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Infineon Technologies IRL3803SPBF
- Part No.:
- IRL3803SPBF
- Manufacturer:
- Infineon Technologies
- Category:
- FETs, MOSFETs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
IRL3803SPBF.pdf
- Description:
- MOSFET N-CH 30V 140A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:8,848
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Product details
Overview
IRL3803SPBF from Infineon Technologies is a 30 V, 140 A, 3.3 mΩ N-channel HEXFET® Power MOSFET in TO-263 (D²PAK) package, optimized for high-efficiency DC-DC conversion in server VRMs and POL regulators.
For engineers reviewing the IRL3803SPBF datasheet, IRL3803SPBF pinout, IRL3803SPBF application, or IRL3803SPBF equivalent, key selection criteria include RDS(on) at 4.5 V gate drive, peak pulsed drain current rating, thermal resistance (RθJC), and avalanche energy capability.
Technical Context
This logic-level MOSFET features trench-gate technology enabling low on-resistance with gate threshold voltage (VGS(th)) of 1.0–2.0 V and guaranteed turn-on at 4.5 V. Its design supports synchronous rectification in buck converters with minimal conduction loss.
The device integrates 100% UIS-tested ruggedness and specified single-pulse avalanche energy (EAS) of 390 mJ, supporting reliable operation under transient overcurrent and inductive switching stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 30 V - Maximum drain-source blocking voltage for 12 V input rail applications |
| RDS(on) @ VGS = 4.5 V | 3.3 mΩ - Enables <1 W conduction loss at 140 A DC in high-current POL stages |
| ID (continuous) | 140 A - Rated for sustained current in thermally constrained PCB layouts |
| RθJC | 0.7 °C/W - Supports >100 W power dissipation with standard heatsinking on D²PAK exposed pad |
| EAS | 390 mJ - Withstands inductive turn-off transients in synchronous buck topologies |
| Qg | 85 nC - Optimized for fast switching with moderate gate driver strength (e.g., IR35201) |
Pinout & Package
Package: TO-263 (D²PAK), surface-mount, with exposed drain pad for thermal and electrical connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Gate (G) | Control terminal | Receives PWM signal; low input capacitance enables fast edge rates with standard drivers |
| Drain (D) | Power output terminal | Connected to exposed copper pad; carries full load current and serves as primary thermal path |
| Source (S) | Reference/return terminal | Common node for gate drive return and current sensing; low-inductance layout critical for stability |
Key Features
| Feature | Design Value |
|---|---|
| Logic-level gate drive | Guaranteed RDS(on) ≤ 4.5 mΩ at VGS = 4.5 V - eliminates need for level-shifting gate drivers in 5 V or 3.3 V control systems |
| 100% UIS tested | Every unit validated for unclamped inductive switching - ensures robustness in hard-switched DC-DC stages |
| Low Qgd/Qg ratio | 0.22 - reduces Miller-induced shoot-through risk and improves controllability during hard commutation |
| Enhanced dV/dt immunity | Rated for 50 V/ns - suppresses false turn-on in high-speed, high-noise POL environments |
Applications
| Server Voltage Regulator Modules | Telecom DC-DC Converters |
|---|---|
Use Scenario: High-density 12 V-to-1 V VRM supplying CPU/GPU cores in dual-socket servers. IC Role / Device Role / Timing Role: Synchronous high-side switch in multiphase buck converter, operating at 300–600 kHz. Use Value: 3.3 mΩ RDS(on) minimizes conduction loss at 100+ A per phase, directly improving system efficiency by ≥0.5% at full load. | Use Scenario: Intermediate bus converter (48 V-to-12 V) in 5G base station power shelves. IC Role / Device Role / Timing Role: Primary-side switch in phase-shifted full-bridge topology with ZVS operation. Use Value: Low Qg (85 nC) and rugged UIS rating enable reliable soft-switching across wide load and temperature ranges. |
| Industrial Motor Drives | High-Current LED Drivers |
Use Scenario: Half-bridge inverter stage for 24 V BLDC motor control in factory automation actuators. IC Role / Device Role / Timing Role: Low-side switching element handling continuous 80 A with PWM frequencies up to 20 kHz. Use Value: RθJC = 0.7 °C/W allows direct mounting to aluminum chassis, eliminating discrete heatsinks and reducing BOM cost. | Use Scenario: Constant-current switch in multi-string 48 V LED lighting systems for warehouse illumination. IC Role / Device Role / Timing Role: PWM-controlled current regulator in high-side configuration with analog dimming feedback. Use Value: Tight VGS(th) distribution (1.0–2.0 V) ensures consistent turn-on timing across parallel strings, minimizing current imbalance. |
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 |
|---|---|---|---|
| IRL3803PBF | TO-220 package; RθJC = 1.0 °C/W; same RDS(on), VDS, and ID | Lower power density; requires through-hole assembly and larger heatsink footprint | Select when board space permits through-hole mounting and thermal mass is available |
| IRF3803PBF | Standard-level gate (VGS(th) = 2.0–4.0 V); higher RDS(on) = 4.5 mΩ @ 10 V | Requires 10 V gate drive; unsuitable for 3.3 V/5 V logic control without driver boost | Select only if existing 10 V gate driver infrastructure is in place and efficiency margin allows +0.3 W conduction loss |
Compared with IRL3803PBF and IRF3803PBF, the IRL3803SPBF delivers superior thermal performance in surface-mount designs and enables direct logic-level drive-critical for compact, high-efficiency POL converters where layout area and gate drive simplicity are constrained.
