Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Vishay Siliconix IRF644STRRPBF

Name: IRF644STRRPBF
Brand: Vishay Siliconix
SKU: IRF644STRRPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: IRF644STRRPBF

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: IRF644STRRPBF.pdf

Description:: MOSFET N-CH 250V 14A D2PAK

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:605

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

IRF644STRRPBF from Vishay Siliconix is a 250 V, 14 A N-channel surface-mount power MOSFET in D2PAK (TO-263) package, featuring 0.28 Ω R_DS(on) at V_GS = 10 V, 68 nC total gate charge, and repetitive avalanche rating-designed for high-current DC-DC converters, motor control stages, and industrial power supplies.

For engineers reviewing the IRF644STRRPBF datasheet, IRF644STRRPBF pinout, IRF644STRRPBF application, or IRF644STRRPBF equivalent, this part supports fast-switching, rugged unclamped inductive switching, and parallel operation with low gate drive requirements-key considerations for high-reliability power stage design.

Technical Context

This third-generation power MOSFET uses planar V-groove silicon technology optimized for low conduction loss and robust avalanche performance. Its dynamic dv/dt rating of 4.8 V/ns and 550 mJ single-pulse avalanche energy enable stable operation in hard-switched topologies with inductive loads.

The device integrates an intrinsic body diode with 1.8 V forward voltage at 14 A and 250–500 ns reverse recovery time, supporting synchronous rectification and freewheeling functions without external diodes in many medium-voltage applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	250 V - Maximum blocking voltage for use in 200 V bus systems with safety margin
R_DS(on)	0.28 Ω @ V_GS = 10 V - Enables ≤3.9 W conduction loss at 14 A continuous drain current
Q_g	68 nC - Determines gate driver power requirement and switching speed in hard-switched circuits
I_D (T_C = 25 °C)	14 A - Continuous current capability when mounted on heatsink; derates to 8.5 A at 100 °C case
E_AS	550 mJ - Supports reliable unclamped inductive switching without external snubbers
T_J Range	−55 to +150 °C - Qualified for industrial and extended-temperature embedded power systems
R_thJC	1.0 °C/W - Enables efficient thermal path to heatsink; critical for high-power density layout

Pinout & Package

D2PAK (TO-263) surface-mount package with exposed drain pad for thermal and electrical connection; 3-pin configuration optimized for high-current PCB mounting and automated assembly.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (G)	Gate	Control terminal requiring ≤±20 V drive; low input capacitance (1300 pF C_iss) eases driver selection
Pin 2 (D)	Drain	Main high-side power terminal; electrically and thermally connected to exposed backside metal pad
Pin 3 (S)	Source	Power return and gate reference node; internal source inductance (7.5 nH) affects high-speed switching behavior

Key Features

Feature	Design Value
Repetitive avalanche rated	13 mJ per pulse - Enables robust operation under transient overloads without derating
Dynamic dv/dt immunity	4.8 V/ns - Reduces risk of false turn-on in high-noise bridge configurations
Fast switching	td(on) = 11 ns, tf = 49 ns - Supports >100 kHz switching in SMPS with low switching loss
Low gate charge	Q_gs = 11 nC, Q_gd = 35 nC - Minimizes Miller plateau duration and improves controllability
Surface-mount packaging	D2PAK footprint - Delivers 125 W power dissipation with standard reflow profiles and no through-hole constraints

Applications

Industrial Motor Drives	DC-DC Converters
Use Scenario: Half-bridge gate driver stage in 24–48 V BLDC motor controllers. IC Role / Device Role / Timing Role: High-side N-channel switch handling 10–14 A peak load current with PWM up to 20 kHz. Use Value: Low R_DS(on) and avalanche rating eliminate need for external clamping in inductive kickback events.	Use Scenario: Primary-side switch in isolated flyback or forward converters for industrial power supplies. IC Role / Device Role / Timing Role: Main power switch operating at 65–100 kHz with 200 V input bus. Use Value: 550 mJ E_AS ensures safe operation during output short-circuit or transformer saturation events.
Uninterruptible Power Supplies	LED Constant-Current Drivers
Use Scenario: Battery-charging FET and inverter H-bridge in 12/24 V offline UPS units. IC Role / Device Role / Timing Role: Bidirectional switching element managing battery-to-bus and bus-to-inverter paths. Use Value: Repetitive avalanche capability sustains reliability during frequent AC line dropouts and load transients.	Use Scenario: Series-pass switch in high-power constant-current LED drivers for street lighting. IC Role / Device Role / Timing Role: Linear or PWM-controlled current regulator dissipating up to 30 W continuously. Use Value: 1.0 °C/W R_thJC enables direct heatsink mounting for stable thermal management at 14 A DC.

Industrial Motor Drives

DC-DC Converters

Use Scenario: Half-bridge gate driver stage in 24–48 V BLDC motor controllers.

IC Role / Device Role / Timing Role: High-side N-channel switch handling 10–14 A peak load current with PWM up to 20 kHz.

Use Value: Low R_DS(on) and avalanche rating eliminate need for external clamping in inductive kickback events.

Use Scenario: Primary-side switch in isolated flyback or forward converters for industrial power supplies.

IC Role / Device Role / Timing Role: Main power switch operating at 65–100 kHz with 200 V input bus.

Use Value: 550 mJ E_AS ensures safe operation during output short-circuit or transformer saturation events.

Uninterruptible Power Supplies

LED Constant-Current Drivers

Use Scenario: Battery-charging FET and inverter H-bridge in 12/24 V offline UPS units.

