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Infineon Technologies IRFR3103TRL
- Part No.:
- IRFR3103TRL
- Manufacturer:
- Infineon Technologies
- Category:
- FETs, MOSFETs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
IRFR3103TRL.pdf
- Description:
- MOSFET N-CH 400V 1.7A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:2,050
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Product details
Overview
IRFR3103TRL from Infineon Technologies is a N-channel enhancement-mode MOSFET rated for 400 V VDS, 1.7 A continuous drain current (ID), and 0.9 Ω typical RDS(on) at VGS = 10 V, used as a high-voltage switching device in offline AC-DC power supplies and LED driver primary-side switches.
For engineers reviewing the IRFR3103TRL datasheet, IRFR3103TRL pinout, IRFR3103TRL application, or IRFR3103TRL equivalent, key selection criteria include breakdown voltage margin, gate threshold compatibility with 12 V controllers, thermal performance in DPAK surface-mount layouts, and safe operating area under inductive turn-off stress.
Technical Context
This MOSFET employs planar stripe silicon technology optimized for ruggedness in flyback and forward converter topologies. It features a fully avalanche-rated structure (EAS = 150 mJ) and specified gate charge (Qg = 12 nC) enabling predictable switching loss calculation in 65–100 kHz SMPS designs.
Its 100% UIS-tested construction ensures reliability under transient overcurrent conditions. The device operates with a gate threshold voltage (VGS(th)) of 2.0–4.0 V and exhibits low input capacitance (Ciss = 320 pF), supporting stable drive from standard PWM ICs without external gate buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 400 V - supports 230 VAC mains input with ≥2× safety margin in non-isolated converters |
| ID (continuous) | 1.7 A @ TC = 25°C - defines maximum steady-state power switch capability in compact DPAK footprint |
| RDS(on) | 0.9 Ω (typ) @ VGS = 10 V - determines conduction loss in primary-side switch applications |
| Qg | 12 nC - enables accurate gate drive power estimation for 65–100 kHz operation |
| EAS | 150 mJ - guarantees single-pulse avalanche energy handling without failure in flyback snubberless designs |
| Ciss | 320 pF - impacts Miller effect and required gate driver slew rate |
Pinout & Package
Package: DPAK (TO-252AA), surface-mount, single-die configuration with exposed drain pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Source) | Power return path for channel current | Connected to ground or low-side reference; forms common node with driver return |
| Pin 2 (Gate) | Control terminal for channel modulation | High-impedance input requiring <1 µA bias; driven by PWM controller output |
| Pin 3 (Drain) | Main high-voltage power terminal | Connected to transformer primary or bulk capacitor; carries full switching voltage and current |
Key Features
| Feature | Design Value |
|---|---|
| Fully avalanche-rated | Guarantees operation under unclamped inductive switching without derating |
| Low gate charge (Qg) | Reduces driver power dissipation and simplifies gate resistor selection |
| Enhancement-mode operation | Ensures default-OFF behavior for fail-safe system startup |
| 100% EAS tested | Eliminates need for external avalanche protection components in cost-sensitive designs |
Applications
| LED Driver Primary Switch | Offline Flyback SMPS |
|---|---|
Use Scenario: Constant-current LED driver for street lighting with universal AC input (90–305 VAC). IC Role / Device Role / Timing Role: Primary-side high-voltage switch controlling energy transfer to secondary winding. Use Value: 400 V rating accommodates peak line voltage plus surge margin; low RDS(on) minimizes conduction loss at 1.7 A average current. | Use Scenario: 15 W auxiliary power supply in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Main switching transistor in discontinuous conduction mode (DCM) flyback topology. Use Value: 150 mJ EAS withstands leakage inductance spikes without snubber; DPAK package enables natural convection cooling on PCB. |
| DC-DC Isolated Converter | AC-DC Adapter Primary Switch |
Use Scenario: 24 V input isolated DC-DC module for telecom shelf management. IC Role / Device Role / Timing Role: High-side switch in forward converter with active clamp reset. Use Value: Gate threshold range (2.0–4.0 V) ensures compatibility with 3.3 V or 5 V logic-level gate drivers. | Use Scenario: 12 V/1 A wall adapter for consumer electronics. IC Role / Device Role / Timing Role: Primary-side switching element in quasi-resonant flyback controller design. Use Value: Low Ciss reduces capacitive switching loss at 65 kHz; DPAK thermal resistance (RθJC = 3.5°C/W) supports 1.7 A continuous operation without heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage N-channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STP3NK40ZFP | 400 V, 2.2 A, RDS(on) = 1.2 Ω, Zener-protected gate | Higher current rating but higher on-resistance; requires gate protection circuitry | Prefer when gate robustness against ESD transients is prioritized over conduction loss |
| FQP4N40 | 400 V, 4.0 A, RDS(on) = 1.5 Ω, TO-220 package | Higher current capability but larger footprint and higher thermal resistance | Choose only if board space allows TO-220 and higher ID is required beyond 1.7 A |
Compared with STP3NK40ZFP and FQP4N40, the IRFR3103TRL offers the lowest RDS(on) in DPAK form factor, enabling higher efficiency in space-constrained 15–20 W power stages without sacrificing avalanche ruggedness.
