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Infineon Technologies AUIRF7303Q
- Part No.:
- AUIRF7303Q
- Manufacturer:
- Infineon Technologies
- Category:
- FET, MOSFET Arrays
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AUIRF7303Q.pdf
- Description:
- MOSFET 2N-CH 30V 5.3A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,397
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Product details
Overview
AUIRF7303Q from Infineon is a dual N-channel automotive-grade power MOSFET in SO-8 package, rated for 30 V VDS, 5.3 A continuous drain current at 25°C, and 0.05 Ω max RDS(on) at VGS = 10 V. It features logic-level gate drive, 175°C junction operation, and repetitive avalanche capability-designed for high-efficiency DC-DC converters and motor control in engine management systems.
For engineers reviewing the AUIRF7303Q datasheet, AUIRF7303Q pinout, AUIRF7303Q application, or AUIRF7303Q equivalent, this part supports automotive power switching with validated thermal robustness, fast switching (tr = 6.2 ns), and AEC-Q101 qualification-critical for under-hood load switching, BLDC gate drivers, and battery disconnect circuits.
Technical Context
This dual N-channel MOSFET integrates two independent HEXFET cells in a single SO-8 package with shared source terminals (S1/S2) and isolated gate/drain connections. Its planar silicon process delivers low RDS(on) per die area while maintaining rugged dv/dt immunity (1.6 V/ns) and guaranteed avalanche energy (1160 mJ tested).
The device operates across –55°C to +175°C junction temperature, supports logic-level turn-on (VGS(th) = 1.0–3.0 V), and exhibits dynamic parameters optimized for hard-switched topologies: Qg = 14–21 nC, Ciss = 515 pF, and td(off) = 15 ns-enabling efficient PWM control in 12 V automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 30 V - Maximum blocking voltage compatible with 12 V automotive battery rails including load dump transients. |
| RDS(on) max | 0.05 Ω @ VGS = 10 V - Enables <120 mW conduction loss at 5 A, critical for thermally constrained modules. |
| ID cont | 5.3 A @ TA = 25°C - Sustains peak loads in fan drivers and solenoid interfaces without forced cooling. |
| Qg | 14–21 nC - Determines gate driver current requirement; enables <100 ns total switching time with 200 mA drive. |
| TJ max | +175°C - Supports operation in engine bay environments where ambient exceeds 105°C. |
| EAS tested | 1160 mJ - Validates unclamped inductive switching reliability in relay/snubberless motor drives. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronics including HTGB, HTRB, and TC2000. |
Pinout & Package
Package: SO-8 surface-mount, 1.27 mm pitch, FR-4 board mounted, RθJA = 62.5°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Source 1 (S1) | Common source terminal for first MOSFET; electrically tied to pins 1–4 for low-inductance return path. |
| 5 | Gate 1 (G1) | Independent gate input for first channel; requires ≤20 V drive, logic-compatible down to 4.5 V. |
| 6 | Drain 1 (D1) | High-side or low-side switch node for first channel; rated for 30 V, 5.3 A continuous. |
| 7 | Gate 2 (G2) | Independent gate input for second channel; isolated from G1 to enable asymmetric PWM control. |
| 8 | Drain 2 (D2) | Second switch node; enables dual-phase or redundant load control in compact footprint. |
| - | Source 2 (S2) | Internally connected to S1 (pins 1–4); no separate pin-shared source simplifies PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Dual N-channel integration | Two independent 30 V/5.3 A switches in one SO-8 package-reduces board area by 40% vs. discrete solutions. |
| Logic-level gate drive | VGS(th) = 1.0–3.0 V enables direct interface with 3.3 V/5 V microcontrollers-eliminates level-shifting circuitry. |
| Repetitive avalanche rating | Rated for unlimited repetitive avalanche events up to TJmax-ensures survivability during inductive kickback in motor commutation. |
| Dynamic dv/dt immunity | 1.6 V/ns rated di/dt immunity prevents false turn-on in noisy high-speed switching environments. |
| Automotive thermal range | –55°C to +175°C operation validated per AEC-Q101-supports placement near engines or transmission controllers. |
Applications
| Engine Control Unit (ECU) Load Switching | Automotive HVAC Blower Motor Driver |
|---|---|
Use Scenario: Switching fuel injector solenoids and ignition coils in modern gasoline ECUs under transient-rich 12 V rail conditions. IC Role / Device Role / Timing Role: High-side or low-side power switch handling pulsed 3–5 A loads at 1–10 kHz PWM frequencies. Use Value: Low RDS(on) minimizes self-heating during extended duty cycles; avalanche rating absorbs coil flyback energy without snubbers. | Use Scenario: Driving brushed DC blower motors in climate control systems with variable speed demand and reverse polarity protection needs. IC Role / Device Role / Timing Role: Half-bridge upper/lower switch enabling bidirectional motor control via complementary PWM signals. Use Value: Dual-channel integration reduces component count; logic-level gates simplify MCU interface; 175°C rating ensures reliability near heater cores. |
| 12 V Battery Disconnect Module | Automotive LED Headlamp Dimming |
