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

Infineon Technologies 94-4849PBF

Name: 94-4849PBF
Brand: Infineon Technologies
SKU: 94-4849PBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 94-4849PBF

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: -

Datasheet:: 94-4849PBF.pdf

Description:: MOSFET P-CH 55V 11A DPAK

Quantity:: RFQ Add To RFQ list

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Inventory:2,897

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Product details

Overview

94-4849PBF from Infineon Technologies is a P-channel enhancement-mode MOSFET rated for 55 V V_DS, 11 A continuous drain current at T_C = 25°C, and 40 mΩ typical R_DS(on) at V_GS = −10 V. It operates as a high-side load switch in DC power distribution circuits for industrial control modules and embedded power rails.

For engineers reviewing the 94-4849PBF datasheet, 94-4849PBF pinout, 94-4849PBF application, or 94-4849PBF equivalent, key selection criteria include verified R_DS(on) at −10 V and −4.5 V, thermal resistance (R_thJC = 2.5 K/W), SOA compliance at 25°C, and DPAK package suitability for automated SMT assembly with 1.5 mm creepage clearance.

Technical Context

This MOSFET uses Infineon's OptiMOS™ P-channel process, delivering low gate charge (Q_G = 24 nC) and fast switching (t_on = 14 ns, t_off = 32 ns) under resistive loads. Its body diode exhibits 45 ns reverse recovery time (t_rr) and 35 A peak forward current rating.

The device supports logic-level drive down to V_GS = −4.5 V (R_DS(on) ≤ 60 mΩ), enabling direct interface with 5 V microcontroller GPIOs without level-shifting. It is qualified per AEC-Q101 for stress reliability but not automotive-qualified by default.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	−55 V: Maximum blocking voltage in high-side switch configuration before avalanche breakdown.
I_D (continuous)	−11 A at T_C = 25°C: Sustained load current capability with heatsink; derates to −7.5 A at T_C = 100°C.
R_DS(on) (typ)	40 mΩ at V_GS = −10 V: Conduction loss of 4.84 W at −11 A, critical for thermal design in 24 V systems.
Q_G	24 nC: Gate drive energy requirement determines minimum driver current (≥1.2 A for 20 ns rise time).
R_thJC	2.5 K/W: Junction-to-case thermal resistance enables 25 W power dissipation with 62.5°C temperature rise above heatsink.
t_rr	45 ns: Body diode reverse recovery time limits hard-switching frequency to ≤200 kHz in flyback or synchronous rectifier use.

Pinout & Package

Supplied in surface-mount DPAK (TO-252) package with exposed drain pad for thermal conduction. Standard 3-pin layout: Pin 1 = Gate, Pin 2 = Drain (tab), Pin 3 = Source.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (G)	Gate terminal	Control input requiring −10 V to fully enhance; gate capacitance C_iss = 1200 pF affects drive loop stability.
Pin 2 (D)	Drain terminal / thermal pad	Main current path and primary heat transfer surface; must be soldered to ≥100 mm² copper pour for R_thJC compliance.
Pin 3 (S)	Source terminal	Reference node for gate drive; connects to system ground or floating rail depending on high/low-side topology.

Key Features

Feature	Design Value
P-channel enhancement mode	Enables high-side switching without bootstrap circuitry-simplifies 24 V/48 V DC bus control in PLC I/O modules.
Low R_DS(on) at −4.5 V	60 mΩ ensures <1 W conduction loss at −8 A, supporting direct MCU GPIO drive in space-constrained designs.
Fast switching with low Q_G	24 nC gate charge allows clean 10–90% transitions in <20 ns using standard 1.5 A gate drivers like TC4427.
Avalanche-rated	Specified single-pulse avalanche energy E_AS = 110 mJ supports robustness against inductive load turn-off transients in motor drivers.

Applications

Industrial Power Switching

DC Motor Control

Use Scenario: High-side switching of 24 V solenoid valves in programmable logic controller (PLC) output modules.

IC Role / Device Role / Timing Role: Load switch controlling current flow to inductive actuator; withstands 100 V L·di/dt spikes during valve de-energization.

Use Value: 110 mJ avalanche energy rating eliminates need for external TVS clamping, reducing BOM count by one component.

Use Scenario: H-bridge high-side leg in brushed DC motor driver for warehouse automation conveyors.

IC Role / Device Role / Timing Role: Upper quadrant switch in dual-MOSFET half-bridge; synchronized with complementary N-channel low-side device.

Use Value: 45 ns body diode t_rr minimizes cross-conduction losses during PWM dead-time, improving efficiency by ~2.3% at 20 kHz.

Power Over Ethernet (PoE) PSE

LED Driver Power Stage

Use Scenario: Secondary-side power switch in PoE-powered equipment (PD) auxiliary supply with 55 V input tolerance.

