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

Infineon Technologies IPB45P03P4L11ATMA2

Name: IPB45P03P4L11ATMA2
Brand: Infineon Technologies
SKU: IPB45P03P4L11ATMA2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IPB45P03P4L11ATMA2

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: IPB45P03P4L11ATMA2.pdf

Description:: MOSFET_(20V 40V) PG-TO263-3

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Inventory:5,794

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Product details

Overview

IPB45P03P4L11ATMA2 from Infineon Technologies is a P-channel logic-level enhancement-mode MOSFET in PG-TO263-3-2 package, rated for -30 V V_DS, 10.8 mΩ R_DS(on) at V_GS = -10 V and I_D = -45 A, with 100% avalanche testing and AEC qualification. It is designed specifically for reverse battery protection in automotive power distribution systems.

For engineers reviewing the IPB45P03P4L11ATMA2 datasheet, IPB45P03P4L11ATMA2 pinout, IPB45P03P4L11ATMA2 application, or IPB45P03P4L11ATMA2 equivalent, key selection criteria include its -45 A continuous drain current at T_C = 25 °C, -1.5 V typical gate threshold voltage, 2.6 K/W junction-to-case thermal resistance, and MSL1 rating for lead-free reflow up to 260 °C.

Technical Context

This OptiMOS®-P2 device operates as a high-reliability P-channel switch in low-side configuration for polarity reversal protection. Its logic-level gate drive (V_GS(th) = -1.0 to -2.0 V) enables direct interface with 3.3 V/5 V microcontrollers, while the integrated body diode supports bidirectional current handling during fault transients.

The MOSFET features robust unclamped inductive switching capability (E_AS = 110 mJ at I_D = -22.5 A), 175 °C maximum operating temperature, and RoHS-compliant green packaging - all validated per AEC-Q101 for automotive under-hood applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	-30 V - Maximum blocking voltage for 12 V automotive battery reverse-polarity events
R_DS(on)	10.8 mΩ @ V_GS = -10 V, I_D = -45 A - Low conduction loss enabling <1.5 W dissipation at full load
I_D (continuous)	-45 A @ T_C = 25 °C - Supports high-current power rails in engine control units and junction boxes
E_AS	110 mJ - Withstands single-pulse inductive energy without failure in load-dump scenarios
V_GS(th)	-1.5 V (typ.) - Ensures reliable turn-on with standard logic-level drivers, no level-shifting required
R_thJC	2.6 K/W - Enables efficient heat transfer to heatsink or PCB copper area for thermal management
T_j max	+175 °C - Certified operation in under-hood environments including transmission control modules

Pinout & Package

PG-TO263-3-2 (D²PAK) package with exposed drain pad for thermal and electrical connection. Standard 3-pin layout: 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 max); low Q_g (42–55 nC) enables fast switching with minimal driver effort
Pin 2 (Drain)	High-side or low-side power path	Exposed metal tab - electrically connected to drain; must be isolated from chassis unless used as heatsink return
Pin 3 (Source)	Reference node for gate drive	Connected to system ground or battery negative; defines V_GS reference for accurate threshold control

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive use including temperature cycling, humidity, and mechanical shock per JESD47
100% avalanche tested	Each unit passes single-pulse unclamped inductive switching test at rated E_AS = 110 mJ
MSL1 reflow rating	Withstands peak soldering temperatures up to 260 °C without delamination or parametric shift
OptiMOS®-P2 silicon	Optimized trench process delivering lower R_DS(on) × Q_g figure-of-merit vs. prior generation P-channel devices
Green (RoHS) compliant	No lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE - meets EU Directive 2011/65/EU

Applications

Engine Control Unit (ECU) Power Input Protection

Body Control Module (BCM) Reverse Polarity Guard

Use Scenario: Prevents damage when vehicle battery terminals are accidentally reversed during jump-start or replacement.

IC Role / Device Role / Timing Role: Low-side P-channel MOSFET configured as ideal diode replacement in main 12 V supply rail.

Use Value: Eliminates 0.7 V forward drop of Schottky diodes, reducing power loss by >90 % and thermal stress on PCB.

Use Scenario: Protects BCM from reverse voltage during service or wiring faults in lighting, door lock, and HVAC subsystems.

IC Role / Device Role / Timing Role: Standby-mode reverse-battery switch with <1 µA leakage (I_DSS ≤ -1 µA at 25 °C).

Use Value: Maintains ultra-low quiescent current in sleep mode while providing fail-safe isolation.

Transmission Control Module (TCM) Power Stage

Start-Stop System Battery Management

Use Scenario: Safeguards TCM against reverse polarity during cold-cranking or alternator field collapse.

