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

Vishay Siliconix IRFU9020

Name: IRFU9020
Brand: Vishay Siliconix
SKU: IRFU9020
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFU9020

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: TO-251-3 Short Leads, IPAK, TO-251AA

Datasheet:: IRFU9020.pdf

Description:: MOSFET P-CH 50V 9.9A TO251AA

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRFU9020 from Vishay Siliconix is a P-channel enhancement-mode power MOSFET in IPAK (TO-251) package, rated for -50 V drain-source voltage, 0.28 Ω R_DS(on) at V_GS = -10 V, and -9.9 A continuous drain current at T_C = 25 °C. It delivers robust avalanche capability (E_AS = 250 mJ), fast switching (t_r = 57–66 ns), and high dV/dt immunity (5.8 V/ns), making it suitable for DC/DC converter high-side switches and motor control H-bridge legs.

For engineers reviewing the IRFU9020 datasheet, IRFU9020 pinout, IRFU9020 application, or IRFU9020 equivalent, key selection considerations include its -50 V V_DS, 0.28 Ω on-resistance, TO-251 thermal performance (R_thJC = 3.0 °C/W), repetitive avalanche rating (-9.9 A I_AR), and compatibility with standard gate drivers requiring -10 V turn-on.

Technical Context

The IRFU9020 employs planar vertical DMOS technology optimized for low conduction loss and high ruggedness. Its gate threshold voltage range of -2.0 V to -4.0 V ensures reliable turn-off under noise margin while supporting logic-level drive when paired with appropriate level-shifting circuits.

It features an integrated body diode with t_rr = 56–280 ns and Q_rr = 0.17–0.85 nC, enabling efficient synchronous rectification in buck converters. The device's dynamic parameters-including C_iss = 490 pF, C_oss = 320 pF, and Q_g = 9.4–14 nC-support predictable gate drive design and minimize switching losses in hard-switched topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	-50 V - Maximum blocking voltage for high-side switch applications up to 40 V bus rails with margin
R_DS(on)	0.28 Ω max at V_GS = -10 V - Enables <1.5 W conduction loss at 9.9 A, reducing heatsink requirements
I_D (cont.)	-9.9 A at T_C = 25 °C - Supports high-current loads in compact PCB layouts with adequate copper area
E_AS	250 mJ single-pulse - Withstands unclamped inductive energy during fault conditions without failure
Q_g	14 nC max - Determines gate driver current requirement (~1.4 A peak for 10 ns rise time)
dV/dt	5.8 V/ns - Resists false triggering in noisy high-dI/dt environments like motor drives
R_thJC	3.0 °C/W max - Enables direct heatsink mounting for thermal management in space-constrained designs

Pinout & Package

IRFU9020 uses the IPAK (TO-251) surface-mount package with straight leads, featuring a thermally enhanced drain tab for direct PCB copper pour attachment. The package measures 8.89 mm × 6.35 mm × 2.39 mm (L × W × H) and supports JEDEC-compliant reflow soldering.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Lead)	Source (S)	Reference node for gate drive; connects to load return or ground in high-side configuration
Pin 2 (Lead)	Gate (G)	Control input requiring negative voltage relative to source to turn on; low input capacitance eases driving
Pin 3 (Drain Tab)	Drain (D)	Main power terminal; electrically and thermally connected to large exposed copper pad on bottom of package

Key Features

Feature	Design Value
P-Channel enhancement mode	Enables high-side switching without bootstrap circuitry or level shifters in low-frequency DC/DC applications
Repetitive avalanche rated	Supports reliable operation under transient overvoltage events (e.g., inductive kickback) without derating
Dynamic dV/dt rating	Guarantees no spurious turn-on during rapid voltage transients across drain-source, critical in motor phase-legs
Low Q_gd/Q_g ratio	0.46 typical (6.5/14 nC) - Improves Miller immunity and enables stable hard-switching above 100 kHz
TO-251 straight-lead form	Facilitates through-hole prototyping and manual assembly while retaining surface-mount thermal benefits

