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

Infineon Technologies IPB45P03P4L11ATMA1

Name: IPB45P03P4L11ATMA1
Brand: Infineon Technologies
SKU: IPB45P03P4L11ATMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IPB45P03P4L11ATMA1

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: IPB45P03P4L11ATMA1.pdf

Description:: MOSFET P-CH 30V 45A TO263-3

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Product details

Overview

IPB45P03P4L11ATMA1 from Infineon Technologies is a P-channel logic-level enhancement-mode MOSFET in PG-TO263-3-2 package, rated for -30 V V_DS, 45 A continuous drain current at T_C = 25 °C, and 8.7–10.8 mΩ R_DS(on) at V_GS = -10 V. It is AEC-qualified, 100% avalanche tested, and designed specifically for reverse battery protection in automotive power systems.

For engineers reviewing the IPB45P03P4L11ATMA1 datasheet, IPB45P03P4L11ATMA1 pinout, IPB45P03P4L11ATMA1 application, or IPB45P03P4L11ATMA1 equivalent, key selection criteria include its -45 A pulsed drain capability, 110 mJ single-pulse avalanche energy, MSL1 reflow rating, and -55 °C to +175 °C operating temperature range - all critical for under-hood automotive power management.

Technical Context

This OptiMOS®-P2 device uses trench-based silicon technology optimized for low R_DS(on) and fast switching in high-current DC power paths. Its gate threshold voltage (V_GS(th)) ranges from -1.0 V to -2.0 V, enabling reliable turn-on with standard 3.3 V or 5 V logic-level drive.

The integrated body diode supports reverse recovery times of 35 ns and Q_rr of 26 nC at I_F = -45 A, making it suitable for bidirectional current handling in protection circuits where controlled freewheeling and low conduction loss are required.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	-30 V - Withstands reverse battery transients up to 30 V without breakdown.
R_DS(on) max @ V_GS = -10 V	11.1 mΩ - Enables ≤0.022 W conduction loss at 45 A, reducing thermal load in compact layouts.
I_D continuous @ T_C = 25 °C	-45 A - Supports high-current reverse polarity protection in 12 V/24 V automotive systems.
E_AS	110 mJ - Absorbs single-pulse inductive energy during load dump or hot-swap events without failure.
T_j operating range	-55 °C to +175 °C - Certified for under-hood placement in engine control units and junction boxes.
Q_g total	55 nC - Determines gate drive power requirement; compatible with standard automotive gate drivers (e.g., TLE7183).
V_SD @ I_F = -45 A	1.3 V max - Limits forward diode power dissipation to ≤59 W during reverse-current freewheeling.

Pinout & Package

IPB45P03P4L11ATMA1 is housed in a surface-mount PG-TO263-3-2 (D²PAK) package with exposed drain pad for thermal performance. The three terminals are arranged in standard configuration: Pin 1 = Gate, Pin 2 = Drain (tab), Pin 3 = Source.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Gate)	Control input	Accepts logic-level voltage (-10 V typical drive); threshold ensures turn-on at ≥-3.6 V plateau.
Pin 2 (Drain)	High-side power node	Connected to battery positive; large copper area required for thermal dissipation (R_thJC = 2.6 K/W).
Pin 3 (Source)	Reference return path	Connected to load side; defines system ground reference for gate drive and sensing.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive use per stress test requirements including temperature cycling, HTRB, and ESD.
100% avalanche tested	Each unit passes single-pulse E_AS = 110 mJ test, ensuring robustness against inductive switching faults.
Logic-level gate drive	V_GS(th) ≤ -2.0 V enables direct interface with microcontroller GPIO or low-voltage PMIC outputs.
Green product (RoHS)	Lead-free and halogen-free construction compliant with EU Directive 2011/65/EU and JESD201A.
MSL1 rating	Suitable for lead-free reflow up to 260 °C peak, eliminating moisture sensitivity concerns in SMT assembly.

Applications

Automotive Reverse Battery Protection

Engine Control Unit (ECU) Power Input Stage

Use Scenario: Installed between vehicle battery and electronic control module to block reverse polarity connection during service or jump-start.

IC Role / Device Role / Timing Role: High-side P-channel switch configured as always-on protection element with no external control signal required.

Use Value: Prevents catastrophic damage to downstream MCU, CAN transceivers, and analog sensors by blocking >30 V reverse voltage before it reaches sensitive circuitry.

Use Scenario: Integrated into the main 12 V power rail of an ECU to protect against battery reversal and load-dump transients.

IC Role / Device Role / Timing Role: Primary overvoltage and reverse-polarity barrier; operates continuously during engine cranking and alternator regulation cycles.

Use Value: Maintains uninterrupted operation across -40 °C to +150 °C ambient while dissipating <1.5 W at 25 A, minimizing heatsink requirements.

Body Control Module (BCM) Power Distribution

Start-Stop System Power Management

Use Scenario: Used in centralized BCM to isolate individual sub-systems (lighting, HVAC, door modules) from main battery bus.

IC Role / Device Role / Timing Role: Bidirectional current-handling switch supporting both normal load current and reverse recovery during fault clearing.

