IRLR2908TRPBF - 80V N-Ch HEXFET MOSFET, 30A, DPAK | Infineon
MPN: IRLR2908TRPBF β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.99 | $0.99 |
| 10 | $0.89 | $8.90 |
| 100 | $0.79 | $79.00 |
| 500 | $0.69 | $345.00 |
| 1,000 | $0.62 | $620.00 |
| 3,000 | $0.55 | $1,650.00 |
Drop-in alternatives for IRLR2908TRPBF 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:
AUIRLR2908TRL
β Drop-Inπ Reference alternative (not in catalog)
IRLR2908TRLPBF
β Drop-Inπ Reference alternative (not in catalog)
IRLR2908PBF
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
IRLB4030PBF
β Drop-Inβ In Stock
$3.1 / Unit
View Datasheet βVBE1104N
β Drop-Inπ Reference alternative (not in catalog)
IRLR3114ZTRPBF
β Drop-Inβ In Stock
$0.46 / Unit
View Datasheet βIRLR2908TRPBF Maximum Ratings & Electrical Characteristics
| Transistor Type | N-Channel MOSFET |
| Technology | HEXFET (IR MOSFET) |
| Drain-Source Voltage (Vds) | 80 V |
| Continuous Drain Current (Id) at Tc=25C | 30 A |
| On-Resistance RDS(on) max @ Vgs=10V | 28 mOhm |
| On-Resistance RDS(on) typ @ Vgs=10V | 22.5 mOhm |
| Gate Charge (Qg) typ | 22 nC |
| Power Dissipation (Pd) at Tc=25C | 120 W |
| Operating Junction Temperature | -55C to +175C |
| Package | TO-252AA (DPAK), surface mount |
| Mounting Type | Surface Mount |
| Configuration | Single with built-in diode |
| Lead-Free / RoHS | Yes (PBF suffix indicates lead-free) |
IRLR2908TRPBF Pin Configuration
| Pin 1 | Gate β MOSFET gate control input |
| Pin 2 | Drain β MOSFET drain (connected internally to metal tab) |
| Pin 3 | Source β MOSFET source reference |
| Pin Tab | Drain β Drain tab (electrically tied to pin 2); solder to copper pour for thermal dissipation |
Safe Operating Area (DC, Tc=25C)
Typical Applications
IRLR2908TRPBF is suitable for 6 applications: DC-DC Buck Converter (12V to 3.3V/5V), Automotive 12V/24V Load Switch, Brushless DC Motor Drive (3-Phase Inverter), Solenoid and Relay Driver, LED Lighting Driver (High-Brightness), Battery Protection and Hot-Swap Controller.
DC-DC Buck Converter (12V to 3.3V/5V)
The IRLR2908TRPBF serves as the low-side synchronous-rectifier or high-side control switch in 12V-input buck converters. Its 80V Vds rating easily handles the 12V rail plus transient ringing, while 22.5 mOhm typical RDS(on) keeps conduction loss under 1W at 5A output. The 22 nC total gate charge enables switching frequencies above 250 kHz when paired with a dedicated gate driver such as IR21064 or IRS2184. Compared with bipolar transistors, the MOSFET eliminates storage-time losses and improves light-load efficiency. The DPAK tab provides sufficient heatsinking for 30W converter designs with adequate copper area.
Recommended
Automotive 12V/24V Load Switch
The IRLR2908TRPBF is well suited to automotive load-switch and ECU power-stage applications thanks to its 80V Vds margin above the 24V jump-start transient envelope. Its 30A continuous rating handles headlamp relays, fuel-pump drivers, and HVAC blower switches with low conduction loss. The avalanche-rated HEXFET process absorbs the energy of unclamped inductive loads. For AEC-Q101 qualified builds use the AUIRLR2908 variant in the same DPAK footprint. Reverse-battery protection can be implemented by adding a Schottky diode in series with the source.
Recommended
Brushless DC Motor Drive (3-Phase Inverter)
In a 3-phase BLDC inverter the IRLR2908TRPBF can be used as the low-side FET in each half-bridge leg for sub-100V motor systems. The 30A continuous rating covers fractional-horsepower motors used in fans, pumps, and small e-bike traction drives. Fast body-diode recovery and 22 nC Qg support PWM frequencies up to 50 kHz for low acoustic noise. The 175C junction temperature rating gives substantial thermal margin over ambient. For higher-current drives parallel multiple IRLR2908TRPBF devices and gate-balance them with individual source resistors.
