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Infineon Technologies IRFL4310TR
- Part No.:
- IRFL4310TR
- Manufacturer:
- Infineon Technologies
- Category:
- FETs, MOSFETs
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
IRFL4310TR.pdf
- Description:
- MOSFET N-CH 100V 1.6A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:5,199
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Product details
Overview
IRFL4310TR from International Rectifier is a surface-mount N-channel enhancement-mode HEXFET® Power MOSFET in SOT-223 package, rated for 100V VDSS, 0.20Ω RDS(on) at VGS = 10V and ID = 1.6A, with 1.0W power dissipation on FR-4 PCB - used as a low-side switch in DC-DC converters, LED drivers, and load management circuits.
For engineers reviewing the IRFL4310TR datasheet, IRFL4310TR pinout, IRFL4310TR application, or IRFL4310TR equivalent, key selection criteria include its ultra-low on-resistance, fast switching (tr = 18ns), dynamic dv/dt rating (5.0 V/ns), rugged avalanche capability (EAS = 47 mJ), and thermal performance on standard PCB layouts.
Technical Context
This MOSFET employs fifth-generation HEXFET process technology to minimize conduction loss while maintaining high-speed switching integrity. Its body diode exhibits trr = 72–110 ns and Qrr = 210–320 nC under 100 A/µs di/dt, supporting synchronous rectification and flyback topologies.
The device features gate threshold voltage of 2.0–4.0 V, total gate charge of 17–25 nC, and input capacitance Ciss = 330 pF at VGS = 0V, enabling efficient drive with standard logic-level gate drivers without external level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 100 V - supports 48V industrial bus and 24V automotive supply rails with margin |
| RDS(on) | 0.20 Ω @ VGS = 10V, ID = 1.6A - enables <160 mW conduction loss at rated current |
| ID (continuous) | 1.6 A @ TA = 25°C on FR-4 - suitable for medium-current switching in space-constrained designs |
| PD | 1.0 W on FR-4 PCB - defines thermal limit without heatsink or copper pour |
| tr / tf | 18 ns / 20 ns - allows >1 MHz switching in hard-switched SMPS with low switching loss |
| EAS | 47 mJ - provides single-pulse avalanche robustness during inductive turn-off transients |
| Ciss | 330 pF - determines gate drive current requirement and Miller effect sensitivity |
Pinout & Package
SOT-223 (TO-261AA) package with exposed drain tab for enhanced thermal conduction; designed for vapor-phase, infrared, or wave soldering; compatible with automated pick-and-place systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Drain (Tab) | Main current path output terminal | Electrically connected to exposed metal tab - must be soldered to PCB copper for thermal and electrical continuity |
| Source | Reference node for gate control and current return | Connected internally to substrate; forms common reference for gate drive and load return path |
| Gate | Control electrode for channel modulation | High-impedance input requiring <25 nC total charge for full enhancement; sensitive to ESD |
| Drain (Pin 1) | Alternate drain connection (same node as tab) | Provides mechanical stability and redundant current path; electrically identical to tab |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low RDS(on) | 0.20 Ω enables minimal I²R loss in battery-powered and thermally limited applications |
| Dynamic dv/dt rating | 5.0 V/ns immunity prevents false turn-on during high-slew-rate noise events in motor drives |
| Fast switching speed | 7.8 ns td(on), 34 ns td(off) support high-frequency operation with reduced dead-time requirements |
| Easy paralleling | Positive temperature coefficient of RDS(on) ensures inherent current sharing across multiple devices |
| Advanced process technology | Fifth-generation HEXFET silicon delivers higher cell density and lower specific on-resistance than prior generations |
Applications
| DC-DC Buck Converter | LED Constant-Current Driver |
|---|---|
Use Scenario: Step-down regulation from 24V to 5V/3.3V in industrial IoT nodes with tight board area constraints. IC Role / Device Role: Low-side synchronous rectifier switch replacing Schottky diode to improve efficiency. Use Value: 0.20Ω RDS(on) reduces conduction loss by >60% vs. typical 0.5Ω discrete MOSFETs at 1.5A load. | Use Scenario: Constant-current dimming control for 12–24V LED strings in signage and architectural lighting. IC Role / Device Role: PWM-controlled current sink switch operating at 1–10 kHz. Use Value: Fast tr/tf minimizes PWM transition loss; 100V rating accommodates LED string voltage spikes. |
| Load Switch for 12V Systems | Protection Circuit in Automotive ECUs |
Use Scenario: Controlled power-up sequencing of peripheral modules in 12V embedded systems. IC Role / Device Role: High-side or low-side load switch with integrated overcurrent and thermal foldback. Use Value: 1.6A continuous rating and 13A pulsed capability support surge-tolerant hot-plug operation. | Use Scenario: Reverse-polarity and overvoltage protection in 12V automotive control units. IC Role / Device Role: Clamping and crowbar switch triggered by external supervisor IC. Use Value: 47 mJ single-pulse avalanche energy withstands load-dump transients per ISO 7637-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel low-voltage power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STP12NF06L | 60V VDSS, 0.15Ω RDS(on), TO-220 package | Limited to ≤60V systems; requires through-hole mounting and heatsink | Choose when higher current (12A) and lower RDS(on) outweigh SMT footprint and thermal integration needs |
| DMN2004LK-7 | 20V VDSS, 0.045Ω RDS(on), SOT-23 package | Not suitable for >20V rails; lower power handling (0.75W) | Prefer for 3.3V/5V logic-level switching where voltage margin and size are critical |
Compared with STP12NF06L and DMN2004LK-7, the IRFL4310TR uniquely balances 100V capability, SOT-223 surface-mount compatibility, and 1.0W PCB-limited power dissipation - making it optimal for mid-voltage industrial and automotive auxiliary loads where space and thermal design are constrained.
