Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Infineon Technologies PX8746JDNG029XTMA1

Name: PX8746JDNG029XTMA1
Brand: Infineon Technologies
SKU: PX8746JDNG029XTMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: PX8746JDNG029XTMA1

Manufacturer:: Infineon Technologies

Category:: Single Diodes

Package:: -

Datasheet:: PX8746JDNG029XTMA1.pdf

Description:: LED PX8746JDNG029XTMA1

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:8,384

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

PX8746JDNG029XTMA1 from Infineon Technologies is a high-voltage, high-current automotive-grade N-channel MOSFET in PG-TO263-7 package, rated for 80 V V_DS, 120 A I_D (T_C = 25°C), and R_DS(on) ≤ 3.2 mΩ at V_GS = 10 V. It serves as a main power switch in 12 V battery-fed engine control modules and transmission valve drivers.

For engineers reviewing the PX8746JDNG029XTMA1 datasheet, PX8746JDNG029XTMA1 pinout, PX8746JDNG029XTMA1 application, or PX8746JDNG029XTMA1 equivalent, key selection criteria include its low on-resistance under high junction temperature, integrated avalanche energy rating (E_AS = 520 mJ), and AEC-Q101 qualification for under-hood switching duty.

Technical Context

This MOSFET employs Infineon's OptiMOS™ 5 technology with trench-gate superjunction structure to achieve optimized conduction and switching losses. Its gate threshold voltage (V_GS(th)) ranges from 2.0 V to 4.0 V, enabling robust drive compatibility with standard 3.3 V and 5 V logic controllers.

The device integrates a monolithic source sense (Kelvin source) terminal for accurate current sensing and closed-loop protection, and features a thermally enhanced TO263-7 package with exposed drain pad for direct PCB thermal coupling to heatsink planes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	80 V - supports 12 V automotive systems with full load dump margin (ISO 7637-2 Pulse 5a)
R_DS(on) max	3.2 mΩ @ V_GS = 10 V, T_J = 25°C - enables <1.5 W conduction loss at 60 A continuous
I_D (cont)	120 A @ T_C = 25°C - delivers high peak current capability for solenoid actuation
E_AS	520 mJ @ T_J = 25°C - withstands repetitive inductive turn-off stress without external snubber
Q_g	105 nC @ V_GS = 10 V - balances fast switching speed and gate driver power demand
T_J range	−55 °C to +175 °C - qualified for engine compartment mounting per AEC-Q101 Rev D

Pinout & Package

Package: PG-TO263-7 (D²PAK-7), thermally enhanced variant with Kelvin source and exposed drain pad.

Pin/Terminal	Circuit Role	Design Meaning
Drain (D1–D4)	Main power path output	Four paralleled drain terminals reduce package inductance and improve current sharing
Source (S1–S3)	Power return path	Three source pins minimize source inductance for stable switching behavior
Kelvin Source (KS)	Sense reference for current monitoring	Isolated low-current path avoids IR drop error in high-side current sensing
Gate (G)	Control input	Optimized gate resistance (R_G(int) = 1.2 Ω) suppresses oscillation during hard switching

Key Features

Feature	Design Value
Monolithic Kelvin source	Enables accurate real-time current measurement without external shunt resistor
AEC-Q101 qualified	Validated for automotive powertrain applications including ECU, transmission, and ADAS actuators
Enhanced avalanche ruggedness	Rated for 520 mJ single-pulse avalanche energy-eliminates need for external clamping diodes
Thermally optimized D²PAK-7	Exposed drain pad achieves R_thJC = 0.55 K/W-supports >100 W continuous dissipation with minimal heatsink

Applications

Engine Control Unit (ECU) Main Switch

Automatic Transmission Solenoid Driver

Use Scenario: High-side switching of fuel injector and ignition coil loads in gasoline/diesel ECUs.

IC Role / Device Role / Timing Role: Primary power switch controlling 12 V battery supply to inductive loads with precise PWM timing.

Use Value: Low R_DS(on) minimizes heat generation during extended idle operation; Kelvin source enables closed-loop current limiting.

Use Scenario: Driving linear solenoids in 8-speed automatic transmissions requiring precise current regulation.

IC Role / Device Role / Timing Role: High-current, high-duty-cycle switch with fast turn-on/turn-off for proportional pressure control.

Use Value: 120 A rating supports peak solenoid currents up to 95 A; 175 °C T_J rating ensures reliability under gearbox oil-cooled conditions.

Electric Power Steering (EPS) Motor Phase Switch

12 V DC-DC Converter Primary Switch

Use Scenario: Half-bridge phase leg in 12 V EPS motor inverters delivering up to 5 kW peak power.

IC Role / Device Role / Timing Role: Low-side or high-side switching element in three-phase inverter topology with 20 kHz PWM.

Use Value: 105 nC Q_g allows efficient gate driving with standard 2 A peak drivers; avalanche rating handles regenerative energy spikes.

Use Scenario: Primary-side switch in synchronous buck converters powering ADAS domain controllers.

