BTS3035TFATMA1 - 5A 12V Low-Side Switch | Infineon HITFET
MPN: BTS3035TFATMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.18 | $11.80 |
| 100 | $0.92 | $92.00 |
| 500 | $0.78 | $390.00 |
| 1,000 | $0.69 | $690.00 |
| 3,000 | $0.61 | $1,830.00 |
Drop-in alternatives for BTS3035TFATMA1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BTS3035TF
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View Datasheet →BTS3035TFATMA1 Maximum Ratings & Electrical Characteristics
| Product Type | Low-Side Power Switch |
| Technology | N-Channel MOSFET |
| Number of Channels | 1 |
| Input Type | CMOS Logic Level |
| Continuous Drain Current | 5 A |
| On-Resistance (RDS(on)) | 30 mOhm (typical) |
| Drain-Source Voltage (VDS) Max | 40 V |
| Operating Voltage Range | 12 V nominal (load-dump tolerant to 40 V) |
| Fault Protection | Over-current, Short-circuit, Over-temperature, ESD |
| Status Feedback | Yes (open-drain diagnostic output) |
| Reverse Battery Protection | Integrated |
| Operating Temperature Range | -40C to +150C (junction) |
| Package | PG-TO252-3-313 (DPAK) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Automotive Grade | AEC-Q100 qualified |
BTS3035TFATMA1 Pin Configuration
| Pin 1 | IN — Logic input (CMOS compatible, 3.3V/5V) |
| Pin 2 | STATUS — Open-drain diagnostic fault output |
| Pin 3 | SOURCE/GND — Source connection (ground reference) |
| Pin TAB | DRAIN — Drain connection (load terminal, also thermal pad) |
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
BTS3035TFATMA1 is suitable for 6 applications: Automotive Interior Lighting, Automotive Solenoid and Valve Control, Industrial PLC Digital Outputs, Relay Replacement in 12V Systems, HVAC Blower Motor Control, Body Control Module Load Drivers.
Automotive Interior Lighting
Drives dome lights, footwell LEDs, and instrument panel illumination with 5A continuous capability and 30 mOhm RDS(on) minimizing heat dissipation. The BTS3035TFATMA1's integrated over-temperature protection prevents thermal runaway during LED short-circuit faults common in automotive wiring. Placed on the low-side return of the LED string with a flyback diode for inductive kickback, it supports PWM dimming up to 1 kHz via the logic input. AEC-Q100 qualification and -40C to +150C operation suit under-cabin thermal environments where conventional relays would fail prematurely.
Recommended
Automotive Solenoid and Valve Control
Switches 12V fuel injectors, transmission shift solenoids, and HVAC blend door actuators with the 5A continuous / pulsed capability needed for high-inrush inductive loads. The BTS3035TFATMA1's 40V drain-source rating absorbs flyback transients up to 4x nominal battery voltage, while integrated short-circuit protection isolates harness faults without external fuses. The open-drain status output feeds the ECU's diagnostic system for open-load detection in OBD-II compliant modules. Suggested copper area is 35 mm^2 minimum on the drain tab for sustained 5A switching.
Recommended
Industrial PLC Digital Outputs
Replaces electromechanical relays in 24V industrial automation modules driving contactors, indicator lamps, and small DC motors below 5A. The BTS3035TFATMA1's CMOS-compatible input interfaces directly with 3.3V or 5V PLC logic without level shifters, while its integrated fault diagnostics enable predictive maintenance via the status pin. Industrial environments demand the -40C to +150C temperature range and ESD protection, both of which the HITFET device provides. The TO252 footprint allows drop-in replacement of legacy relay sockets with PCB-level integration.
Recommended
Relay Replacement in 12V Systems
Directly replaces 12V automotive and industrial relays with solid-state switching for improved reliability and diagnostic capability. The BTS3035TFATMA1 eliminates coil current draw, contact bounce, and mechanical wear while adding fault feedback via the status pin. Compared to a typical automotive relay (30-50 mOhm contact resistance, 10ms response time), the HITFET device offers 30 mOhm RDS(on) and microsecond switching speeds. Application notes recommend a flyback diode across inductive loads to extend device lifetime despite internal avalanche ruggedness.
