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

Vishay Siliconix IRFP9140

Name: IRFP9140
Brand: Vishay Siliconix
SKU: IRFP9140
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRFP9140

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: TO-247-3

Datasheet:: IRFP9140.pdf

Description:: MOSFET P-CH 100V 21A TO247-3

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Product details

Overview

IRFP9140 from Vishay Siliconix is a P-channel enhancement-mode power MOSFET in TO-247AC package, rated for -100 V V_DS, 0.20 Ω R_DS(on) at V_GS = -10 V, and -21 A continuous drain current at T_C = 25 °C. It delivers ruggedized switching performance in high-voltage DC-DC converters, motor control H-bridges, and industrial power supplies.

For engineers reviewing the IRFP9140 datasheet, IRFP9140 pinout, IRFP9140 application, or IRFP9140 equivalent, key selection criteria include its -100 V blocking capability, repetitive avalanche rating (E_AS = 960 mJ), fast switching (t_r = 73 ns), isolated mounting hole for thermal management, and RoHS-compliant Pb-free variant IRFP9140PbF.

Technical Context

This device operates as a high-side switch in negative-rail configurations, leveraging its P-channel topology to simplify gate drive circuitry in buck regulators and polarity-reversal circuits. Its -175 °C maximum junction temperature and 0.83 °C/W R_thJC support sustained operation under high ambient conditions with minimal heatsink mass.

The IRFP9140 integrates a fast-recovery body diode (t_rr = 130–260 ns, Q_rr = 0.35–0.70 μC) and exhibits dynamic dV/dt immunity up to -5.5 V/ns - critical for noise-immune operation in inductive load switching and unclamped inductive turn-off scenarios.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	-100 V - Supports high-side switching in -48 V telecom systems and industrial -100 V bus architectures
R_DS(on)	0.20 Ω @ V_GS = -10 V - Enables <1.5 W conduction loss at -13 A, reducing thermal design burden
Q_g	61 nC - Dictates gate driver power requirement; compatible with standard ±12 V logic-level drivers
E_AS	960 mJ - Allows safe single-pulse energy absorption during inductive load turn-off without external snubbers
t_r/t_f	73 ns / 57 ns - Enables >100 kHz switching in hard-switched topologies with low switching loss trade-off
T_J(max)	+175 °C - Permits operation in sealed enclosures or high-ambient environments without derating
I_D(cont)	-21 A @ T_C = 25 °C - Sustains full-rated current with adequate heatsinking; derates linearly above 25 °C

Pinout & Package

IRFP9140 uses the TO-247AC package - a high-voltage variant of JEDEC TO-247 with isolated central mounting hole, 0.24 °C/W R_thCS, and creepage distance compliant with industrial safety standards. The case serves as the Drain terminal.

Pin/Terminal	Circuit Role	Design Meaning
1 (Gate)	Control input	Accepts -10 V to -20 V for full enhancement; threshold range -2.0 V to -4.0 V enables compatibility with logic-level and dedicated gate drivers
2 (Drain)	High-side power output	Connected to case; electrically tied to heatsink - requires isolation when heatsink is grounded or at system potential
3 (Source)	Power return/reference	Serves as common node for load return path; defines gate-source reference for drive circuitry
4 (Drain)	Redundant drain connection	Second drain lead improves current sharing and reduces package inductance; must be connected to same potential as Pin 2

Key Features

Feature	Design Value
Repetitive avalanche rated	Rated for I_AR = -21 A and E_AR = 18 mJ - enables reliable operation under short-circuit or overload transients without immediate failure
Dynamic dV/dt immunity	-5.5 V/ns - prevents false turn-on during rapid voltage transitions in noisy motor drive or SMPS environments
Isolated mounting hole	Central screw hole electrically isolated from all terminals - allows direct mechanical attachment to grounded heatsinks without insulation washers
Fast body diode	t_rr = 130–260 ns, Q_rr = 0.35–0.70 μC - minimizes reverse recovery loss and EMI in synchronous rectification or freewheeling paths
175 °C operating temperature	Maximum junction temperature rating - supports extended lifetime in enclosed industrial controls and automotive under-hood auxiliary supplies