Applications

DC/DC Buck Converter	Brushed DC Motor Driver
Use Scenario: High-efficiency 12 V to 5 V step-down regulator in industrial control modules. IC Role / Device Role / Timing Role: High-side synchronous rectifier switch operating at 250 kHz with forced PWM mode. Use Value: Low R_DS(on) reduces conduction loss by >30% vs. comparable -40 V MOSFETs, improving full-load efficiency to >92%.	Use Scenario: Bidirectional drive for 24 V brushed motors in automated gate actuators. IC Role / Device Role / Timing Role: Upper-leg switch in H-bridge topology, commutated at ≤10 kHz with dead-time control. Use Value: Repetitive avalanche rating absorbs back-EMF spikes during abrupt stop commands, eliminating external snubbers.
Hot-Swap Controller	Power OR-ing Circuit
Use Scenario: Inrush-limited 48 V board-level power entry for telecom line cards. IC Role / Device Role / Timing Role: Series pass element controlled by dedicated hot-swap IC to limit surge current during insertion. Use Value: Precise V_GS(th) (-2.0 to -4.0 V) enables accurate current limiting threshold setting with minimal external components.	Use Scenario: Redundant 12 V supply combining from dual PSUs in network routers. IC Role / Device Role / Timing Role: Ideal diode replacement in OR-ing configuration, driven by dedicated controller. Use Value: Body diode reverse recovery charge (Q_rr = 0.17–0.85 nC) minimizes cross-conduction loss during supply switchover.

DC/DC Buck Converter

Brushed DC Motor Driver

Use Scenario: High-efficiency 12 V to 5 V step-down regulator in industrial control modules.

IC Role / Device Role / Timing Role: High-side synchronous rectifier switch operating at 250 kHz with forced PWM mode.

Use Value: Low R_DS(on) reduces conduction loss by >30% vs. comparable -40 V MOSFETs, improving full-load efficiency to >92%.

Use Scenario: Bidirectional drive for 24 V brushed motors in automated gate actuators.

IC Role / Device Role / Timing Role: Upper-leg switch in H-bridge topology, commutated at ≤10 kHz with dead-time control.

Use Value: Repetitive avalanche rating absorbs back-EMF spikes during abrupt stop commands, eliminating external snubbers.

Hot-Swap Controller

Power OR-ing Circuit

Use Scenario: Inrush-limited 48 V board-level power entry for telecom line cards.

IC Role / Device Role / Timing Role: Series pass element controlled by dedicated hot-swap IC to limit surge current during insertion.

Use Value: Precise V_GS(th) (-2.0 to -4.0 V) enables accurate current limiting threshold setting with minimal external components.

Use Scenario: Redundant 12 V supply combining from dual PSUs in network routers.

IC Role / Device Role / Timing Role: Ideal diode replacement in OR-ing configuration, driven by dedicated controller.

Use Value: Body diode reverse recovery charge (Q_rr = 0.17–0.85 nC) minimizes cross-conduction loss during supply switchover.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRFR9020	Same die, DPAK (TO-252) package; R_thJA = 110 °C/W vs. IRFU9020's 110 °C/W (board-level), but lower R_thJC not specified	Requires surface-mount layout; lacks straight leads for through-hole evaluation	Choose IRFR9020 for automated SMT production where thermal pad area is constrained
SiHFU9020	Same die and IPAK package; Pb-free/halogen-free construction per JEDEC J-STD-609A Class 2a	No functional difference; identical pinout, ratings, and thermal behavior	Choose SiHFU9020 for RoHS-compliant designs requiring documented green material compliance

Compared with IRFU9020, IRFR9020 trades mechanical flexibility for higher-volume SMT compatibility, while SiHFU9020 provides identical electrical and thermal performance with certified environmental compliance-neither offers pin-to-pin interchangeability without verifying board footprint and soldering process alignment.

Availability

IRFU9020 is available at Aetrix Electronics and suitable for DC/DC converters, brushed motor drivers, and hot-swap controllers requiring stable component supply across industrial, telecom, and embedded power applications.

Supply support for IRFU9020 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

Vishay Siliconix is a global leader in discrete semiconductors, specializing in high-reliability MOSFETs, diodes, and optoelectronics for power management and signal conditioning.

