IRFR3710ZTRPBF - 100V N-Channel 56A HEXFET MOSFET | Infineon
MPN： IRFR3710ZTRPBF ✓ 啟用中IRFR3710ZTRPBF 概覽
A power MOSFET is a voltage-controlled semiconductor switch that uses the gate field effect to modulate current flow between the drain and source terminals. Within the discrete semiconductor taxonomy, MOSFETs belong to the field-effect transistor family and serve as the fundamental building block of switched-mode power supplies, motor drives, and synchronous rectification stages. The DPAK (TO-252AA) package is one of the most widely adopted surface-mount outlines for medium-power MOSFETs because its exposed thermal pad provides a low thermal resistance path while keeping the PCB footprint compact.
Key features of the IRFR3710ZTRPBF include a 175 °C maximum junction operating temperature for high ambient or pulsed-power environments, fast switching speed suitable for high-frequency converters, an improved repetitive avalanche rating for inductive load switching, and a logic-level-friendly 10 V VGS(th) typical gate threshold. The low RDS(on) of 18 mOhm directly reduces conduction losses and improves thermal performance in continuous-current paths such as low-side switches and synchronous rectifiers.
Architecturally, the device uses Infineon's HEXFET cell structure, a planar/vertical DMOS design optimized for low figure-of-merit (RDS(on) × Qg) and rugged avalanche capability. This combination delivers strong efficiency in hard-switched topologies and resilience against voltage transients induced by motor windings or transformer leakage inductance.
Typical applications include DC-DC buck/boost converters, synchronous rectification in isolated power supplies, motor drive H-bridges, solenoid and relay drivers, battery protection circuits, and hot-swap controllers. The DPAK footprint also makes it attractive for space-constrained industrial and telecom power designs.
When designing with this MOSFET, ensure the gate driver can source and sink the Qg charge quickly to minimize switching losses, and observe SOA limits at high VDS and high drain current. A low-impedance gate-drive loop and adequate PCB copper under the thermal pad are required to realize the rated 140 W dissipation.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 IRFR3710ZTRPBF — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： IRFR3710ZTRPBF （相同外形與佔位） — 差異在於 Technology, Package, Total Gate Charge (Qg), Operating Temperature Range, Mounting Type.
IRFR3710ZPBF
✅ 直接替換📋 參考替代品（不在目錄中）
IRFR3710ZTR
✅ 直接替換📋 參考替代品（不在目錄中）
IRFR3711ZTRPBF
✅ 直接替換📋 參考替代品（不在目錄中）
IRFR3710ZTRPBF 最大額定值與電氣特性
| FET Type | N-Channel |
| Drain-Source Voltage (VDS) | 100 V |
| Continuous Drain Current (ID) at TC=25C | 56 A |
| Gate-Source Voltage (VGS) | ±20 V |
| Static Drain-Source On-Resistance RDS(on) max at VGS=10V | 18 mOhm |
| Power Dissipation (PD) at TC=25C | 140 W |
| 工作接面溫度 | -55C to +175C |
| Technology | HEXFET (IR MOSFET) |
| 封裝 | TO-252AA (DPAK) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
IRFR3710ZTRPBF 腳位配置
| 腳位 1 | Gate — Gate control input; driven by 10V gate drive signal |
| 腳位 2 | Drain — Drain terminal (also internally connected to the tab/back thermal pad) |
| 腳位 3 | Source — Source terminal; typically connected to circuit ground or low-side return |
IRFR3710ZTRPBF 安全工作區
典型應用
IRFR3710ZTRPBF 適用於 6 應用s: Synchronous Rectification in SMPS, DC-DC Buck Converter High-Side Switch, Brushless DC Motor Drive, Battery Protection and Hot-Swap, Automotive 12 V/24 V Load Switch, Solar Inverter and Power Optimizer.
Synchronous Rectification in SMPS
The IRFR3710ZTRPBF is well-suited as a synchronous rectifier on the low-side of a 100 V-rated switched-mode power supply. Its 18 mOhm RDS(on) at VGS = 10 V reduces conduction losses compared to a Schottky diode, especially at high output currents where I^2R losses dominate. Placed on the secondary side of a forward or half-bridge converter, the MOSFET's fast switching speed minimizes dead-time loss and improves overall efficiency by 1-3% versus diode rectification. The DPAK package's exposed thermal pad allows direct PCB copper heatsinking, which is critical when the rectifier carries continuous current above 20 A in telecom or server power designs.
推薦
DC-DC Buck Converter High-Side Switch
As a high-side switch in a 48 V-to-12 V or 24 V-to-5 V buck converter, the IRFR3710ZTRPBF offers a 100 V VDS rating that comfortably handles 48 V input transients. The 18 mOhm RDS(on) keeps full-load efficiency above 95% in non-isolated POL converters up to 15 A output. The 175 °C junction rating allows operation in sealed industrial enclosures with limited airflow. Gate-drive requirements are modest - a standard 10 V bootstrap driver is sufficient because the device's gate charge is well within typical PWM controller drive capabilities, and the HEXFET process provides a clean switching waveform with low ringing.
