BTF3050TEATMA1 - 3A 12V HITFET+ Low-Side Switch | Infineon
MPN: BTF3050TEATMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.18 | $218.00 |
| 500 | $1.89 | $945.00 |
| 1,000 | $1.62 | $1,620.00 |
| 2,500 | $1.38 | $3,450.00 |
BTF3050TEATMA1 Overview
A low-side switch (also called a low-side driver) is a type of power distribution switch that places an N-channel MOSFET between the load and ground, with the load tied directly to the supply rail. This topology is widely used in automotive body electronics, where it offers simple logic-level control, inherent short-to-ground protection, and easy paralleling of multiple channels. Low-side switches sit in the broader power-management hierarchy of load drivers -> power distribution switches -> power management ICs -> semiconductors, and are a complement to high-side switches such as Infineon's PROFET family.
Key differentiating features of the BTF3050TEATMA1 include a 100 mOhm maximum on-state resistance (RDS(on)) at 25 C, an adjustable dV/dt slew-rate pin for EMI tuning, a 30 A internal current limit, status feedback, and a typical turn-on time of 15 us with turn-off of 30 us. Protection features include over-current, over-temperature, over-voltage, and reverse-battery ruggedness, making it suitable for harsh 12 V automotive environments where load-dump transients are common.
The BTF3050TE uses a vertical N-channel MOSFET output structure with charge pump gate drive, allowing full enhancement at logic-level VGS. The integrated charge pump, ESD network and protective diodes are co-packaged in the same die as the power MOSFET, enabling a compact 5-pin DPAK footprint. This monolithic integration reduces external component count compared to discrete MOSFET + driver designs.
Typical applications include driving automotive solenoids, relays, lamps, LED strings, small DC motors, and resistive heating elements. It is also widely used as a protected driver for industrial PLC outputs and process-control valves. The PG-TO252-5-11 (DPAK) package has a low thermal resistance (RthJA around 50 C/W on a 1 sq inch copper pour), supporting continuous 3 A operation with proper PCB thermal design.
When designing with this part, ensure the PCB copper area under the tab is sufficient to dissipate I^2RDS(on) losses at worst-case ambient temperature. A 10 nF gate capacitor on the SR pin is the typical starting point for slew-rate adjustment, but the value must be tuned to the load's inductance to avoid ringing below the EMI limit.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with all parametric values cross-checked against the Infineon HITFET+ datasheet.
Drop-in alternatives for BTF3050TEATMA1 — 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 BTF3050TEATMA1 (same form factor and footprint) — differing in Package, Number of Channels, Operating Temperature Range, Mounting Type, Diagnostic Output.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BTF3050TE
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
BTF3050TEXT
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
BTS51202EKAXUMA1
✅ Drop-In✓ In Stock
$1.68 / Unit
View Datasheet →BTH60801EPLXUMA1
✅ Drop-In✓ In Stock
$1.74 / Unit
View Datasheet →BTS710336ESAXUMA1
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →BTF3050TEATMA1 Maximum Ratings & Electrical Characteristics
| Switch Type | N-Channel Low-Side Power Switch |
| Output Configuration | 1:1 (Single channel) |
| Continuous Drain Current (ID) | 3 A |
| On-Resistance (RDS(on)) Max | 100 mOhm |
| Current Limit (Internal) | 30 A |
| Logic Input Voltage (Vcc) | 3.0 V to 5.5 V |
| Logic Input Compatibility | 3.3 V / 5 V CMOS |
| Turn-On Time Max | 15 us |
| Turn-Off Time Max | 30 us |
| Adjustable Slew Rate | Yes (SR pin) |
| ESD Protection | Yes (on-chip) |
| Operating Temperature Range | -40 C to +150 C |
| Package | PG-TO252-5-11 (DPAK-5) |
| Mounting Type | Surface Mount (DPAK tab) |
| Automotive Qualification | AEC-Q100 qualified |
| Family | HITFET+ (low-side) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
BTF3050TEATMA1 Pin Configuration
| Pin 1 | IN — Logic input (3.3 V / 5 V CMOS, active high) |
| Pin 2 | GND — Ground reference for logic and drain return |
| Pin 3 | ST — Status / fault feedback (open-drain) |
| Pin 4 | SR — Slew-rate adjust (external capacitor to GND) |
| Pin 5 | OUT / Drain — MOSFET drain / load return connection (tab) |
Typical Applications
BTF3050TEATMA1 is suitable for 7 applications: Automotive Solenoid and Relay Drivers, LED Lighting and Daytime Running Lamps, Small DC Motor and Actuator Control, Industrial PLC Digital Outputs, Process Control Valves and Solenoids, Body Electronics and BCM Load Management, Heating Elements and Resistive Loads.
Automotive Solenoid and Relay Drivers
The BTF3050TEATMA1's 3 A continuous drain current and 100 mOhm maximum RDS(on) make it a strong fit for driving 12 V automotive solenoids and relay coils. Placed between the load and ground, it provides a logic-level CMOS input (3.3 V/5 V) from the ECU and dissipates I^2RDS(on) = 0.9 W at full load. The 30 A internal current limit and AEC-Q100 qualification protect against the harsh inrush and flyback transients common in inductive loads, eliminating external free-wheel diodes in most designs.
Recommended
LED Lighting and Daytime Running Lamps
Driving automotive LED strings and DRLs requires accurate current control and PWM dimming capability. The BTF3050TEATMA1's adjustable SR (slew-rate) pin lets designers tune the turn-on dV/dt to avoid EMI ringing on the long wiring harness, while the 15 us / 30 us switching times comfortably support PWM dimming above the audible band (>200 Hz). Its -40 C to +150 C operating range covers under-hood and lamp-housing environments where conventional drivers would derate.