Use Scenario: Isolating auxiliary battery banks during cranking or fault conditions in start-stop and dual-battery architectures. IC Role / Device Role / Timing Role: Low-side main disconnect switch activated by system controller during overcurrent or thermal shutdown events. Use Value: 5.3 A continuous rating handles peak starter loads; SO-8 thermal performance sustains >2 A at 105°C ambient without derating. | Use Scenario: PWM dimming of high-brightness LED arrays in adaptive driving beam (ADB) headlamps with tight thermal constraints. IC Role / Device Role / Timing Role: High-frequency (≥1 kHz) current sink switch controlling LED string current with minimal EMI generation. Use Value: Fast switching (tr/tf = 6.2/7.8 ns) enables clean PWM edges; low Qg reduces gate driver losses at 5–10 V supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual N-channel automotive MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL22DN6LF5 | 30 V, 2.2 A per channel, 0.045 Ω RDS(on), PowerFLAT 5x6 package, lower current rating. | Optimized for space-constrained body electronics-not rated for engine bay thermal profiles. | Select when board area is critical and peak current stays below 2.5 A per channel. |
| ON Semiconductor NTMFS4C09NT1G | 30 V, 11.5 A per channel, 0.0095 Ω RDS(on), SO-8, higher current but larger die size and capacitance. | Better for high-current inverters; slower switching (Qg = 32 nC) increases driver losses in high-frequency apps. | Select when conduction loss dominates and switching frequency is <50 kHz. |
Compared with STL22DN6LF5 and NTMFS4C09NT1G, AUIRF7303Q balances mid-range current handling (5.3 A), fast switching (14–21 nC Qg), and full AEC-Q101 thermal compliance-making it optimal for cost-sensitive, thermally demanding 12 V power stages where both efficiency and ruggedness are required.
Availability
AUIRF7303Q is available at Aetrix Electronics and suitable for engine control units, HVAC motor drivers, and battery disconnect modules requiring stable component supply across automotive production lifecycles.
Supply support for AUIRF7303Q 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-with global manufacturing and qualification infrastructure.
AUIRF7303Q belongs to Infineon's automotive-qualified HEXFET® power MOSFET product line, engineered specifically for high-reliability 12 V vehicle subsystems requiring robustness against thermal cycling, voltage transients, and mechanical vibration.
FAQ
Is AUIRF7303Q suitable for high-frequency PWM applications above 100 kHz?
Yes-its 6.2 ns rise time, 7.8 ns fall time, and 14–21 nC total gate charge enable efficient operation up to 250 kHz in hard-switched DC-DC converters. However, gate driver strength must exceed 200 mA peak to achieve specified switching speeds without excessive overshoot.
What is the maximum allowable case temperature for continuous operation?
The maximum case temperature is not directly specified, but thermal design must ensure junction temperature remains ≤175°C. With RθJA = 62.5°C/W and PD = 2.4 W at TA = 25°C, sustained operation at TC > 105°C requires PCB copper area ≥4 cm² and airflow ≥1 m/s to avoid thermal derating.
Does AUIRF7303Q include integrated ESD protection?
Yes-it is qualified to AEC-Q101 with Human Body Model (HBM) Class H1A (±500 V), Machine Model (MM) Class M2 (±150 V), and Charged Device Model (CDM) Class C5 (±1500 V), meeting automotive ESD robustness requirements without external protection diodes.
Can the two channels be paralleled for higher current capacity?
No-channels share only the source terminal; drains and gates are fully isolated. Paralleling would require matched VGS(th) and RDS(on) tracking, which is not characterized or guaranteed. Use as independent switches or half-bridge pairs only.
AUIRF7303Q Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HEXFET®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- MOSFET (Metal Oxide)
- Configuration:
- 2 N-Channel (Dual)
- FET Feature:
- Logic Level Gate
- Drain to Source Voltage (Vdss):
- 30V
- Current - Continuous Drain (Id) @ 25°C:
- 5.3A
- Rds On (Max) @ Id, Vgs:
- 50mOhm @ 2.7A, 10V
- Vgs(th) (Max) @ Id:
- 3V @ 100µA
- Gate Charge (Qg) (Max) @ Vgs:
- 21nC @ 10V
- Input Capacitance (Ciss) (Max) @ Vds:
- 515pF @ 25V
- Power - Max:
- 2.4W
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AUIRF7303Q FAQ
1.How can I place an order for AUIRF7303Q through Aetrix?
Please submit a Request for Quotation (RFQ) for AUIRF7303Q 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 AUIRF7303Q reliable?
The price and inventory of AUIRF7303Q are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AUIRF7303Q is usually 5 days.
3.What payment methods are accepted for AUIRF7303Q?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AUIRF7303Q transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AUIRF7303Q?
AUIRF7303Q orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AUIRF7303Q 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 AUIRF7303Q?
For technical support, including AUIRF7303Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AUIRF7303Q requirements.
6.How does Aetrix verify that AUIRF7303Q is sourced from the original manufacturer or authorized distributors?
All AUIRF7303Q 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 AUIRF7303Q meets industry standards.
7.What is the process for return or replacement of AUIRF7303Q?
All AUIRF7303Q units undergo pre-shipment inspection (PSI). If there is an issue with AUIRF7303Q, 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 AUIRF7303Q part is unused and in its original packaging.
Return procedure for AUIRF7303Q:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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