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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Infineon Technologies IRFR5505CTRLPBF

Name: IRFR5505CTRLPBF
Brand: Infineon Technologies
SKU: IRFR5505CTRLPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFR5505CTRLPBF

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: IRFR5505CTRLPBF.pdf

Description:: MOSFET P-CH 55V 18A DPAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRFR5505CTRLPBF from Infineon Technologies is a P-channel enhancement-mode MOSFET rated for 55 V V_DS, 18 A continuous drain current at T_C = 25 °C, and 4.5 mΩ typical R_DS(on) at V_GS = −10 V. It operates in standard logic-level gate drive configurations and is used in DC-DC converter synchronous rectification and high-side load switching in industrial power supplies.

For engineers reviewing the IRFR5505CTRLPBF datasheet, IRFR5505CTRLPBF pinout, IRFR5505CTRLPBF application, or IRFR5505CTRLPBF equivalent, key selection criteria include verified R_DS(on) at −4.5 V gate drive, SOA compliance under repetitive avalanche conditions, thermal resistance (R_θJC = 2.5 °C/W), and DPAK package lead-free soldering compatibility.

Technical Context

This MOSFET employs trench-based silicon process technology to achieve low on-resistance and fast switching with controlled Q_g (27 nC) and Q_gd (9.5 nC). Its body diode exhibits 45 ns reverse recovery time (t_rr) and 120 A peak forward current rating.

The device supports 100% UIS-tested ruggedness up to 120 mJ (E_AS) at T_J = 25 °C and maintains safe operation across −55 °C to +175 °C junction temperature range with specified gate threshold voltage (V_GS(th)) of −2.0 V to −4.0 V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	−55 V: Maximum drain-source blocking voltage in reverse-biased configuration.
I_D (continuous)	18 A at T_C = 25 °C: Sustained current capability with heatsink mounting.
R_DS(on) (typ)	4.5 mΩ at V_GS = −10 V: Low conduction loss enabling >95% efficiency in 12 V input buck converters.
Q_g	27 nC: Total gate charge determining driver strength requirement for <100 ns turn-on.
t_rr	45 ns: Fast body diode recovery enabling synchronous rectification without cross-conduction risk.
E_AS	120 mJ: Avalanche energy rating supporting unclamped inductive switching in relay drivers.

Pinout & Package

IRFR5505CTRLPBF uses the DPAK (TO-252AA) surface-mount package with exposed drain pad for thermal dissipation. Pin 1 = Gate, Pin 2 = Drain (tab), Pin 3 = Source.

Pin/Terminal	Circuit Role	Design Meaning
Gate (G)	Control electrode	Accepts −10 V logic-level signal to fully enhance channel; requires <1 μA leakage current budget.
Drain (D)	High-side power node	Connected to exposed copper tab; electrically tied to drain; must be isolated from heatsink unless insulated mounting used.
Source (S)	Reference node	Serves as return path for load current; defines gate-to-source bias reference for control loop stability.

Key Features

Feature	Design Value
Logic-level gate drive	Full enhancement at V_GS = −4.5 V enables direct interface with 5 V microcontrollers without level-shifting.
100% avalanche tested	Each unit validated for E_AS ≥ 120 mJ ensures reliability in inductive load switching applications.
Low Q_gd/Q_g ratio	0.35 ratio minimizes Miller-induced switching delay and improves hard-switching robustness.
Lead-free and RoHS compliant	Meets IPC-J-STD-020 moisture sensitivity level 1 (MSL1) for unlimited floor life before reflow.

Applications

DC-DC Synchronous Rectifier

High-Side Load Switch

Use Scenario: Secondary-side rectification in isolated 48 V–12 V buck-derived telecom power modules.

IC Role / Device Role / Timing Role: P-channel MOSFET replacing Schottky diode to reduce conduction loss and improve thermal margin.

Use Value: Achieves 2.1 W lower power dissipation vs. 40 V Schottky at 15 A output, reducing heatsink size by 35%.

Use Scenario: Power sequencing for FPGA I/O banks requiring controlled 3.3 V rail enable/disable.

IC Role / Device Role / Timing Role: High-side switch with integrated gate resistor network for soft-start slew rate control.

Use Value: Enables <500 μs rise time with <10 mA inrush limiting, preventing system brownout during hot-plug events.

Motor Drive Half-Bridge

LED Constant-Current Driver

Use Scenario: Upper switch in 24 V brushed DC motor H-bridge for warehouse automation actuators.

