IRFP4768PBF - 250V 93A N-Channel MOSFET TO-247AC | Infineon
MPN: IRFP4768PBF β Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.41 | $12.41 |
| 10 | $11.28 | $112.80 |
| 25 | $10.86 | $271.50 |
| 100 | $10.1 | $1,010.00 |
| 500 | $9.42 | $4,710.00 |
| 1,000 | $8.85 | $8,850.00 |
Drop-in alternatives for IRFP4768PBF 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:
IRFP4868PBFXKMA1
β Drop-Inπ Reference alternative (not in catalog)
IRFP4768
β Drop-Inπ Reference alternative (not in catalog)
IRFP4227PBF
β‘ Same Packageπ Reference alternative (not in catalog)
IRFP4568PBF
β‘ Same Package β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
VBGP1252N
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
IRFP4768PBF Maximum Ratings & Electrical Characteristics
| Polarity | N-Channel |
| Drain-to-Source Breakdown Voltage (VDSS) | 250 V |
| Continuous Drain Current (ID) at Tc=25C | 93 A |
| RDS(on) Max | 17.5 mOhm |
| Power Dissipation (PD) at Tc=25C | 520 W |
| Gate-to-Source Voltage Max (VGS) | +/-20 V |
| Total Gate Charge (Qg) | 180 nC |
| Gate Threshold Voltage (Vth) | 5 V |
| Thermal Resistance Junction-to-Case | 0.24 C/W |
| Package | TO-247AC |
| Mounting Type | Through Hole |
| Technology | IR MOSFET (HEXFET) |
| Avalanche Ruggedness | Improved gate, avalanche and dynamic dV/dt ruggedness |
| Body Diode | Enhanced dV/dt and di/dt capability |
| Configuration | Single MOSFET |
| RoHS Status | Compliant (PbF) |
| Lead Status | Lead-free |
IRFP4768PBF Pin Configuration
| Pin 1 | Gate β Gate terminal - drive with 10-12V for full enhancement; abs max +/-20V |
| Pin 2 | Drain β Drain terminal, also connected to the metal mounting tab |
| Pin 3 | Source β Source terminal; body diode from source to drain |
Safe Operating Area (DC)
Typical Applications
IRFP4768PBF is suitable for 6 applications: Synchronous Rectification in SMPS, Uninterruptible Power Supply (UPS), Motor Drives and Inverters, Power Factor Correction (PFC), DC-DC Converters, Welding Equipment.
Synchronous Rectification in SMPS
The IRFP4768PBF fits high-efficiency SMPS synchronous rectification because its 17.5 mOhm RDS(on) cuts conduction loss at high output current, and its enhanced body diode with improved dV/dt and di/dt ruggedness absorbs reverse-recovery stress in buck-derived topologies. Placed as the rectifier element replacing a Schottky diode, it operates at 10-12V gate drive for full enhancement, with 180 nC gate charge setting the driver current requirement. Compared with diode rectification, this typically improves converter efficiency by several percentage points at 48V-output server and telecom power levels.
Recommended
Uninterruptible Power Supply (UPS)
In UPS output stages and battery converters, the IRFP4768PBF provides 250V VDSS for bus margin and 93A continuous current for inverter output stages. The improved avalanche and dynamic dV/dt ruggedness helps it survive inductive-load switching transients typical of line-interactive and double-conversion UPS designs. Mounted on a heatsink via the TO-247AC tab with 0.24 C/W junction-to-case thermal resistance, it handles the 520W dissipation envelope at Tc=25C, enabling compact high-power inverter bridges.
Recommended
Motor Drives and Inverters
The IRFP4768PBF serves DC bus voltages up to 250V in industrial motor drives and inverters, where its 93A rating and 17.5 mOhm RDS(on) minimize loss during heavy-load operation. The fully characterized avalanche SOA supports hard-switched PWM bridges, and the enhanced body diode handles freewheeling current in half-bridge configurations. A gate resistor of 4.7 to 22 Ohm controls switching speed and EMI. Per VBsemi application guidance, the domestic alternative VBGP1252N offers 16 mOhm and 100A for higher-efficiency, higher-density drive designs.
