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

Vishay Siliconix IRCZ44PBF

Name: IRCZ44PBF
Brand: Vishay Siliconix
SKU: IRCZ44PBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRCZ44PBF

Manufacturer:: Vishay Siliconix

Category:: FETs, MOSFETs

Package:: TO-220-5

Datasheet:: IRCZ44PBF.pdf

Description:: MOSFET N-CH 60V 50A TO220-5

Quantity:: RFQ Add To RFQ list

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Product details

Overview

IRCZ44PBF from Infineon Technologies (formerly International Rectifier) is a 60V, 50A HEXFET® Power MOSFET with integrated current-sensing capability (HEXSense), TO-220 package, R_DS(on) = 0.028Ω at V_GS = 10V, and 175°C maximum junction temperature - used in high-current DC-DC converters and motor drive half-bridges.

For engineers reviewing the IRCZ44PBF datasheet, IRCZ44PBF pinout, IRCZ44PBF application, or IRCZ44PBF equivalent, key selection considerations include its Kelvin-source sensing terminals, dv/dt ruggedness (4.5 V/ns), fast switching (t_on = 19 ns, t_off = 55 ns), and thermal derating (1.0 W/°C above 25°C case temperature).

Technical Context

The IRCZ44PBF implements a third-generation HEXFET architecture with dual-source Kelvin connection for accurate current sensing (r = 2460–2720:1), eliminating common-source inductance errors during high-di/dt switching. Its body diode exhibits t_rr = 140–300 ns and Q_rr = 1.2–2.8 nC at 52A.

It features enhanced avalanche robustness (E_AS = 30 mJ), rated for repetitive pulsed drain current up to 210 A, and operates across –55°C to +175°C junction range with gate threshold voltage V_GS(th) = 2.0–4.0 V and total gate charge Q_g = 95 nC at V_DS = 48 V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	60 V - Maximum blocking voltage before avalanche; defines use in ≤48 V bus systems with margin.
R_DS(on)	0.028 Ω @ V_GS = 10 V - Enables <1.5 W conduction loss at 50 A DC, critical for thermal management.
I_D (T_C = 25°C)	50 A - Continuous drain current rating at heatsink-mounted condition; requires ≥150 W thermal path.
Q_g	95 nC - Gate drive energy demand; determines minimum gate driver peak current (≥1 A for 100 ns rise).
Sense Ratio (r)	2460–2720:1 - Delivers ~20 mA sense current at 52 A main drain current; enables direct ADC interfacing.
t_rr / Q_rr	140–300 ns / 1.2–2.8 nC - Body diode recovery behavior impacts synchronous rectification losses and EMI in hard-switched topologies.
T_J(max)	+175°C - Allows operation in sealed enclosures or high-ambient industrial environments without derating.

Pinout & Package

TO-220 HexSense package with 3 main terminals (Drain, Source, Gate) plus 2 dedicated Kelvin sense leads (S_ENSE, S_ENSE–). Drain tab is electrically connected to lead 2; source and sense-source are isolated internally.

Pin/Terminal	Circuit Role	Design Meaning
Lead 1 (G)	Gate	Control terminal; accepts 0–20 V logic-level drive; 95 nC total charge requires robust gate driver.
Lead 2 (D)	Drain	Main high-side power terminal; electrically tied to metal tab; must be insulated if mounted to heatsink.
Lead 3 (S)	Power Source	Main low-side return path; carries full load current; connects to PCB ground plane or bus bar.
Lead 4 (S_ENSE)	Kelvin Sense Source (+)	Current-sensing output; delivers scaled replica of I_D (1:2460–2720); routed separately to avoid noise coupling.
Lead 5 (S_ENSE–)	Kelvin Sense Source (–)	Reference return for sense current; must tie directly to power source ground near die, not PCB ground plane.

Key Features

Feature	Design Value
HEXSense current monitoring	Integrated 2460–2720:1 current mirror with dedicated Kelvin source pins eliminates PCB trace inductance error in real-time current feedback loops.
dv/dt ruggedness	Rated for 4.5 V/ns peak diode recovery dv/dt - prevents false turn-on in high-speed bridge configurations with fast voltage transients.
High-temperature operation	Rated for continuous operation up to +175°C junction temperature - supports compact thermal design in sealed motor drives and EV auxiliary converters.
Low gate charge	Q_g = 95 nC enables efficient switching at 100–500 kHz with standard gate drivers, reducing drive-stage component count and cost.
Fast body diode	t_rr = 140 ns typical and Q_rr = 1.2 nC support reduced switching loss in non-synchronous flyback and buck-boost topologies.

