BTS3104SDRATMA1 - 2A 60V Low-Side HITFET Switch | Infineon
MPN: BTS3104SDRATMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.96 | $1.96 |
| 10 | $1.76 | $17.60 |
| 100 | $1.43 | $143.00 |
| 500 | $1.15 | $575.00 |
| 1,000 | $0.98 | $980.00 |
| 2,500 | $0.84 | $2,100.00 |
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View Datasheet →BTS3104SDRATMA1 Maximum Ratings & Electrical Characteristics
| Product Type | Low-side power switch (HITFET family) |
| Number of Channels | 1 |
| Output Configuration | Low-side, N-channel |
| Drain-to-Source Voltage (V_DS) Max | 60 V |
| Continuous Drain Current (I_D) | 2 A |
| Input Logic Level | CMOS-compatible (active-high) |
| Operating Temperature Range | -40 C to +150 C |
| Package | PG-TO252-3-11 (DPAK) |
| Mounting Type | Surface Mount |
| Protection Features | Overtemperature, overcurrent, short-circuit, overvoltage, ESD |
| Automotive Qualification | AEC-Q100 qualified |
| RoHS Status | Compliant |
| Halogen-Free | Yes |
| MSL Level | 1 |
BTS3104SDRATMA1 Pin Configuration
| Pin 1 | IN — Logic input (CMOS-compatible, active-high); drives the gate of the internal N-FET |
| Pin 2 | GND / Source / Tab — Source of the internal N-channel FET; tied to system ground. The metal tab is internally connected to this pin and provides the main thermal path |
| Pin 3 | OUT / Drain — Drain of the internal N-channel FET; connects to the low side of the load |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
BTS3104SDRATMA1 is suitable for 7 applications: Automotive Body Electronics - Lamp Drivers, Industrial 24V PLC Digital Outputs, Relay and Solenoid Replacement, LED Module Drivers, Small DC Motor and Fan Control, Automotive Load-Dump Protected Switch, Heater and Resistive Load Switching.
Automotive Body Electronics - Lamp Drivers
The BTS3104SDRATMA1 is a strong fit for automotive lamp-driver modules (turn signals, tail lamps, interior lighting) because of its 2A continuous current, 60V V_DS rating that handles 12V load-dump, and integrated short-circuit and overtemperature protection. In a typical turn-signal path the load is an incandescent or LED bulb fed from the battery, and the BTS3104SDR sits on the low side to switch the bulb's ground return. Compared to a discrete MOSFET plus fuse, the integrated HITFET provides latched fault feedback to the BCM and eliminates the maintenance fuse. Designers should size the PCB copper area under the DPAK tab so that 2A continuous dissipation (P = I^2 x R_DS(on)) keeps the junction below 150 C in an 85 C cabin.
Recommended
Industrial 24V PLC Digital Outputs
In 24V industrial PLC and DCS digital-output modules, the BTS3104SDRATMA1 can switch solenoids, small valves, and indicator loads on the low side. The 60V V_DS headroom comfortably covers the 24V nominal rail plus inductive transients from relay coils. The CMOS-compatible input drives directly from a 3.3V or 5V MCU GPIO, eliminating the need for an opto-isolated gate driver. Integrated short-circuit protection means a wiring fault on the field side latches the output off and signals the MCU rather than destroying the FET. Engineers designing 8- or 16-channel PLC outputs can pair the BTS3104SDRATMA1 with a digital isolator and a low-power MCU for a fully protected, diagnostic-rich output stage.
Recommended
Relay and Solenoid Replacement
The BTS3104SDRATMA1 is well suited to replacing mechanical relays in PCB designs where space, weight, and reliability matter. A solid-state low-side switch using the BTS3104SDR produces no audible click, has no moving parts to wear out, and provides diagnostic feedback through the same fault pin. For a 12V/24V relay coil drawing roughly 100-300 mA, the 2A rating gives 7-20x headroom and the device dissipates well under 0.5W. Designers should add a flyback diode across any inductive load (relay coil, solenoid, valve) because the HITFET, while avalanche-rated, performs better with an external freewheeling path for repetitive switching.
Recommended
LED Module Drivers
Driving LED strings for interior ambient lighting, signage, or indicator panels is a clean application for the BTS3104SDRATMA1. With a constant-current resistor or simple linear regulator in series with the LED string, the BTS3104SDR provides the on/off control and protects against wiring shorts. The 60V V_DS supports long LED strings (up to ~20 white LEDs in series) and the 2A current covers most single-channel lighting loads. AEC-Q100 qualification allows the same part to be used across automotive and industrial product lines, simplifying BOM. Designers should use PWM at low duty cycles (<1kHz) for dimming; the HITFET family is optimized for on/off switching rather than high-frequency PWM.
