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

Infineon Technologies IRLR8721TRPBF-1

Name: IRLR8721TRPBF-1
Brand: Infineon Technologies
SKU: IRLR8721TRPBF-1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRLR8721TRPBF-1

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: IRLR8721TRPBF-1.pdf

Description:: MOSFET N-CH 30V 65A DPAK

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Product details

Overview

IRLR8721TRPBF-1 from Infineon Technologies is a 30 V, 65 A N-channel D-Pak HEXFET Power MOSFET with 6.3 mΩ typical R_DS(on) at V_GS = 10 V, 8.5 nC total gate charge, and 17 ns typical reverse recovery time for its integrated body diode - used in high-efficiency DC-DC synchronous rectification and motor drive half-bridge legs.

For engineers reviewing the IRLR8721TRPBF-1 datasheet, IRLR8721TRPBF-1 pinout, IRLR8721TRPBF-1 application, or IRLR8721TRPBF-1 equivalent, key selection criteria include R_DS(on) at 4.5 V and 10 V, Q_g, diode Q_rr/t_rr, SOA limits at T_C = 100 °C, and D-Pak thermal resistance (R_θJC = 2.3 °C/W).

Technical Context

This MOSFET employs planar silicon process technology optimized for low conduction loss and fast switching in 12 V–24 V industrial and automotive power stages. Its gate threshold voltage (1.35–2.35 V) enables robust 4.5 V logic-level drive, while the 110 pF Crss and 350 pF Coss support stable operation in hard-switched buck converters up to 500 kHz.

The integrated body diode exhibits 24–36 nC Q_rr and 17–26 ns t_rr under 20 A, 15 V, di/dt = 300 A/μs conditions - critical for minimizing commutation loss in synchronous rectifiers and H-bridge motor control where shoot-through immunity and diode softness matter.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - supports 24 V nominal bus systems with 25 % overvoltage margin
R_DS(on) max @ V_GS = 10 V	8.4 mΩ - limits conduction loss to ≤1.1 W at 65 A continuous (T_C = 25 °C)
Q_g typical	8.5 nC - determines gate driver current requirement (~1.7 A peak for 5 ns rise time)
t_rr typical	17 ns - enables clean turn-on of complementary switch without excessive voltage overshoot
R_θJC	2.3 °C/W - allows 65 W dissipation with ≤150 °C junction rise above 25 °C case
I_D @ T_C = 100 °C	46 A - defines usable current in thermally constrained PCB layouts
V_GS(th)	1.35–2.35 V - ensures reliable turn-on with 3.3 V or 5 V microcontroller GPIO

Pinout & Package

D-Pak (TO-252AA) package with exposed drain pad for low thermal resistance and mechanical stability on PCB. Standard 3-pin surface-mount configuration.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (G)	Gate	Control terminal; requires <2.3 Ω series gate resistor to limit ringing and ensure 8.5 nC charge/discharge within 10 ns
Pin 2 (S)	Source	Reference node for gate drive; tied to power ground plane to minimize common-source inductance
Pin 3 (D)	Drain	Main current path; connected to large copper pour for heat spreading and low-inductance high-side routing

Key Features

Feature	Design Value
Logic-level gate drive compatibility	Operates fully enhanced at V_GS ≥ 4.5 V - eliminates need for gate boosters in 5 V MCU-controlled SMPS
Low Q_gd/Q_g ratio	3.4 nC / 8.5 nC = 0.4 - improves Miller immunity and reduces risk of false turn-on during dV/dt transients
MSL1 moisture sensitivity	Rated for unlimited floor life before reflow - simplifies SMT line handling and inventory management
Rugged avalanche rating	93 mJ single-pulse E_AS at T_J = 25 °C - withstands unclamped inductive switching in motor gate drivers

Applications

DC-DC Synchronous Rectifier

Automotive Body Control Module

Use Scenario: Secondary-side switch in 12 V input, 3.3 V/5 V output buck converter for infotainment head unit power rail.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier replacing Schottky diode to reduce conduction loss by >40 % at 20 A load.

Use Value: Achieves >94 % efficiency at full load due to 6.3 mΩ R_DS(on) and 17 ns t_rr minimizing dead-time losses.

Use Scenario: High-current load switch for HVAC blower motor control in 12 V vehicle electrical system.

IC Role / Device Role / Timing Role: N-channel high-side switch driven via charge pump, managing 30 A continuous motor current.

Use Value: Withstands 100 °C case temperature and delivers 46 A derated current without thermal shutdown.

Industrial PLC Output Stage

Power Tool Battery Pack Protection

Use Scenario: Solid-state relay replacement in 24 V digital output module driving solenoid valves.

IC Role / Device Role / Timing Role: Low-side switching element with fast turn-off (<16 ns combined td(off)+tf) to meet IEC 61000-4-4 surge immunity timing.

Use Value: 93 mJ E_AS rating absorbs inductive kickback energy without failure during valve de-energization.