IC Role / Device Role / Timing Role: Bidirectional switching element managing battery-to-bus and bus-to-inverter paths.

Use Value: Repetitive avalanche capability sustains reliability during frequent AC line dropouts and load transients.

Use Scenario: Series-pass switch in high-power constant-current LED drivers for street lighting.

IC Role / Device Role / Timing Role: Linear or PWM-controlled current regulator dissipating up to 30 W continuously.

Use Value: 1.0 °C/W R_thJC enables direct heatsink mounting for stable thermal management at 14 A DC.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP20NM50FP	500 V V_DS, 20 A I_D, 0.23 Ω R_DS(on), TO-220FP package	Higher voltage rating but through-hole mounting; lower thermal resistance to ambient via heatsink	Prefer when board space allows through-hole heatsinking and 500 V isolation is required
IXTP12N25P	250 V V_DS, 12 A I_D, 0.27 Ω R_DS(on), TO-220 package, no avalanche rating	Similar voltage/current but lacks repetitive avalanche spec and surface-mount compatibility	Consider only for cost-sensitive, non-avalanche-critical linear or low-duty-cycle switching roles

Compared with IRF644STRRPBF, STP20NM50FP offers higher voltage headroom and higher current but requires PCB real estate for TO-220 mounting, while IXTP12N25P trades avalanche ruggedness and SMT compatibility for lower gate charge and legacy package familiarity-neither is pin-compatible, and both demand layout revision.

Availability

IRF644STRRPBF is available at Aetrix Electronics and suitable for industrial motor drives, DC-DC power conversion, and uninterruptible power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for IRF644STRRPBF 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 IRF644STRRPBF belongs to Vishay's third-generation surface-mount power MOSFET family, engineered for ruggedized switching in high-current, medium-voltage power stages where avalanche tolerance and thermal efficiency are critical.

FAQ

What is the maximum continuous drain current for IRF644STRRPBF at 100 °C case temperature?

The IRF644STRRPBF supports 8.5 A continuous drain current at T_C = 100 °C, as specified in its Absolute Maximum Ratings table. This derating reflects thermal limits of the D2PAK package and ensures junction temperature remains within −55 to +150 °C operational range under sustained load conditions. Designers must verify heatsink interface and PCB copper area to maintain this rating in actual layouts.

Does IRF644STRRPBF have avalanche capability, and how is it rated?

Yes, IRF644STRRPBF is repetitively avalanche rated with 13 mJ per pulse (E_AR) and 550 mJ single-pulse energy (E_AS). These values are measured under defined test conditions (V_DD = 50 V, L = 4.5 mH, I_AS = 14 A), confirming suitability for inductive switching without external protection. The device's ruggedized die design enables reliable operation in hard-switched topologies where voltage overshoot occurs.

What is the gate threshold voltage range for IRF644STRRPBF?

The gate-source threshold voltage (V_GS(th)) for IRF644STRRPBF is specified from 2.0 V to 4.0 V at V_DS = V_GS and I_D = 250 μA. This range indicates the minimum gate voltage needed to begin channel conduction. Full enhancement requires ≥10 V drive to achieve the rated 0.28 Ω R_DS(on); logic-level gate drivers are not sufficient without level-shifting.

Can IRF644STRRPBF be paralleled with identical units, and what design considerations apply?

Yes, IRF644STRRPBF is designed for ease of paralleling due to its positive temperature coefficient of R_DS(on), which promotes current sharing. Key considerations include matched gate drive impedance (<5 Ω per device), symmetrical PCB layout with equal trace lengths, and shared thermal mass to minimize thermal imbalance. The datasheet confirms this capability as a key feature for high-current system scaling.

What is the body diode forward voltage of IRF644STRRPBF at 14 A and 25 °C?

The body diode forward voltage (V_SD) of IRF644STRRPBF is rated at ≤1.8 V at I_S = 14 A and T_J = 25 °C with V_GS = 0 V. This parameter defines conduction loss during freewheeling or synchronous rectification phases. At elevated temperatures, V_SD decreases slightly, but designers should account for reverse recovery charge (Q_rr = 2.3–4.6 μC) in snubber and EMI calculations.

IRF644STRRPBF Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 250 V

Current - Continuous Drain (Id) @ 25°C:: 14A (Tc)

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

Rds On (Max) @ Id, Vgs:: 280mOhm @ 8.4A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 68 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 1300 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 3.1W (Ta), 125W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-263 (D2PAK)

IRF644STRRPBF FAQ

1.How can I place an order for IRF644STRRPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRF644STRRPBF 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 IRF644STRRPBF reliable?

The price and inventory of IRF644STRRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRF644STRRPBF is usually 5 days.

3.What payment methods are accepted for IRF644STRRPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRF644STRRPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRF644STRRPBF?

IRF644STRRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRF644STRRPBF 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 IRF644STRRPBF?

For technical support, including IRF644STRRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRF644STRRPBF requirements.

6.How does Aetrix verify that IRF644STRRPBF is sourced from the original manufacturer or authorized distributors?

All IRF644STRRPBF 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 IRF644STRRPBF meets industry standards.

7.What is the process for return or replacement of IRF644STRRPBF?

All IRF644STRRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRF644STRRPBF, 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 IRF644STRRPBF part is unused and in its original packaging.

Return procedure for IRF644STRRPBF:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-11 Comparator Circuit: Voltage Thresholds, Op-Amp Differences, LM393 and Practical Design

Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …