, Lead 2 = Anode), and thermal pad configuration. The "G" suffix denotes RoHS-compliant e3 terminal finish (100% Sn), while APT30D60B/TR uses traditional Pb/Sn plating. Electrical specifications are identical; only the plating differs - no PCB or layout changes are needed for migration.

What does "soft recovery" mean for APT30D60SG/TR, and how is it measured?

"Soft recovery" in APT30D60SG/TR refers to a controlled reverse recovery waveform with minimal current tail and low di/dt-induced voltage overshoot. It is quantified by measuring trr and IRRM using the circuit in Figure 9: IF = 30 A, diF/dt = –200 A/µs, VR = 400 V, TC = 25°C. APT30D60SG/TR achieves trr = 35 ns and IRRM ≤ 12 A, with <0.25×IRRM tail current - directly reducing EMI and snubber stress compared to hard-recovery diodes.

Can APT30D60SG/TR be used in surface-mount designs?

No, APT30D60SG/TR is specified only in TO-247 through-hole package per datasheet revision H. While the APT30D60S(G) variant exists in D3PAK surface-mount package, APT30D60SG/TR explicitly references the TO-247 outline in all mechanical drawings and thermal data. Using it in SMT reflow would violate mounting torque, lead form, and thermal interface requirements - select APT30D60SG-ND (D3PAK) instead for surface-mount applications.

What is the thermal resistance from junction to case (RθJC) for APT30D60SG/TR?

The junction-to-case thermal resistance (RθJC) for APT30D60SG/TR is 0.67 °C/W (typical), as stated in the Thermal and Mechanical Characteristics table. This value assumes proper mounting with recommended torque (5.9 lb·in / 0.67 N·m) and thermal interface material. It enables accurate junction temperature prediction using TJ = TC + (PDM × RθJC), where PDM is the instantaneous power dissipation - critical for reliability validation in high-power inverters.