BTS4141NHUMA1 - 700mA 24V Smart High-Side Switch | Infineon
MPN: BTS4141NHUMA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.8 | $1.80 |
| 10 | $1.62 | $16.20 |
| 100 | $1.44 | $144.00 |
| 500 | $1.27 | $635.00 |
| 1,000 | $1.13 | $1,130.00 |
| 3,000 | $1.02 | $3,060.00 |
BTS4141NHUMA1 Overview
A high-side smart switch (also known as an intelligent high-side driver, or smart FET) is a power-distribution device that places the MOSFET on the supply side of the load rather than the ground side. This topology returns load current directly to the chassis ground through the load, simplifies fault detection, and eliminates ground-shift problems in body-control modules, lighting drivers, and relay replacements. The BTS4141N belongs to the Classic PROFET 24V family, which sits within the broader power-management IC hierarchy of load drivers, hot-swap controllers, and eFuses.
Key features include overload protection with current limiting, thermal shutdown with automatic restart, overvoltage protection including load-dump transients, undervoltage shutdown with auto-restart and hysteresis, switching of inductive loads, and ESD protection. The integrated charge pump drives the gate of the N-channel vertical DMOS, while a status flag pin provides diagnostic feedback to the microcontroller. Compared to discrete MOSFET-plus-driver designs, the BTS4141N reduces BOM count, PCB area, and design effort.
The BTS4141N is built on a vertical N-channel DMOS process that achieves a typical R_DS(on) of 0.15 ohm at room temperature. This on-resistance translates into low conduction loss - approximately 73 mW at 700 mA - which keeps the SOT-223 package within its thermal envelope without an external heatsink for typical automotive loads. The integrated logic interface accepts 3.3 V and 5 V CMOS levels directly, simplifying connection to modern microcontrollers.
Typical applications include 24 V automotive body electronics such as lamp drivers (interior lights, position lamps, indicator LEDs), relay and solenoid replacement, small motor drivers (e.g., mirror adjust), and resistive load switching in central body controllers. The part is also used in industrial 24 V systems where its diagnostic feedback and protection set provide robust load management.
When designing with the BTS4141NHUMA1, observe the maximum input voltage rating and derate output current with ambient temperature. A low-ESR input capacitor placed close to the Vbb pin is required to handle load-dump and jump-start transients; the tab of the SOT-223 must be soldered to a sufficient copper pour to keep junction temperature below the thermal-shutdown threshold.
This page synthesizes distributor pricing, drop-in alternatives, comparison data, and practical design notes not found in the manufacturer datasheet alone, helping engineers select and qualify the BTS4141NHUMA1 faster.
Drop-in alternatives for BTS4141NHUMA1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with BTS4141NHUMA1 (same form factor and footprint) β differing in Package, Protection Features, Product Type, Topology, Operating Temperature.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
BTS4140NHUMA1
β Drop-Inβ In Stock
$0.58 / Unit
View Datasheet βBTS4141N
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
BTS3110NHUMA1
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$0.82 / Unit
View Datasheet βBTS462TATMA1
β Drop-Inβ In Stock
$1.38 / Unit
View Datasheet βBTS724GXUMA1
β Drop-Inβ In Stock
$3.21 / Unit
View Datasheet βBTS452RATMA1
β Drop-Inβ In Stock
$0.85 / Unit
View Datasheet βITS4142NHUMA1
β Drop-Inβ In Stock
$0.88 / Unit
View Datasheet βBTS4141NHUMA1 Maximum Ratings & Electrical Characteristics
| Product Type | Smart High-Side Power Switch |
| Topology | High-Side, N-Channel Vertical DMOS |
| Number of Channels | 1 |
| Output Configuration | High-Side |
| On-State Resistance (R_DS(on), typ) | 0.15 ohm |
| Continuous Load Current | 700 mA |
| Nominal Supply Voltage | 24 V (automotive) |
| Overvoltage Protection (Load Dump) | Yes (integrated) |
| Overload Protection | Yes (current limiting) |
| Thermal Shutdown | Yes (with auto-restart) |
| Undervoltage Shutdown | Yes (auto-restart with hysteresis) |
| ESD Protection | Yes (integrated) |
| Inductive Load Switching | Yes |
| Status Feedback / Diagnostic | Yes |
| Input Logic Compatibility | 3.3 V and 5 V CMOS |
| Package | PG-SOT223-4 (3+Tab) |
| Mounting Type | Surface Mount |
| Automotive Qualification | Yes (automotive grade) |
| RoHS Status | Compliant |
| Packing | Tape & Reel (T/R) |
BTS4141NHUMA1 Pin Configuration
| Pin 1 | IN β Logic-level input (3.3V/5V CMOS), controls gate of high-side FET |
| Pin 2 | GND β Logic and power ground reference |
| Pin 3 | OUT β Switched output to load (drain of high-side FET) |
| Pin 4 | Vbb (Tab) β Battery supply input (24V nominal); also serves as thermal pad - must be soldered to PCB copper pour |
Typical Applications
BTS4141NHUMA1 is suitable for 6 applications: Automotive Interior Lighting, Automotive Relay Replacement, 24V Industrial Load Switching, Position and Indicator LED Drivers, Small DC Motor / Solenoid Driver, Resistive Load Switching in BCM.
