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Infineon Technologies AUIRFR48Z
- Part No.:
- AUIRFR48Z
- Manufacturer:
- Infineon Technologies
- Category:
- FETs, MOSFETs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AUIRFR48Z.pdf
- Description:
- MOSFET N-CH 55V 42A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:6,261
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Product details
Overview
AUIRFR48Z from Infineon is an automotive-qualified N-channel D-Pak HEXFET® Power MOSFET with 55 V VDS, 11 mΩ max RDS(on) at VGS = 10 V, 42 A package-limited continuous drain current, and 175 °C maximum junction temperature. It delivers ultra-low conduction loss and fast switching for high-efficiency DC-DC converters and motor control in engine management systems.
For engineers reviewing the AUIRFR48Z datasheet, AUIRFR48Z pinout, AUIRFR48Z application, or AUIRFR48Z equivalent, key selection criteria include its 1.64 °C/W RθJC, 60 nC max total gate charge, 110 mJ tested single-pulse avalanche energy, and validated repetitive avalanche capability up to Tjmax.
Technical Context
This MOSFET employs advanced silicon processing to achieve 8.86 mΩ typical RDS(on) at 37 A and 10 V gate drive, enabling high-current switching with minimal I²R loss. Its 175 °C rated junction temperature supports operation in under-hood automotive environments without derating.
The device features a robust body diode with 37 A continuous source current, 20 ns typical reverse recovery time, and 14 nC reverse recovery charge - critical for synchronous rectification and freewheeling in buck converters and H-bridge motor drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 55 V - Withstands transients up to 55 V in 12 V automotive systems without clamping. |
| RDS(on) max | 11 mΩ @ VGS = 10 V, ID = 37 A - Enables ≤0.15 W conduction loss at 37 A, reducing thermal load. |
| ID (package) | 42 A @ TC = 25 °C - Defines PCB-mount thermal limit for sustained operation on standard FR-4. |
| EAS tested | 110 mJ - Confirmed unclamped inductive switching margin for motor phase-leg snubbing. |
| Qg max | 60 nC - Determines gate driver power requirement; compatible with low-power 12 V gate drivers. |
| RθJC | 1.64 °C/W - Enables direct heatsink mounting for >90 W dissipation with <150 °C ΔT. |
| tr/tf | 61 ns / 35 ns @ ID = 37 A - Supports >500 kHz switching in high-frequency DC-DC stages. |
Pinout & Package
Package: D-Pak (TO-252AA), surface-mount, single-sided heatsinking via exposed drain pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Drain (D) | Main current path output terminal | Connected to exposed copper pad - primary thermal path to PCB heatsink or external heatsink. |
| Gate (G) | Control input | High-impedance MOS gate requiring <60 nC charge; sensitive to ESD; must be driven with low-inductance layout. |
| Source (S) | Reference node for gate drive and current return | Common reference for gate driver supply; carries full load current and body diode reverse recovery current. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low RDS(on) | 8.86 mΩ typical enables ≥96% efficiency in 12 V → 5 V/30 A buck converters at 500 kHz. |
| 175 °C operating temperature | Eliminates need for thermal derating in engine bay applications up to ambient 125 °C. |
| Repetitive avalanche rated | Validated for repeated unclamped inductive switching up to Tjmax, supporting robust motor phase-leg design. |
| Fast body diode | 20 ns trr and 14 nC Qrr reduce switching loss and voltage overshoot during freewheeling. |
Applications
| Engine Control Unit (ECU) Fuel Injector Driver | Automotive HVAC Blower Motor Controller |
|---|---|
|
Use Scenario: High-side switching of 12 V fuel injectors with peak currents up to 40 A and 1 ms pulse width. IC Role / Device Role / Timing Role: Main power switch handling pulsed inductive loads with integrated avalanche energy absorption. Use Value: 110 mJ tested EAS and 175 °C rating ensure reliable operation across -40 °C to +125 °C ambient without external snubbers. |
Use Scenario: Half-bridge PWM control of 24 V blower motors in climate control systems. IC Role / Device Role / Timing Role: Low-side switch in H-bridge with fast turn-off to minimize shoot-through risk during commutation. Use Value: 35 ns fall time and 11 mΩ RDS(on) reduce conduction and switching losses, extending motor life and reducing audible noise. |
| 12 V → 5 V Automotive DC-DC Converter | Start-Stop System Battery Disconnect Switch |
|
Use Scenario: Synchronous rectifier in high-frequency buck converter supplying infotainment and ADAS modules. IC Role / Device Role / Timing Role: Secondary-side power switch with body diode conducting during dead time. Use Value: 20 ns trr and low Qrr minimize reverse recovery loss and EMI generation at 1 MHz switching. |
