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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Infineon Technologies IRL3803VPBF

Name: IRL3803VPBF
Brand: Infineon Technologies
SKU: IRL3803VPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRL3803VPBF

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: IRL3803VPBF.pdf

Description:: MOSFET N-CH 30V 140A TO220AB

Quantity:: RFQ Add To RFQ list

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Inventory:7,507

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Product details

Overview

IRL3803VPBF from Infineon Technologies (formerly International Rectifier) is a 30V, 140A N-channel enhancement-mode HEXFET® Power MOSFET in TO-220AB package, featuring 5.5 mΩ R_DS(on) at V_GS = 10 V, 175°C max junction temperature, and fully avalanche-rated operation. It serves as a high-current synchronous rectifier or primary-side switch in DC-DC converters, motor drives, and power supply OR-ing circuits.

For engineers reviewing the IRL3803VPBF datasheet, IRL3803VPBF pinout, IRL3803VPBF application, or IRL3803VPBF equivalent, key selection criteria include its low R_DS(on), fast switching (t_r = 180 ns, t_f = 37 ns), robust 1560 mJ single-pulse avalanche energy, and thermal resistance of 0.74°C/W (junction-to-case).

Technical Context

This device employs advanced planar HEXFET processing to achieve ultra-low on-resistance per die area while maintaining rugged unclamped inductive switching capability. Its gate threshold voltage (1.0–2.0 V) enables direct logic-level drive from 3.3 V or 5 V controllers, and its dynamic dv/dt rating supports stable operation in noisy high-speed switching environments.

The integrated body diode exhibits 1.2 V forward voltage at 71 A and 25°C, with reverse recovery time (t_rr) of 52–78 ns and Q_rr of 91–140 nC - critical parameters for synchronous rectification efficiency and EMI control in buck and half-bridge topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	30 V - Maximum drain-source blocking voltage; defines safe operating range in 24 V nominal bus applications.
R_DS(on)	5.5 mΩ @ V_GS = 10 V - Enables <1 W conduction loss at 140 A, reducing heatsink requirements in high-current power stages.
I_D (T_C = 25°C)	140 A - Continuous drain current rating at case temperature 25°C; limited by package thermal capacity, not silicon.
E_AS	1560 mJ - Single-pulse avalanche energy; allows reliable operation during inductive turn-off transients without external snubbers.
Q_g	76 nC - Total gate charge; determines driver strength requirement and switching loss trade-off at 100–500 kHz frequencies.
R_θJC	0.74 °C/W - Junction-to-case thermal resistance; enables precise junction temperature estimation using measured case temperature.
t_r/t_f	180/37 ns - Rise/fall times at I_D = 71 A, V_DD = 15 V; defines minimum practical switching period and associated switching loss.

Pinout & Package

IRL3803VPBF uses the standard TO-220AB package with isolated tab (drain-connected). The package features low thermal resistance, mechanical mounting compatibility with industry-standard heatsinks, and is not suitable for surface-mount assembly.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main current path output / heat dissipation surface	Electrically connected to drain; must be electrically isolated from heatsink unless circuit design requires common-drain configuration.
Source	Reference node for gate drive and current return path	Serves as power ground reference for gate driver ICs; internal source inductance (L_S = 7.5 nH) affects high-di/dt ringing.
Gate	Control terminal for channel conduction	High-impedance input requiring low-inductance layout; Miller charge (Q_gd = 35 nC) dominates turn-off timing and dV/dt immunity.

Key Features

Feature	Design Value
Logic-level gate drive	Operates fully enhanced with V_GS ≥ 4.5 V, enabling direct interface with microcontrollers and low-voltage PWM controllers.
Ultra-low R_DS(on)	5.5 mΩ at 10 V drive reduces conduction losses by >40% vs. legacy 30 V MOSFETs in 12–24 V systems.
Full avalanche rating	Rated for repetitive and single-pulse avalanche events up to 1560 mJ, eliminating need for external clamping in inductive load switching.
Lead-free construction	RoHS-compliant Pb-free plating (indicated by "PbF" suffix); qualified for industrial temperature range (−55°C to +175°C).
Fast body diode	Reverse recovery time ≤78 ns and Q_rr ≤140 nC support efficient synchronous rectification in high-frequency DC-DC converters.

Applications

DC-DC Synchronous Rectifier

Motor Drive Half-Bridge

Use Scenario: Secondary-side switch in 12 V–24 V input buck converters delivering up to 100 A output.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier replacing Schottky diode to reduce conduction loss and improve efficiency above 300 kHz.

Use Value: Achieves >95% efficiency at full load due to 5.5 mΩ R_DS(on) and low Q_rr-driven EMI reduction.

Use Scenario: High-current leg in brushed DC motor H-bridge driving 24 V, 50 A loads in industrial actuators.