Applications

Industrial Motor Control	Telecom DC-DC Conversion
Use Scenario: High-side switch in half-bridge inverters driving brushed DC motors in factory automation systems. IC Role / Device Role / Timing Role: P-channel MOSFET providing controlled high-side power delivery with integrated body diode for freewheeling. Use Value: -100 V rating handles back-EMF spikes; 0.20 Ω R_DS(on) limits conduction loss at 15 A loads; isolated mounting simplifies heatsink integration.	Use Scenario: Input-stage switch in -48 V intermediate bus converters for telecom base station power distribution. IC Role / Device Role / Timing Role: Primary high-side switch enabling efficient buck regulation from negative input rails. Use Value: Repetitive avalanche rating absorbs line transients; -5.5 V/ns dV/dt immunity ensures stable operation amid high-frequency noise on shared backplanes.
Uninterruptible Power Supplies	Automotive Auxiliary Power
Use Scenario: Battery disconnect and polarity protection in online UPS systems with dual -48 V battery banks. IC Role / Device Role / Timing Role: Bidirectional blocking switch controlling battery-to-inverter path with reverse-current prevention. Use Value: Body diode V_SD = -5.0 V at -21 A enables low-loss reverse conduction; 960 mJ E_AS withstands surge events during battery switchover.	Use Scenario: Load switch for 24 V commercial vehicle subsystems requiring reverse-polarity protection and hot-swap capability. IC Role / Device Role / Timing Role: High-side protection switch isolating downstream electronics from battery faults. Use Value: -100 V V_DS accommodates load dump transients up to +100 V; 175 °C T_J(max) ensures reliability in engine compartment environments.

Industrial Motor Control

Telecom DC-DC Conversion

Use Scenario: High-side switch in half-bridge inverters driving brushed DC motors in factory automation systems.

IC Role / Device Role / Timing Role: P-channel MOSFET providing controlled high-side power delivery with integrated body diode for freewheeling.

Use Value: -100 V rating handles back-EMF spikes; 0.20 Ω R_DS(on) limits conduction loss at 15 A loads; isolated mounting simplifies heatsink integration.

Use Scenario: Input-stage switch in -48 V intermediate bus converters for telecom base station power distribution.

IC Role / Device Role / Timing Role: Primary high-side switch enabling efficient buck regulation from negative input rails.

Use Value: Repetitive avalanche rating absorbs line transients; -5.5 V/ns dV/dt immunity ensures stable operation amid high-frequency noise on shared backplanes.

Uninterruptible Power Supplies

Automotive Auxiliary Power

Use Scenario: Battery disconnect and polarity protection in online UPS systems with dual -48 V battery banks.

IC Role / Device Role / Timing Role: Bidirectional blocking switch controlling battery-to-inverter path with reverse-current prevention.

Use Value: Body diode V_SD = -5.0 V at -21 A enables low-loss reverse conduction; 960 mJ E_AS withstands surge events during battery switchover.

Use Scenario: Load switch for 24 V commercial vehicle subsystems requiring reverse-polarity protection and hot-swap capability.

IC Role / Device Role / Timing Role: High-side protection switch isolating downstream electronics from battery faults.

Use Value: -100 V V_DS accommodates load dump transients up to +100 V; 175 °C T_J(max) ensures reliability in engine compartment environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP9NK90ZFP	900 V V_DS, 0.95 Ω R_DS(on), TO-220FP package, no isolated mounting hole	Higher voltage, lower current, smaller package - suited for lower-power flyback or ZVS converters	Choose for cost-sensitive 900 V designs where thermal mass and avalanche robustness are secondary
IXTP12P10P	100 V V_DS, 0.18 Ω R_DS(on), TO-220 package, no avalanche rating	Lower R_DS(on) but lacks repetitive avalanche and isolated mounting - limited to non-inductive or protected loads	Choose only if gate drive is optimized for -10 V and system includes external clamping; not drop-in for IRFP9140's ruggedness requirements

Compared with STP9NK90ZFP and IXTP12P10P, the IRFP9140 uniquely combines -100 V rating, 0.20 Ω on-resistance, repetitive avalanche capability, and TO-247AC's isolated mounting - making it irreplaceable in high-reliability industrial switching where thermal, electrical, and mechanical robustness are co-dependent.

