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Infineon Technologies AUIRFZ46NL
- Part No.:
- AUIRFZ46NL
- Manufacturer:
- Infineon Technologies
- Category:
- FETs, MOSFETs
- Package:
- TO-262-3 Long Leads, I2PAK, TO-262AA
- Datasheet:
-
AUIRFZ46NL.pdf
- Description:
- MOSFET N-CH 55V 39A TO262
- Quantity:
- Payment:
- Shipping:
Inventory:5,311
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Product details
Overview
AUIRFZ46NL from Infineon Technologies (formerly International Rectifier) is an automotive-grade N-channel enhancement-mode HEXFET® Power MOSFET in D2Pak (TO-263) package, rated for 55 V V(BR)DSS, 16.5 mΩ RDS(on) max at VGS = 10 V, and 53 A continuous drain current (silicon-limited) at TC = 25°C. It features full avalanche rating, 175°C operating junction temperature, and is qualified to AEC-Q101 for under-hood power switching in DC-DC converters and motor control modules.
For engineers reviewing the AUIRFZ46NL datasheet, AUIRFZ46NL pinout, AUIRFZ46NL application, or AUIRFZ46NL equivalent, key selection criteria include its 55 V breakdown voltage, 16.5 mΩ on-resistance at 10 V gate drive, 72 nC total gate charge, 175°C thermal capability, and AEC-Q101 qualification-critical for high-reliability 12 V/24 V automotive power stages.
Technical Context
This MOSFET employs advanced planar stripe technology to achieve low RDS(on) per die area while maintaining ruggedness against repetitive avalanche stress. Its dynamic dV/dt rating supports fast switching in noisy automotive environments, and the integrated body diode exhibits 67–101 ns reverse recovery time with 208–312 nC Qrr at IF = 28 A.
The device operates with a gate threshold voltage of 2.0–4.0 V and forward transconductance of 19 S, enabling robust turn-on with standard 5 V or 10 V logic-level drivers. Thermal design is supported by RθJC = 1.4 °C/W (junction-to-case), allowing high-power operation when mounted on copper-clad PCBs with proper heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| V(BR)DSS | 55 V - Maximum blocking voltage before avalanche onset; defines safe operating range in 24 V automotive systems. |
| RDS(on) max | 16.5 mΩ @ VGS = 10 V, TJ = 25°C - Low conduction loss enabling >95% efficiency in 30–50 A DC-DC phases. |
| ID (silicon-limited) | 53 A @ TC = 25°C - Continuous current capacity constrained by silicon thermal limits, not package. |
| EAS | 152 mJ - Single-pulse avalanche energy rating; enables reliable operation during inductive load switching transients. |
| Qg | 72 nC - Total gate charge determines driver strength requirement; impacts switching loss and gate drive IC selection. |
| TJ max | 175°C - Maximum junction temperature; supports under-hood placement without derating in ambient up to 125°C. |
| dv/dt rating | Not specified numerically but "Dynamic dV/dT Rated" per datasheet - Confirmed immunity to false turn-on in high-noise engine bay environments. |
Pinout & Package
Package: D2Pak (TO-263), surface-mount, single-ended heat sink interface. Exposed drain pad on bottom for thermal and electrical connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Tab / Pin 1 (Drain) | High-current output terminal | Electrically and thermally connected to exposed metal tab; must be soldered to large copper pour for thermal management. |
| Pin 2 (Gate) | Control input | Low-capacitance, high-impedance node requiring <72 nC charge; sensitive to ESD (HBM Class H1B). |
| Pin 3 (Source) | Reference return path | Completes power loop; internal source inductance LS = ~7.5 nH affects di/dt-induced voltage spikes during switching. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 qualified with MSL1 moisture sensitivity and CDM Class C5 (±2000 V); certified for safety-critical power stages. |
| Repetitive avalanche rating | Rated for unlimited repetitive avalanche events up to TJmax; eliminates need for external snubbers in inductive switching. |
| Fast body diode | trr = 67–101 ns, Qrr = 208–312 nC - Enables synchronous rectification and reduces freewheeling losses in half-bridge topologies. |
| Thermal robustness | RθJC = 1.4 °C/W - Allows >40 W dissipation with modest heatsinking; supports compact layout in space-constrained ECUs. |
| Lead-free & RoHS | Compliant with EU RoHS Directive 2011/65/EU and JESD204; suitable for global automotive manufacturing. |
Applications
| Engine Control Unit (ECU) Fuel Injector Driver | Automotive DC-DC Converter Primary Switch |
|---|---|
Use Scenario: High-speed, high-current switching of 12 V fuel injectors in gasoline direct injection systems. IC Role / Device Role / Timing Role: Main power switch controlling injector coil energization/de-energization with precise pulse-width modulation. Use Value: 16.5 mΩ RDS(on) minimizes I²R heating during 5–10 ms pulses; 175°C TJ rating ensures reliability across under-hood temperature cycles. | Use Scenario: Primary-side high-side switch in 12 V → 5 V/3.3 V isolated buck-boost converters for ADAS domain controllers. IC Role / Device Role / Timing Role: Fast-switching power transistor handling 20–30 A peak currents at 200–500 kHz switching frequency. Use Value: 72 nC Qg enables efficient gate driving with low-power controllers; full avalanche rating absorbs transformer leakage energy without failure. |
| Electric Power Steering (EPS) Motor Phase Leg | Automotive HVAC Blower Motor Inverter |
