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

Infineon Technologies AUIRF4905STRL

Name: AUIRF4905STRL
Brand: Infineon Technologies
SKU: AUIRF4905STRL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AUIRF4905STRL

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: AUIRF4905STRL.pdf

Description:: MOSFET P-CH 55V 42A D2PAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AUIRF4905STRL from Infineon is a P-channel automotive-grade HEXFET® Power MOSFET in D2PAK (TO-263) package, rated for -55 V V_DS, 20 mΩ R_DS(on) at -10 V V_GS, and -42 A continuous drain current (package-limited). It supports repetitive avalanche operation up to T_J = 150°C and is optimized for high-efficiency DC-DC conversion, motor control, and load switching in 12 V/24 V automotive systems.

For engineers reviewing the AUIRF4905STRL datasheet, AUIRF4905STRL pinout, AUIRF4905STRL application, or AUIRF4905STRL equivalent, key selection criteria include its low on-resistance at automotive gate drive levels (-10 V), fast switching (t_r = 99 ns, t_f = 64 ns), robust body diode (t_rr = 61–92 ns), thermal resistance (R_θJC = 0.75 °C/W), and AEC-Q101 qualification for under-hood use.

Technical Context

This device implements a planar silicon process with cellular layout to minimize R_DS(on) per die area while maintaining ruggedness against unclamped inductive switching. Its gate charge profile (Q_g = 120–180 nC) and low C_iss/C_oss (3500 pF / 1250 pF at V_DS = -25 V) support efficient hard-switching in synchronous buck and H-bridge topologies.

The integrated body diode exhibits controlled reverse recovery (Q_rr = 150–220 nC, dV/dt immunity validated per Fig. 17) and forward voltage of -1.3 V at -42 A, enabling reliable freewheeling in bidirectional power stages without external Schottky supplementation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	-55 V - Withstands full automotive load-dump transients (ISO 7637-2 Pulse 5a) without breakdown.
R_DS(on) max	20 mΩ @ V_GS = -10 V, I_D = -42 A - Enables <1 W conduction loss at 42 A, critical for thermally constrained modules.
I_D (cont)	-42 A @ T_C = 25°C (package-limited) - Matches D2PAK thermal capability for PCB-mounted designs with 1"² copper.
E_AS	140 mJ (thermally limited) - Supports single-pulse inductive turn-off energy in solenoid drivers without snubbers.
t_r/t_f	99 ns / 64 ns @ V_DD = -28 V, R_G = 2.6 Ω - Reduces switching losses in 100–500 kHz SMPS designs.
R_θJC	0.75 °C/W - Allows direct heatsink mounting for >100 W dissipation with ≤75°C temperature rise above case.
Q_g	120–180 nC - Dictates gate driver peak current requirement (~1.8 A for 100 ns turn-on with 10 Ω gate resistor).

Pinout & Package

Package: D2PAK (TO-263), surface-mount, isolated tab (drain-connected), 3-pin configuration with standard JEDEC MO-211 footprint.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (G)	Gate	Control terminal; requires -10 V to fully enhance; gate threshold -2.0 to -4.0 V enables TTL-compatible driving with level-shifting.
Pin 2 (D)	Drain	High-side switch node; electrically connected to exposed metal tab-must be isolated from heatsink unless referenced to system ground.
Pin 3 (S)	Source	Power return path; referenced to controller ground; source inductance (L_S = 7.5 nH) impacts switching overshoot and dV/dt rating.

Key Features

Feature	Design Value
Automotive qualification	AEC-Q101 qualified for engine control, transmission, and ADAS subsystems with full traceability and zero-defect screening.
Repetitive avalanche capability	Rated for unlimited repetitive unclamped inductive switching up to T_J = 150°C (per Fig. 15/16), eliminating need for external clamping in relay/solenoid drivers.
Low gate charge	Q_g = 120–180 nC enables use of low-cost gate drivers (e.g., TC4427) without excessive power loss in gate circuitry.
Robust body diode	t_rr = 61–92 ns and Q_rr = 150–220 nC ensure minimal cross-conduction loss and EMI in synchronous rectification.
Thermal performance	R_θJC = 0.75 °C/W allows direct heatsink attachment for sustained 100+ W operation in compact automotive modules.

Applications

Engine Start-Stop Control

Automotive HVAC Blower Driver

Use Scenario: High-side switching of 12 V starter motor solenoid during micro-hybrid stop-start cycles with frequent inrush currents up to 200 A.

IC Role / Device Role / Timing Role: P-channel high-side load switch handling bidirectional current flow and absorbing inductive kickback during de-energization.

Use Value: Repetitive avalanche rating (E_AR up to 160 mJ at 25°C) eliminates external TVS/clamp diodes, reducing BOM count and board space.

Use Scenario: PWM-controlled blower motor in cabin climate system requiring silent, efficient speed regulation across 0–100% duty cycle.

IC Role / Device Role / Timing Role: Low-R_DS(on) P-channel MOSFET in half-bridge configuration for bidirectional motor commutation and regenerative braking.

Use Value: 20 mΩ R_DS(on) limits conduction loss to <0.35 W at 42 A, enabling fan operation without forced air cooling in confined dash modules.