Use Value: Diode V_SD ≤ 1.3 V and t_rr = 35 ns enable fast freewheeling during PWM-controlled loads, reducing voltage spikes on shared rails.

Use Scenario: Employed in start-stop battery management to prevent backfeed from auxiliary battery to main starter circuit during engine restart.

IC Role / Device Role / Timing Role: Isolation switch activated only during stop phase; must survive repeated 175 °C junction temperature excursions.

Use Value: Rated for 175 °C T_j and 100% avalanche-tested, ensuring reliability over 100,000+ stop-start cycles without derating.

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel reverse battery protection applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IPP45P03P4L-11	Same die, TO-220-3-1 through-hole package; R_thJA = 62 K/W (no PCB cooling area).	Requires heatsink for >15 A continuous operation; unsuitable for space-constrained SMT designs.	Select when manual assembly, serviceability, or legacy board compatibility is prioritized over thermal density.
IPI45P03P4L-11	Same die, TO-262-3-1 package; R_thJC = 2.6 K/W but lower PCB thermal coupling than D²PAK.	Limited to ≤35 A continuous in standard FR4 layouts due to reduced copper area contact vs. PG-TO263-3-2.	Choose for hybrid mounting (SMT + mechanical retention) where D²PAK solder joint reliability is a concern.

Compared with IPP45P03P4L-11 and IPI45P03P4L-11, IPB45P03P4L11ATMA1 delivers superior thermal performance in automated SMT assembly via its exposed drain pad and optimized footprint, enabling higher sustained current in automotive ECUs without added heatsinking.

Availability

IPB45P03P4L11ATMA1 is available at Aetrix Electronics and suitable for automotive reverse battery protection, engine control unit (ECU) input stages, and body control module (BCM) power distribution requiring stable component supply and AEC-Q101 compliance.

Supply support for IPB45P03P4L11ATMA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and security solutions, with global R&D and manufacturing infrastructure.

This device belongs to the OptiMOS®-P2 family, engineered specifically for high-efficiency, high-reliability P-channel power switching in automotive 12 V/24 V systems - emphasizing low R_DS(on), robust avalanche capability, and extended temperature operation.

FAQ

Is IPB45P03P4L11ATMA1 pin-compatible with IPP45P03P4L-11?

No. IPB45P03P4L11ATMA1 uses PG-TO263-3-2 (D²PAK) packaging with surface-mount leads and an exposed drain pad, while IPP45P03P4L-11 uses TO-220-3-1 with through-hole pins and no thermal pad. Mechanical mounting, PCB layout, and thermal design are not interchangeable.

What is the maximum safe gate-source voltage for this MOSFET?

The absolute maximum V_GS is -16 V. Operation beyond this risks permanent gate oxide damage. For reliable long-term use, gate drive should be limited to -10 V to -12 V, matching the R_DS(on) test condition and avoiding unnecessary stress on the gate structure.

Does this part require a gate resistor in automotive applications?

Yes. A series gate resistor (typically 10–47 Ω) is recommended to dampen ringing caused by parasitic inductance in high-di/dt automotive environments. This prevents false turn-on due to Miller effect and reduces EMI during switching transitions in noisy under-hood settings.

Can IPB45P03P4L11ATMA1 be used in 48 V mild-hybrid systems?

No. Its -30 V V_DS rating is insufficient for 48 V nominal systems, which experience transients exceeding 60 V. Using it in such applications risks avalanche breakdown and premature failure. For 48 V systems, Infineon's OptiMOS™ 5 60 V or 75 V P-channel devices (e.g., IPB80P04P4L-02) are appropriate alternatives.

IPB45P03P4L11ATMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: OptiMOS™

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

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

FET Type:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 45A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 10.8mOhm @ 45A, 10V

Vgs(th) (Max) @ Id:: 2V @ 85µA

Gate Charge (Qg) (Max) @ Vgs:: 55 nC @ 10 V

Vgs (Max):: +5V, -16V

Input Capacitance (Ciss) (Max) @ Vds:: 3770 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 58W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TO263-3-2

IPB45P03P4L11ATMA1 FAQ

1.How can I place an order for IPB45P03P4L11ATMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for IPB45P03P4L11ATMA1 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 IPB45P03P4L11ATMA1 reliable?

The price and inventory of IPB45P03P4L11ATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IPB45P03P4L11ATMA1 is usually 5 days.

3.What payment methods are accepted for IPB45P03P4L11ATMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IPB45P03P4L11ATMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IPB45P03P4L11ATMA1?

IPB45P03P4L11ATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IPB45P03P4L11ATMA1 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 IPB45P03P4L11ATMA1?

For technical support, including IPB45P03P4L11ATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IPB45P03P4L11ATMA1 requirements.

6.How does Aetrix verify that IPB45P03P4L11ATMA1 is sourced from the original manufacturer or authorized distributors?

All IPB45P03P4L11ATMA1 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 IPB45P03P4L11ATMA1 meets industry standards.

7.What is the process for return or replacement of IPB45P03P4L11ATMA1?

All IPB45P03P4L11ATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IPB45P03P4L11ATMA1, 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 IPB45P03P4L11ATMA1 part is unused and in its original packaging.

Return procedure for IPB45P03P4L11ATMA1:

1.Submit a request within 90 days.

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

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