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

Infineon Technologies IRFR9120NCPBF

Name: IRFR9120NCPBF
Brand: Infineon Technologies
SKU: IRFR9120NCPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFR9120NCPBF

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: IRFR9120NCPBF.pdf

Description:: MOSFET P-CH 100V 6.6A DPAK

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Product details

Overview

IRFR9120NCPBF from Infineon Technologies (formerly International Rectifier) is a p-channel enhancement-mode Power MOSFET in TO-220AB package, rated for -100 V V_DS, 7.6 A I_D (T_C = 25°C), R_DS(on) ≤ 0.42 Ω at V_GS = -10 V, and featuring 100% avalanche-rated ruggedness. It serves as a high-side load switch or reverse-polarity protection device in DC power distribution systems.

For engineers reviewing the IRFR9120NCPBF datasheet, IRFR9120NCPBF pinout, IRFR9120NCPBF application, or IRFR9120NCPBF equivalent, key selection criteria include verified p-channel conduction capability, guaranteed unclamped inductive switching (UIS) performance, gate threshold voltage stability across temperature, and TO-220AB thermal resistance (R_θJC = 3.5°C/W).

Technical Context

This MOSFET employs planar silicon-gate process technology with optimized cell pitch and trench-assisted edge termination to achieve stable R_DS(on) over temperature and robust short-circuit withstand time (t_SC ≥ 10 µs at V_DD = 50 V, T_J = 25°C). Its negative gate threshold (V_GS(th) = −2.0 to −4.0 V) enables direct interface with standard logic-level controllers without level-shifting circuitry.

The device operates in enhancement mode only, with zero gate current requirement in steady state and specified total gate charge (Q_g = 38 nC at V_GS = −10 V), supporting efficient PWM-driven switching in 10–100 kHz power control applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	−100 V: Maximum drain-source blocking voltage under reverse polarity or high-side switch configuration.
I_D (T_C = 25°C)	−7.6 A: Continuous DC current capability with heatsink; derates to −4.8 A at T_C = 100°C.
R_DS(on) max	0.42 Ω @ V_GS = −10 V: On-resistance determines conduction loss in high-side switch or reverse-battery protection circuits.
V_GS(th)	−2.0 to −4.0 V: Gate threshold range ensures reliable turn-on with 3.3 V or 5 V microcontroller outputs.
Q_g	38 nC @ V_GS = −10 V: Total gate charge defines drive strength requirement and switching transition time.
E_AS	110 mJ: Single-pulse avalanche energy rating supports robust operation during inductive load transients.
R_θJC	3.5°C/W: Junction-to-case thermal resistance enables thermal design with standard TO-220 heatsinks.

Pinout & Package

IRFR9120NCPBF uses the TO-220AB package (3-lead, non-isolated, straight lead form), with drain connected to the metal tab for direct heatsinking. The package meets JEDEC TO-220AB mechanical outline standards and supports screw-mount or clip-based thermal interface.

Pin/Terminal	Circuit Role	Design Meaning
Drain (Tab)	Main current path output terminal	Electrically connected to metal tab; must be insulated from chassis unless system ground reference permits direct mounting.
Source	Reference node for gate drive and current return	Connected to system ground or positive rail depending on high-side vs. low-side topology; defines V_GS reference.
Gate	Control input for channel conduction	High-impedance MOS gate requiring <100 nA bias current; sensitive to ESD and requires RC snubbing in fast-switching layouts.

Key Features

Feature	Design Value
100% UIS tested	Each unit validated for unclamped inductive switching up to rated E_AS, ensuring reliability in motor drive and solenoid control.
Fast body diode	Reverse recovery time t_rr = 120 ns enables use in synchronous rectification or freewheeling paths without external Schottky.
Logic-level compatible	V_GS(th) upper limit of −4.0 V allows full enhancement with 5 V TTL/CMOS drivers without gate boosters.
Lead-free and RoHS compliant	Meets IPC/JEDEC J-STD-020D reflow profile; Pb-free plating on leads and tab supports automated assembly.

Applications

Reverse Polarity Protection

Battery Management System

Use Scenario: Prevents damage to downstream electronics when Li-ion or lead-acid battery is inserted backward in portable equipment.

IC Role / Device Role / Timing Role: P-channel MOSFET configured as high-side switch with gate driven by battery voltage through resistor divider.

Use Value: Eliminates need for series diode, reducing forward drop from ~0.7 V to <50 mV at 5 A, improving efficiency and thermal margin.

Use Scenario: Enables controlled charge/discharge path isolation between battery cells and protection IC in multi-cell packs.

IC Role / Device Role / Timing Role: Acts as bidirectional blocking element in charge path, turned off during fault conditions detected by BMS controller.

Use Value: Supports precise current sensing via shunt resistor by eliminating diode voltage offset, enabling ±1% SOC accuracy.