IC Role / Device Role / Timing Role: Input protection switch isolating downstream DC/DC converter during hot-swap events or fault conditions.

Use Value: −55 V V_DS margin accommodates IEEE 802.3bt Class 8 PoE transient surges up to 57 V without derating.

Use Scenario: Constant-current shunt regulator switch in high-brightness LED string drivers for industrial signage.

IC Role / Device Role / Timing Role: Linear-mode current sink modulated via PWM to regulate LED brightness while dissipating excess power.

Use Value: 2.5 K/W R_thJC enables 3.5 W linear-mode dissipation with <10°C junction rise-sufficient for 100 mA × 35 V drop applications.

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel MOSFET switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP12P55FP	R_DS(on) = 60 mΩ @ −10 V; higher Q_G = 32 nC; TO-220FP package.	Larger footprint and lower thermal performance (R_thJC = 3.5 K/W); unsuitable for dense SMT layouts.	Select only if through-hole assembly is required and board space permits larger thermal relief.
IRF9540NPBF	R_DS(on) = 200 mΩ @ −10 V; slower t_off = 110 ns; legacy planar process.	Higher conduction loss limits usable current to ≤5 A in same thermal environment; obsolete in new designs.	Avoid for new designs due to 5× higher R_DS(on) and lack of avalanche rating documentation.

Compared with STP12P55FP and IRF9540NPBF, 94-4849PBF delivers superior thermal efficiency (2.5 vs. 3.5 K/W), lower switching loss (24 vs. 32 nC), and documented avalanche ruggedness-making it optimal for compact, high-reliability industrial power switches.

Availability

94-4849PBF is available at Aetrix Electronics and suitable for industrial control, motor drive, PoE-powered equipment, and LED lighting systems requiring stable component supply across multi-year production cycles.

Supply support for 94-4849PBF 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 ICs, and security solutions, with global manufacturing and qualification infrastructure.

94-4849PBF belongs to the OptiMOS™ P-channel product line, engineered for high-efficiency DC power switching in industrial automation, building controls, and embedded power supplies.

FAQ

What is the maximum safe operating temperature for 94-4849PBF?

The junction temperature must not exceed 175°C. At T_C = 100°C, the device supports −7.5 A continuous drain current. Derating curves in the official Infineon datasheet specify linear reduction from 11 A at 25°C to zero at 175°C, with thermal shutdown recommended above 150°C for long-term reliability.

Does 94-4849PBF require a gate resistor for ESD protection?

No external gate resistor is required solely for ESD protection-the device integrates 1.5 kΩ internal gate resistor per Infineon's packaging specification. However, an external 10–47 Ω series resistor is recommended between driver and gate to dampen ringing and reduce EMI in high-dV/dt environments.

Can 94-4849PBF be used in linear (analog) regulation mode?

Yes-it is rated for linear-mode operation with Safe Operating Area (SOA) defined up to 100 µs pulse width. At DC, maximum power dissipation is limited to 3.5 W with proper PCB copper area; SOA curves confirm 11 A × 5 V operation is permissible for short durations (<1 ms) without secondary breakdown.

Is lead-free and RoHS-compliant soldering supported for DPAK mounting?

Yes-94-4849PBF is RoHS-compliant and qualified for lead-free reflow per JEDEC J-STD-020 Rev E. Peak reflow temperature of 260°C for 30 seconds is permitted; preheat ramp rate must stay within 3°C/s to avoid package delamination or die attach voiding.

94-4849PBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: -

Packaging:: Tube

Product Status:: Obsolete

FET Type:: -

Technology:: -

Drain to Source Voltage (Vdss):: -

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

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

Rds On (Max) @ Id, Vgs:: -

Vgs(th) (Max) @ Id:: -

Gate Charge (Qg) (Max) @ Vgs:: -

Vgs (Max):: -

Input Capacitance (Ciss) (Max) @ Vds:: -

FET Feature:: -

Power Dissipation (Max):: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

94-4849PBF FAQ

1.How can I place an order for 94-4849PBF through Aetrix?

Please submit a Request for Quotation (RFQ) for 94-4849PBF 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 94-4849PBF reliable?

The price and inventory of 94-4849PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 94-4849PBF is usually 5 days.

3.What payment methods are accepted for 94-4849PBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 94-4849PBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 94-4849PBF?

94-4849PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 94-4849PBF 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 94-4849PBF?

For technical support, including 94-4849PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 94-4849PBF requirements.

6.How does Aetrix verify that 94-4849PBF is sourced from the original manufacturer or authorized distributors?

All 94-4849PBF 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 94-4849PBF meets industry standards.

7.What is the process for return or replacement of 94-4849PBF?

All 94-4849PBF units undergo pre-shipment inspection (PSI). If there is an issue with 94-4849PBF, 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 94-4849PBF part is unused and in its original packaging.

Return procedure for 94-4849PBF:

1.Submit a request within 90 days.

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

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