ITS41K0SMENHUMA1 - 1Ω 60V 200mA Smart High-Side Switch | Infineon
MPN: ITS41K0SMENHUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.3 | $1.30 |
| 10 | $1.16 | $11.60 |
| 100 | $0.905 | $90.50 |
| 500 | $0.747 | $373.50 |
| 1,000 | $0.59 | $590.00 |
ITS41K0SMENHUMA1 Overview
A high-side power switch (also called a load switch or smart switch) is a semiconductor device that controls power delivery to a downstream load by switching the positive supply rail. Compared with a discrete MOSFET plus fuse arrangement, a smart high-side switch integrates the switching transistor, gate driver, current limit, thermal protection, ESD protection, and diagnostic feedback into one IC. This integration reduces PCB area, eliminates external fuses, and provides fault reporting to the host microcontroller. The ITS41K0S family belongs to the broader Infineon PROFET (Protected MOSFET) product hierarchy used in industrial, home appliance, and building automation systems.
Key features include a 60 V maximum load-dump tolerant supply rating, 800 mΩ maximum on-resistance (R_DS(on)), and 200 mA continuous load current capability. Built-in protection includes thermal shutdown with auto-restart, overcurrent protection with current limiting, overvoltage clamp (active clamp against automotive load-dump transients), ESD protection on the IN/DEN pins, and reverse-battery robustness with ground-loss tolerance. The PG-SOT223-4 package provides a thermal pad for PCB heat spreading and supports up to approximately 1 W dissipation with proper layout.
Technically, the ITS41K0SMENHUMA1 uses an N-channel vertical power MOSFET with a charge pump to drive the gate above the supply rail, allowing true low-R_DS(on) high-side switching. A status feedback pin provides diagnostic information to the microcontroller. The device is qualified for industrial environments, supporting -40°C to +125°C junction operation.
Typical applications include industrial PLC digital outputs, relay and solenoid replacement, building automation controls, home appliance driver stages (washing machines, dishwashers, white goods), and small motor or valve drivers. The 60 V rating makes it well suited for 24 V industrial bus systems with significant transient margin.
When designing with this part, ensure the input capacitor (typically 100 nF close to the Vbb pin) and output capacitor are sized according to the application load profile. The exposed pad must be soldered to a copper pour of at least 1 cm² to keep junction temperature within safe limits at sustained loads. The diagnostic output requires proper pull-up configuration per the datasheet.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers select and source the ITS41K0SMENHUMA1 with confidence.
Drop-in alternatives for ITS41K0SMENHUMA1 — 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 ITS41K0SMENHUMA1 (same form factor and footprint) — differing in Package, Topology, Operating Temperature Range, Protection Features, Diagnostic Output.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ITS4142NHUMA1
✅ Drop-In✓ In Stock
$0.88 / Unit
View Datasheet →BTS4130QGAXUMA1
✅ Drop-In✓ In Stock
$1.86 / Unit
View Datasheet →ITS41K0SMENHUMA1 Maximum Ratings & Electrical Characteristics
| Part Number | ITS41K0SMENHUMA1 (ITS41K0S-ME-N) |
| Manufacturer | Infineon Technologies |
| Product Family | PROFET Industrial MINI-PROFET |
| Function | Smart High-Side Power Switch |
| Topology | High-Side Switch, 1:1 N-Channel |
| Supply Voltage Range (Vbb) | 4.9 V to 60 V |
| Maximum Continuous Load Current | 200 mA |
| On-Resistance R_DS(on) (typ) | 1 Ω |
| Number of Channels | 1 |
| Package | PG-SOT223-4 (SOT-223-4) |
| Mounting Type | Surface Mount |
| Operating Temperature (Tj) | -40°C to +125°C |
| Protection Features | Thermal Shutdown, Overcurrent Limit, Overvoltage Clamp, ESD Protection, Reverse Battery |
| Diagnostic Output | Yes (status/feedback pin) |
| RoHS Status | Compliant |
ITS41K0SMENHUMA1 Pin Configuration
| Pin 1 | Vbb (IN) — Supply voltage / battery input, 4.9 V to 60 V |
| Pin 2 | GND — Ground reference, internally connected to thermal pad |
| Pin 3 | OUT — Switched output to load |
| Pin 4 | DEN — Diagnostic / enable input (status feedback + control) |
Typical Applications
ITS41K0SMENHUMA1 is suitable for 6 applications: Industrial PLC Digital Outputs, Relay and Solenoid Replacement, Building Automation Controls, Home Appliance Driver Stages, Small Motor and Valve Drivers, Sensor and Indicator Power Distribution.
Industrial PLC Digital Outputs
The ITS41K0SMENHUMA1 is a strong fit for 24 V industrial PLC digital output modules driving small loads up to 200 mA. Its 4.9 V to 60 V supply range covers 24 V nominal rails plus load-dump transients, while the 1 Ω R_DS(on) keeps dissipation below 40 mW at full load. Integrated thermal shutdown and current limit protect each channel against short-to-ground faults without external fuses. The diagnostic pin reports open-load and overtemperature events to the PLC backplane. Compared with discrete MOSFETs, the ITS41K0S reduces PCB area and eliminates fuse replacement cycles, important for 8-channel and 16-channel output cards where board space is at a premium.
