Infineon Technologies IDW80C65D1XKSA1

Overview

IDW80C65D1XKSA1 from Infineon Technologies is a dual-anode, common-cathode emitter-controlled diode (ECD) optimized for high-frequency switching in industrial power converters. It delivers 650 V reverse blocking, 2 × 40 A DC forward current per leg at TC = 25°C, 1.35 V forward voltage at 40 A and 25°C, ultra-fast 77 ns reverse recovery time, and operates up to 175°C junction temperature - enabling use as boost diodes in PFC stages and freewheeling diodes in motor inverters.

For engineers reviewing the IDW80C65D1XKSA1 datasheet, IDW80C65D1XKSA1 pinout, IDW80C65D1XKSA1 application, or IDW80C65D1XKSA1 equivalent, key selection criteria include its dual-leg common-cathode TO-247 package, low Qrr (0.87 µC), temperature-stable VF, and JEDEC-qualified reliability for industrial power control systems.

Technical Context

This emitter-controlled diode uses Infineon's proprietary ECD technology to achieve simultaneous low conduction loss and fast, soft recovery - eliminating minority-carrier tail current without requiring snubbers. Its internal emitter inductance is tightly controlled at 13.0 nH, minimizing voltage overshoot during turn-off under high di/dt conditions.

The device features two independent anode terminals (A1, A2) sharing one cathode (C), enabling phase-interleaved or redundant configurations in three-phase PFC or dual-channel inverter legs. Thermal resistance Rth(j–c) is 0.84 K/W per leg, supporting high-power density designs with direct heatsink mounting via the backside cathode.

Key Specifications

Pinout & Package

Package: PG-TO247-3 (standard TO-247 outline with isolated leads and electrically active backside cathode). Mounting via M3 screw (0.6 Nm torque); backside serves as primary cathode terminal and thermal path.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar emitter-controlled diode applications.

Compared with IDW80C65D1XKSA1, the D2 variant offers identical performance with relaxed storage spec, while STTH806DIP trades significant conduction and switching loss for lower unit cost - making it viable only in thermally forgiving, low-switching-frequency applications.

Availability

IDW80C65D1XKSA1 is available at Aetrix Electronics and suitable for industrial power control, solar string inverters, and high-density telecom rectifiers requiring stable component supply, long-term lifecycle support, and JEDEC-qualified reliability.

Supply support for IDW80C65D1XKSA1 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs and discrete devices, with global manufacturing and quality certification to ISO 9001 and IATF 16949.

IDW80C65D1XKSA1 belongs to Infineon's Emitter Controlled Diode (ECD) product line, engineered specifically for high-efficiency, high-reliability industrial power conversion where low Qrr, soft recovery, and 175°C operation are mandatory.

FAQ

What is the maximum continuous forward current per anode leg at 100°C case temperature?

At TC = 100°C, the maximum continuous forward current per leg is 40.0 A, as specified in the "Maximum Ratings" table of the Rev. 2.1 datasheet. This rating assumes proper heatsinking and adherence to the 0.84 K/W thermal resistance limit per leg, with junction temperature held at or below 175°C.

Can IDW80C65D1XKSA1 replace standard ultrafast diodes in existing PFC designs without layout changes?

Yes - its PG-TO247-3 footprint and pinout (A1–C–A2) match legacy TO-247 diodes. However, due to lower VF and faster trr, gate drive timing of paired switches may require minor adjustment to avoid shoot-through, and snubber components can often be removed or downsized.

Is the backside cathode electrically isolated from the metal tab in the TO-247 package?

No - the backside is the primary cathode terminal (C) and is electrically connected to Pin 2. It must be mounted to a grounded or common-cathode heatsink; isolation requires insulating hardware and thermal interface materials rated for ≥650 V working voltage.

Does this device require a gate resistor or external control signal like a MOSFET?

No - IDW80C65D1XKSA1 is a passive two-terminal diode. The "emitter-controlled" designation refers to its internal silicon structure (a patented carrier lifetime control technique), not external gate control. It operates autonomously like any diode, with no bias or drive circuitry needed.