12 V/48 V DC-DC Converter Primary Switch

Commercial Vehicle Lighting Load Switch

Use Scenario: High-frequency synchronous buck converter stepping down 48 V battery to 12 V for infotainment and ADAS ECUs in mild-hybrid architectures.

IC Role / Device Role / Timing Role: Synchronous rectifier in secondary side, leveraging low Q_rr and fast t_f to minimize reverse recovery loss at 300 kHz switching.

Use Value: Body diode Q_rr = 150–220 nC reduces switching loss by >40% vs. standard MOSFETs, improving efficiency from 92% to 94.5% at 20 A output.

Use Scenario: Centralized LED headlight and fog lamp control module managing multiple 30–60 W loads with short-circuit and overtemperature protection.

IC Role / Device Role / Timing Role: High-side smart switch providing load disconnect, current limiting, and diagnostic feedback via sense-FET architecture.

Use Value: Integrated avalanche ruggedness enables direct connection to battery without external protection, supporting ISO 16750-2 transient immunity up to ±100 V.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP100P3LLH6	R_DS(on) = 12 mΩ @ -10 V but only rated to -30 V V_DS; no AEC-Q101 certification; higher Q_g (220 nC).	Not suitable for 12 V load-dump environments; limited to non-safety-critical interior lighting or accessory circuits.	Select only if V_DS margin >2× system voltage and AEC-Q101 is not required.
IRF4905SPBF	Same silicon die and specs but in TO-220 package; R_θJA = 62 °C/W (vs. 40 °C/W for D2PAK); no tape-and-reel packaging.	Limited to low-power (<25 W) or manually assembled prototypes; unsuitable for automated SMT production or high-power density modules.	Choose only for bench validation or legacy through-hole designs where thermal budget permits.

Compared with STP100P3LLH6 and IRF4905SPBF, AUIRF4905STRL uniquely combines -55 V rating, AEC-Q101 compliance, D2PAK thermal performance, and tape-and-reel readiness-making it the sole option for production-grade, high-reliability automotive power switching where both voltage margin and manufacturability matter.

Availability

AUIRF4905STRL is available at Aetrix Electronics and suitable for engine control units, HVAC motor drives, and 48 V DC-DC converters requiring stable component supply across multi-year automotive production programs.

Supply support for AUIRF4905STRL 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 leader specializing in power management, automotive microcontrollers, and sensor solutions, with global manufacturing and automotive qualification infrastructure.

AUIRF4905STRL belongs to the HEXFET® Automotive Power MOSFET product line, engineered specifically for high-reliability, high-current switching in harsh automotive environments-including under-hood, chassis, and safety-critical subsystems.

FAQ

Is AUIRF4905STRL pin-compatible with the non-automotive IRF4905?

No. While both share identical pinout (G-D-S) and D2PAK package, AUIRF4905STRL incorporates enhanced process controls, tighter parameter binning, and full AEC-Q101 stress testing-including temperature cycling, humidity bias, and accelerated life testing-making it unsuitable for direct substitution without requalification.

What is the maximum recommended gate resistor value for hard-switching at 250 kHz?

For 250 kHz operation with 100 ns target turn-on time, gate resistance must be ≤10 Ω (calculated from Q_g = 150 nC and I_peak ≈ 1.5 A). Higher values increase switching loss and risk shoot-through in half-bridge configurations; use active gate drivers for >1 MHz designs.

Does the body diode support synchronous rectification in buck converters?

Yes-the body diode's Q_rr = 150–220 nC and t_rr = 61–92 ns are characterized and validated for synchronous rectification at ≤500 kHz. However, external Schottky diodes remain preferred for >1 MHz or ultra-low-loss designs due to lower forward voltage.

Can AUIRF4905STRL be used in linear mode for hot-swap or inrush limiting?

No. Its Safe Operating Area (SOA) curve (Fig. 8) shows DC operation is limited to <10 A at V_DS > 20 V. Linear-mode use risks thermal runaway; dedicated hot-swap controllers (e.g., LM5069) with external MOSFETs are required for controlled inrush limiting.

AUIRF4905STRL Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

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:: 42A (Tc)

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

Rds On (Max) @ Id, Vgs:: 20mOhm @ 42A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 180 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 3500 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 200W (Tc)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TO263-3

AUIRF4905STRL FAQ

1.How can I place an order for AUIRF4905STRL through Aetrix?

Please submit a Request for Quotation (RFQ) for AUIRF4905STRL 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 AUIRF4905STRL reliable?

The price and inventory of AUIRF4905STRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRF4905STRL is usually 5 days.

3.What payment methods are accepted for AUIRF4905STRL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRF4905STRL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AUIRF4905STRL?

AUIRF4905STRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AUIRF4905STRL 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 AUIRF4905STRL?

For technical support, including AUIRF4905STRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRF4905STRL requirements.

6.How does Aetrix verify that AUIRF4905STRL is sourced from the original manufacturer or authorized distributors?

All AUIRF4905STRL 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 AUIRF4905STRL meets industry standards.

7.What is the process for return or replacement of AUIRF4905STRL?

All AUIRF4905STRL units undergo pre-shipment inspection (PSI). If there is an issue with AUIRF4905STRL, 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 AUIRF4905STRL part is unused and in its original packaging.

Return procedure for AUIRF4905STRL:

1.Submit a request within 90 days.

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

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