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

Infineon Technologies AUIRFR5505

Name: AUIRFR5505
Brand: Infineon Technologies
SKU: AUIRFR5505
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRFR5505

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: AUIRFR5505.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:5,505

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Product details

Overview

AUIRFR5505 from Infineon is a P-channel automotive-grade HEXFET® Power MOSFET in D-Pak (TO-252AA) package, rated for -55 V V_DS, 0.11 Ω R_DS(on) at -10 V V_GS, and -18 A continuous drain current at 25°C. It operates up to +150°C junction temperature, features full avalanche rating, and is optimized for high-reliability automotive load switching such as body control modules and motor drivers.

For engineers reviewing the AUIRFR5505 datasheet, AUIRFR5505 pinout, AUIRFR5505 application, or AUIRFR5505 equivalent, key selection criteria include its -55 V breakdown voltage, low on-resistance under automotive thermal constraints, fast switching (t_r = 28 ns), repetitive avalanche capability (E_AR = 5.7 mJ), and RoHS-compliant lead-free construction.

Technical Context

This device implements a planar silicon process with ruggedized die design to sustain repetitive unclamped inductive switching events up to T_jmax. Its gate threshold voltage range (-2.0 to -4.0 V) ensures robust turn-on margin in noisy 12 V automotive systems, while the -5.0 V/ns peak diode recovery dv/dt rating supports reliable operation during fast body-diode commutation.

The MOSFET's dynamic parameters-Q_g = 32 nC, Q_gd = 15 nC, and C_iss/C_oss/C_rss = 650/270/120 pF-enable efficient gate drive design for PWM frequencies up to several hundred kHz, and its R_θJC = 2.2°C/W supports direct heatsinking in space-constrained engine bay applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	-55 V - Withstands reverse battery transients and load dump spikes in 12 V automotive systems without breakdown.
R_DS(on)	0.11 Ω max @ V_GS = -10 V, I_D = -9.6 A - Enables <1.0 W conduction loss at 9.6 A, critical for thermally constrained PCB layouts.
I_D (cont)	-18 A @ T_C = 25°C - Supports high-current solenoid and lamp loads with minimal derating at ambient temperatures ≤ 85°C.
E_AS	150 mJ - Absorbs single-pulse inductive energy from relay or motor coil de-energization without failure.
t_r/t_f	28 ns / 16 ns - Reduces switching losses in 20–100 kHz PWM applications like LED dimming and fan speed control.
T_J range	-55°C to +150°C - Qualified per AEC-Q101 for under-hood deployment including transmission control units and HVAC actuators.
Q_g	32 nC - Determines minimum gate driver current requirement (~1.6 A peak for 20 ns rise time) in high-speed switching designs.

Pinout & Package

D-Pak (TO-252AA) surface-mount package with exposed drain pad for thermal enhancement and mechanical stability. Standard footprint per IR application note AN-994; soldered to 1" FR-4 PCB for R_θJA = 50°C/W.

Pin/Terminal	Circuit Role	Design Meaning
Gate (G)	Control input	Accepts logic-level or microcontroller-driven negative gate voltage; requires external pull-down for default-off behavior.
Drain (D)	High-side switch output	Connected to load supply rail; electrically tied to exposed copper pad for low-inductance, high-current return path.
Source (S)	Power return reference	Provides common node for gate drive reference and current sensing; internal source inductance (L_S = 7.5 nH) affects switching ringing.

Key Features

Feature	Design Value
Automotive qualification	AEC-Q101 qualified for engine control, lighting, and power distribution systems requiring zero field failures.
Full avalanche rating	Repetitive avalanche energy E_AR = 5.7 mJ enables safe operation during inductive flyback without snubbers.
Low R_DS(on) density	0.11 Ω achieved via advanced planar process - reduces die size and cost vs. trench alternatives at same voltage class.
Fast body diode	t_rr = 51–77 ns, Q_rr = 110–160 nC - minimizes reverse recovery losses in synchronous rectification and H-bridge freewheeling.
Thermal robustness	R_θJC = 2.2°C/W allows direct mounting to metal-core PCB or heatsink - sustains >10 W dissipation with <22°C rise above case.

Applications

Body Control Module (BCM)

Automotive Lighting Driver

Use Scenario: Switching 12 V incandescent and LED headlamp loads in centralized vehicle body controller.

IC Role / Device Role / Timing Role: High-side load switch controlling power delivery to lamps and relays; handles inrush currents up to -64 A pulsed.

Use Value: Avalanche rating absorbs relay coil energy; -55 V rating survives load dump transients; R_DS(on) limits self-heating during PWM dimming.

Use Scenario: Driving rear combination lamps (brake, turn, tail) with PWM-based brightness control.

