Infineon Technologies BTS244ZE3043AKSA2

Overview

BTS244ZE3043AKSA2 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 26 A nominal load current per ISO 10483, used in automotive body control modules for high-side load switching with overtemperature protection.

For engineers reviewing the BTS244ZE3043AKSA2 datasheet, BTS244ZE3043AKSA2 pinout, BTS244ZE3043AKSA2 application, or BTS244ZE3043AKSA2 equivalent, key selection criteria include its dual-function integration (power switch + self-resetting thermal trip), AEC-Q101 qualification, fast 1 MHz switching capability, and PG-TO220-5-12 package with isolated sensor terminals.

Technical Context

The device integrates a robust N-channel MOSFET and an independent thyristor-type temperature sensor sharing no electrical path between power and sensing domains-enabling true galvanic isolation of thermal monitoring. Its gate threshold voltage (1.2–2.0 V) supports direct microcontroller drive, while avalanche rating (E_AS = 1.65 J) ensures ruggedness against inductive load transients.

Sensor operation relies on forward-biased anode-cathode junction (Pin 2 A / Pin 4 K) with programmable thermal trip point (150–170 °C), resettable via sub-100 μs low-voltage pulse (V_AK(reset) ≤ 0.5 V), and holding current as low as 0.05 mA at 25 °C-enabling precise, latch-free thermal shutdown without external circuitry.

Key Specifications

Pinout & Package

Package: PG-TO220-5-12 - Thermally enhanced through-hole package with isolated tab (Drain-connected), 5-pin layout, RoHS-compliant, AEC-Q101 qualified.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side intelligent power switch applications.

Compared with BTS244Z E3062A, BTS244ZE3043AKSA2 offers identical functionality in through-hole form for manual or wave-soldered assemblies, while IPB180N04S4-02 trades integration for lower conduction loss-requiring added design effort for thermal safety compliance.

Availability

BTS244ZE3043AKSA2 is available at Aetrix Electronics and suitable for automotive body electronics, industrial actuator control, and LED lighting systems requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for BTS244ZE3043AKSA2 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 MOSFET performance with autonomous thermal protection, designed specifically for automotive and industrial high-reliability load switching where functional safety and reduced system complexity are critical.

FAQ

What is the thermal trip behavior and how is it reset?

The BTS244ZE3043AKSA2 triggers thermal shutdown when junction temperature reaches 150–170 °C, causing thyristor latch-on between Pins A and K. Reset is achieved by applying a 100 μs pulse ≤0.5 V across A–K, restoring normal MOSFET operation within 150 μs. No external components are needed-only a low-voltage, low-current pulse source.

Can this device replace a standard MOSFET in existing designs?

Yes, but only if the PCB layout accommodates the 5-pin PG-TO220-5-12 footprint and the application benefits from integrated thermal protection. Pin compatibility with standard TO-220-5 devices is maintained, but Pins 2 (A) and 4 (K) must be actively managed-not left floating-to prevent false trips or latch-up.

What is the maximum safe operating frequency for PWM switching?

The device supports up to 1 MHz PWM operation, validated by gate charge (Q_g(total) = 85–130 nC) and switching times (t_r ≤ 105 ns, t_f ≤ 40 ns). At 1 MHz, total switching loss remains below 1.2 W at 26 A/30 V, assuming adequate gate drive strength (≥2 A peak) and PCB layout minimizing loop inductance.

Is the temperature sensor calibrated, and what is its accuracy?

The sensor's trip point is specified as 150–170 °C (min–max) at V_TS = 5 V, with typical value 160 °C. It is not individually calibrated, but its variation is process-controlled and stable across temperature and lifetime. Accuracy is sufficient for fail-safe thermal cutoff-not precision measurement-per AEC-Q101 qualification.