Recommended
Relay and Solenoid Replacement
Solid-state relay substitution is a key use case for the ITS41K0SMENHUMA1 in industrial and appliance controls. It switches DC loads up to 200 mA with no moving parts, eliminating mechanical wear, contact bounce, and audible coil click of electromechanical relays. The 60 V rating supports 24 V and 48 V coil and solenoid circuits with substantial transient margin. The diagnostic feedback enables stuck-shorted-load detection that conventional relays cannot provide. Compared with a discrete N-channel MOSFET plus TVS, the ITS41K0S integrates the flyback clamp for inductive loads and removes the need for external freewheeling diodes on simple solenoid applications below 200 mA.
Recommended
Building Automation Controls
Building automation systems including HVAC actuators, blind motors, and lighting relay drivers benefit from the ITS41K0SMENHUMA1's compact PG-SOT223-4 footprint and 60 V tolerance. In 24 V blind and roller-shutter controllers, the switch handles small DC motor inrush currents up to its current-limit threshold, and the diagnostic pin can signal mechanical jams to the building management controller. The industrial temperature rating of -40°C to +125°C supports unheated equipment rooms and outdoor enclosures. The RoHS-compliant lead-free package meets modern building automation environmental directives, while the integrated thermal protection prevents fire risk in unattended equipment.
Recommended
Home Appliance Driver Stages
White-goods appliance designers choose the ITS41K0SMENHUMA1 for low-power indicator lamps, valve solenoids, and sensor power rails in washing machines, dishwashers, and ovens. The 60 V supply tolerance survives inductive kickback from nearby relay coils and motor windings without external TVS components. Integrated thermal shutdown and overcurrent limit protect against the locked-rotor and overcurrent conditions common in appliance duty cycles. Compared with discrete solutions, the ITS41K0S reduces the BOM by approximately 30% per output channel and improves long-term reliability by eliminating fuse wear-out mechanisms in the field.
Recommended
Small Motor and Valve Drivers
Small DC motor, valve, and damper drivers in process control and HVAC equipment use the ITS41K0SMENHUMA1 to switch the 24 V supply rail to the actuator. The high-side topology eliminates ground-shift issues common with low-side switching, especially in long-cable industrial installations. The 1 Ω R_DS(on) provides low voltage drop at 200 mA, preserving actuator torque margin, and the integrated overvoltage clamp protects against the back-EMF spikes generated when the motor or valve is de-energized. The diagnostic pin allows the host controller to detect open-load conditions (broken wire, disconnected actuator), important for safety-critical valve applications.
Recommended
Sensor and Indicator Power Distribution
The ITS41K0SMENHUMA1 provides individually-protected 24 V power rails to multiple sensors and LED indicators in distributed industrial I/O systems. Each output channel can be independently switched and diagnosed, enabling the controller to detect short-circuit, open-load, and overtemperature events on a per-sensor basis. The 200 mA continuous rating comfortably supports stacks of LED indicators, photoelectric sensors, and proximity switches. The 60 V supply tolerance handles 24 V industrial bus transients without additional protection circuitry, reducing the bill of materials in distributed I/O modules where many channels share a common PCB footprint.
Recommended
Recommended Products Summary
Engineering reference data for ITS41K0SMENHUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ITS4142NHUMA1 | BTS4130QGAXUMA1 |
|---|---|---|---|
| Brand | Infineon | Infineon | Infineon |
| Package | PG-SOT223-4 | PG-SOT223-4 | PG-SOT223-4 |
| Continuous Load Current | 200 mA | ~1.4 A | ~1.4 A |
| Supply Voltage Range | 4.9 V to 60 V | 4.9 V to 60 V | 4.5 V to 42 V |
| Family | PROFET Industrial MINI-PROFET | PROFET Industrial MINI-PROFET | PROFET+ |
| Diagnostic Pin | Yes | Yes | Yes (advanced) |
| Thermal Shutdown | Yes | Yes | Yes |
Key Differentiators
- Compact 60 V high-side switch with full protection in SOT-223-4 (vs Discrete N-channel MOSFET + fuse + TVS)
- Lower-cost MINI-PROFET class optimized for sub-200 mA loads (vs ITS4142NHUMA1)
- Industrial-grade temperature and voltage rating (vs BTS4130QGAXUMA1 (PROFET+ family))
Design Notes
Solder the exposed thermal pad of the PG-SOT223-4 package to a copper pour of at least 1 cm² to keep the junction temperature within safe limits at sustained 200 mA loads. Thermal vias connecting the top copper pour to internal or bottom plane layers further reduce junction-to-ambient thermal resistance. Without adequate copper, thermal shutdown may trigger prematurely at the rated load current.
Place a 100 nF ceramic decoupling capacitor as close as possible to the Vbb pin (Pin 1) to suppress voltage transients and ensure stable gate charge pump operation. An additional bulk capacitor at the module-level supply input absorbs load-dump energy. The diagnostic pin (Pin 4) typically requires a pull-up resistor to the logic supply per the Infineon application schematic.
Do not exceed the 60 V maximum supply rating; the active overvoltage clamp will dissipate substantial energy during repeated transients and may cause thermal failure. When driving inductive loads (solenoids, relays, motors), verify the integrated active clamp is rated for the stored magnetic energy in your load; for very high inductance, an external TVS or freewheeling diode may still be required.
Compliance Information
RoHS compliant per Lisleapex and JLCPCB product listings. Not qualified to AEC-Q100 - this is the industrial-grade MINI-PROFET variant. Per Infineon datasheet note, the ITS41K0S-ME-N is not qualified for automotive applications.
