IDH04G65C6XKSA1 - 650V SiC Schottky Diode 4A | Infineon
MPN: IDH04G65C6XKSA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.28 | $128.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.92 | $920.00 |
Drop-in alternatives for IDH04G65C6XKSA1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
IDH06G65C6XKSA1
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
IDH04G65C5XKSA1
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
STPSC406G2
β Drop-Inπ Reference alternative (not in catalog)
STPSC4H065G2
β Drop-Inπ Reference alternative (not in catalog)
FFSP0465A
β Drop-Inπ Reference alternative (not in catalog)
C4D04065A
β Drop-Inπ Reference alternative (not in catalog)
IDH04G65C6XKSA1 Maximum Ratings & Electrical Characteristics
| Diode Type | Silicon Carbide (SiC) Schottky |
| Series | CoolSiC G6 |
| Repetitive Peak Reverse Voltage (VRRM) | 650 V |
| Average Forward Current (IF(AV)) | 4 A |
| Non-Repetitive Peak Surge Current (IFSM) | 12 A (per distributor listing) |
| Forward Voltage (VF) at IF | 1.25 V (typical at rated IF) |
| Reverse Recovery Charge (Qrr) | 0 nC (SiC Schottky - no reverse recovery) |
| Junction Capacitance (Cj) | 205 pF @ 1 V, 1 MHz (per onepcba listing) |
| Operating Junction Temperature Range | -55C to +175C |
| Package / Supplier Device Package | PG-TO220-2 (through-hole) |
| Mounting Type | Through Hole |
| RoHS Status | Compliant |
| Configuration | Single Diode |
IDH04G65C6XKSA1 Pin Configuration
| Pin 1 | K (Cathode) β Cathode connection, also tied to metal tab |
| Pin 2 | A (Anode) β Anode connection |
| Pin TAB | Tab (Cathode) β Metal heatsink tab electrically connected to cathode |
Forward Current vs Case Temperature Derating
Typical Applications
IDH04G65C6XKSA1 is suitable for 6 applications: Server/Telecom PFC Rectification, EV Onboard Charger Secondary Rectification, Photovoltaic String Inverters, Industrial Welding & Plasma Power, Telecom -48 V Battery Backup Chargers, Medical Imaging Power Supplies.
Server/Telecom PFC Rectification
The IDH04G65C6XKSA1 is designed for 650 V-class bridgeless and totem-pole PFC stages in 1-3 kW server and 5G telecom rectifiers. Its 4 A average forward current and zero Qrr enable operation at 65-130 kHz switching frequencies, where silicon PiN diodes would generate severe reverse-recovery losses. At a typical 390 VDC bus and 4 A load, the 1.25 V VF translates to ~5 W of conduction loss per diode, and the 175C junction rating eliminates derating concerns in fan-cooled chassis. Compared with a silicon ultrafast rectifier, this Infineon G6 part cuts PFC-stage switching losses by 50-70%.
Recommended
EV Onboard Charger Secondary Rectification
In 6.6-22 kW EV onboard chargers, the IDH04G65C6XKSA1 serves as the secondary-side high-frequency rectifier after the isolation transformer, replacing center-tapped silicon diodes. Its 650 V rating comfortably exceeds the reflected voltage from a 400 V or 800 V traction pack, and the absence of reverse-recovery eliminates the dv/dt-induced ringing that stresses the transformer's leakage inductance. The TO-220 package bolts directly to a chassis-mount heatsink shared with the synchronous rectifiers. Switching frequency can be pushed to 200-500 kHz, shrinking magnetic components by 30-50% versus 100 kHz silicon designs.
Recommended
Photovoltaic String Inverters
The IDH04G65C6XKSA1 is used in the boost stage and DC-side clamping of 1.5-10 kW residential and small-commercial photovoltaic string inverters. Its 175C junction rating supports outdoor enclosure operation up to 70C ambient without forced airflow, and the G6 MPS structure tolerates the high dv/dt of 50 kHz hard-switched boost topologies without reliability concerns. The 4 A rating suits single-string 12-15 A applications when paired with a small heatsink. Compared with silicon PiN diodes, the Infineon part reduces boost-stage losses by 60% and eliminates audible noise from reverse recovery.
Industrial Welding & Plasma Power
In high-frequency inverter welding (HF TIG) and plasma-cut power supplies, the IDH04G65C6XKSA1 serves as the freewheeling and snubber-recovery diode in IGBT bridge legs. With welding arcs presenting 30-40 kHz of hard switching and high dv/dt transients, the G6 SiC Schottky's zero Qrr prevents the voltage overshoot and shoot-through failures that plague silicon ultrafast diodes. Its 12 A surge current rating handles the welding strike transient, and the PG-TO220-2 footprint mounts to the same aluminum heatsink plate as the IGBTs.
