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

Infineon Technologies IRFS4615PBF

Name: IRFS4615PBF
Brand: Infineon Technologies
SKU: IRFS4615PBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFS4615PBF

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: IRFS4615PBF.pdf

Description:: MOSFET N-CH 150V 33A D2PAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRFS4615PBF from Infineon Technologies (formerly International Rectifier) is a 150V, 33A N-channel enhancement-mode HEXFET® Power MOSFET in D2PAK (TO-262) package, optimized for hard-switched and high-frequency power conversion. It features 34.5 mΩ typical R_DS(on), 26 nC total gate charge, and enhanced body diode dV/dt and dI/dt capability-enabling robust synchronous rectification in SMPS and UPS systems.

For engineers reviewing the IRFS4615PBF datasheet, IRFS4615PBF pinout, IRFS4615PBF application, or IRFS4615PBF equivalent, key selection criteria include avalanche ruggedness (109 mJ E_AS), SOA-limited switching performance up to 175°C junction temperature, and validated unclamped inductive switching behavior under 21A I_AS at V_GS = 10V.

Technical Context

This MOSFET employs planar silicon process with optimized cell geometry to achieve low conduction loss while maintaining strong dynamic ruggedness. Its gate threshold voltage (3.0–5.0 V) and 2.7 Ω internal gate resistance support stable drive in high-speed gate-controlled topologies.

The device integrates an intrinsic fast-recovery body diode with 70 ns typical reverse recovery time (T_J = 25°C, I_F = 21A), 177 nC Q_rr, and 4.9 A peak reverse recovery current-critical for minimizing commutation loss in synchronous buck and LLC resonant converters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	150 V - Maximum blocking voltage before avalanche onset; supports 100 V bus designs with 50% safety margin
R_DS(on) typ.	34.5 mΩ - Conduction loss of ~0.04 W at 10 A DC, enabling >95% efficiency in 12–48 V output SMPS stages
I_D @ T_C = 25°C	33 A - Continuous drain current rating with heatsink; derates to 24 A at 100°C case temperature
Q_g	26 nC - Total gate charge determines driver strength requirement; enables <35 ns rise time with 7.3 Ω gate resistor
E_AS	109 mJ - Single-pulse avalanche energy at T_J = 25°C; validates safe operation during inductive turn-off transients
trr	70 ns - Reverse recovery time at T_J = 25°C, I_F = 21A, dI/dt = 100 A/µs; reduces cross-conduction loss in synchronous rectifiers

Pinout & Package

IRFS4615PBF uses the D2PAK (TO-262) surface-mount package with exposed drain pad for thermal management. The three-terminal configuration supports high-current PCB mounting with low-inductance source return paths.

Pin/Terminal	Circuit Role	Design Meaning
G	Gate	Control terminal; requires ≥10 V to fully enhance; 3.0–5.0 V V_GS(th) ensures noise-immune turn-on in noisy power environments
D	Drain	Main high-side current path; electrically connected to exposed copper tab-must be tied to system ground or high-voltage rail per topology
S	Source	Reference node for gate drive and current sensing; low-inductance connection critical for minimizing switching oscillation

Key Features

Feature	Design Value
Enhanced avalanche ruggedness	109 mJ E_AS and 21 A I_AR validated under unclamped inductive load-reduces need for external snubbers in flyback/forward converters
Optimized body diode	70 ns trr and 177 nC Q_rr at 25°C enable efficient synchronous rectification without external Schottky assist diodes
Low gate charge	26 nC Q_g and 9.0 nC Q_gd reduce driver power loss and improve switching speed control in 100–500 kHz applications
Thermal performance	1.045 °C/W R_θJC allows 140 W dissipation with modest heatsinking-supports compact 300–500 W industrial PSU designs

Applications

High-Efficiency Synchronous Rectification

Uninterruptible Power Supply (UPS)

Use Scenario: Secondary-side switching in isolated DC-DC converters for server PSUs and telecom rectifiers.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier replacing Schottky diode; driven by transformer-coupled or controller-synchronized gate signal.

Use Value: Reduces conduction loss by >40% vs. 45 V Schottky at 20 A, improving full-load efficiency from 92% to 94.5%.

Use Scenario: Inverter stage and battery charging switch in line-interactive and online UPS systems.

IC Role / Device Role / Timing Role: High-current bidirectional switch handling AC line-to-battery and battery-to-AC inversion paths.

Use Value: Withstands 150 V DC bus and 33 A continuous load while maintaining <1.5 V forward drop in body diode mode during transfer switching.

Hard-Switched SMPS

High-Frequency DC-DC Converters

Use Scenario: Primary-side switch in 65–150 kHz flyback and forward converters for industrial control power supplies.

IC Role / Device Role / Timing Role: Main power switch subjected to repetitive unclamped inductive turn-off stress.