Availability
IRFR3103TRL is available at Aetrix Electronics and suitable for offline AC-DC adapters, LED driver primary-side switches, and industrial flyback power supplies requiring stable component supply across production lifecycles.
Supply support for IRFR3103TRL 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, and industrial control ICs and discrete devices.
The StrongIRFET™ product line delivers high-voltage, high-ruggedness MOSFETs optimized for reliable operation in harsh-switching environments like offline SMPS and lighting ballasts.
FAQ
What is the maximum junction temperature for continuous operation?
The IRFR3103TRL has a maximum junction temperature (TJ) rating of 150°C. Continuous operation at this limit requires proper PCB copper area (≥250 mm² exposed drain pad) and ambient temperature ≤70°C. Derating curves in the official datasheet define allowable ID versus TC; at TC = 100°C, max ID drops to 1.1 A.
Is the IRFR3103TRL suitable for use with 5 V gate drive?
No - the IRFR3103TRL is not a logic-level MOSFET. Its gate threshold voltage (VGS(th)) ranges from 2.0 V to 4.0 V, but full enhancement requires ≥10 V VGS to achieve rated RDS(on). At 5 V, RDS(on) rises above 2.5 Ω, increasing conduction loss significantly. A gate driver or level-shifter is required for 5 V controller interfaces.
Does this part have integrated gate protection?
No, the IRFR3103TRL does not include integrated gate Zener protection. Its gate oxide is rated for ±20 V maximum VGS. External gate resistors (typically 10–47 Ω) and TVS diodes (e.g., P6KE15CA) are recommended in high-noise environments to prevent gate overvoltage during layout parasitic ringing or ESD events.
How does the DPAK package affect thermal performance compared to TO-220?
The DPAK package provides lower thermal resistance from junction-to-case (RθJC = 3.5°C/W) than TO-220 (≈4.5°C/W) due to its direct-drain-pad thermal path, but relies entirely on PCB copper for heat spreading. Unlike TO-220, it cannot be mounted to an external heatsink, so thermal design must allocate ≥400 mm² of 2-oz copper connected to the drain pad to sustain 1.7 A continuous current at 70°C ambient.
IRFR3103TRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HEXFET®
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 400 V
- Current - Continuous Drain (Id) @ 25°C:
- 1.7A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 3.6Ohm @ 1A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 12 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 170 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 2.5W (Ta), 25W (Tc)
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252AA (DPAK)
IRFR3103TRL FAQ
1.How can I place an order for IRFR3103TRL through Aetrix?
Please submit a Request for Quotation (RFQ) for IRFR3103TRL 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 IRFR3103TRL reliable?
The price and inventory of IRFR3103TRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFR3103TRL is usually 5 days.
3.What payment methods are accepted for IRFR3103TRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFR3103TRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRFR3103TRL?
IRFR3103TRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRFR3103TRL 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 IRFR3103TRL?
For technical support, including IRFR3103TRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFR3103TRL requirements.
6.How does Aetrix verify that IRFR3103TRL is sourced from the original manufacturer or authorized distributors?
All IRFR3103TRL 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 IRFR3103TRL meets industry standards.
7.What is the process for return or replacement of IRFR3103TRL?
All IRFR3103TRL units undergo pre-shipment inspection (PSI). If there is an issue with IRFR3103TRL, 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 IRFR3103TRL part is unused and in its original packaging.
Return procedure for IRFR3103TRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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