推薦
Brushless DC Motor Drive
In a 3-phase brushless DC (BLDC) motor drive operating from a 48 V or 60 V bus, the IRFR3710ZTRPBF handles PWM switching frequencies up to 50 kHz while its 56 A continuous current rating supports motors up to approximately 2 kW. The HEXFET cell structure provides rugged avalanche capability needed when commutating motor winding inductance, where voltage spikes can exceed 2× the bus voltage. The DPAK package's low thermal resistance (about 1.5 °C/W junction-to-case) keeps the MOSFET cool under continuous PWM operation, and the surface-mount form factor enables compact integrated motor-control PCB designs for drones, e-bikes, and small industrial pumps.
推薦
Battery Protection and Hot-Swap
The IRFR3710ZTRPBF is commonly deployed as the main disconnect switch in 48 V lithium battery packs and server hot-swap OR-ing circuits. Its 100 V VDS rating handles 48 V bus plus inductive transients, while the 56 A ID rating supports high inrush currents during hot-plug events. The 18 mOhm RDS(on) introduces less than 1 V drop at 50 A, minimizing conduction loss in continuous-discharge paths. Built-in avalanche ruggedness protects the device if the load becomes shorted during insertion. The DPAK footprint also enables integration with surface-mount BMS controllers on the same PCB layer, reducing manufacturing complexity.
推薦
Automotive 12 V/24 V Load Switch
In automotive 12 V or 24 V load-switch applications such as LED drivers, fuel pumps, and HVAC blower controls, the IRFR3710ZTRPBF handles continuous currents up to 56 A with low conduction loss. The 100 V VDS rating provides ample margin for load-dump transients up to 60 V. However, because the part is not AEC-Q100 qualified, Infineon recommends the IRFR3710Z-ATMA1 or other automotive-grade variants for safety-critical vehicle systems. The DPAK package's resistance to mechanical vibration and thermal cycling makes it a popular choice in under-hood power distribution modules where PCB space is constrained.
推薦
Solar Inverter and Power Optimizer
Within micro-inverters and DC power optimizers used in residential solar, the IRFR3710ZTRPBF serves as the high-frequency switching element on the 40-60 V PV-input side. Its 100 V VDS rating covers open-circuit PV voltage at low temperature with margin, and the 18 mOhm RDS(on) keeps conversion efficiency above 97% in peak-power-tracking operation. The 175 °C junction temperature rating supports installation in sealed rooftop enclosures exposed to direct sunlight. The HEXFET process provides the ruggedness needed to handle long-term operation at high duty cycles, which is critical for solar applications where 25-year reliability is expected.
推薦
推薦產品摘要
工程參考資料，適用於 IRFR3710ZTRPBF — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | IRFR3710ZPBF | IRFR3710ZTR | IRFR3711ZTRPBF |
|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon |
| Package | TO-252AA (DPAK) | TO-252AA (DPAK) - same | TO-252AA (DPAK) - same | TO-252AA (DPAK) - same |
| Drain-Source Voltage (VDS) | 100 V | 100 V | 100 V | 100 V |
| Continuous Drain Current (ID) | 56 A | 56 A | 56 A | 56 A |
| Power Dissipation | 140 W | 140 W | 140 W | 140 W |
| Maximum Junction Temperature | 175 C | 175 C | 175 C | 175 C |
| Packaging Format | Tape & Reel (Pb-free) | Tube (Pb-free) | Tape & Reel (non-Pb-free) | Tape & Reel (Pb-free) |
主要差異化特點
- Same silicon, different packaging format (對比IRFR3710ZPBF)
- Pin-compatible 100V N-channel in same DPAK footprint (對比IRFR3711ZTRPBF)
- Higher continuous current vs smaller-pkg alternatives (對比IRLML2803TRPBF)
設計說明
Estimated: at 25 A continuous current with RDS(on) = 18 mOhm (rising to ~25 mOhm at 100 °C), conduction loss is about 25 A × 25 A × 25 mOhm = 15.6 W. The DPAK TO-252AA has a junction-to-case thermal resistance of roughly 1.5 °C/W, so a heatsink or 1 square inch of top-side copper is essential to keep the junction below 150 °C. Without a heatsink, the part will thermal-limit within seconds at this current level.
Solder the DPAK tab directly to a PCB copper pour that is connected to the drain pin. Use thermal vias (at least 9 vias of 0.3 mm diameter) under the thermal pad to transfer heat to internal copper layers. Gate-trace length should be kept under 10 mm to minimize parasitic inductance, and a 10 ohm gate-source resistor is recommended to prevent unintended turn-on from drain-voltage transients (Miller effect).
Do not exceed VGS = ±20 V even though the part may appear to tolerate higher voltages on a curve tracer. Exceeding the gate-source rating destroys the thin gate oxide and causes immediate failure. Also avoid operating the MOSFET in its linear region for extended periods - if the design requires analog operation, derate to 25% of rated power or use a part with larger SOA headroom.
合規資訊
Pb-free plating per Infineon datasheet (PBF suffix). Not AEC-Q100 qualified - choose an automotive-grade Infineon part for vehicle applications. RoHS and REACH compliant per LCSC and DigiKey product listings.