Telecom -48 V Battery Backup Chargers
The IDH04G65C6XKSA1 is deployed in the boost-PFC front end of -48 V rectifier modules for telecom backup systems, where high efficiency at partial load is critical to minimize cooling cost in sealed outdoor cabinets. The 4 A rating fits 1U rectifier modules at 1500 W output, and the absence of reverse-recovery losses enables CCM operation at 100 kHz with hard-switched Si MOSFETs. At typical 50% load efficiency targets (>96%), the SiC PFC diode contributes only 1.5-2 W versus 6-8 W for a silicon equivalent.
Medical Imaging Power Supplies
In CT scanner gantry power supplies and MRI gradient amplifiers, the IDH04G65C6XKSA1 forms part of low-noise rectification stages where EMI from reverse-recovery would interfere with sensitive imaging electronics. The G6 SiC Schottky's clean switching waveform reduces common-mode emissions by 10-15 dB versus PiN rectifiers, simplifying EMI filter design. Its 175C rating supports compact fan-less operation in the gantry's restricted airflow environment, and the standard TO-220 footprint allows easy heatsink integration alongside SiC MOSFETs.
Recommended Products Summary
Engineering reference data for IDH04G65C6XKSA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | IDH06G65C6XKSA1 | STPSC406G2 | STPSC4H065G2 | FFSP0465A | C4D04065A |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | STMicroelectronics | STMicroelectronics | onsemi | Wolfspeed/Cree |
| Package | PG-TO220-2 (TH) | PG-TO220-2 (TH) - same | TO-220 - same | TO-220 - same | TO-220 - same | TO-220 - same |
| VRRM (V) | 650 | 650 | 650 | 650 | 650 | 650 |
| IF(AV) (A) | 4 | 6 | 4 | 4 | 4 | 4 |
| VF @ IF (V) | 1.25 | 1.25 | 1.35 | 1.35 | 1.45 | 1.5 |
| TJ Max (C) | 175 | 175 | 175 | 175 | 175 | 175 |
| Generation / Family | CoolSiC G6 | CoolSiC G6 | ST G2 | ST G2 | onsemi SiC | Z-Rec Gen 3 |
| Reverse Recovery | Zero (SiC Schottky) | Zero (SiC Schottky) | Zero (SiC Schottky) | Zero (SiC Schottky) | Zero (SiC Schottky) | Zero (SiC Schottky) |
Key Differentiators
- Lowest VF in class for 650 V/4 A SiC Schottky (vs STPSC406G2)
- CoolSiC G6 merged-PN junction structure (vs FFSP0465A)
- Wide -55C to +175C junction temperature range (vs C4D04065A)
Design Notes
Estimated: at IF=4 A and VF=1.25 V, conduction loss is ~5 W per diode. The PG-TO220-2 package has a typical theta_JC of 1.5 C/W, so junction temperature rise above case is 7-8 C at full rated current - negligible. With a modest clip-on heatsink of 10 C/W theta_SA, total thermal resistance from junction to ambient is ~12 C/W, supporting 4 A continuous at 100C ambient. Above 135C ambient, derate IF linearly to zero at 175C per the manufacturer's SOA curve.
Minimize the loop inductance between the IDH04G65C6XKSA1 cathode and the active switch (MOSFET/IGBT) to limit voltage overshoot during turn-off. Although the G6 MPS structure tolerates high dv/dt (typically 50-100 kV/us), placing the diode within 10 mm of the switch and using a low-inductance ground return prevents unintended ringing above 750 V. For high-frequency switching (>100 kHz), add a small RC snubber (10 ohm + 470 pF) across the diode.
Do not exceed VRRM=650 V under any condition, including transient ringing. Although the G6 part is rugged, avalanche operation is not specified and can degrade leakage current. Always measure peak reverse voltage on the prototype with a high-bandwidth probe (>200 MHz). Also avoid exceeding IFSM=12 A surge rating, which is a single-cycle non-repetitive rating for cold-start inrush.
Compliance Information
RoHS/REACH compliance per Infineon product page. Not AEC-Q100 qualified - this is the industrial-grade IDH04G65C6 variant, not the automotive-grade IDH04G65C6FKSA1-A variant. Halogen-free status not explicitly stated in the verified web data.
