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Infineon Technologies BTS244Z E3043

Name: BTS244Z E3043
Brand: Infineon Technologies
SKU: BTS244Z E3043
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BTS244Z E3043

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-220-5

Datasheet:: BTS244Z E3043.pdf

Description:: MOSFET N-CH 55V 35A TO220-5-43

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BTS244Z E3043 from Infineon Technologies is a Speed TEMPFET® N-channel logic-level power MOSFET with integrated potential-free thyristor-based temperature sensor, rated for 55 V V_DS, 13 mΩ R_DS(on) at V_GS = 10 V, and 35 A continuous drain current at T_C = 100 °C; used in automotive load switching with overtemperature protection and analog temperature sensing.

For engineers reviewing the BTS244Z E3043 datasheet, BTS244Z E3043 pinout, BTS244Z E3043 application, or BTS244Z E3043 equivalent, key selection factors include its dual-function integration (power switch + self-resetting thermal trip), avalanche energy rating (1.65 J), fast switching capability up to 1 MHz, and AEC-Q101 qualification for under-hood automotive use.

Technical Context

The BTS244Z combines a robust N-channel MOSFET with an independent thyristor-type temperature sensor that latches at ~160 °C (typ.) and resets only after voltage removal and recovery delay (~150 μs). Its gate threshold (1.2–2.0 V) enables direct microcontroller drive without level-shifting.

Dynamic performance is defined by low gate charge (Q_g(total) = 85–130 nC), fast turn-on/turn-off times (t_d(on) ≤ 25 ns, t_f ≤ 40 ns), and optimized capacitance (C_iss = 2130–2660 pF), supporting high-frequency PWM control in motor drivers and DC-DC converters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - Maximum blocking voltage compatible with 48 V automotive systems and industrial 24–48 V rails.
R_DS(on)	11.5–13 mΩ @ V_GS = 10 V - Enables <1 W conduction loss at 35 A, reducing heatsink requirements.
I_D(cont)	35 A @ T_C = 100 °C - Sustains high-current loads such as fuel pumps, radiator fans, and solenoids.
E_AS	1.65 J - Withstands single-pulse inductive energy spikes without failure, critical for relay replacement.
T_TS(on)	150–170 °C - Thermal trip point ensures reliable overtemperature shutdown before silicon damage occurs.
t_off (sensor)	0.5–2.5 μs - Fast thyristor turn-off enables rapid fault response in safety-critical circuits.
Q_g(total)	85–130 nC - Low gate charge reduces driver power demand and simplifies gate-drive design.

Pinout & Package

Package: PG-TO220-5-3 (standard 5-pin TO-220 variant with isolated tab; RoHS-compliant, green product).

Pin/Terminal	Circuit Role	Design Meaning
1 - G	Gate	Logic-level input controlling MOSFET conduction; compatible with 3.3 V/5 V microcontrollers.
2 - A	Anode (Temp Sensor)	Thyristor anode terminal; connects to supply rail for temperature-sensing circuit biasing.
3 - D	Drain	Main power output node; electrically connected to metal tab for thermal conduction and high-current path.
4 - K	Cathode (Temp Sensor)	Thyristor cathode; used with external resistor to set trip/reset thresholds and detect latch state.
5 - S	Source	Power return and reference for gate drive; common connection point for current sensing and feedback.

Key Features

Feature	Design Value
Integrated temperature sensor	Self-latching thyristor structure with 160 °C typ. trip point and <150 μs recovery-eliminates external thermal ICs and discrete protection logic.
Avalanche-rated operation	1.65 J single-pulse energy rating ensures ruggedness against inductive kickback in motor and solenoid drives.
Logic-level gate drive	V_GS(th) = 1.2–2.0 V enables direct interface with low-voltage MCUs without gate drivers or level shifters.
Fast switching (≤1 MHz)	Low C_iss/C_oss and Q_g support high-frequency PWM for efficiency-critical applications like LED dimming and DC-DC regulation.
AEC-Q101 qualified	Validated for automotive under-hood environments including temperature cycling, humidity, and mechanical shock per ISO/TS 16949.

Applications

Engine Cooling Fan Control

Fuel Pump Driver

Use Scenario: Regulating 12–48 V brushed DC fan speed via PWM in engine bay under ambient temperatures up to 125 °C.

IC Role / Device Role / Timing Role: Power switch and real-time thermal protector-shuts down fan if motor winding overheats or airflow fails.

Use Value: Prevents fan seizure-induced engine overheating; eliminates need for separate thermal fuse or NTC+comparator circuit.

Use Scenario: Driving high-current (20–30 A) automotive fuel pumps with short-circuit and overtemperature fault handling.

IC Role / Device Role / Timing Role: Primary load switch with integrated overtemperature latch and fast turn-off (<2.5 μs) for fault containment.

Use Value: Reduces BOM count by replacing discrete MOSFET + thermal cutoff + driver IC; supports ISO 16750-2 load dump compliance.

Transmission Solenoid Actuator

Electric Power Steering (EPS) Motor Phase Switch

Use Scenario: Controlling hydraulic pressure solenoids in automatic transmissions exposed to vibration and thermal transients.

IC Role / Device Role / Timing Role: High-reliability power switch with built-in thermal trip and avalanche energy absorption during gear-shift surges.

