Infineon Technologies IDW15G120C5BFKSA1

Overview

IDW15G120C5BFKSA1 from Infineon Technologies is a 5th Generation CoolSiC™ 1200 V silicon carbide Schottky diode in a dual-anode, single-cathode TO-247-3 package. It delivers 7.5 A / 15 A continuous forward current per leg, 1.65 V typical forward voltage at 150°C, and 41 nC / 82 nC total capacitive charge - enabling high-efficiency, high-frequency power conversion in solar inverters and motor drives.

For engineers reviewing the IDW15G120C5BFKSA1 datasheet, IDW15G120C5BFKSA1 pinout, IDW15G120C5BFKSA1 application, or IDW15G120C5BFKSA1 equivalent, key selection criteria include its 1200 V blocking capability, temperature-independent switching behavior, dv/dt ruggedness of 150 V/ns, and dual-leg configuration for interleaved or phase-redundant topologies.

Technical Context

This SiC Schottky diode operates without reverse recovery charge or minority-carrier storage, eliminating switching losses associated with silicon PN diodes. Its unipolar conduction mechanism ensures stable VF across -55°C to 175°C junction temperatures and enables zero-recovery operation in hard-switched PFC and inverter freewheeling paths.

The dual-anode (Pin 1 & Pin 3), shared-cathode (Pin 2 + backside) structure supports parallel-leg current sharing without external balancing components. Thermal resistance is specified at 1.1 K/W (typ.) and 1.5 K/W (max.) per leg, supporting high-power density designs with direct case-mounting to heatsinks.

Key Specifications

Pinout & Package

Package: PG-TO247-3 (standardized JEDEC TO-247 variant with isolated leads and metal tab cathode connection). Mounting torque: 0.7 Nm for M3/M4 screws. Soldering allowed only on leads ≥1.6 mm from case.

Key Features

Applications

Equivalent & Alternatives

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

Compared with C3D15065E and STPSC15H12D, IDW15G120C5BFKSA1 uniquely integrates two independent 1200 V legs in one package - reducing PCB area by 30%, eliminating inter-leg mismatch, and enabling true single-package interleaving without external current-sharing components.

Availability

IDW15G120C5BFKSA1 is available at Aetrix Electronics and suitable for solar inverters, industrial motor drives, uninterruptible power supplies, and high-voltage power factor correction systems requiring stable component supply and long-term industrial lifecycle support.

Supply support for IDW15G120C5BFKSA1 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 semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and renewable energy markets.

IDW15G120C5BFKSA1 belongs to the CoolSiC™ 5th Generation family, engineered specifically for high-efficiency, high-reliability 1200 V power conversion in solar, UPS, and motor drive applications where thermal stability and switching robustness are critical.

FAQ

What is the maximum allowable case temperature for continuous operation?

The device supports continuous forward current up to T_C = 154°C (for 7.5 A per leg) and 135°C (for 15 A per leg), as defined by its R_th(j-c) limit and thermal derating curves. Operation beyond these case temperatures violates the maximum junction temperature of 175°C and risks permanent degradation of the Schottky barrier.

Can Pin 1 and Pin 3 be used simultaneously in parallel without external balancing?

Yes - the dual-anode structure is designed for simultaneous use with matched V_F and thermal coupling. The tight forward voltage distribution (±5%) and shared cathode minimize current imbalance; no external ballasting resistors are required for balanced steady-state or surge current sharing between legs.

Is the backside cathode electrically isolated from the package mounting surface?

No - the metal tab (backside) is the primary cathode terminal and must be electrically connected to the system ground or negative DC rail. It is not isolated; proper insulating thermal interface material (e.g., ceramic washer or silicone pad) is required when mounting to a grounded heatsink.

Does this diode require a gate resistor or snubber network?

No - as a Schottky diode, it has no gate and exhibits no reverse recovery. However, a small RC snubber (e.g., 10 Ω + 100 pF) may be used across the diode terminals in ultra-fast-switching (>100 kHz) topologies to damp high-frequency ringing caused by stray inductance and junction capacitance interaction.