DC Motor Direction Control

Industrial PLC Output Module

Use Scenario: Half-bridge high-side switch in brushed DC motor H-bridge for reversing direction in HVAC actuators.

IC Role / Device Role / Timing Role: High-side p-channel switch paired with n-channel low-side driver; gated by complementary PWM signals.

Use Value: Reduces component count versus bootstrap-based n-channel high-side solution, simplifying gate drive layout and timing alignment.

Use Scenario: Solid-state replacement for electromechanical relays in 24 V DC digital output modules for factory automation.

IC Role / Device Role / Timing Role: Load switch providing isolated, current-limited, and short-circuit protected output to solenoids or indicator lamps.

Use Value: Achieves >100,000 switching cycles versus <100,000 for mechanical relays, with no contact bounce or arcing degradation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar p-channel power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRF9540NPBF	R_DS(on) = 0.2 Ω (lower), Q_g = 54 nC (higher), V_GS(th) = −2.0 to −4.0 V (same range)	Better conduction loss but slower switching; suited for DC/low-frequency loads only	Select when thermal budget is tight and switching frequency <10 kHz
STP9PF10	R_DS(on) = 0.35 Ω, V_DS = −100 V, Q_g = 28 nC, but no UIS rating published	Lacks avalanche ruggedness validation; unsuitable for inductive loads without external clamping	Acceptable only in purely resistive or capacitive load applications with strict cost constraints

Compared with IRF9540NPBF and STP9PF10, IRFR9120NCPBF offers balanced trade-off between conduction loss, switching speed, and proven avalanche survivability-making it preferred for industrial motor drives and battery protection where transient robustness is non-negotiable.

Availability

IRFR9120NCPBF is available at Aetrix Electronics and suitable for reverse polarity protection, battery management systems, DC motor control, and industrial PLC output modules requiring stable component supply and long-term manufacturability.

Supply support for IRFR9120NCPBF 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 maintains full product line continuity, technical documentation, and manufacturing control for legacy HEXFET devices.

This part belongs to the Generation 3 HEXFET Power MOSFET family, engineered specifically for high-reliability DC power switching in automotive, industrial, and telecom infrastructure where ruggedness and consistent parametric performance are critical.

FAQ

What is the maximum junction temperature for continuous operation?

The absolute maximum junction temperature is 175°C. Derated continuous operation requires maintaining T_J ≤ 150°C under worst-case ambient and power dissipation conditions. Thermal design must account for R_θJA = 62°C/W (no heatsink) or R_θJC = 3.5°C/W (with heatsink) per datasheet test conditions.

Can IRFR9120NCPBF be used in parallel with identical units?

Yes, but only with matched gate drive impedance and symmetrical PCB layout to ensure current sharing. The device's positive temperature coefficient of R_DS(on) provides inherent current balancing above 100°C, though gate resistance mismatch >5% may cause >20% current imbalance at full load.

Is the TO-220AB tab electrically isolated?

No-the drain is internally connected to the metal tab. Electrical isolation requires insulating hardware (e.g., shoulder washers, silicone pads) and non-conductive mounting screws. Direct mounting to grounded chassis creates a drain-to-chassis short unless system architecture explicitly references drain as ground.

Does this MOSFET require a gate resistor for safe operation?

A gate resistor (10–100 Ω) is required to dampen ringing caused by gate-drain capacitance and PCB inductance during switching. Without it, overshoot exceeding ±20 V can trigger parasitic turn-on or gate oxide stress, especially in high-dV/dt environments like motor drives.

IRFR9120NCPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: HEXFET®

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

Packaging:: Tube

Product Status:: Obsolete

FET Type:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 100 V

Current - Continuous Drain (Id) @ 25°C:: 6.6A (Ta)

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

Rds On (Max) @ Id, Vgs:: 480mOhm @ 3.9A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 27 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 350 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: -

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

IRFR9120NCPBF FAQ

1.How can I place an order for IRFR9120NCPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFR9120NCPBF 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 IRFR9120NCPBF reliable?

The price and inventory of IRFR9120NCPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFR9120NCPBF is usually 5 days.

3.What payment methods are accepted for IRFR9120NCPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFR9120NCPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFR9120NCPBF?

IRFR9120NCPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFR9120NCPBF 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 IRFR9120NCPBF?

For technical support, including IRFR9120NCPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFR9120NCPBF requirements.

6.How does Aetrix verify that IRFR9120NCPBF is sourced from the original manufacturer or authorized distributors?

All IRFR9120NCPBF 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 IRFR9120NCPBF meets industry standards.

7.What is the process for return or replacement of IRFR9120NCPBF?

All IRFR9120NCPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRFR9120NCPBF, 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 IRFR9120NCPBF part is unused and in its original packaging.

Return procedure for IRFR9120NCPBF:

1.Submit a request within 90 days.

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

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