IRFR2405TRPBF - 55V 56A N-Channel HEXFET MOSFET | Infineon
MPN: IRFR2405TRPBF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.18 | $11.80 |
| 100 | $0.96 | $96.00 |
| 500 | $0.82 | $410.00 |
| 1,000 | $0.69 | $690.00 |
| 2,500 | $0.61 | $1,525.00 |
Drop-in alternatives for IRFR2405TRPBF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
IRFR2405PBF
✅ Drop-In📋 Reference alternative (not in catalog)
IRFR2405TRLPBF
✅ Drop-In✓ In Stock
$0.55 / Unit
View Datasheet →AUIRFR2405
✅ Drop-In📋 Reference alternative (not in catalog)
IRFR1205TRPBF
✅ Drop-In✓ In Stock
$0.49 / Unit
View Datasheet →IRFR1018ETRPBF
✅ Drop-In✓ In Stock
$0.36 / Unit
View Datasheet →IRFR9120NTRPBF
✅ Drop-In✓ In Stock
$0.32 / Unit
View Datasheet →IRFR120NTRPBF
✅ Drop-In✓ In Stock
$0.26 / Unit
View Datasheet →IRFR5305TRPBF
✅ Drop-In✓ In Stock
$0.32 / Unit
View Datasheet →IRFR2405TRPBF Maximum Ratings & Electrical Characteristics
| Manufacturer | Infineon Technologies |
| Part Status | Active |
| FET Type | N-Channel |
| Technology | HEXFET (IR MOSFET) |
| Drain-Source Voltage (VDS) | 55 V |
| Continuous Drain Current (ID) at Tc=25C | 56 A |
| On-Resistance RDS(on) max at VGS=10V | 16 mOhm |
| Total Gate Charge (Qg) | 70 nC |
| Power Dissipation (PD) at Tc=25C | 110 W |
| Operating Junction Temperature | -55C to +175C |
| Package | TO-252AA (DPAK) |
| Mounting Type | Surface Mount |
| Pin Count | 3 (Gate, Drain, Source) + Tab |
| MSL Level | 1 |
| RoHS Status | Compliant (Lead-Free PBF suffix) |
| Avalanche Rated | Yes (100% avalanche tested) |
IRFR2405TRPBF Pin Configuration
| Pin 1 | Gate — MOSFET gate control input; drive with 10V VGS for full RDS(on) |
| Pin 2 | Source — MOSFET source terminal; connect to ground for low-side switching |
| Pin 3 | Drain — MOSFET drain terminal (also tied to thermal tab) |
| Pin Tab | Drain — Exposed thermal pad electrically connected to Drain; solder to PCB copper for heatsinking |
Safe Operating Area (DC, Tc=25C)
Typical Applications
IRFR2405TRPBF is suitable for 6 applications: Automotive 12V/24V Load Switching, DC Motor Drive / H-Bridge Switch, Synchronous Rectifier in DC-DC Buck Converter, Reverse-Battery Protection Circuit, Solenoid and Relay Driver, Power Tool and Battery-Pack Switching.
Automotive 12V/24V Load Switching
The IRFR2405TRPBF's 55 V VDS, 56 A continuous ID, and 110 W power dissipation make it ideal for automotive 12V and 24V bus load-switching applications. With RDS(on) of 16 mOhm at VGS=10V, conduction losses are minimized across high-current loads such as headlamp drivers, fuel-pump controllers, and HVAC blower motors. The DPAK package with exposed drain tab provides a robust thermal path for sustained high-current operation in under-hood environments. Its 100% avalanche-tested ruggedness also tolerates the inductive kickback produced when switching solenoids, relays, and motors on the 12V/24V automotive bus.
Recommended
DC Motor Drive / H-Bridge Switch
The IRFR2405TRPBF is well-suited as the low-side or high-side switch in DC motor H-bridge driver circuits driving brushed motors in robotics, power tools, and small EV traction. Its 56 A continuous rating handles stall-current surges typical of brushed DC motors, and its 70 nC total gate charge enables fast PWM switching above 20 kHz for smooth torque control. In H-bridge configurations, four IRFR2405TRPBF units form a complete bidirectional drive; the complementary P-channel variant IRFR5305TRPBF (also DPAK) can serve as the high-side switch with matched switching characteristics.
Recommended
Synchronous Rectifier in DC-DC Buck Converter
The IRFR2405TRPBF can serve as the synchronous rectifier (low-side switch) in buck-converter designs for 12V-to-5V/3.3V step-down conversion. Its 16 mOhm RDS(on) at 10V gate drive minimizes rectifier conduction loss, which dominates total loss at high load currents. With 70 nC gate charge and fast body-diode recovery, it supports switching frequencies from 100 kHz to 500 kHz, enabling compact inductor-based designs. In high-current point-of-load converters for industrial and automotive ECUs, it efficiently replaces Schottky diodes and reduces rectifier losses by 50% or more.