Applications

Motor Drive Half-Bridge	Industrial DC-DC Converter
Use Scenario: High-current BLDC motor phase leg in HVAC blowers or pump inverters operating at 20–40 kHz PWM. IC Role / Device Role / Timing Role: Main switching element in high-side or low-side position; HEXSense provides real-time overcurrent protection independent of shunt resistor. Use Value: Eliminates need for external current shunt and isolation amplifier, reducing BOM cost and board area while improving fault response time by >2 µs.	Use Scenario: Primary-side switch in 48 V input, 12 V output 500 W isolated forward converter for factory automation PLCs. IC Role / Device Role / Timing Role: High-efficiency power switch with integrated current sensing for cycle-by-cycle peak current mode control. Use Value: Enables precise current limiting without compromising regulation bandwidth; supports stable operation under wide input voltage and load transients.
UPS Inverter Stage	EV Auxiliary Power Module
Use Scenario: Bidirectional 60 V battery interface in online UPS systems requiring reverse conduction and fast fault detection. IC Role / Device Role / Timing Role: Synchronous rectifier and active switch; body diode and HEXSense jointly enable zero-voltage switching and short-circuit shutdown. Use Value: Reduces conduction loss by 30% vs. discrete diode solution and cuts fault detection latency to <500 ns using analog sense current.	Use Scenario: 12 V/24 V DC-DC converter supplying infotainment and ADAS modules from 400 V traction battery via step-down stage. IC Role / Device Role / Timing Role: High-reliability primary switch rated for automotive temperature cycling and vibration; senses load current for thermal derating and diagnostics. Use Value: Meets AEC-Q101 stress requirements via 175°C rating and supports functional safety ASIL-B diagnostics through calibrated current feedback.

Motor Drive Half-Bridge

Industrial DC-DC Converter

Use Scenario: High-current BLDC motor phase leg in HVAC blowers or pump inverters operating at 20–40 kHz PWM.

IC Role / Device Role / Timing Role: Main switching element in high-side or low-side position; HEXSense provides real-time overcurrent protection independent of shunt resistor.

Use Value: Eliminates need for external current shunt and isolation amplifier, reducing BOM cost and board area while improving fault response time by >2 µs.

Use Scenario: Primary-side switch in 48 V input, 12 V output 500 W isolated forward converter for factory automation PLCs.

IC Role / Device Role / Timing Role: High-efficiency power switch with integrated current sensing for cycle-by-cycle peak current mode control.

Use Value: Enables precise current limiting without compromising regulation bandwidth; supports stable operation under wide input voltage and load transients.

UPS Inverter Stage

EV Auxiliary Power Module

Use Scenario: Bidirectional 60 V battery interface in online UPS systems requiring reverse conduction and fast fault detection.

IC Role / Device Role / Timing Role: Synchronous rectifier and active switch; body diode and HEXSense jointly enable zero-voltage switching and short-circuit shutdown.

Use Value: Reduces conduction loss by 30% vs. discrete diode solution and cuts fault detection latency to <500 ns using analog sense current.

Use Scenario: 12 V/24 V DC-DC converter supplying infotainment and ADAS modules from 400 V traction battery via step-down stage.

IC Role / Device Role / Timing Role: High-reliability primary switch rated for automotive temperature cycling and vibration; senses load current for thermal derating and diagnostics.

Use Value: Meets AEC-Q101 stress requirements via 175°C rating and supports functional safety ASIL-B diagnostics through calibrated current feedback.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current sensing MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRFZ44NPBF	No current-sense capability; identical V_DSS, R_DS(on), and package but lacks Kelvin source pins and sense ratio.	Requires external shunt + op-amp for current monitoring; unsuitable where space or latency constraints prohibit added components.	Select IRFZ44NPBF only when sensing is handled elsewhere in system and lowest BOM cost is priority.
STP60NF06L	60 V, 60 A, R_DS(on) = 0.018 Ω, no integrated sensing; logic-level gate (V_GS(th) = 1–2.5 V), lower Q_g = 75 nC.	Better efficiency at light loads due to lower R_DS(on), but no built-in current feedback - limits use in closed-loop protection schemes.	Choose STP60NF06L for higher efficiency in non-sensing applications; avoid where real-time current data is required for control or safety.