IC Role / Device Role / Timing Role: High-current (−45 A) power switch with 175 °C rated junction temperature for under-hood placement.

Use Value: Sustains operation through transient thermal spikes without derating or shutdown.

Use Scenario: Enables bidirectional energy flow control between starter battery and auxiliary storage in intelligent start-stop architectures.

IC Role / Device Role / Timing Role: Reverse-blocking element in dual-battery isolation circuit with integrated body diode for freewheeling.

Use Value: Supports 35 ns reverse recovery time (t_rr) and 26 nC Q_rr for clean commutation during regenerative braking transitions.

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
IPP45P03P4L11AKSA1	Same die, PG-TO220-3-1 package; higher R_thJA (62 K/W vs. 40 K/W on PCB)	Limited to lower-power or forced-air-cooled designs; not suitable for compact SMD layouts	Select when mechanical mounting constraints require TO-220 footprint and thermal budget allows ≥2× larger heatsink
IPB45P03P4L11ATMA1	Identical specs and package; differs only in tape-and-reel packaging (11ATMA1 vs. 11ATMA2)	No functional difference; both support same automotive qualification and reliability testing	Choose based on assembly line feed requirements - 11ATMA2 is standard 2,000-piece reel; 11ATMA1 is alternate reel variant

Compared with IPP45P03P4L11AKSA1, IPB45P03P4L11ATMA2 delivers superior thermal performance in space-constrained SMD applications; versus IPB45P03P4L11ATMA1, it offers identical electrical behavior with optimized logistics packaging for high-volume surface-mount production.

Availability

IPB45P03P4L11ATMA2 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and transmission control systems requiring stable component supply across extended product lifecycles.

Supply support for IPB45P03P4L11ATMA2 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 switching in automotive power distribution networks where reverse polarity resilience and thermal robustness are critical.

FAQ

What is the maximum allowable gate-source voltage for IPB45P03P4L11ATMA2?

The absolute maximum V_GS is −16 V. Operation beyond this risks permanent gate oxide damage. Recommended drive range is −4.5 V to −10 V for optimal R_DS(on) and switching speed, with −10 V ensuring full enhancement across temperature and process variation.

Does IPB45P03P4L11ATMA2 require a gate resistor in reverse-battery protection circuits?

Yes - a series gate resistor (typically 10–100 Ω) is recommended to dampen ringing during turn-on/turn-off and limit peak gate current. This prevents oscillation induced by trace inductance and ensures controlled dV/dt, especially critical in high-di/dt automotive loads.

Can IPB45P03P4L11ATMA2 be used in parallel configurations?

Yes, but only with matched devices and symmetrical PCB layout. The positive temperature coefficient of R_DS(on) provides inherent current sharing above ~100 °C; however, gate drive impedance matching and thermal coupling must be carefully managed to avoid imbalance at lower temperatures.

Is the body diode of IPB45P03P4L11ATMA2 suitable for continuous freewheeling?

No - the body diode is rated for pulsed forward current (I_S,pulse = −180 A), not continuous conduction. For sustained freewheeling, external Schottky or SiC diodes with lower V_F and higher thermal capacity should be used in anti-parallel configuration.

IPB45P03P4L11ATMA2 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:: Obsolete

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

IPB45P03P4L11ATMA2 FAQ

1.How can I place an order for IPB45P03P4L11ATMA2 through Aetrix?

Please submit a Request for Quotation (RFQ) for IPB45P03P4L11ATMA2 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 IPB45P03P4L11ATMA2 reliable?

The price and inventory of IPB45P03P4L11ATMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IPB45P03P4L11ATMA2 is usually 5 days.

3.What payment methods are accepted for IPB45P03P4L11ATMA2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IPB45P03P4L11ATMA2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IPB45P03P4L11ATMA2?

IPB45P03P4L11ATMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IPB45P03P4L11ATMA2 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 IPB45P03P4L11ATMA2?

For technical support, including IPB45P03P4L11ATMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IPB45P03P4L11ATMA2 requirements.

6.How does Aetrix verify that IPB45P03P4L11ATMA2 is sourced from the original manufacturer or authorized distributors?

All IPB45P03P4L11ATMA2 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 IPB45P03P4L11ATMA2 meets industry standards.

7.What is the process for return or replacement of IPB45P03P4L11ATMA2?

All IPB45P03P4L11ATMA2 units undergo pre-shipment inspection (PSI). If there is an issue with IPB45P03P4L11ATMA2, 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 IPB45P03P4L11ATMA2 part is unused and in its original packaging.

Return procedure for IPB45P03P4L11ATMA2:

1.Submit a request within 90 days.

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

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