Recommended
HVAC Blower Motor Control
Provides low-side PWM switching for 12V HVAC blower motors in automotive climate control modules, supporting variable speed control via duty-cycle modulation on the logic input. The BTS3035TFATMA1's 5A continuous rating handles typical blower motor inrush (3-5A) with the 30 mOhm RDS(on) keeping conduction losses below 750 mW at full load. Integrated thermal shutdown protects against stalled-rotor conditions where motor current can spike to 8-10A, latching off the output until the fault clears.
Recommended
Body Control Module Load Drivers
Switches door lock actuators, mirror adjusters, and seat motors in distributed body electronics architectures. The BTS3035TFATMA1's small TO252 footprint and integrated protections enable dense multi-load PCB layouts while reducing external component count. The status pin supports end-of-line testing for harness continuity during vehicle assembly. AEC-Q100 qualification and reverse battery protection are critical for body modules exposed to jump-start and load-dump events up to 40V transient.
Recommended
Recommended Products Summary
Engineering reference data for BTS3035TFATMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS3035TF | BTS428L2ATMA1 | ITS4090QEPDXUMA1 | BSP762TXUMA1 |
|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-TO252-3-313 (DPAK) | PG-TO252-3-313 - same | PG-TO252-3-313 - same | PG-TO252-3-313 - same | PG-TO252-3-313 - same |
| Topology | Low-side N-channel | Low-side N-channel - same | High-side N-channel | High-side P-channel | High-side N-channel |
| Continuous Current | 5 A | 5 A | 8 A | 1.4 A | 1.4 A |
| RDS(on) Typical | 30 mOhm | 30 mOhm | 12 mOhm | 90 mOhm | 200 mOhm |
| Drain-Source Voltage Max | 40 V | 40 V | 60 V | 60 V | 40 V |
| Integrated Protection | OC, SC, OT, ESD, Reverse Battery | OC, SC, OT, ESD, Reverse Battery - same | OC, SC, OT, ESD | OC, SC, OT, ESD | OC, SC, OT, ESD |
| Status Output | Yes (open-drain) | Yes | Yes | Yes | Yes |
| Automotive Grade | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 |
| Unit Price (qty 100) | $0.92 | $0.88 | $1.25 | $0.95 | $1.05 |
Key Differentiators
- Lowest RDS(on) in HITFET +12V family for 5A continuous (vs ITS4090QEPDXUMA1)
- True low-side topology with integrated reverse battery protection (vs BSP762TXUMA1)
- 5A continuous in PG-TO252-3-313 with full diagnostic suite (vs BTS134DATMA1)
Design Notes
Estimated: at ID = 5 A continuous and RDS(on) = 30 mOhm, conduction loss is approximately 0.75 W. With the PG-TO252-3-313 package thermal resistance of approximately 50 C/W (junction-to-ambient on 35 mm^2 copper), junction temperature rise above ambient is approximately 37.5C. For sustained 5A operation above 85C ambient, increase drain-tab copper area to at least 100 mm^2 or use thermal vias to inner copper planes. Thermal shutdown engages at approximately 150C junction.
Route the logic input trace away from the drain (high-current switching node) to minimize capacitive coupling that could falsely trigger the gate. Place a 100 nF decoupling capacitor on the VCC rail adjacent to the MCU side of any shared supply. The drain tab requires at least 35 mm^2 of top-side copper with thermal vias to a bottom-side ground plane for heat spreading. Maintain at least 2 mm clearance between the drain tab and any low-voltage signal traces to meet IEC 60664 creepage requirements.
The open-drain STATUS pin requires an external pull-up resistor (typically 10 kOhm to MCU VCC) - leaving it floating produces undefined diagnostic readings. During MCU reset, hold the IN pin at logic low to prevent floating-gate activation that could briefly energize the load. Inductive loads (solenoids, motors) require an external flyback diode; the BTS3035TF has internal avalanche ruggedness but sustained flyback energy will degrade the device. Verify reverse battery protection limits - the integrated protection handles brief reverse polarity but prolonged reverse voltage may exceed ratings.
The CMOS-compatible input has typical thresholds of 0.8V (low) and 2.0V (high), supporting direct 3.3V and 5V MCU GPIO drive. Add a 10 kOhm pull-down on the IN pin to define the off-state during MCU brownout. The status output rise time is dominated by the external pull-up resistor and load capacitance - keep the STATUS trace under 50 mm to limit capacitive loading for clean logic-level transitions at the MCU input.
Compliance Information
AEC-Q100 qualified for automotive applications. RoHS and REACH compliant per Infineon product declaration. Lead-free and halogen-free per JEDEC J-STD-609 marking on package.