IC Role / Device Role / Timing Role: Low-loss, fast-turning P-channel switch enabling 100–500 Hz dimming without audible noise or thermal stress.

Use Value: t_r/t_f < 50 ns prevents duty-cycle distortion; 150°C operation maintains reliability near hot exhaust components.

Engine Cooling Fan Controller

Transmission Solenoid Driver

Use Scenario: Controlling brushed DC cooling fans in engine bay with variable speed via PWM.

IC Role / Device Role / Timing Role: High-side switch interfacing MCU GPIO to fan motor; withstands back-EMF and thermal cycling.

Use Value: R_θJC = 2.2°C/W enables direct heatsink attachment; -18 A rating covers stall current of 150 W fans.

Use Scenario: Driving 12 V hydraulic solenoids in automatic transmission valve bodies.

IC Role / Device Role / Timing Role: Robust load switch handling repetitive inductive turn-off spikes and vibration-induced contact bounce.

Use Value: E_AS = 150 mJ eliminates need for external clamping diodes; AEC-Q101 ensures lifetime reliability over 15-year service life.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP55PF06	V_DS = -60 V, R_DS(on) = 0.12 Ω, no AEC-Q101 certification	Industrial-grade only; not validated for automotive temperature cycling or humidity testing	Select only for non-automotive prototypes or cost-sensitive non-safety systems
IRF9540NPBF	V_DS = -100 V, R_DS(on) = 0.20 Ω, TO-220 package, AEC-Q101 compliant	Larger footprint and higher conduction loss; better for higher-voltage transient immunity	Choose when system requires >60 V breakdown margin and board space permits through-hole mounting

Compared with STP55PF06 and IRF9540NPBF, AUIRFR5505 delivers optimal balance of automotive qualification, thermal efficiency (0.11 Ω), and compact D-Pak packaging-making it preferred for volume production in space- and reliability-critical BCM and lighting modules.

Availability

AUIRFR5505 is available at Aetrix Electronics and suitable for automotive body control modules, LED lighting drivers, engine cooling fan controllers, and transmission solenoid drivers requiring stable component supply across multi-year production cycles.

Supply support for AUIRFR5505 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, with global manufacturing and qualification infrastructure.

AUIRFR5505 belongs to the HEXFET® Automotive Power MOSFET product line, designed specifically for high-reliability 12 V automotive load switching where thermal resilience, avalanche robustness, and AEC-Q101 compliance are mandatory.

FAQ

What is the maximum allowable gate-to-source voltage for AUIRFR5505?

The absolute maximum V_GS is ±20 V. Operation beyond this risks permanent gate oxide damage. For reliable switching, gate drive should be limited to -10 V for full enhancement and 0 V or +5 V for guaranteed turn-off, with external clamping recommended if driving from higher-voltage sources.

Can AUIRFR5505 be used in high-frequency PWM applications above 100 kHz?

Yes-its 32 nC total gate charge and 28 ns rise time support efficient operation up to ~250 kHz, provided gate driver peak current exceeds 1.6 A and PCB layout minimizes parasitic inductance. Thermal performance must be verified at target duty cycle and ambient temperature.

Is the body diode suitable for continuous freewheeling current?

The intrinsic body diode supports continuous source current up to -18 A at T_C = 25°C, but its V_SD = -1.6 V at -9.6 A causes significant conduction loss. For sustained freewheeling, external Schottky bypass is recommended to reduce power dissipation and junction temperature rise.

Does AUIRFR5505 require a heatsink in typical automotive applications?

At ≤5 W continuous dissipation (e.g., -9.6 A × 0.11 Ω), the D-Pak package can operate without an external heatsink when mounted on ≥1"² FR-4 PCB. Above 5 W, or in enclosed environments >85°C ambient, a copper pour or clip-on heatsink is required to maintain T_J ≤ 150°C.

AUIRFR5505 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

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

Packaging:: Tube

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)

AUIRFR5505 FAQ

1.How can I place an order for AUIRFR5505 through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRFR5505 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 AUIRFR5505 reliable?

The price and inventory of AUIRFR5505 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRFR5505 is usually 5 days.

3.What payment methods are accepted for AUIRFR5505?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRFR5505 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRFR5505?

AUIRFR5505 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRFR5505 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 AUIRFR5505?

For technical support, including AUIRFR5505 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRFR5505 requirements.

6.How does Aetrix verify that AUIRFR5505 is sourced from the original manufacturer or authorized distributors?

All AUIRFR5505 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 AUIRFR5505 meets industry standards.

7.What is the process for return or replacement of AUIRFR5505?

All AUIRFR5505 units undergo pre-shipment inspection (PSI). If there is an issue with AUIRFR5505, 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 AUIRFR5505 part is unused and in its original packaging.

Return procedure for AUIRFR5505:

1.Submit a request within 90 days.

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

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