Use Scenario: Cell-balancing and discharge path switch in 18 V Li-ion battery pack for cordless drill.

IC Role / Device Role / Timing Role: Discrete load switch enabling controlled pack discharge during protection events.

Use Value: 260 A pulsed ID capability handles short-circuit currents during fault clearing without bond wire fusing.

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
IRLR8726PbF	R_DS(on) max = 5.8 mΩ @ 10 V; Q_g = 10.5 nC; same D-Pak package	Lower conduction loss but higher gate drive demand; better for <300 kHz fixed-frequency designs	Select when priority is minimizing I²R loss over switching loss and gate drive capability permits higher Q_g
STP80NF55-08	R_DS(on) max = 8.5 mΩ @ 10 V; TO-220 package; R_θJA = 60 °C/W (vs. 50 °C/W for D-Pak)	Requires heatsink for >20 A operation; not surface-mount compatible	Choose only if through-hole assembly is mandated and thermal budget allows higher ambient rise

Compared with IRLR8726PbF and STP80NF55-08, the IRLR8721TRPBF-1 offers optimal balance of low gate charge, industry-standard D-Pak footprint, and proven 100 °C continuous operation - making it preferred for space-constrained, high-reliability 24 V embedded power stages.

Availability

IRLR8721TRPBF-1 is available at Aetrix Electronics and suitable for DC-DC converters, motor drives, PLC outputs, and battery protection circuits requiring stable component supply and long-term industrial lifecycle support.

Supply support for IRLR8721TRPBF-1 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 and discrete devices.

This part belongs to the HEXFET® Power MOSFET product line, engineered for high-current, low-voltage switching in automotive, industrial, and consumer power conversion systems where reliability and thermal performance are critical.

FAQ

Is IRLR8721TRPBF-1 suitable for 3.3 V microcontroller gate drive?

Yes - its gate threshold voltage range (1.35–2.35 V) and guaranteed enhancement at V_GS = 4.5 V make it compatible with 3.3 V logic when paired with a gate driver that provides boosted voltage or sufficient current to overcome Miller plateau. Direct 3.3 V MCU GPIO drive is marginal and not recommended for full 65 A operation.

What is the maximum continuous drain current at 85 °C case temperature?

Based on linear derating from 65 A at 25 °C and 46 A at 100 °C, the maximum continuous drain current at T_C = 85 °C is approximately 52 A. This assumes proper PCB copper area (≥10 cm² 2 oz Cu) and still-air convection cooling per JEDEC standards.

Does this MOSFET have avalanche energy rating, and how is it tested?

Yes - it is rated for 93 mJ single-pulse avalanche energy (E_AS) at T_J = 25 °C, tested per JEDEC JESD24-11 using unclamped inductive switching with L = 0.5 mH, I_AS = 1.4 A, and V_(BR)DSS clamping. Repetitive avalanche is not rated; design must avoid repeated unclamped events.

Can the body diode be used for freewheeling in a buck converter?

Yes - the body diode has characterized Q_rr (24–36 nC) and t_rr (17–26 ns), enabling use in synchronous rectification. However, its forward voltage (≤1.0 V at 20 A) is higher than Schottky alternatives, so efficiency gain depends on duty cycle and switching frequency relative to conduction loss trade-off.

IRLR8721TRPBF-1 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):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 65A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 8.4mOhm @ 25A, 10V

Vgs(th) (Max) @ Id:: 2.35V @ 25µA

Gate Charge (Qg) (Max) @ Vgs:: 13 nC @ 4.5 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1030 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 65W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-252AA (DPAK)

IRLR8721TRPBF-1 FAQ

1.How can I place an order for IRLR8721TRPBF-1 through Aetrix?

Please submit a Request for Quotation (RFQ) for IRLR8721TRPBF-1 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 IRLR8721TRPBF-1 reliable?

The price and inventory of IRLR8721TRPBF-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRLR8721TRPBF-1 is usually 5 days.

3.What payment methods are accepted for IRLR8721TRPBF-1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRLR8721TRPBF-1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRLR8721TRPBF-1?

IRLR8721TRPBF-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRLR8721TRPBF-1 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 IRLR8721TRPBF-1?

For technical support, including IRLR8721TRPBF-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRLR8721TRPBF-1 requirements.

6.How does Aetrix verify that IRLR8721TRPBF-1 is sourced from the original manufacturer or authorized distributors?

All IRLR8721TRPBF-1 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 IRLR8721TRPBF-1 meets industry standards.

7.What is the process for return or replacement of IRLR8721TRPBF-1?

All IRLR8721TRPBF-1 units undergo pre-shipment inspection (PSI). If there is an issue with IRLR8721TRPBF-1, 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 IRLR8721TRPBF-1 part is unused and in its original packaging.

Return procedure for IRLR8721TRPBF-1:

1.Submit a request within 90 days.

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

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