Availability
IRFL4310TR is available at Aetrix Electronics and suitable for DC-DC converters, LED drivers, load switches, and automotive protection circuits requiring stable component supply and long-term production continuity.
Supply support for IRFL4310TR 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
International Rectifier (now part of Infineon Technologies) was a pioneer in power semiconductor innovation, specializing in high-efficiency MOSFETs, IGBTs, and driver ICs for industrial, automotive, and computing markets.
The HEXFET® Power MOSFET product line - including the IRFL4310TR - was engineered for high-reliability, surface-mount power switching in space- and thermally-constrained applications, emphasizing low RDS(on), fast switching, and rugged transient tolerance.
FAQ
What is the maximum junction temperature for reliable operation of the IRFL4310TR?
The IRFL4310TR has a specified junction-to-ambient thermal resistance of 93°C/W on FR-4 PCB (minimum footprint). With 1.0W power dissipation and 25°C ambient, junction temperature reaches 118°C - well within the -55°C to +150°C rated range. Derating begins above 25°C at 8.3 mW/°C.
Can the IRFL4310TR be driven directly by a 3.3V microcontroller GPIO?
No - its gate threshold voltage is 2.0–4.0V, and full enhancement requires ≥10V VGS to achieve 0.20Ω RDS(on). At 3.3V, RDS(on) exceeds 1.5Ω, causing excessive heating. A dedicated gate driver or level shifter is required for logic-level control.
Is the SOT-223 drain tab electrically isolated from the PCB ground plane?
No - the exposed drain tab is electrically connected to the Drain terminal (Pin 1) and must be soldered to a copper pour tied to the circuit's drain node. It is not insulated; isolation requires a thermally conductive but electrically insulating pad or standoff, which degrades thermal performance.
Does the IRFL4310TR have built-in ESD protection on the gate?
No - the device lacks integrated gate protection diodes. Gate-to-source breakdown is ±20V, and gate leakage is specified up to ±20V. External 10–100Ω series gate resistor and TVS clamp (e.g., 12V unidirectional) are recommended to prevent ESD damage during handling and PCB assembly.
IRFL4310TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 100 V
- Current - Continuous Drain (Id) @ 25°C:
- 1.6A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- -
- Rds On (Max) @ Id, Vgs:
- 200mOhm @ 1.6A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 25 nC @ 10 V
- Vgs (Max):
- -
- Input Capacitance (Ciss) (Max) @ Vds:
- 330 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
IRFL4310TR FAQ
1.How can I place an order for IRFL4310TR through Aetrix?
Please submit a Request for Quotation (RFQ) for IRFL4310TR 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 IRFL4310TR reliable?
The price and inventory of IRFL4310TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFL4310TR is usually 5 days.
3.What payment methods are accepted for IRFL4310TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFL4310TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRFL4310TR?
IRFL4310TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRFL4310TR 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 IRFL4310TR?
For technical support, including IRFL4310TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFL4310TR requirements.
6.How does Aetrix verify that IRFL4310TR is sourced from the original manufacturer or authorized distributors?
All IRFL4310TR 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 IRFL4310TR meets industry standards.
7.What is the process for return or replacement of IRFL4310TR?
All IRFL4310TR units undergo pre-shipment inspection (PSI). If there is an issue with IRFL4310TR, 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 IRFL4310TR part is unused and in its original packaging.
Return procedure for IRFL4310TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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