Availability

IRFP9140 is available at Aetrix Electronics and suitable for industrial motor control, telecom DC-DC conversion, and uninterruptible power supplies requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for IRFP9140 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 power MOSFETs, diodes, and optoelectronics for industrial, automotive, and computing markets.

The IRFP9140 belongs to Vishay's third-generation high-voltage power MOSFET family, engineered for ruggedized switching in demanding power conversion and motor drive applications where avalanche tolerance and thermal stability are critical.

FAQ

What is the maximum continuous drain current rating for IRFP9140 at 100 °C case temperature?

The IRFP9140 supports -15 A continuous drain current at T_C = 100 °C, per its absolute maximum ratings table. This derating reflects thermal limitations of the TO-247AC package and ensures junction temperature remains within the +175 °C limit under steady-state conduction. Designers must verify heatsink performance using R_thJC = 0.83 °C/W and R_thCS = 0.24 °C/W to maintain safe operation. The IRFP9140 maintains full functionality across this range without parameter shift.

Does IRFP9140 have a specified avalanche energy rating, and is it suitable for unclamped inductive switching?

Yes, the IRFP9140 is explicitly rated for single-pulse avalanche energy E_AS = 960 mJ and repetitive avalanche current I_AR = -21 A with E_AR = 18 mJ. These values are measured under defined test conditions (V_DD = -25 V, L = 3.3 mH, R_g = 25 Ω) and confirm suitability for unclamped inductive turn-off in motor drives and relay drivers. The IRFP9140's ruggedized die design sustains these events without degradation when operated within datasheet limits.

What is the gate threshold voltage range for IRFP9140, and how does it affect drive circuit design?

The IRFP9140 has a gate-source threshold voltage V_GS(th) ranging from -2.0 V to -4.0 V at I_D = -250 μA. This wide range means full enhancement requires V_GS ≤ -10 V to guarantee R_DS(on) ≤ 0.20 Ω. Drive circuits must deliver sufficient negative voltage swing and current (Q_g = 61 nC) to achieve fast t_d(on) = 16 ns and t_r = 73 ns. The IRFP9140's threshold behavior necessitates careful gate resistor selection to balance switching speed and ringing suppression.

Can IRFP9140 be paralleled with identical units, and what design considerations apply?

Yes, the IRFP9140 is designed for ease of paralleling, as stated in its features list. Successful parallel operation requires matched gate drive impedance, symmetrical PCB layout, and individual gate resistors to prevent oscillation. Thermal coupling between devices must be uniform to avoid current imbalance due to R_DS(on)'s negative temperature coefficient. The IRFP9140's consistent parametric spread and TO-247AC thermal symmetry make it well-suited for high-current applications where single-device limits are exceeded.

What is the body diode forward voltage of IRFP9140, and how does it impact freewheeling efficiency?

The IRFP9140 body diode exhibits V_SD = -5.0 V at I_S = -21 A and T_J = 25 °C, per its datasheet specifications. While higher than Schottky diodes, this voltage is typical for silicon P-channel MOSFETs and directly impacts conduction loss during freewheeling intervals. Designers should account for this drop in efficiency calculations and consider synchronous rectification or external diode clamping where ultra-low loss is required. The IRFP9140's body diode remains fully functional across its -5 to +175 °C operating range.

IRFP9140 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Package/Case:: TO-247-3

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:: 21A (Tc)

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

Rds On (Max) @ Id, Vgs:: 200mOhm @ 13A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 61 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1400 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 180W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-247AC

IRFP9140 FAQ

1.How can I place an order for IRFP9140 through Aetrix?

Please submit a Request for Quotation (RFQ) for IRFP9140 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 IRFP9140 reliable?

The price and inventory of IRFP9140 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFP9140 is usually 5 days.

3.What payment methods are accepted for IRFP9140?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFP9140 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRFP9140?

IRFP9140 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRFP9140 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 IRFP9140?

For technical support, including IRFP9140 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFP9140 requirements.

6.How does Aetrix verify that IRFP9140 is sourced from the original manufacturer or authorized distributors?

All IRFP9140 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 IRFP9140 meets industry standards.

7.What is the process for return or replacement of IRFP9140?

All IRFP9140 units undergo pre-shipment inspection (PSI). If there is an issue with IRFP9140, 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 IRFP9140 part is unused and in its original packaging.

Return procedure for IRFP9140:

1.Submit a request within 90 days.

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

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