Infineon Technologies BTS247Z

Overview

BTS247Z from Infineon Technologies is a Speed TEMPFET® N-channel logic-level power MOSFET with integrated potential-free temperature sensor and thyristor-based overtemperature protection. It features 55 V V_DS, 18 mΩ R_DS(on) at V_GS = 10 V, 19 A continuous drain current at T_C = 85 °C, and fast switching up to 1 MHz - used in automotive body control modules for intelligent load switching with thermal trip at 150–170 °C.

For engineers reviewing the BTS247Z datasheet, BTS247Z pinout, BTS247Z application, or BTS247Z equivalent, key selection criteria include its dual-function integration (power switch + self-contained thermal sensing), avalanche rating (1.3 J), AEC-Q101 qualification, RoHS-compliant PG-TO220-5-62 package, and gate drive compatibility with 4.5 V logic-level microcontrollers.

Technical Context

The BTS247Z integrates a vertical N-channel MOSFET and an independent silicon temperature sensor with thyristor latching behavior. Its sensor operates without external bias, triggering at 150–170 °C and holding until reset via cathode-anode pulse (t_reset ≥ 100 μs). The MOSFET supports ISO 10483-compliant load switching with 12 A nominal current at 4.5 V gate drive.

Dynamic performance includes 15–25 ns turn-on delay, 30–45 ns rise time, and 60–90 nC total gate charge under 40 V/45 A conditions. Thermal resistance is 1.25 K/W (junction-to-case) and 33–40 K/W (junction-to-ambient with 6 cm² copper), enabling high-power density designs in constrained thermal environments.

Key Specifications

Pinout & Package

Package: PG-TO220-5-62 - thermally enhanced 5-pin through-hole package with isolated tab (drain-connected), optimized for PCB mounting with 6 cm² copper area and vertical orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTS247N and BTS246Z, the BTS247Z uniquely combines 55 V rating, 19 A ISO current, 1.25 K/W thermal resistance, and isolated tab packaging - making it the only variant qualified for high-reliability 12 V automotive power distribution with full thermal autonomy.

Availability

BTS247Z is available at Aetrix Electronics and suitable for automotive body control modules, smart fuse replacements, and engine bay power distribution requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for BTS247Z 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 ISO/TS 16949.

The Speed TEMPFET® product line delivers monolithically integrated power switches with embedded thermal sensing for automotive and industrial applications where autonomous overtemperature protection and compact system design are critical.

FAQ

How does the BTS247Z temperature sensor reset after tripping?

The sensor resets by applying a brief forward current pulse (≥5 mA, ≥100 μs) between pins A (anode) and K (cathode). This forces the thyristor into reverse recovery, restoring the off-state. No external voltage source is needed - the pulse can be generated using a microcontroller GPIO and series resistor. Recovery time to full blocking capability is ≤150 μs.

Can BTS247Z be used in high-side switching configurations?

Yes - BTS247Z is designed for high-side switching with source tied to ground and load connected between battery and drain. Its logic-level gate threshold (1.2–2.0 V) and 20 V V_GS rating allow direct drive from 3.3 V or 5 V controllers. Gate drive must account for bootstrap or isolated supply requirements when used in floating high-side topologies with >12 V rail.

What is the significance of the "Speed TEMPFET" designation?

"Speed TEMPFET" denotes Infineon's proprietary integration of a fast-switching MOSFET with a monolithic silicon temperature sensor exhibiting thyristor latching behavior. Unlike analog sensors, it provides digital-like thermal trip with hysteresis-free, self-holding action - eliminating need for comparator circuits, reference voltages, or software polling in overtemperature protection schemes.

Is the drain tab electrically isolated in the PG-TO220-5-62 package?

Yes - the metal tab in the PG-TO220-5-62 package is internally connected only to the drain terminal and fully electrically isolated from pins 1–5. This allows direct heatsink mounting without insulating hardware, simplifying thermal design while maintaining galvanic separation between power and signal paths.