Use Value: Ensures fail-safe deactivation when solenoid coil resistance drifts or oil cooling fails-prevents valve stiction or hydraulic lock.

Use Scenario: Implementing phase-leg switching in 48 V EPS motor inverters requiring fast, low-loss, and thermally robust FETs.

IC Role / Device Role / Timing Role: Half-bridge high-side or low-side switch with integrated temperature monitoring for motor winding hot-spot detection.

Use Value: Enables predictive thermal derating and graceful torque reduction before MOSFET thermal runaway-critical for ASIL-B functional safety.

Equivalent & Alternatives

The following parts are listed as comparable options for similar smart power switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BTS244R E3043	Same die, different package: PG-TO263-5 (D²PAK); higher R_thJA (40 K/W vs. 33 K/W) but surface-mount compatible.	Preferred for automated SMT assembly; less effective heat dissipation than TO-220-5 in high-power density designs.	Select for PCB space constraints where thermal margin allows.
IPB180N04S4-02	40 V V_DS, 2.0 mΩ R_DS(on), no integrated temperature sensor; requires external thermal protection circuitry.	Higher efficiency at low voltage but lacks self-protection-unsuitable for standalone thermal trip applications.	Choose only when external thermal management is already implemented and lower R_DS(on) justifies added complexity.

Compared with BTS244R E3043, the BTS244Z E3043 offers superior thermal performance in through-hole mounting; versus IPB180N04S4-02, it trades marginal conduction loss for autonomous thermal safety-critical where system-level fault response time must be sub-millisecond.

Availability

BTS244Z E3043 is available at Aetrix Electronics and suitable for automotive engine control units, transmission control modules, and electric power steering systems requiring stable component supply, long lifecycle support, and AEC-Q101 compliance.

Supply support for BTS244Z E3043 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 German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and quality certification to IATF 16949.

The Speed TEMPFET® product line delivers intelligent power switches combining MOSFETs with integrated thermal protection, designed specifically for automotive load driving where reliability, self-protection, and space savings are mandatory.

FAQ

What is the thermal trip behavior of the BTS244Z E3043?

The BTS244Z E3043 incorporates a thyristor-based temperature sensor that latches ON when junction temperature exceeds 150–170 °C. It remains latched until the anode-cathode voltage drops below 0.5 V and stays there for ≥100 μs, followed by ~150 μs recovery before normal operation resumes. This provides irreversible fault signaling until reset conditions are met.

Can the BTS244Z E3043 be driven directly by a 3.3 V microcontroller?

Yes-the device has a logic-level gate threshold (V_GS(th) = 1.2–2.0 V) and is fully specified at V_GS = 4.5 V. A 3.3 V GPIO can reliably turn it ON, though R_DS(on) will be higher (~16 mΩ) than at 10 V. For minimal conduction loss, use 5 V drive or add a simple level shifter.

How does the integrated temperature sensor differ from an NTC thermistor solution?

Unlike NTCs, which require ADC measurement and software interpretation, the BTS244Z's thyristor sensor provides immediate, hardware-level latching at a precise temperature threshold. It delivers deterministic, sub-microsecond fault response without firmware involvement-essential for functional safety in ASIL-B/C systems.

Is the metal tab electrically isolated in the PG-TO220-5-3 package?

Yes-the drain (Pin 3) and metal tab are internally connected, but the tab is electrically isolated from pins 1, 2, 4, and 5 per PG-TO220-5-3 mechanical specification. This allows direct heatsink mounting without insulating pads, provided the heatsink is not referenced to other circuit potentials.

BTS244Z E3043 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: TEMPFET®

Package/Case:: TO-220-5

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 55 V

Current - Continuous Drain (Id) @ 25°C:: 35A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 13mOhm @ 19A, 10V

Vgs(th) (Max) @ Id:: 2V @ 130µA

Gate Charge (Qg) (Max) @ Vgs:: 130 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2660 pF @ 25 V

FET Feature:: Temperature Sensing Diode

Power Dissipation (Max):: 170W (Tc)

Operating Temperature:: -40°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: P-TO220-5-43

BTS244Z E3043 FAQ

1.How can I place an order for BTS244Z E3043 through Aetrix?

Please submit a Request for Quotation (RFQ) for BTS244Z E3043 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 BTS244Z E3043 reliable?

The price and inventory of BTS244Z E3043 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTS244Z E3043 is usually 5 days.

3.What payment methods are accepted for BTS244Z E3043?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTS244Z E3043 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BTS244Z E3043?

BTS244Z E3043 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BTS244Z E3043 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 BTS244Z E3043?

For technical support, including BTS244Z E3043 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTS244Z E3043 requirements.

6.How does Aetrix verify that BTS244Z E3043 is sourced from the original manufacturer or authorized distributors?

All BTS244Z E3043 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 BTS244Z E3043 meets industry standards.

7.What is the process for return or replacement of BTS244Z E3043?

All BTS244Z E3043 units undergo pre-shipment inspection (PSI). If there is an issue with BTS244Z E3043, 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 BTS244Z E3043 part is unused and in its original packaging.

Return procedure for BTS244Z E3043:

1.Submit a request within 90 days.

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

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