IC Role / Device Role / Timing Role: N-channel high-side or low-side switch controlled by isolated gate driver with bootstrap or floating supply.

Use Value: Withstands 71 A avalanche current and 1560 mJ energy during motor stall or reversal transients.

OR-ing Controller Switch

Hot-Swap Power Path

Use Scenario: Redundant 24 V power rail combining in telecom shelf or server backplane with automatic fault isolation.

IC Role / Device Role / Timing Role: Forward-conducting MOSFET in ideal diode configuration, controlled by dedicated OR-ing controller IC.

Use Value: 1.2 V body diode drop eliminated; system insertion loss reduced to <30 mV at 100 A via low R_DS(on).

Use Scenario: Inrush-limited 24 V power distribution to hot-pluggable modules in industrial PLC backplanes.

IC Role / Device Role / Timing Role: Main pass element in active hot-swap controller circuit, handling steady-state load and fault current limiting.

Use Value: Supports 140 A continuous current with thermal derating; avalanche rating protects against cable-disconnect transients.

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
IRF3803PBF	Higher R_DS(on) (6.5 mΩ), same V_DSS/I_D, non-lead-free.	Same footprint but higher conduction loss; less suitable for thermally constrained 100+ A designs.	Select only if RoHS exemption applies and thermal margin exceeds 10°C.
STP36NF3LL	30 V, 36 A rated (not 140 A); lower Q_g (42 nC) but higher R_DS(on) (11 mΩ).	TO-220 package but limited to ~40 A continuous; unsuitable for high-current OR-ing or motor drive.	Only viable for low-power replacements where peak current <45 A and gate drive is highly constrained.

Compared with IRL3803VPBF, IRF3803PBF trades lead-free compliance for marginal R_DS(on) increase, while STP36NF3LL offers lower gate charge but cannot scale to 140 A continuous operation - making IRL3803VPBF uniquely suited for high-current, logic-level, industrial-grade switching.

Availability

IRL3803VPBF is available at Aetrix Electronics and suitable for DC-DC converters, motor drives, OR-ing circuits, and hot-swap power distribution requiring stable component supply across extended industrial temperature ranges and long production lifecycles.

Supply support for IRL3803VPBF 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 acquired International Rectifier in 2015 and continues to manufacture and qualify its HEXFET® power MOSFET portfolio for industrial reliability and performance.

The HEXFET® product line targets high-efficiency, high-reliability power conversion - emphasizing low R_DS(on), fast switching, and rugged avalanche capability for demanding 12–48 V systems.

FAQ

Is IRL3803VPBF suitable for surface-mount assembly?

No. The TO-220AB package is explicitly not recommended for surface-mount applications per the datasheet. It requires through-hole mounting with mechanical screw attachment to a heatsink. Surface-mount alternatives would require different package types such as D²PAK or LFPAK, which are not pin-compatible.

What is the maximum continuous drain current at 100°C case temperature?

The datasheet specifies 110 A continuous drain current at T_C = 100°C and V_GS = 10 V. This reflects thermal derating from the 140 A rating at 25°C, based on the device's 1.4 W/°C linear derating factor and 200 W power dissipation limit at T_C = 25°C.

Does IRL3803VPBF have a built-in ESD protection diode on the gate?

No. The datasheet does not specify integrated gate ESD protection. Standard handling precautions apply: use grounded wrist straps, conductive foam, and avoid floating gate connections during PCB handling or rework. Gate oxide withstands ±16 V V_GS, but transient ESD events beyond this require external protection.

Can IRL3803VPBF replace IRL3803 in existing designs?

Yes - IRL3803VPBF is the lead-free (PbF) version of IRL3803, with identical electrical specifications, thermal ratings, and mechanical outline. The "V" denotes tape-and-reel packaging; "PbF" confirms RoHS compliance. No layout or drive circuit changes are required for drop-in replacement in new production.

IRL3803VPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

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:: 5.5mOhm @ 71A, 10V

Vgs(th) (Max) @ Id:: 1V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 76 nC @ 4.5 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 3720 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 200W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AB

IRL3803VPBF FAQ

1.How can I place an order for IRL3803VPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRL3803VPBF 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 IRL3803VPBF reliable?

The price and inventory of IRL3803VPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRL3803VPBF is usually 5 days.

3.What payment methods are accepted for IRL3803VPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRL3803VPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRL3803VPBF?

IRL3803VPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRL3803VPBF 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 IRL3803VPBF?

For technical support, including IRL3803VPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRL3803VPBF requirements.

6.How does Aetrix verify that IRL3803VPBF is sourced from the original manufacturer or authorized distributors?

All IRL3803VPBF 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 IRL3803VPBF meets industry standards.

7.What is the process for return or replacement of IRL3803VPBF?

All IRL3803VPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRL3803VPBF, 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 IRL3803VPBF part is unused and in its original packaging.

Return procedure for IRL3803VPBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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