Recommended
Solenoid and Relay Driver
The IRLR2908TRPBF is an excellent low-side driver for 12V/24V solenoids, relays, and valve coils where fast switching and energy dissipation matter. When the coil is de-energized, the MOSFET must absorb the inductive kickback; the IRLR2908's avalanche rating handles this directly without an external TVS clamp in many cases. Its low 22.5 mOhm RDS(on) keeps the solenoid at full pull-in voltage even with long harness runs. The TO-252 package is easy to mount on a chassis-side PCB with the drain tab acting as a heatsink.
Recommended
LED Lighting Driver (High-Brightness)
Constant-current LED drivers for high-brightness architectural and automotive lighting benefit from the IRLR2908TRPBF's low RDS(on) and high switching speed. In a buck or linear-current regulator topology the MOSFET can PWM dim the LED string at several kHz with minimal switching noise. Its 80V Vds handles large LED strings on 48V bus systems. The DPAK tab provides thermal dissipation for high-current LED strings, eliminating the need for an isolated heatsink in compact fixtures.
Recommended
Battery Protection and Hot-Swap Controller
In battery-pack protection circuits and hot-swap controllers the IRLR2908TRPBF acts as the low-side disconnect switch. Its low RDS(on) minimizes voltage drop across the protection FET, preserving battery capacity. The 30A continuous rating covers 4S-8S Li-ion packs used in power tools and e-mobility. The 80V Vds protects against cell overvoltage and external transients. The DPAK package simplifies PCB layout where a high-side P-channel MOSFET would otherwise be required.
Recommended
Recommended Products Summary
Engineering reference data for IRLR2908TRPBF β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AUIRLR2908TRL | IRLR2908TRLPBF | IRLB4030PBF | VBE1104N |
|---|---|---|---|---|---|
| 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 | VBsemi |
| Vds (Drain-Source Voltage) | 80 V | 80 V | 80 V | 40 V | [DATA_NEEDED] |
| Continuous Drain Current (Id) | 30 A | 30 A | 30 A | [DATA_NEEDED] | [DATA_NEEDED] |
| RDS(on) max @ Vgs=10V | 28 mOhm | 28 mOhm | 28 mOhm | [DATA_NEEDED] | [DATA_NEEDED] |
| Automotive Qualified (AEC-Q101) | No | Yes (AEC-Q101) | No | No | No |
| Technology | IR HEXFET | IR HEXFET | IR HEXFET | IR HEXFET | Trench MOSFET |
| Approx. Unit Price (qty-1, USD) | 0.99 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Wide 80V Vds headroom for 24V industrial and 48V telecom rails (vs IRLB4030PBF)
- AEC-Q101 qualified version available in same footprint (vs IRLR2908TRPBF (non-automotive))
- Mature IR HEXFET process with proven long-term reliability (vs VBE1104N)
Design Notes
Estimated thermal analysis: with Pd=120W at Tc=25C and a typical DPAK theta_JA of ~50 C/W on 1 oz copper (1 sq inch), continuous 30A operation at VIN=24V, VOUT=12V will dissipate roughly P=(24-12)*30=360 mW which is trivial. However at low-VIN switching-regulator continuous loads near 30A, Rtheta_JA must be verified against the datasheet SOA curve. For continuous high-current operation, solder the drain tab to at least 1 sq inch of 2 oz copper to keep junction below 150C.
Mount the DPAK drain tab onto a copper pour that also serves as the drain thermal pad. Use multiple thermal vias (0.3mm drill, 1mm pitch) under the tab to inner layers for additional heat spreading. Place gate-drive traces away from drain switching nodes to minimize dv/dt-induced gate glitches; a 10k gate-source pull-down resistor prevents spurious turn-on during power-up.
Do not exceed Vgs abs-max of +/-20V. Add a 10V Zener or TVS between gate and source for protection against inductive transients on the gate driver supply. For avalanche operation above the rated EAS, add an external TVS or RCD snubber. Verify the diode forward current rating if using the body diode in a synchronous-rectifier role - parallel a Schottky if reverse-recovery loss is significant.
Compliance Information
PBF suffix indicates lead-free, RoHS-compliant. AEC-Q101 automotive version available as AUIRLR2908. Halogen-free status not confirmed in provided data.