The IRFU9020 belongs to Vishay's "TrenchFET® Gen II" P-channel power MOSFET family, engineered for high-efficiency, high-ruggedness switching in space- and thermally-constrained power conversion systems.

FAQ

What is the maximum junction temperature rating for the IRFU9020?

The IRFU9020 has an operating junction and storage temperature range of -55 °C to +150 °C. This 150 °C maximum junction temperature allows sustained operation in high-ambient environments such as enclosed industrial enclosures or near heat-generating components, provided thermal design meets the R_thJC = 3.0 °C/W specification with proper heatsinking. Derating curves in the datasheet confirm usable current down to 6.3 A at T_C = 100 °C.

Does the IRFU9020 require a negative gate drive voltage to operate?

Yes, the IRFU9020 is a P-channel MOSFET and requires a gate-source voltage (V_GS) more negative than its threshold range of -2.0 V to -4.0 V to fully enhance. For reliable saturation, V_GS = -10 V is specified to achieve R_DS(on) ≤ 0.28 Ω. Driving the gate to 0 V (relative to source) turns the device off; pulling it below -2 V initiates conduction. Gate drivers must be referenced to the source node, not ground.

Can the IRFU9020 be used in parallel with other MOSFETs?

Yes, the IRFU9020 is explicitly designed for ease of paralleling due to its positive temperature coefficient of R_DS(on), which promotes current sharing as temperature rises. Its low gate charge (Q_g ≤ 14 nC) and matched dynamic parameters reduce gate drive complexity. However, layout symmetry-especially equal gate trace inductance and shared source/drain copper areas-is essential to avoid imbalance. External gate resistors (≥10 Ω) are recommended to dampen oscillation.

What is the avalanche energy rating of the IRFU9020 and how is it tested?

IRFU9020 is rated for 250 mJ single-pulse avalanche energy (E_AS) and 4.2 mJ repetitive avalanche energy (E_AR). E_AS is measured under unclamped inductive switching (UIS) conditions: V_DD = -25 V, starting T_J = 25 °C, L = 5.1 mH, R_g = 25 Ω, peak I_L = -9.9 A. This rating validates ruggedness against inductive load turn-off transients, such as those seen in relay drivers or solenoid controls, without requiring external protection.

Is the IRFU9020 compatible with lead-free reflow soldering processes?

Yes, the IRFU9020 is qualified for lead-free reflow soldering with a peak temperature of 300 °C for 10 seconds, per the manufacturer's soldering recommendations. Its plastic package (epoxy molding compound) and internal metallization are rated for JEDEC J-STD-020 moisture sensitivity level (MSL) 1, meaning it may be stored indefinitely at ≤30 °C/85% RH without baking prior to assembly. Always follow Vishay's recommended thermal profile to avoid delamination.

IRFU9020 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Package/Case:: TO-251-3 Short Leads, IPAK, TO-251AA

Packaging:: Tube

Product Status:: Obsolete

FET Type:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 50 V

Current - Continuous Drain (Id) @ 25°C:: 9.9A (Tc)

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

Rds On (Max) @ Id, Vgs:: 280mOhm @ 5.7A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 14 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 490 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 42W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-251AA

IRFU9020 FAQ

1.How can I place an order for IRFU9020 through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFU9020 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 IRFU9020 reliable?

The price and inventory of IRFU9020 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFU9020 is usually 5 days.

3.What payment methods are accepted for IRFU9020?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFU9020 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFU9020?

IRFU9020 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFU9020 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 IRFU9020?

For technical support, including IRFU9020 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFU9020 requirements.

6.How does Aetrix verify that IRFU9020 is sourced from the original manufacturer or authorized distributors?

All IRFU9020 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 IRFU9020 meets industry standards.

7.What is the process for return or replacement of IRFU9020?

All IRFU9020 units undergo pre-shipment inspection (PSI). If there is an issue with IRFU9020, 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 IRFU9020 part is unused and in its original packaging.

Return procedure for IRFU9020:

1.Submit a request within 90 days.

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

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