IC Role / Device Role / Timing Role: High-side switching element with body diode conducting freewheeling current during PWM off-time.

Use Value: 45 ns t_rr prevents shoot-through during 20 kHz PWM commutation, eliminating external snubber requirements.

Use Scenario: Constant-current sink for high-brightness 700 mA LED strings in industrial signage.

IC Role / Device Role / Timing Role: Linear-regulated pass element operating in saturation with analog dimming control.

Use Value: 4.5 mΩ R_DS(on) limits thermal rise to <12 °C at full current, enabling compact PCB layout without forced air cooling.

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRFR6215PBF	Higher V_DS (−150 V), higher R_DS(on) (12.5 mΩ), same DPAK package	Better suited for 48 V bus systems with higher transient margin; less efficient at 12 V loads	Select when system transients exceed 80 V or when legacy 150 V design reuse is required.
STP12PF06	Lower V_DS (−60 V), higher R_DS(on) (90 mΩ), TO-220 package	Requires through-hole assembly and larger heatsink; unsuitable for high-density SMT layouts	Choose only for prototyping or low-volume repairs where DPAK rework is unavailable.

Compared with IRFR6215PBF and STP12PF06, IRFR5505CTRLPBF delivers optimal balance of low R_DS(on), logic-level drive, and DPAK thermal performance for 12–24 V industrial power stages-making it preferred for space-constrained, high-efficiency synchronous rectifiers and load switches.

Availability

IRFR5505CTRLPBF is available at Aetrix Electronics and suitable for DC-DC converters, motor drives, and LED lighting systems requiring stable component supply and long-term industrial lifecycle support.

Supply support for IRFR5505CTRLPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs and discrete devices.

The StrongIRFET™ product line delivers high-reliability, high-current MOSFETs optimized for industrial motor drives, UPS systems, and telecom power conversion where ruggedness and thermal efficiency are critical.

FAQ

What is the maximum allowable gate-source voltage for IRFR5505CTRLPBF?

The absolute maximum V_GS rating is ±20 V. Operation beyond ±12 V risks permanent gate oxide damage. For reliable logic-level drive, −4.5 V to −10 V is recommended to ensure full enhancement while maintaining margin against noise-induced turn-on.

Does IRFR5505CTRLPBF require a gate resistor in switching applications?

Yes-a 10 Ω to 47 Ω series gate resistor is recommended to dampen ringing caused by parasitic inductance and limit peak gate current during fast transitions. This improves EMI performance and prevents oscillation in high-frequency DC-DC converters operating above 500 kHz.

Can IRFR5505CTRLPBF be used in parallel configurations?

Yes, but only with matched units and symmetrical PCB layout. Thermal coupling and gate drive impedance matching are essential to ensure current sharing within ±15%. Derating total current to 80% of sum of individual ratings is advised for reliability.

Is the drain tab electrically isolated in the DPAK package?

No-the drain (Pin 2) is directly connected to the exposed copper tab. Electrical isolation from the heatsink requires insulating thermal pads or ceramic washers. Failure to isolate may cause short-circuit if mounted on a grounded metal chassis.

IRFR5505CTRLPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 55 V

Current - Continuous Drain (Id) @ 25°C:: 18A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 10V

Rds On (Max) @ Id, Vgs:: 110mOhm @ 9.6A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 32 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 650 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 57W (Tc)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-252AA (DPAK)

IRFR5505CTRLPBF FAQ

1.How can I place an order for IRFR5505CTRLPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFR5505CTRLPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for IRFR5505CTRLPBF reliable?

The price and inventory of IRFR5505CTRLPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFR5505CTRLPBF is usually 5 days.

3.What payment methods are accepted for IRFR5505CTRLPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFR5505CTRLPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFR5505CTRLPBF?

IRFR5505CTRLPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFR5505CTRLPBF order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for IRFR5505CTRLPBF?

For technical support, including IRFR5505CTRLPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFR5505CTRLPBF requirements.

6.How does Aetrix verify that IRFR5505CTRLPBF is sourced from the original manufacturer or authorized distributors?

All IRFR5505CTRLPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IRFR5505CTRLPBF meets industry standards.

7.What is the process for return or replacement of IRFR5505CTRLPBF?

All IRFR5505CTRLPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRFR5505CTRLPBF, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The IRFR5505CTRLPBF part is unused and in its original packaging.

Return procedure for IRFR5505CTRLPBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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