Recommended
Small DC Motor and Fan Control
The BTS3104SDRATMA1 can drive small brush-type DC motors and fans up to roughly 2A, such as cooling fans, small pumps, and actuator motors in body-electronics modules. When used as a low-side switch, direction reversal is achieved with an H-bridge topology using two BTS3104SDR plus two high-side switches, or with a dedicated half-bridge driver like the IFX9201SGAUMA1. The integrated current limit and overtemperature shutdown protect the FET during motor stall conditions, which otherwise cause rapid thermal runaway in a discrete N-MOSFET design. For PWM speed control below 1kHz the BTS3104SDR responds well; above that, switching losses dominate and a dedicated gate-driver + MOSFET stage is preferable.
Recommended
Automotive Load-Dump Protected Switch
In 12V automotive electrical systems the load-dump transient can briefly push the rail above 35V when the alternator loses its battery load. The BTS3104SDRATMA1's 60V V_DS rating gives a comfortable margin against this transient and its integrated overvoltage protection shuts the switch off safely if the rail goes too high. This makes the part a strong choice for underhood body modules that must survive load-dump without external TVS clamps (or with a smaller, cheaper TVS). Designers should still place a bulk capacitor on V_IN to absorb the bulk of the load-dump energy; the BTS3104SDR handles the residual transient and protects downstream wiring.
Recommended
Heater and Resistive Load Switching
Resistive loads such as PTC heaters, mirror heaters, and seat-heater pads draw several amps and benefit from the BTS3104SDRATMA1's integrated protection. With a 2A continuous rating and low R_DS(on), the device dissipates minimal power and stays cool even at sustained loads. Short-circuit and overtemperature protection guard against the failure modes most common in heater wiring (chafing, water ingress). When designing with a low-side topology, the load return is switched, so the chassis or frame becomes part of the circuit - confirm this is acceptable for the application before selecting the topology.
Recommended
Recommended Products Summary
Engineering reference data for BTS3104SDRATMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS3104SDLATMA1 | BTS3046SDRATMA1 | BTS3110NHUMA1 |
|---|---|---|---|---|
| Package | PG-TO252-3-11 (DPAK) | PG-TO252-3-11 (DPAK) - same | PG-TO252-3-11 (DPAK) - same | PG-TO252-3-11 (DPAK) - same |
| Brand | Infineon | Infineon | Infineon | Infineon |
| Topology | Low-side, N-channel | Low-side, N-channel | Low-side, N-channel | Low-side, N-channel |
| V_DS Max | 60 V | 60 V | 60 V | 60 V |
| Continuous I_D | 2 A | ~2 A (similar) | ~0.6 A | ~3 A |
| AEC-Q100 | Yes | Yes | Yes | Yes |
| Integrated Protection | OT, OC, SC, OV, ESD | OT, OC, SC, OV, ESD (same family) | OT, OC, SC, OV, ESD (same family) | OT, OC, SC, OV, ESD (same family) |
| Approx. Unit Price (qty 100) | $1.43 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Higher continuous current than lower-rated HITFET siblings (vs BTS3046SDRATMA1)
- Integrated full protection suite in a single DPAK (vs Discrete N-MOSFET + fuse + sense resistor)
- AEC-Q100 automotive qualification on a standard power-switch footprint (vs Industrial-grade DPAK MOSFETs)
Design Notes
Estimated: At 2A continuous load and a typical R_DS(on) of roughly 200 mOhm at 25 C, the BTS3104SDRATMA1 dissipates about 0.8W. On a 1oz copper DPAK footprint with 1 sq-inch of copper pour, theta_JA is approximately 50 C/W, so junction rises about 40 C above ambient. To stay below 150 C junction in an 85 C cabin, derate to about 1.3A continuous or add a small heatsink or 2oz copper. Use Infineon's DPAK thermal model in the application note for tighter estimates at your specific board layout.
Place a 100nF ceramic bypass capacitor as close as possible to the V_IN pin (pin 1) and a 10uF bulk capacitor on the supply rail within 1cm of the part. Use a wide copper pour on the GND/tab (pin 2) to maximize heat spreading - the tab is the primary thermal path. Avoid running sensitive analog signals under the DPAK tab because the switching node can couple noise into adjacent traces. Follow the land pattern from Infinean's TO252-3-11 land-pattern recommendation to match the JEDEC footprint exactly.
Do not forget a flyback diode across inductive loads (relay coils, solenoids, motors) even though the HITFET is avalanche-rated. Repetitive avalanche stress degrades the part over time and an external freewheeling diode (e.g. 1A Schottky) extends life. Also confirm that the logic input is truly CMOS-compatible at 3.3V - some HITFET variants need 5V. Finally, do not exceed the 60V V_DS during load-dump; add an upstream TVS if the rail can spike higher in your system.
Compliance Information
RoHS and halogen-free confirmed by Infineon product page. AEC-Q100 qualification applies to the -Q/-A1 family members. Reach compliance is per EU REACH declaration on Infineon's product page.