Use Scenario: Bidirectional main battery isolation switch activated during engine cranking or regenerative braking. IC Role / Device Role / Timing Role: Single-pole, double-throw (SPDT) replacement using back-to-back configuration for reverse polarity protection. Use Value: 55 V VDS withstands load dump transients up to ISO 7637-2 Pulse 5a (110 V/100 ms), ensuring system survival. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL130N5LF8AG | 60 V VDS, 1.9 mΩ typ RDS(on), 130 A ID (package), DFN8 5×6 mm package | Higher current density but requires multi-layer PCB thermal vias; no qualified automotive grade | Select when board space is constrained and thermal design includes aggressive copper pour/via stacking. |
| IRF4905PbF | 55 V VDS, 20 mΩ max RDS(on), TO-220 package, non-automotive grade | Larger footprint, lower thermal performance (RθJC = 2.5 °C/W), no 175 °C rating | Select only for cost-sensitive non-automotive prototypes where qualification is not required. |
Compared with STL130N5LF8AG and IRF4905PbF, AUIRFR48Z uniquely balances automotive qualification, D-Pak manufacturability, and 11 mΩ conduction loss - making it optimal for production-grade engine bay power stages where reliability and assembly yield are critical.
Availability
AUIRFR48Z is available at Aetrix Electronics and suitable for engine control units, HVAC motor drives, automotive DC-DC converters, and start-stop battery management systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AUIRFR48Z 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.
AUIRFR48Z belongs to Infineon's automotive-qualified HEXFET® Power MOSFET product line, engineered specifically for high-reliability, high-temperature switching in engine management, transmission control, and chassis systems.
FAQ
Is AUIRFR48Z pin-compatible with standard D-Pak MOSFETs?
Yes - AUIRFR48Z uses the industry-standard D-Pak (TO-252AA) outline with Drain-Gate-Source pin order (pin 1 = Drain, pin 2 = Gate, pin 3 = Source). Its mechanical footprint and solder pad layout match JEDEC MO-238, enabling drop-in replacement in existing D-Pak designs without PCB revision.
What is the maximum recommended gate drive voltage for AUIRFR48Z?
The absolute maximum VGS is ±20 V, but Infineon specifies optimal switching performance at VGS = 10 V. Driving above 12 V yields diminishing RDS(on) improvement while increasing gate oxide stress and ESD susceptibility - 10 V is the recommended nominal gate drive for automotive reliability.
Does AUIRFR48Z require a gate resistor for safe operation?
Yes - a series gate resistor (typically 10–22 Ω) is required to control dV/dt and prevent parasitic oscillation during switching. The 60 nC gate charge and fast 35 ns fall time make it susceptible to ringing without proper gate loop inductance control; resistor value must be selected based on driver capability and layout parasitics.
Can AUIRFR48Z be used in parallel configurations?
Yes - its positive RDS(on) temperature coefficient (0.054 V/°C) ensures inherent current sharing across paralleled devices. However, matched layout symmetry, individual gate resistors, and Kelvin-source routing are mandatory to avoid thermal runaway; Infineon recommends ≤3 devices in parallel for production designs.
AUIRFR48Z 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:
- N-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:
- 11mOhm @ 37A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 50µA
- Gate Charge (Qg) (Max) @ Vgs:
- 60 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1720 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 91W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252AA (DPAK)
AUIRFR48Z FAQ
1.How can I place an order for AUIRFR48Z through Aetrix?
Please submit a Request for Quotation (RFQ) for AUIRFR48Z 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 AUIRFR48Z reliable?
The price and inventory of AUIRFR48Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRFR48Z is usually 5 days.
3.What payment methods are accepted for AUIRFR48Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRFR48Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AUIRFR48Z?
AUIRFR48Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AUIRFR48Z 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 AUIRFR48Z?
For technical support, including AUIRFR48Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRFR48Z requirements.
6.How does Aetrix verify that AUIRFR48Z is sourced from the original manufacturer or authorized distributors?
All AUIRFR48Z 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 AUIRFR48Z meets industry standards.
7.What is the process for return or replacement of AUIRFR48Z?
All AUIRFR48Z units undergo pre-shipment inspection (PSI). If there is an issue with AUIRFR48Z, 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 AUIRFR48Z part is unused and in its original packaging.
Return procedure for AUIRFR48Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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