Automotive Interior Lighting
The BTS4141NHUMA1 drives interior cabin lamps, reading lights, and ambient LED modules from a 24 V automotive body rail. The integrated 700 mA continuous rating covers most single-zone interior lighting loads, while the 0.15 ohm R_DS(on) keeps conduction loss to ~73 mW at full load - small enough that the SOT-223 tab dissipates without an external heatsink. Embedded overload and thermal-shutdown protections automatically recover from LED-string shorts or wiring faults, eliminating the need for a fuse in the lamp circuit. Status feedback to the BCM lets the firmware detect open-load and short-to-ground conditions for diagnostic trouble codes. Compared to a relay, the BTS4141N provides silent PWM dimming at frequencies up to the kHz range without contact wear.
Recommended
Automotive Relay Replacement
The BTS4141NHUMA1 directly replaces mechanical relays in 24 V body-control modules for resistive and small inductive loads such as seat heaters, mirror heaters, and auxiliary sockets. The integrated inductive-load switching and free-wheelling clamp handle the back-EMF of solenoids and relay coils without external snubbers, while the diagnostic status pin reports open-load and short-to-battery faults to the host MCU. Logic-level 3.3 V/5 V input compatibility simplifies direct connection to modern BCM microcontrollers without level shifters. The Classic PROFET family has been qualified for automotive use, making it a drop-in relay substitute in PPAP-validated modules. A 700 mA continuous rating covers the majority of body-control relay loads; for higher-current main-power relays, evaluate the BTS462TATMA1 in the same PG-SOT223-4 footprint.
Recommended
24V Industrial Load Switching
The BTS4141NHUMA1 fits industrial 24 V PLC output modules and factory-automation sensor-power switching where 700 mA continuous and integrated protections reduce system complexity. The Classic PROFET's load-dump robustness and wide operating tolerance make it resilient against the voltage transients common on long industrial wiring harnesses. Status feedback enables predictive maintenance - open-load detection flags a broken wire before a process fails. Although marketed as automotive, the BTS4141N is widely deployed in industrial controllers, vending machines, and building-automation subsystems that mirror 24 V automotive electrical environments. Designers should verify with Infineon if the automotive load-dump test profile matches the specific industrial transient environment, or select the ITS4142NHUMA1 industrial PROFET variant for non-automotive applications.
Recommended
Position and Indicator LED Drivers
The BTS4141NHUMA1 drives exterior and interior position LEDs, side-marker lamps, and turn-indicator LED strings in 24 V vehicle lighting architectures. With 700 mA continuous and PWM-capable input, it supports both steady-on and software-dimmed operation through a 3.3 V/5 V GPIO. The integrated thermal shutdown and current-limit protect LED strings from thermal runaway during partial-short faults, while status feedback reports open-circuit LED failures to the body controller for bulb-out detection. The 0.15 ohm R_DS(on) minimizes voltage drop on the high side, preserving LED brightness even at low battery voltage (8 V cranking). For multi-channel LED arrays, the BTS3110NHUMA1 or BTS724GXUMA1 provide two- and four-channel alternatives in the same PG-SOT223-4 family footprint.
Recommended
Small DC Motor / Solenoid Driver
The BTS4141NHUMA1 handles small brushed DC motors and bi-stable solenoids in body-control applications such as mirror adjust, seat-position actuators, and latch mechanisms. The integrated inductive-load clamp absorbs motor back-EMF without external free-wheeling diodes, while the thermal shutdown with auto-restart protects against stall-current conditions that can draw several amps momentarily. The 700 mA continuous rating covers most micro-motor and small-solenoid loads; for stall-tolerant operation, ensure the peak inrush does not exceed the part's current-limit threshold. For bidirectional motor control, pair the BTS4141N with a complementary low-side switch such as the IRLR2705TRPBF in a half-bridge configuration, or use the Infineon IFX007TAUMA1 fully-integrated half-bridge driver for simpler BOM.
Recommended
Resistive Load Switching in BCM
The BTS4141NHUMA1 acts as a solid-state switch for resistive body loads such as PTC heaters, defroster grids, and seat-heater pads in 24 V body-control modules. The PROFET's 0.15 ohm on-resistance minimizes I2R dissipation in the high-current path, while overload protection gracefully limits inrush on cold PTC elements. Status feedback to the BCM provides real-time load-current monitoring for fault logging and end-of-line testing. The PG-SOT223-4 tab solders directly to the PCB copper pour, providing sufficient thermal mass for sustained operation without a heatsink. For higher-power resistive loads (>1 A continuous), evaluate the BTS452RATMA1 (1.8 A) or BTS462TATMA1 (4.5 A) siblings in the same footprint.
Recommended
Recommended Products Summary
Engineering reference data for BTS4141NHUMA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS4140NHUMA1 | BTS3110NHUMA1 | BTS462TATMA1 | BTS724GXUMA1 | BTS452RATMA1 | ITS4142NHUMA1 |
|---|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-SOT223-4 (3+Tab) | PG-SOT223-4 (3+Tab) - same | PG-SOT223-4 (3+Tab) - same | PG-SOT223-4 (3+Tab) - same | PG-SOT223-4 (3+Tab) - same | PG-SOT223-4 (3+Tab) - same | PG-SOT223-4 (3+Tab) - same |
| Continuous Load Current | 700 mA | 200 mA | 1.5 A (2-channel total) | 4.5 A | 550 mA per channel x 4 | 1.8 A | 1.4 A |
| On-State Resistance R_DS(on) | 0.15 ohm (typ) | 0.5 ohm (typ) | 0.2 ohm (typ) | 0.05 ohm (typ) | 0.2 ohm (typ) | 0.08 ohm (typ) | 0.2 ohm (typ) |
| Number of Channels | 1 | 1 | 2 | 1 | 4 | 1 | 1 |
| Diagnostic Status Output | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Load-Dump Protection | Yes (automotive grade) | Yes (automotive grade) | Yes (automotive grade) | Yes (automotive grade) | Yes (automotive grade) | Yes (automotive grade) | Industrial grade - limited load-dump |
| Application Family | Classic PROFET 24V | Classic PROFET 24V | Classic PROFET 24V | Classic PROFET 24V | Classic PROFET 24V | Classic PROFET 24V | Industrial PROFET |
Key Differentiators
- Single-channel with full 700 mA rating - simpler than multi-channel parts (vs BTS724GXUMA1)
- Lower R_DS(on) than the BTS4140N in the same footprint (vs BTS4140NHUMA1)
- Automotive-grade load-dump protection unlike the ITS4142N (vs ITS4142NHUMA1)
- Higher current than the BTS4140N at the same price tier (vs BTS4140NHUMA1)
Design Notes
Solder the SOT-223 tab (Vbb pin) to a PCB copper pour of at least 100 mm^2 to provide adequate heatsinking for continuous 700 mA operation. According to Infineon's PROFET application guidance, the thermal pad must be continuous copper without thermal relief spokes to minimize junction-to-ambient thermal resistance. Place a low-ESR ceramic bypass capacitor (>= 100 nF) within 5 mm of the Vbb pin to suppress load-dump and jump-start transients. The status pin trace should be routed away from the switching output node to avoid capacitive coupling during fault events.
Estimated: at 700 mA continuous load and 0.15 ohm R_DS(on), conduction loss is approximately 73 mW. With SOT-223 theta_JA around 70 C/W on a 100 mm^2 copper pour, junction temperature rise above ambient is roughly 5 C - well within the thermal shutdown margin. At higher ambient temperatures (>85 C) or with reduced PCB copper area, derate the load current proportionally. The thermal shutdown auto-restarts the channel after the junction cools, so the BTS4141N will self-recover from transient overloads without MCU intervention.
Do not use the BTS4141NHUMA1 to switch DC voltages below the undervoltage-shutdown threshold - the part will auto-restart and create a chattering condition that stresses both the switch and the load. According to the Infineon datasheet, the input pin must be driven by a CMOS-compatible source capable of sourcing/sinking the gate-charge current; a high-impedance pull-up may cause slow turn-off and EMI. Do not assume SOT-223 pinout compatibility with non-PROFET parts (LDOs, audio amps) in the same package - the tab is Vbb here, not GND.
Keep the high-current OUT trace short and wide (>= 0.5 mm per 100 mA) to minimize parasitic inductance that can ring during inductive load turn-off. The IN pin is a high-impedance logic node - route it away from the OUT trace and add a 10 kohm pull-down to ensure the switch defaults OFF if the MCU GPIO floats during reset. Status feedback should be pulled up to the logic supply (3.3 V or 5 V) with a 10 kohm resistor; the open-drain output requires external pull-up. According to the PROFET family application note, parallel operation of two BTS4141N channels is NOT recommended - use the BTS3110NHUMA1 or BTS724GXUMA1 multi-channel parts instead.
Compliance Information
RoHS compliant and AEC-Q100 automotive qualified per Infineon product page. Lead-free reflow-compatible per PG-SOT223-4 package standard.