Use Value: Validated 109 mJ single-pulse avalanche energy prevents failure during startup or overload without added clamping circuitry.

Use Scenario: High-side switch in 300–600 kHz half-bridge or phase-shifted full-bridge DC-DC modules for AI accelerators and FPGA power rails.

IC Role / Device Role / Timing Role: Fast-turning main switch requiring low Q_gd/Q_g ratio and minimal C_oss nonlinearity.

Use Value: 9.0 nC Q_gd and 382 pF C_oss(TR) ensure clean zero-voltage switching transition with <25 ns td(off) and <20 ns tf.

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
STP14NK15Z	150 V V_DSS, 14 A I_D, 120 mΩ R_DS(on), TO-220 package	Lower current rating and higher on-resistance; unsuitable for >15 A continuous loads	Select when cost sensitivity outweighs efficiency and thermal constraints in low-power auxiliary supplies
IXTP30N15P	150 V V_DSS, 30 A I_D, 45 mΩ R_DS(on), TO-220 package	Higher R_DS(on) and no avalanche rating published; lacks E_AS validation data	Prefer only in non-avalanche-prone topologies where gate drive simplicity and legacy footprint compatibility are prioritized

Compared with STP14NK15Z and IXTP30N15P, IRFS4615PBF delivers superior power density via D2PAK thermal performance, verified avalanche immunity, and lower Q_g/R_DS(on) trade-off-making it the preferred choice for space-constrained, high-reliability 20–35 A SMPS designs.

Availability

IRFS4615PBF is available at Aetrix Electronics and suitable for high-efficiency synchronous rectification, uninterruptible power supply inverters, and hard-switched SMPS requiring stable component supply across industrial, telecom, and computing end markets.

Supply support for IRFS4615PBF 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 leader specializing in power management, automotive electronics, and industrial control ICs and discrete devices.

IRFS4615PBF belongs to the HEXFET® Power MOSFET product line, engineered for high-reliability, high-frequency power conversion in mission-critical infrastructure equipment where thermal stability and transient ruggedness are mandatory.

FAQ

Is IRFS4615PBF lead-free and RoHS compliant?

Yes, IRFS4615PBF is lead-free and RoHS compliant per EU Directive 2011/65/EU. The "PbF" suffix explicitly denotes lead-free termination, and the device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) for unlimited floor life at ≤30°C/60% RH.

What is the maximum recommended gate drive voltage for IRFS4615PBF?

The absolute maximum gate-to-source voltage is ±20 V, but the recommended operating range is 10–15 V for reliable enhancement and minimized gate oxide stress. Driving above 15 V yields diminishing R_DS(on) improvement while increasing risk of gate overvoltage during ringing.

Can IRFS4615PBF be used in parallel configurations?

Yes, IRFS4615PBF supports paralleling due to its positive R_DS(on) temperature coefficient (0.19 V/°C breakdown voltage TC). Matching gate resistors and symmetrical PCB layout are required to ensure current sharing; thermal coupling between devices must be minimized to avoid thermal runaway.

Does IRFS4615PBF require a gate resistor, and what value is recommended?

A gate resistor is mandatory to dampen ringing and limit peak gate current. For 12 V gate drive and 7.3 Ω internal R_G, a 10–22 Ω external resistor provides optimal trade-off between switching speed (<35 ns tr) and EMI suppression-verified in Figure 23a test circuit with 15 V driver.

IRFS4615PBF 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):: 150 V

Current - Continuous Drain (Id) @ 25°C:: 33A (Tc)

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

Rds On (Max) @ Id, Vgs:: 42mOhm @ 21A, 10V

Vgs(th) (Max) @ Id:: 5V @ 100µA

Gate Charge (Qg) (Max) @ Vgs:: 40 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1750 pF @ 50 V

FET Feature:: -

Power Dissipation (Max):: 144W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

IRFS4615PBF FAQ

1.How can I place an order for IRFS4615PBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFS4615PBF 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 IRFS4615PBF reliable?

The price and inventory of IRFS4615PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFS4615PBF is usually 5 days.

3.What payment methods are accepted for IRFS4615PBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFS4615PBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFS4615PBF?

IRFS4615PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFS4615PBF 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 IRFS4615PBF?

For technical support, including IRFS4615PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFS4615PBF requirements.

6.How does Aetrix verify that IRFS4615PBF is sourced from the original manufacturer or authorized distributors?

All IRFS4615PBF 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 IRFS4615PBF meets industry standards.

7.What is the process for return or replacement of IRFS4615PBF?

All IRFS4615PBF units undergo pre-shipment inspection (PSI). If there is an issue with IRFS4615PBF, 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 IRFS4615PBF part is unused and in its original packaging.

Return procedure for IRFS4615PBF:

1.Submit a request within 90 days.

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

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