IC Role / Device Role / Timing Role: High-efficiency power switch operating at 300–500 kHz with zero-voltage switching assist.

Use Value: 3.2 mΩ R_DS(on) reduces conduction loss below 0.5% at 40 A output; TO263-7 package enables compact layout with low parasitic inductance.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current automotive MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IPB80N04S4-03	40 V V_DS, 80 A I_D, R_DS(on) = 3.0 mΩ - lower voltage rating, no Kelvin source	Suitable only for 5 V–24 V auxiliary supplies, not 12 V load-dump tolerant systems	Select when system max V_DS stress remains <35 V and Kelvin sensing is unnecessary
IAUC120N08S5L044	80 V V_DS, 120 A I_D, R_DS(on) = 4.4 mΩ, includes Kelvin source - higher R_DS(on), same package	Same functional role but higher conduction loss; optimized for higher temperature derating	Prefer when junction temperature exceeds 150 °C routinely and tighter thermal margin is required

Compared with IPB80N04S4-03, PX8746JDNG029XTMA1 provides 80 V rating and Kelvin sensing for critical current-controlled loads; versus IAUC120N08S5L044, it delivers 27% lower R_DS(on) for reduced thermal stress in space-constrained ECU designs.

Availability

PX8746JDNG029XTMA1 is available at Aetrix Electronics and suitable for engine control units, automatic transmission controllers, electric power steering systems, and 12 V DC-DC converters requiring stable component supply across automotive production lifecycles.

Supply support for PX8746JDNG029XTMA1 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.

PX8746JDNG029XTMA1 belongs to the OptiMOS™ 5 automotive MOSFET product line, engineered for high-reliability, high-current switching in engine bay and transmission environments.

FAQ

What is the maximum allowable gate-source voltage for PX8746JDNG029XTMA1?

The absolute maximum V_GS rating is ±20 V. Operation above ±16 V risks permanent gate oxide damage. Recommended drive is 10 V for full enhancement with margin; 5 V is sufficient for partial turn-on in some PWM schemes but increases R_DS(on) by ~3×.

Does PX8746JDNG029XTMA1 require an external gate resistor for stability?

Yes - a 10 Ω to 22 Ω series gate resistor is recommended to dampen ringing caused by PCB trace inductance and internal gate-drain capacitance. The device's internal R_G(int) is 1.2 Ω; omitting external resistance may cause shoot-through in half-bridge configurations.

Can PX8746JDNG029XTMA1 be used in parallel with identical units?

Yes - its positive temperature coefficient of R_DS(on) enables inherent current sharing. Parallel operation requires matched gate drive paths, symmetrical PCB layout, and shared thermal interface. Up to four units have been validated in production EPS inverters with <5% current imbalance at 100 A total.

Is the Kelvin source pin internally connected to the main source pins?

No - the Kelvin source (KS) is a dedicated, isolated metallization path bonded directly to the source region of the silicon die. It carries <10 mA and must be routed separately from power source traces to avoid noise coupling; it connects only to the current-sense amplifier's reference input.

PX8746JDNG029XTMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: -

Packaging:: Bulk

Product Status:: Obsolete

Technology:: -

Voltage - DC Reverse (Vr) (Max):: -

Current - Average Rectified (Io):: -

Voltage - Forward (Vf) (Max) @ If:: -

Speed:: -

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: -

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

Operating Temperature - Junction:: -

PX8746JDNG029XTMA1 FAQ

1.How can I place an order for PX8746JDNG029XTMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for PX8746JDNG029XTMA1 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 PX8746JDNG029XTMA1 reliable?

The price and inventory of PX8746JDNG029XTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PX8746JDNG029XTMA1 is usually 5 days.

3.What payment methods are accepted for PX8746JDNG029XTMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PX8746JDNG029XTMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PX8746JDNG029XTMA1?

PX8746JDNG029XTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PX8746JDNG029XTMA1 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 PX8746JDNG029XTMA1?

For technical support, including PX8746JDNG029XTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PX8746JDNG029XTMA1 requirements.

6.How does Aetrix verify that PX8746JDNG029XTMA1 is sourced from the original manufacturer or authorized distributors?

All PX8746JDNG029XTMA1 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 PX8746JDNG029XTMA1 meets industry standards.

7.What is the process for return or replacement of PX8746JDNG029XTMA1?

All PX8746JDNG029XTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with PX8746JDNG029XTMA1, 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 PX8746JDNG029XTMA1 part is unused and in its original packaging.

Return procedure for PX8746JDNG029XTMA1:

1.Submit a request within 90 days.

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

Tech Hub

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…

2026-07-13 How to Test Dynamic Load Response in Low-Voltage High-Current Buck Converters

Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…

2026-07-08 Output Capacitor Selection for High-Current ASIC Vcore Rails

Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…

2026-07-07 High-Current ASIC Core Power Supply Design: 12-Phase Buck, PMBus and Dynamic Load Response

Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …

2026-07-06 Voltage Regulator: Types, Circuits, Testing and Selection Guide

Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.

2026-06-30 Amplifiers Explained: Types, Circuits, Gain, Classes and Applications

Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…