BTS244Z E3043

Overview

The BTS244Z E3043 is a Speed TEMPFET N-channel enhancement mode MOSFET with logic level input and analog driving capability. It features fast switching up to 1 MHz, potential-free temperature sensor with thyristor characteristics, overtemperature protection, and avalanche rating. Maximum ratings include VDS of 55 V, ID(ISO) of 19 A at VGS=4.5V and 26 A at VGS=10V (TC=85°C), continuous drain current of 35 A (TC=100°C), pulsed drain current of 188 A, single pulse avalanche energy of 1.65 J (ID=19A), power dissipation of 170 W (TC=25°C), operating temperature range of -40 to +175 °C, peak temperature of 200 °C, storage temperature of -55 to +150 °C, and thermal resistance RthJC of 0.88 K/W.

Feature Summary

• Speed TEMPFET technology enabling fast switching up to 1 MHz
• Potential-free temperature sensor with thyristor characteristics for overtemperature protection
• Avalanche rated for robust operation under transient conditions

Applications

• Automotive low-side power switching applications
• Industrial load control requiring high reliability
• Systems needing integrated temperature sensing and protection

Procurement Notes

Verify the specific package variant (PG-TO220-5-3, PG-TO220-5-62, or PG-TO220-5-43) matches your design requirements, as the datasheet lists multiple package options for the BTS244Z family. Confirm RoHS compliance status if required by your manufacturing process, noting that green product derivatives are available. Ensure your application respects the maximum junction temperature limits and thermal derating curves provided in the official documentation.

Selection Notes

Select this component when a low-side switch with integrated temperature sensing and fast switching speed is required. The logic level input allows direct drive from standard microcontrollers. Consider the specific package type based on thermal management needs and PCB layout constraints. Verify that the 55 V drain-source voltage and current ratings suit your load requirements.

Part Context

The BTS244Z belongs to Infineon's Speed TEMPFET family, established for nearly 30 years in automotive and industrial markets. These devices provide basic protection via an integrated temperature sensor available on external pins. While the family is mature, it offers reliable performance for applications where fast switching and temperature monitoring are critical without complex diagnostic interfaces found in newer smart switches.

Replacement Considerations

Infineon recommends considering Classic HITFET™ and HITFET™ + families as alternative products for new designs. These newer series offer enhanced diagnostic features and potentially lower on-resistance. Evaluate compatibility with existing circuitry before substituting, as pinouts and electrical characteristics may differ between generations.

FAQ

What is the function of the potential-free temperature sensor?

The potential-free temperature sensor provides overtemperature protection and can be used for external temperature monitoring. It has thyristor characteristics and requires specific handling as detailed in the application notes.

Can the BTS244Z handle avalanche events?

Yes, the device is avalanche rated. For a single pulse with ID = 19 A and RGS = 25 Ω, it can withstand an avalanche energy (EAS) of 1.65 J.

What packages are available for the BTS244Z?

The BTS244Z is available in three PG-TO220-5 package variants: PG-TO220-5-3, PG-TO220-5-62, and PG-TO220-5-43.