Recommended
Reverse-Battery Protection Circuit
The IRFR2405TRPBF is ideal as the high-side P-channel reverse-battery protection MOSFET replacement (using N-channel in high-side bootstrap configuration) or as the ground-side disconnect switch in automotive reverse-polarity protection modules. Its 55V VDS rating easily handles 24V jump-start transients on 12V systems, and the 16 mOhm RDS(on) keeps continuous current-path loss below 0.5W at 5A load. The TO-252AA (DPAK) package provides sufficient thermal dissipation for the moderate currents typical of body-control modules and ECU power inputs.
Recommended
Solenoid and Relay Driver
The IRFR2405TRPBF handles the high inrush and inductive flyback energy when driving solenoids, relays, and valve actuators. With 56 A pulsed current capability and 100% avalanche energy rating, it absorbs the inductive kickback that occurs when the magnetic field collapses at switch-off, eliminating the need for external freewheeling diodes in many designs. Industrial solenoid-driver modules, fuel-injector drivers, and HVAC valve controls use this MOSFET to switch 1-5A continuous loads with fast PWM control and reliable avalanche absorption up to the part's 55V VDS ceiling.
Recommended
Power Tool and Battery-Pack Switching
The IRFR2405TRPBF is widely used as the main power switch in cordless power tools and Li-ion battery-pack discharge protection circuits. Its 56 A continuous current handles the high discharge currents of 18V/20V cordless drill and impact-driver packs, while the 16 mOhm RDS(on) minimizes voltage drop across the discharge path to maximize runtime. The DPAK package's exposed thermal tab provides direct PCB heatsinking for the short-duration high-current pulses of cordless-tool motor starts and stall events. The TRPBF tape-and-reel format suits high-volume SMD production.
Recommended
Recommended Products Summary
Engineering reference data for IRFR2405TRPBF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | IRFR2405PBF | AUIRFR2405 | IRFR1205TRPBF | IRFR1018ETRPBF |
|---|---|---|---|---|---|
| Package | TO-252AA (DPAK) | TO-252AA (DPAK) - same | TO-252AA (DPAK) - same | TO-252AA (DPAK) - same | TO-252AA (DPAK) - same |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon |
| Drain-Source Voltage (VDS) | 55 V | 55 V | 55 V | 55 V | 60 V |
| Continuous Drain Current (ID) | 56 A | 56 A | 56 A | 44 A (-21%) | 56 A |
| On-Resistance RDS(on) max at VGS=10V | 16 mOhm | 16 mOhm | 16 mOhm | 27 mOhm (+69%) | 22 mOhm (+38%) |
| Total Gate Charge (Qg) | 70 nC | 70 nC | 70 nC | [DATA_NEEDED] | [DATA_NEEDED] |
| Power Dissipation (PD) | 110 W | 110 W | 110 W | [DATA_NEEDED] | [DATA_NEEDED] |
| Automotive Grade (AEC-Q101) | No | No | Yes (AEC-Q101) | No | No |
| Polarity | N-Channel | N-Channel | N-Channel | N-Channel | N-Channel |
Key Differentiators
- True drop-in tube-packaged variant available (vs IRFR2405PBF)
- Automotive-qualified sibling part in same package (vs AUIRFR2405)
- Same-package upgrade path to higher VDS (vs IRFR1018ETRPBF)
- Complementary P-Channel for H-bridge designs (vs IRFR5305TRPBF)
Design Notes
Estimated: at ID=20A with RDS(on)=16mOhm, conduction loss is roughly P=I^2*R=6.4W. DPAK's thermal resistance to a 1-square-inch copper pour on FR-4 is approximately 30-40 C/W, yielding a 192-256 C junction temperature rise above ambient - well above the 175C limit. To sustain 20A, use at least 4 square inches of drain-tab copper or add a small heatsink. For 5A applications, the same copper area keeps junction rise below 30C.
Solder the exposed drain tab directly to a continuous PCB copper pour. Use thermal vias (typically 0.3mm diameter, 0.5mm pitch) under the tab to conduct heat into inner copper layers. Place a 10kOhm gate-source resistor directly between gate and source pins to prevent parasitic turn-on from high dV/dt transients. Route the gate trace away from drain-source switching node to minimize capacitive coupling.
Do not drive the gate with less than 8V - the IRFR2405TRPBF is NOT a logic-level MOSFET and will not achieve full RDS(on) below VGS=10V. Do not exceed VGS=20V absolute maximum. Do not assume the 56A rating applies at PCB-mount - this rating requires Tc=25C (case temperature), and at TA=25C with no heatsink, derate to 15-20A maximum continuous. Do not skip the gate-source pull-down resistor or you may see sporadic turn-on from noise or ESD events.
Keep the gate-drive loop area as small as possible to minimize parasitic oscillation. Use a gate-drive resistor of 10-100 ohm in series with the gate to dampen ringing. Place input bulk capacitors close to the drain pin for switching applications. The source pin (pin 2) and source-sense connection (if used) should be Kelvin-connected to avoid adding source inductance to the gate-drive loop, which would slow switching and increase losses.
Compliance Information
RoHS compliant per 'PBF' suffix in MPN. Lead-free (Pb-free) terminations. AEC-Q101 automotive qualification available on AUIRFR2405 variant (same die). Halogen-free status not explicitly stated in verified data - consult Infineon product page for confirmation. REACH compliance per EU regulatory framework.
