Infineon Technologies IDWD20G120C5XKSA1

Overview

IDWD20G120C5XKSA1 from Infineon is a 1200 V, 20 A silicon carbide Schottky diode (CoolSiC™ G5) in PG-TO247-2-U01 package, designed for high-efficiency power conversion in high-voltage DC-link freewheeling and boost stages. It delivers 1.45–1.8 V forward voltage at 20 A (25–150 °C), zero reverse recovery charge, 150 V/ns dv/dt ruggedness, and operates up to 175 °C junction temperature - enabling use in 1500 V string inverters and industrial UPS rectifier modules.

For engineers reviewing the IDWD20G120C5XKSA1 datasheet, IDWD20G120C5XKSA1 pinout, IDWD20G120C5XKSA1 application, or IDWD20G120C5XKSA1 equivalent, key selection criteria include its 0.44 K/W junction-to-case thermal resistance, 1200 V repetitive peak reverse voltage, surge capability of 190 A (10 ms), absence of reverse recovery current, and compatibility with .XT interconnection for enhanced thermal cycling reliability.

Technical Context

This SiC Schottky diode replaces silicon fast recovery diodes in high-frequency, high-voltage switching circuits where reverse recovery losses dominate efficiency loss. Its unipolar conduction mechanism eliminates minority-carrier storage, resulting in temperature-independent switching behavior and no forward/reverse recovery spikes.

The device uses Infineon's CoolSiC™ G5 process with .XT interconnection technology - a solder-free, sintered silver die attach that reduces thermal resistance by ~20% versus standard solder and improves long-term power cycling robustness under thermal stress in EV charging and welding applications.

Key Specifications

Pinout & Package

PG-TO247-2-U01 package: isolated metal tab (cathode), single anode lead, optimized for high-current, low-inductance PCB layout with minimal parasitic loop area.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SiC Schottky diode applications.

Compared with C3D02065E-TR and UJ3D12020K, IDWD20G120C5XKSA1 offers optimal balance of 1200 V rating, 2-pin simplicity, lowest R_th(j-c), and proven .XT reliability - making it preferred for industrial-grade 1500 V systems requiring long-term thermal cycling integrity.

Availability

IDWD20G120C5XKSA1 is available at Aetrix Electronics and suitable for string inverters, industrial UPS systems, EV DC fast charging cabinets, and IGBT-based welding inverters requiring stable component supply with full traceability and extended lifecycle support.

Supply support for IDWD20G120C5XKSA1 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 AG is a German semiconductor manufacturer specializing in power semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and renewable energy markets.

IDWD20G120C5XKSA1 belongs to the CoolSiC™ Gen5 discrete SiC diode product line, engineered specifically for high-reliability, high-efficiency power conversion in 1000–1500 V DC systems where thermal robustness and zero-recovery performance are critical.

FAQ

What is the maximum recommended case temperature for continuous operation?

The datasheet specifies continuous forward current of 20 A at T_c = 153 °C, with absolute maximum junction temperature of 175 °C. For reliable long-term operation, Infineon recommends limiting T_c to ≤145 °C to maintain ≥80% of rated current and ensure >10-year field lifetime under thermal cycling stress.

Does IDWD20G120C5XKSA1 require a gate resistor or snubber circuit?

No - as a Schottky diode, it has no gate terminal and requires no gate resistor. Its 150 V/ns dv/dt ruggedness and zero reverse recovery eliminate the need for snubber circuits in most hard-switched applications, unlike silicon fast recovery diodes which typically require RC snubbers to suppress voltage overshoot.

How does .XT interconnection improve reliability compared to standard solder attach?

.XT uses sintered silver instead of Pb-free solder, achieving higher thermal conductivity (240 W/m·K vs. 50 W/m·K), lower CTE mismatch, and no void formation. This reduces interfacial delamination risk by 7× under 10,000 power cycles at ΔT = 100 K - validated per JEDEC JESD22-A104 temperature cycling standards.

Can this diode replace a silicon 1200 V fast recovery diode in an existing design?

Yes - with identical PG-TO247-2 footprint and pinout, it is a drop-in replacement. However, layout review is required: reduce snubber capacitance (if present), verify heatsink thermal interface, and confirm gate driver slew rates are compatible with faster switching edges enabled by zero recovery current.