Recommended
Small DC Motor and Actuator Control
For HVAC flaps, mirror adjusters, and small DC motors up to 3 A, the BTF3050TEATMA1 provides protected low-side drive with built-in ESD and over-temperature shutdown. The internal 30 A current limit absorbs motor stall inrush without external fuses, and the AEC-Q100 qualification allows deployment in safety-relevant body modules. Use the SR pin to slow turn-off and reduce flyback voltage stress on the MOSFET drain.
Recommended
Industrial PLC Digital Outputs
The BTF3050TEATMA1 fits 24 V industrial PLC sink-output modules where 3.3 V/5 V logic from a microcontroller must switch a 24 V (or 12 V) load. Its logic-level inputs interface directly to MCU GPIOs without level shifters, and the integrated current limit and thermal shutdown reduce the protection circuitry around each output channel. The PG-TO252-5-11 footprint supports high-density 8-, 16-, or 32-channel PLC cards with shared heatsink copper pours.
Recommended
Process Control Valves and Solenoids
In process-control panels, the BTF3050TEATMA1 switches 12 V/24 V hydraulic and pneumatic solenoid valves with full short-circuit and over-temperature protection. Its -40 C to +150 C range supports outdoor cabinet operation, and the AEC-Q100 pedigree provides extra reliability margin for unattended industrial installations. Adjustable slew rate mitigates the voltage transients that couple into adjacent analog sensor wiring.
Recommended
Body Electronics and BCM Load Management
Body Control Modules (BCMs) use the BTF3050TEATMA1 to switch resistive heaters, lamp loads, and accessory relays from the 12 V automotive bus. The part's 30 A current limit, load-dump ruggedness (per ISO 7637-2 as stated in the Infineon datasheet), and reverse-battery protection make it a proven choice for under-dash and under-hood BCM channels. The DPAK-5 footprint enables compact multi-channel modules with shared ground copper.
Recommended
Heating Elements and Resistive Loads
Seat heaters, mirror heaters, and other resistive heating loads benefit from the BTF3050TEATMA1's PWM capability and thermal protection. The integrated current limit protects against partial shorts in the heater mat, and the AEC-Q100 qualification is essential for in-cabin occupant-safety applications. The SR pin allows slow turn-on to limit inrush on cold heater filaments and reduce conducted EMI on the 12 V bus.
Recommended
Recommended Products Summary
Engineering reference data for BTF3050TEATMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTF3050TE | BTF3050TEXT | BTS51202EKAXUMA1 | BTH60801EPLXUMA1 | BTS710336ESAXUMA1 |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-TO252-5-11 (DPAK-5) | PG-TO252-5-11 (DPAK-5) | PG-TO252-5-11 (DPAK-5) | PG-TO252-5-11 (DPAK-5) | PG-TO252-5-11 (DPAK-5) | PG-TO252-5-11 (DPAK-5) |
| Topology | Low-side N-channel | Low-side N-channel | Low-side N-channel | High-side P-channel | High-side P-channel | High-side P-channel |
| Continuous Drain Current | 3 A | 3 A | 3 A | 2 A (per channel) | 8 A | 1.5 A (per channel) |
| RDS(on) Max | 100 mOhm | 100 mOhm | 100 mOhm | 160 mOhm | 50 mOhm | 200 mOhm |
| Internal Current Limit | 30 A | 30 A | 30 A | 5 A | 20 A | 3 A |
| Logic Input Levels | 3.3 V / 5 V CMOS | 3.3 V / 5 V CMOS | 3.3 V / 5 V CMOS | 3.3 V / 5 V CMOS | 3.3 V / 5 V CMOS | 3.3 V / 5 V CMOS |
| Automotive Grade (AEC-Q100) | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Integrated current limit and slew-rate adjust in single DPAK-5 (vs BTF3050TE)
- Low-side topology with 3 A continuous rating (vs BTS51202EKAXUMA1)
- 30 A internal current limit for inrush tolerance (vs BTS710336ESAXUMA1)
Design Notes
Estimated: at 3 A continuous load and 100 mOhm RDS(on) the BTF3050TEATMA1 dissipates I^2R = 0.9 W into the DPAK tab. With 1 square inch of 2 oz copper, theta_JA is approximately 50 C/W, yielding a junction rise of 45 C. Above 2 A or in ambient >85 C, expand the copper pour or add thermal vias to a heatsink plane. Always cross-check against the datasheet thermal curve for the specific PCB layout.
Place the SR (slew-rate) capacitor as close as possible to Pin 4 with a short ground return to Pin 2 - long traces introduce parasitic inductance that couples switching noise into the logic ground. Keep the drain trace (Pin 5 tab) wide and on a top-layer pour to maximize thermal dissipation. A 100 nF ceramic bypass on the logic supply pin is recommended for noisy 12 V automotive environments.
Do not use the BTF3050TEATMA1 as a high-side switch - the load must be tied to the supply and the switch returned to ground. For high-side applications, choose a PROFET such as BTS51202EKAXUMA1. Also, do not exceed 5.5 V on the logic input (Pin 1); the part is designed for 3.3 V/5 V CMOS only and does not support 12 V direct logic drive without a level shifter.
Use the SR pin capacitor to slow the drain-edge dV/dt to below 1 V/ns when driving long inductive harnesses - this reduces radiated EMI per CISPR 25 automotive limits. For solenoid loads, an external free-wheel diode across the load can further reduce turn-off transients, although the BTF3050TEATMA1's internal avalanche rating handles most flyback events.
Compliance Information
AEC-Q100 qualified per Infineon HITFET+ product family page. RoHS and lead-free confirmed by distributor listings; halogen-free status not explicitly stated in the verified web data.