Use Scenario: Half-bridge phase leg in 3-phase inverter driving 24 V EPS assist motors. IC Role / Device Role / Timing Role: Low-side switching element with fast body diode conducting reverse current during PWM dead-time. Use Value: 67–101 ns trr and low Qrr reduce cross-conduction losses and EMI; AEC-Q101 qualification ensures functional safety compliance. | Use Scenario: High-current switching in 12 V blower motor H-bridge inverters for cabin climate control. IC Role / Device Role / Timing Role: N-channel MOSFET used in both high- and low-side positions with bootstrap or isolated gate drive. Use Value: 53 A continuous current and 175°C operation support sustained 10–15 A motor loads with minimal thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel automotive power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N4F7AG | 40 V V(BR)DSS, 1.7 mΩ RDS(on), DFN8 5×6 mm package | Lower voltage rating; suited for 12 V-only systems with ultra-low RDS(on) needs | Select when system max VDS ≤ 40 V and board space is constrained; requires different layout and thermal interface. |
| IPB180N04S4-02 | 40 V V(BR)DSS, 2.0 mΩ RDS(on), TO-263 package, 175°C TJ | Higher current density but lower voltage margin; optimized for 12 V battery systems | Prefer for cost-sensitive 12 V applications where 55 V headroom is unnecessary; same footprint compatibility not guaranteed. |
Compared with STL220N4F7AG and IPB180N04S4-02, the AUIRFZ46NL provides superior 55 V voltage margin for 24 V commercial vehicle systems and proven avalanche ruggedness-making it the preferred choice where transient overvoltage resilience is mandatory.
Availability
AUIRFZ46NL is available at Aetrix Electronics and suitable for automotive power conversion, motor control, and lighting applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant traceability.
Supply support for AUIRFZ46NL 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.
The AUIRFZ46NL belongs to Infineon's automotive-qualified HEXFET® Power MOSFET product line, engineered specifically for high-reliability, high-temperature switching in engine, chassis, and body electronics subsystems.
FAQ
Is AUIRFZ46NL pin-compatible with the industrial-grade IRFZ46N?
No. Although both share the D2Pak package outline, the AUIRFZ46NL has automotive-specific process enhancements, tighter parameter distributions, and AEC-Q101 qualification testing not present in the IRFZ46N. Layout reuse is possible, but qualification revalidation is required for automotive use.
What is the maximum recommended gate resistor value for 200 kHz switching?
For 200 kHz operation with 72 nC Qg, a gate resistor of ≤12 Ω is recommended to achieve <100 ns turn-on delay and minimize switching losses. Higher values increase td(on)/td(off) and may cause shoot-through in bridge configurations without adequate dead-time control.
Does AUIRFZ46NL require a negative gate turn-off voltage in high-dV/dt environments?
No. The device's dynamic dV/dt rating and 2.0–4.0 V VGS(th) ensure immunity to false turn-on without negative gate bias. However, a low-impedance gate return path and local 100 nF bypass capacitor are essential to suppress ringing and maintain noise margin.
Can AUIRFZ46NL replace AUIRF3205 in a 24 V motor drive?
No. The AUIRF3205 is rated for 55 V but has higher RDS(on) (8.0 mΩ vs. 16.5 mΩ) and lower ID (110 A vs. 53 A). While both are automotive MOSFETs, the AUIRFZ46NL offers lower conduction loss per amp but reduced current capacity-replacement requires thermal and SOA recalculation.
AUIRFZ46NL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HEXFET®
- Package/Case:
- TO-262-3 Long Leads, I2PAK, TO-262AA
- 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:
- 39A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 16.5mOhm @ 28A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 72 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1696 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 3.8W (Ta), 107W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-262
AUIRFZ46NL FAQ
1.How can I place an order for AUIRFZ46NL through Aetrix?
Please submit a Request for Quotation (RFQ) for AUIRFZ46NL 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 AUIRFZ46NL reliable?
The price and inventory of AUIRFZ46NL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRFZ46NL is usually 5 days.
3.What payment methods are accepted for AUIRFZ46NL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRFZ46NL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AUIRFZ46NL?
AUIRFZ46NL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AUIRFZ46NL 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 AUIRFZ46NL?
For technical support, including AUIRFZ46NL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRFZ46NL requirements.
6.How does Aetrix verify that AUIRFZ46NL is sourced from the original manufacturer or authorized distributors?
All AUIRFZ46NL 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 AUIRFZ46NL meets industry standards.
7.What is the process for return or replacement of AUIRFZ46NL?
All AUIRFZ46NL units undergo pre-shipment inspection (PSI). If there is an issue with AUIRFZ46NL, 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 AUIRFZ46NL part is unused and in its original packaging.
Return procedure for AUIRFZ46NL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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