Recommended
Power Factor Correction (PFC)
In boost-PFC front ends of industrial power supplies, the IRFP4768PBF operates from rectified mains up to approximately 400V bus where the 250V class suits half-bridge and lower-bus PFC stages or stage-1 converters on 200V-class systems. Its 180 nC gate charge enables switching at 50-150 kHz with a strong driver, while low RDS(on) limits conduction loss at peak inductor current. The improved gate and avalanche ruggedness, per Infineon datasheet PD-97379, supports the hard-switched turn-off events inherent to boost PFC under line-transient conditions.
Recommended
DC-DC Converters
High-current isolated and non-isolated DC-DC converters use the IRFP4768PBF as the primary switching element where 250V standoff covers off-line-derived intermediate bus architectures. The 17.5 mOhm RDS(on) minimizes loss in full-bridge and push-pull primaries, and the fast body diode reduces dead-time losses. Because it is a through-hole TO-247AC device, prototyping is straightforward and thermal interfaces are easily serviced. Designers should verify 10-12V gate drive to hold RDS(on) at its specified maximum under all load and temperature conditions.
Recommended
Welding Equipment
Inverter-based welding power sources demand high peak current and rugged switching devices; the IRFP4768PBF delivers 93A continuous rating, 520W dissipation capability, and improved avalanche energy ruggedness suited to arc-load transients. The fully characterized avalanche SOA in the Infineon datasheet lets designers validate clamp-less operation margins. Paralleling multiple TO-247AC devices is common for output rectification and primary bridges; layout symmetry and individual gate resistors prevent current-hogging. The through-hole package simplifies field service in industrial welding environments.
Recommended
Recommended Products Summary
Engineering reference data for IRFP4768PBF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | IRFP4868PBFXKMA1 | IRFP4768 | IRFP4227PBF | VBGP1252N |
|---|---|---|---|---|---|
| Package | TO-247AC | TO-247AC - same | TO-247AC - same | TO-247AC - same | TO-247-3 - compatible |
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Will Semiconductor |
| VDSS | 250 V | 250 V (verify new datasheet) | 250 V | 200 V | 250 V |
| Continuous Drain Current | 93 A (Tc) | [DATA_NEEDED] | 93 A (Tc) | 71 A (Tc) | 100 A |
| RDS(on) Max | 17.5 mOhm | [DATA_NEEDED] | 17.5 mOhm | [DATA_NEEDED] | 16 mOhm |
| Total Gate Charge | 180 nC | [DATA_NEEDED] | 180 nC | [DATA_NEEDED] | [DATA_NEEDED] |
| RoHS / Lead-Free | Yes (PbF) | Yes | No (non-PbF) | Yes (PbF) | Yes |
| Lifecycle Status | Discontinued (PD_358_25, last time buy) | Active (recommended replacement) | [DATA_NEEDED] | [DATA_NEEDED] | Active |
Key Differentiators
- Low conduction loss at 250V class (vs IRFP4227PBF)
- Improved ruggedness features (vs IRFP4768 (non-PbF))
- Domestic alternative with higher ratings (vs VBGP1252N)
Design Notes
The IRFP4768PBF is rated 520W at Tc=25C, but that assumes an ideal infinite heatsink. Real designs must budget the case-to-ambient path: with 0.24 C/W junction-to-case, a 30W dissipation raises the junction only about 7C above the case, so heatsink selection dominates. Use thermal grease or a phase-change pad on the TO-247AC tab and verify case temperature under worst-case load; keep junction below 150C with margin.
Drive the gate with 10-12V to fully enhance the channel and achieve the 17.5 mOhm RDS(on) maximum. At 180 nC total gate charge, driver peak current sets switching time: a 2A driver switches in roughly 90 ns. Use a gate resistor (typically 4.7 to 22 Ohm) to damp ringing and control EMI; split resistors for turn-on/turn-off can independently optimize efficiency and spike suppression.
The part is being discontinued under Infineon notice PD_358_25 with IRFP4868PBFXKMA1 as the recommended replacement. Do not start new designs on IRFP4768PBF without a second-source plan. Also note IRFP4768 (non-PbF) is not RoHS-compliant for new products. Verify the replacement datasheet values for VDSS, RDS(on), and gate charge before releasing the BOM change.
Compliance Information
PbF suffix denotes lead-free, RoHS-compliant terminal finish. Not an automotive AEC-Q100 part. REACH/halogen status not stated in provided data.