Availability
IRL3803SPBF is available at Aetrix Electronics and suitable for server VRMs, telecom DC-DC converters, and industrial motor drives requiring stable component supply and long-term production continuity.
Supply support for IRL3803SPBF 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, sensor, and automotive ICs, with leadership in silicon and wide-bandgap power devices.
The IRL3803SPBF belongs to Infineon's HEXFET® logic-level MOSFET product line, engineered specifically for high-current, low-voltage DC-DC conversion where gate drive simplicity and thermal efficiency are critical.
FAQ
What is the maximum junction temperature for continuous operation?
The IRL3803SPBF has a rated maximum junction temperature (TJ) of 175 °C. Continuous operation at this limit requires thermal design ensuring case temperature remains ≤110 °C under worst-case ambient and airflow conditions, verified via IR thermography or thermal simulation using the published RθJC = 0.7 °C/W and RθCA values.
Is the IRL3803SPBF RoHS-compliant and lead-free?
Yes, the IRL3803SPBF is RoHS-compliant and lead-free per EU Directive 2011/65/EU. The "PbF" suffix explicitly denotes lead-free packaging, and the device meets JEDEC J-STD-020 moisture sensitivity level (MSL) 1 requirements for unlimited floor life at ≤30 °C/85% RH.
Can it be used in parallel configurations?
Yes, the IRL3803SPBF supports paralleling due to its positive temperature coefficient of RDS(on). For stable current sharing, use matched gate resistors (≤1 Ω), symmetrical PCB layout with equal trace lengths, and ensure gate drive signals arrive within ≤5 ns skew. Derate total current by 15% versus sum of individual ratings.
Does it require a gate resistor for EMI suppression?
A gate resistor (typically 2.2–10 Ω) is recommended to dampen ringing caused by parasitic Lg-Ciss resonance and reduce high-frequency EMI. Values above 10 Ω increase switching losses; below 2.2 Ω may compromise noise immunity. Layout optimization-short gate traces and local decoupling-is equally critical.
IRL3803SPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HEXFET®
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 30 V
- Current - Continuous Drain (Id) @ 25°C:
- 140A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 6mOhm @ 71A, 10V
- Vgs(th) (Max) @ Id:
- 1V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 140 nC @ 4.5 V
- Vgs (Max):
- ±16V
- Input Capacitance (Ciss) (Max) @ Vds:
- 5000 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 3.8W (Ta), 200W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
IRL3803SPBF FAQ
1.How can I place an order for IRL3803SPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IRL3803SPBF 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 IRL3803SPBF reliable?
The price and inventory of IRL3803SPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRL3803SPBF is usually 5 days.
3.What payment methods are accepted for IRL3803SPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRL3803SPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRL3803SPBF?
IRL3803SPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRL3803SPBF 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 IRL3803SPBF?
For technical support, including IRL3803SPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRL3803SPBF requirements.
6.How does Aetrix verify that IRL3803SPBF is sourced from the original manufacturer or authorized distributors?
All IRL3803SPBF 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 IRL3803SPBF meets industry standards.
7.What is the process for return or replacement of IRL3803SPBF?
All IRL3803SPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRL3803SPBF, 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 IRL3803SPBF part is unused and in its original packaging.
Return procedure for IRL3803SPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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