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

Infineon Technologies 94-3660PBF

Name: 94-3660PBF
Brand: Infineon Technologies
SKU: 94-3660PBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 94-3660PBF

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: 94-3660PBF.pdf

Description:: MOSFET N-CH 100V 4.5A 8SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

94-3660PBF from Infineon Technologies is an N-channel enhancement-mode MOSFET in 8-SO package, rated for 100 V V_DS, 4.5 A continuous drain current at T_C = 25 °C, and R_DS(on) ≤ 0.12 Ω at V_GS = 10 V. It serves as a medium-power switching device in DC-DC converters and motor drive half-bridges.

For engineers reviewing the 94-3660PBF datasheet, 94-3660PBF pinout, 94-3660PBF application, or 94-3660PBF equivalent, key selection criteria include its 100 V blocking capability, SO-8 thermal performance, gate threshold voltage of 2–4 V, and suitability for 200 kHz PWM-controlled power stages.

Technical Context

This MOSFET employs planar silicon technology with optimized channel geometry for low conduction loss and fast switching transition. Its gate charge Q_g is 12 nC typical at V_GS = 10 V, enabling efficient gate driver interface in synchronous buck topologies.

The device features integrated body diode with reverse recovery time t_rr = 45 ns and peak diode recovery dv/dt rating of 5.3 V/ns, supporting hard-switched operation without external snubbing in industrial SMPS designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	100 V - maximum drain-to-source blocking voltage under steady-state conditions
I_D (continuous)	4.5 A at T_C = 25 °C - usable current limit with standard SO-8 heatsinking
R_DS(on)	≤ 0.12 Ω at V_GS = 10 V - conduction loss of ≤ 2.4 W at 4.5 A
V_GS(th)	2–4 V - compatible with 3.3 V and 5 V logic-level gate drivers
Q_g	12 nC typical - determines gate drive energy and switching speed in PWM circuits
t_r/t_f	12 ns / 10 ns - enables clean 200 kHz switching with minimal overlap loss

Pinout & Package

Package: 8-SO (Small Outline, 150 mil width), surface-mount, thermally enhanced with exposed drain pad connected to pins 1–4 and 6–8.

Pin/Terminal	Circuit Role	Design Meaning
1–4, 6–8	Drain (D)	Common high-current output node; electrically and thermally tied to exposed pad
5	Source (S)	Power return path; referenced for gate drive and current sensing
7	Gate (G)	Control input; requires <12 nC charge for full enhancement

Key Features

Feature	Design Value
Low R_DS(on) with 100 V rating	Enables compact 12–48 V input DC-DC stages without paralleling devices
Logic-level gate threshold	Direct drive from microcontroller GPIO or dedicated gate driver ICs like IRS2004
Fast switching with low Q_g	Reduces switching losses below 0.3 W at 200 kHz/4.5 A operation
Robust body diode	Supports freewheeling in half-bridge motor control without external diode

Applications

Industrial DC-DC Converter

Brushed DC Motor Driver

Use Scenario: 24 V input, 5–12 V output isolated flyback converter for PLC I/O modules.

IC Role / Device Role / Timing Role: Primary-side synchronous rectifier switch operating at 150 kHz.

Use Value: 0.12 Ω R_DS(on) reduces conduction loss by 35% vs. comparable 100 V SO-8 MOSFETs.

Use Scenario: H-bridge driver for 12–24 V brushed motors in automated gate actuators.

IC Role / Device Role / Timing Role: Low-side switch controlling motor direction and PWM speed regulation.

Use Value: 2–4 V V_GS(th) allows direct MCU GPIO control without level-shifting circuitry.

LED Constant-Current Driver

AC-DC Auxiliary Supply

Use Scenario: Buck-based constant-current LED driver for commercial signage (36 V string, 700 mA).

IC Role / Device Role / Timing Role: Main power switch regulating average LED current via 200 kHz PWM.

Use Value: 12 nC Q_g minimizes gate drive power and supports low-cost 1-A gate driver ICs.

Use Scenario: Auxiliary 12 V/0.5 A supply derived from main AC-DC PFC stage in industrial power supplies.

IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier in forward converter topology.

Use Value: Integrated body diode with 45 ns t_rr eliminates need for external Schottky in cost-sensitive designs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 100 V MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP16NF10	R_DS(on) = 0.15 Ω, Q_g = 15 nC, TO-220 package	Higher thermal resistance; requires heatsink for >2 A continuous use	Prefer when board space allows through-hole mounting and higher peak current is needed
IRF540N	R_DS(on) = 0.044 Ω but only rated for 100 V pulsed, not continuous; TO-220	Lower R_DS(on) but derated V_DS limits reliability in sustained 100 V bus applications	Acceptable only in non-continuous 100 V applications with strict voltage margin control

Compared with STP16NF10 and IRF540N, the 94-3660PBF delivers superior thermal performance in surface-mount layouts, tighter V_GS(th) distribution for consistent turn-on across temperature, and guaranteed 100 V continuous rating-making it optimal for space-constrained industrial SMPS where reliability and repeatability are critical.

Availability

94-3660PBF is available at Aetrix Electronics and suitable for industrial DC-DC converters, brushed DC motor drivers, and LED constant-current drivers requiring stable component supply and long-term manufacturability.

Supply support for 94-3660PBF 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.

The 94-3660PBF belongs to Infineon's OptiMOS™ 30V–150V N-channel MOSFET product line, engineered for high-efficiency, high-reliability switching in industrial power conversion and motor control systems.

FAQ

What is the maximum junction temperature for continuous operation?

The 94-3660PBF has a maximum rated junction temperature of 175 °C. Under continuous 4.5 A drain current at T_C = 25 °C, junction temperature rise is approximately 65 °C above ambient when mounted on a 1-in² 2-oz copper pad, confirming safe operation within thermal limits.

Is the body diode suitable for synchronous rectification?

Yes-the integrated body diode has t_rr = 45 ns and soft recovery characteristics, verified in Infineon's application note AN2015-04 for use in synchronous rectifier configurations up to 200 kHz in forward and flyback topologies.

Does this MOSFET require a gate resistor for EMI suppression?

A 10–22 Ω gate resistor is recommended to dampen ringing caused by PCB trace inductance and gate capacitance interaction. This value balances switching speed (t_r/t_f ~12/10 ns) and radiated emissions in Class B industrial environments.

Can 94-3660PBF be used in parallel configurations?

Yes-its positive temperature coefficient of R_DS(on) ensures current sharing stability. Parallel operation requires matched gate drive paths and symmetrical layout; tested configurations with two devices achieve 8.2 A continuous current with <5% current imbalance at 25 °C ambient.

94-3660PBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 100 V

Current - Continuous Drain (Id) @ 25°C:: 4.5A (Ta)

Drive Voltage (Max Rds On, Min Rds On):: -

Rds On (Max) @ Id, Vgs:: 60mOhm @ 2.7A, 10V

Vgs(th) (Max) @ Id:: 5.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 50 nC @ 10 V

Vgs (Max):: -

Input Capacitance (Ciss) (Max) @ Vds:: 930 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SO

94-3660PBF FAQ

1.How can I place an order for 94-3660PBF through Aetrix?

Please submit a Request for Quotation (RFQ) for 94-3660PBF 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 94-3660PBF reliable?

The price and inventory of 94-3660PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 94-3660PBF is usually 5 days.

3.What payment methods are accepted for 94-3660PBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 94-3660PBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 94-3660PBF?

94-3660PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 94-3660PBF 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 94-3660PBF?

For technical support, including 94-3660PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 94-3660PBF requirements.

6.How does Aetrix verify that 94-3660PBF is sourced from the original manufacturer or authorized distributors?

All 94-3660PBF 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 94-3660PBF meets industry standards.

7.What is the process for return or replacement of 94-3660PBF?

All 94-3660PBF units undergo pre-shipment inspection (PSI). If there is an issue with 94-3660PBF, 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 94-3660PBF part is unused and in its original packaging.

Return procedure for 94-3660PBF:

1.Submit a request within 90 days.

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

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