Infineon Technologies SDD04S60

Overview

SDD04S60 from Infineon Technologies is a silicon carbide (SiC) Schottky diode rated for 600 V repetitive peak reverse voltage, 4 A continuous forward current at T_C = 100 °C, and 13 nC total capacitive charge at T_j = 150 °C; it features zero reverse recovery, temperature-independent switching, and is optimized for high-efficiency PFC stages in 800 W AC-DC power supplies.

For engineers reviewing the SDD04S60 datasheet, SDD04S60 pinout, SDD04S60 application, or SDD04S60 equivalent, key selection criteria include its SiC-based zero-Q_rr behavior, low C_oss (7 pF at 600 V), thermal robustness to 175 °C junction temperature, and TO-252-3 (DPAK) surface-mount package suitability for high-density PFC and SMPS designs.

Technical Context

This SiC Schottky diode replaces conventional silicon fast recovery diodes in high-frequency, high-efficiency rectification circuits. Its unipolar conduction mechanism eliminates minority-carrier storage, resulting in no reverse recovery charge (Q_rr = 0) and negligible dependence of switching loss on junction temperature.

The device operates with a typical forward voltage of 1.9 V at 4 A and 25 °C, rising only to 2.4 V at 150 °C - confirming stable conduction across industrial temperature range. Reverse leakage remains below 1000 µA at 600 V and 150 °C, supporting reliable operation in thermally stressed PFC boost stages.

Key Specifications

Pinout & Package

Packaged in PG-TO252-3 (DPAK), the SDD04S60 uses a surface-mount outline with exposed drain pad for thermal enhancement. Pin 1 = Anode (A), Pin 2 = Cathode (C), Pin 3 = Not connected (n.c.). The cathode is electrically tied to the exposed metal tab for low-inductance return path.

Key Features

Applications

Equivalent & Alternatives

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

Compared with C3D04060E and STPSC406D, the SDD04S60 offers balanced trade-offs: mid-range V_F, industry-leading Q_c/C_oss stability, and proven thermal interface compatibility with standard FR4 DPAK layouts - making it optimal for cost-sensitive, high-volume PFC designs requiring design-in longevity.

Availability

SDD04S60 is available at Aetrix Electronics and suitable for server power supplies, industrial motor drives, solar microinverters, and EV onboard chargers requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for SDD04S60 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 security solutions, with leadership in SiC and GaN power devices.

The thinQ!® SiC Schottky diode product line targets high-efficiency, high-power-density AC-DC conversion systems - specifically engineered to replace silicon diodes in PFC, solar inverters, and EV charging where zero Q_rr and thermal resilience are mandatory.

FAQ

Is SDD04S60 suitable for synchronous rectification in LLC resonant converters?

No - the SDD04S60 is a unidirectional Schottky diode and lacks gate control. It functions only as a passive rectifier. For synchronous rectification, discrete MOSFETs or integrated SR controllers (e.g., Infineon's IRS1168) must be used in conjunction with this diode's forward path characteristics for validation.

What is the maximum recommended PCB copper area for thermal performance in SDD04S60 designs?

The datasheet specifies optimal thermal performance with a 6 cm² copper area (single-layer, 70 µm thick) on FR4 PCB. This achieves R_thJA = 50 K/W. Reducing copper area below 4 cm² increases R_thJA nonlinearly; below 2 cm², derating of I_F by ≥30% is required to maintain T_j ≤ 150 °C.

Does SDD04S60 require a gate resistor or snubber network?

No - as a Schottky diode, it has no gate terminal and does not require gate resistors. However, a small RC snubber (e.g., 10 Ω + 100 pF) across anode-cathode is recommended in high-dI/dt PFC applications (>300 A/µs) to damp ringing caused by stray inductance interacting with its 7 pF C_oss.

Can SDD04S60 be paralleled for higher current handling?

Yes - but only with matched V_F bins (±0.05 V) and symmetrical PCB layout (identical trace length, width, and thermal vias). Parallel operation increases total I_F linearly only if thermal coupling between devices is uniform; mismatched heating causes current hogging and premature failure above 2× rating.