Compared with IRFZ44NPBF and STP60NF06L, the IRCZ44PBF uniquely integrates precision current mirroring into the TO-220 footprint, enabling single-device current monitoring without signal conditioning - a critical advantage in space-constrained, high-di/dt industrial and automotive power stages.

Availability

IRCZ44PBF is available at Aetrix Electronics and suitable for motor drives, industrial DC-DC converters, and UPS inverter stages requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for IRCZ44PBF 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 global semiconductor leader specializing in power management, sensor, and automotive ICs, with core expertise in silicon and wide-bandgap device physics.

The IRCZ44PBF belongs to Infineon's legacy HEXFET® Power MOSFET product line, designed specifically for high-current, high-ruggedness industrial switching applications demanding integrated current sensing and extended temperature operation.

FAQ

What is the function of the two additional pins on the IRCZ44PBF?

The IRCZ44PBF has two extra pins (S_ENSE and S_ENSE–) that form a Kelvin source connection for its HEXSense current-sensing function. These pins deliver a precise, low-inductance replica of the main drain current (scaled 2460–2720:1) to enable real-time monitoring without interference from PCB layout parasitics. This feature is integral to the IRCZ44PBF's role in closed-loop protection and adaptive control circuits.

Does the IRCZ44PBF require a negative gate voltage for reliable turn-off?

No, the IRCZ44PBF does not require negative gate drive. Its gate threshold voltage is specified from 2.0 V to 4.0 V, and it is fully enhanced at V_GS = 10 V. A gate drive of 0 V reliably holds the device off, and the maximum allowable gate-to-source voltage is ±20 V - making standard 0–12 V or 0–15 V gate drivers sufficient for safe operation of the IRCZ44PBF.

Can the IRCZ44PBF be paralleled with other MOSFETs for higher current handling?

Yes, the IRCZ44PBF is explicitly designed for ease of paralleling, as noted in its datasheet features. Its positive temperature coefficient for R_DS(on) ensures current sharing stability, and the Kelvin source configuration minimizes imbalance caused by common-source inductance. When paralleling multiple IRCZ44PBF units, matched gate drive impedance and symmetrical layout are essential to maintain balanced dynamic current distribution.

What is the maximum recommended PCB trace length between the IRCZ44PBF sense pins and the measurement circuit?

For optimal accuracy, the IRCZ44PBF sense pins (S_ENSE and S_ENSE–) should connect to the measurement circuit with minimal trace length - ideally ≤10 mm and routed as a tightly coupled differential pair. Longer traces introduce noise pickup and series inductance that degrade the fidelity of the 2460–2720:1 current replica. The IRCZ44PBF's sensing performance is validated only when sense leads are kept short and isolated from power and switching node routing.

Is the IRCZ44PBF suitable for automotive applications?

The IRCZ44PBF is not AEC-Q101 qualified, though its 175°C rating and rugged dv/dt performance make it usable in non-safety-critical automotive auxiliary systems (e.g., seat controls, HVAC fans) with proper derating and system-level validation. For ASIL-compliant designs, Infineon offers AEC-Q101 variants like the IPB060N06LG; the IRCZ44PBF itself is intended for industrial and commercial power applications per its original International Rectifier specification.

IRCZ44PBF Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: HEXFET®

Package/Case:: TO-220-5

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 50A (Tc)

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

Rds On (Max) @ Id, Vgs:: 28mOhm @ 31A, 10V

Vgs(th) (Max) @ Id:: 4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 95 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2500 pF @ 25 V

FET Feature:: Current Sensing

Power Dissipation (Max):: 150W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220-5

IRCZ44PBF FAQ

1.How can I place an order for IRCZ44PBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRCZ44PBF 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 IRCZ44PBF reliable?

The price and inventory of IRCZ44PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRCZ44PBF is usually 5 days.

3.What payment methods are accepted for IRCZ44PBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRCZ44PBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRCZ44PBF?

IRCZ44PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRCZ44PBF 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 IRCZ44PBF?

For technical support, including IRCZ44PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRCZ44PBF requirements.

6.How does Aetrix verify that IRCZ44PBF is sourced from the original manufacturer or authorized distributors?

All IRCZ44PBF 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 IRCZ44PBF meets industry standards.

7.What is the process for return or replacement of IRCZ44PBF?

All IRCZ44PBF units undergo pre-shipment inspection (PSI). If there is an issue with IRCZ44PBF, 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 IRCZ44PBF part is unused and in its original packaging.

Return procedure for IRCZ44PBF:

1.Submit a request within 90 days.

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

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