BTS621L1E3128ABUMA1 - 24V Dual Hi-Side Switch, 8mΩ PROFET | Infineon
MPN: BTS621L1E3128ABUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.47 | $34.70 |
| 100 | $3.05 | $305.00 |
| 500 | $2.74 | $1,370.00 |
| 1,000 | $2.45 | $2,450.00 |
Drop-in alternatives for BTS621L1E3128ABUMA1 — 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:
BTS621L1E3128ABUMA2
✅ Drop-In📋 Reference alternative (not in catalog)
BTS621L1E3144ABUMA1
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
BTS723GWXUMA1
✅ Drop-In✓ In Stock
$1.24 / Unit
View Datasheet →ITS716GFUMA1
✅ Drop-In✓ In Stock
$3.22 / Unit
View Datasheet →BTS5215LAUMA1
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →BTS621L1E3128ABUMA1 Maximum Ratings & Electrical Characteristics
| Product Type | Dual-channel smart high-side power switch (PROFET) |
| Number of Channels | 2 (dual high-side, 1:1) |
| FET Topology | N-Channel vertical power MOSFET with charge pump |
| On-State Resistance Rds(on) | 8 mΩ typical per channel |
| Nominal Operating Voltage | 12 V (automotive bus) |
| Maximum Supply Voltage | 24 V (load-dump survivable) |
| Continuous Load Current | 4.4 A per channel |
| Operating Temperature Range | -40 °C to +150 °C junction |
| Package | PG-TO263-7-2 (D2PAK-7, exposed tab) |
| Mounting Type | Surface Mount |
| Input Logic Compatibility | CMOS-compatible, ground-referenced |
| Diagnostic Feedback | Yes - open-load and overtemperature reporting |
| Embedded Protection | Overload, current limit, short-circuit, thermal shutdown, overvoltage (load dump), fast demagnetization, reverse battery |
| Technology | Smart SIPMOS (monolithic) |
| RoHS / Lead-Free | Compliant (Pb-free) |
BTS621L1E3128ABUMA1 Pin Configuration
| Pin 1 | OUT1 — Channel 1 power output to load |
| Pin 2 | IN1 — Channel 1 CMOS input (active high) |
| Pin 3 | IN2 — Channel 2 CMOS input (active high) |
| Pin 4 | GND — Ground reference for inputs and logic |
| Pin 5 | ST/DIAG — Diagnostic feedback / status flag |
| Pin 6 | Vbb — Battery supply (12 V or 24 V nominal) |
| Pin 7 | OUT2 — Channel 2 power output to load |
Safe Operating Area (per channel)
Typical Applications
BTS621L1E3128ABUMA1 is suitable for 6 applications: Automotive Dual-Filament Headlamp Control, 24 V Truck and Tractor Solenoid Drivers, Automotive Seat Heater and Seat Ventilation, DC Motor Bridge Halves for Window Lifters, Industrial 24 V PLC Discrete Outputs, Body Control Module Relay Replacement.
Automotive Dual-Filament Headlamp Control
The BTS621L1E3128ABUMA1 drives both low-beam and high-beam filaments of a single headlamp from one chip, with each 4.4 A channel independently controlled by the body-control MCU. Its 8 mΩ typical Rds(on) per channel keeps filament cold-start inrush dissipation under 1 W at 12 V / 5 A, while embedded short-circuit and thermal shutdown protect against wiring harness faults. The CMOS-compatible ground-referenced inputs interface directly to 3.3 V or 5 V MCUs without level shifters. The 24 V load-dump rating ensures survival of jump-start transients common in service environments. Diagnostic feedback reports open-filament to the BCM, enabling bulb-failure detection required by ECE R48.
Recommended
24 V Truck and Tractor Solenoid Drivers
The BTS621L1E3128ABUMA1 is explicitly optimized for trucks and tractors per Infineon's product page, handling 24 V nominal commercial-vehicle bus systems. Each 4.4 A channel drives pneumatic solenoid loads such as trailer brake valves, PTO clutches and hydraulic spool valves. Embedded fast demagnetization protects the switch from inductive kickback when solenoids de-energize, eliminating external freewheeling diodes. Reverse battery protection allows the device to survive mis-wired jump-start scenarios without replacement. The exposed D2PAK-7 tab spreads continuous dissipation across the PCB copper, supporting the high duty cycles seen in commercial-vehicle solenoid control.
Recommended
Automotive Seat Heater and Seat Ventilation
The BTS621L1E3128ABUMA1 independently drives two seat heating pads or two ventilation blowers, replacing two discrete MOSFET solutions. Its 8 mΩ Rds(on) minimizes cable harness losses - critical because seat wiring runs long distances from the BCM, where any voltage drop translates directly into wasted heat. PWM switching up to 1 kHz for variable-temperature control is supported through the CMOS inputs. The -40 °C to +150 °C junction range handles the extreme under-seat thermal environment where summer cabin temperatures can exceed 80 °C. Embedded thermal shutdown with auto-restart protects against blocked-ventilation motor stalls.
Recommended
DC Motor Bridge Halves for Window Lifters
In a H-bridge configuration, two BTS621L1E3128ABUMA1 devices form the high-side halves while companion low-side N-channel MOSFETs form the ground returns, driving 12 V automotive window-lifter motors up to 4 A continuous. The 24 V load-dump capability protects against the high-voltage transients that occur when the alternator load suddenly drops. Fast demagnetization of inductive loads prevents cross-conduction during PWM switching transitions. The exposed tab keeps junction temperature within limits during motor stall events, where current can momentarily exceed the 4.4 A nominal rating before the current limiter engages.
Recommended
Industrial 24 V PLC Discrete Outputs
Outside automotive, the BTS621L1E3128ABUMA1 functions as a 24 V industrial PLC output module driving solenoids, indicator lamps and small relay coils. Each channel's 4.4 A rating covers most industrial loads up to 100 W at 24 V. Embedded protection eliminates external fusing in many applications. CMOS-compatible inputs allow direct drive from 24 V PLC logic with a simple resistor divider, removing the need for opto-isolated input stages in cost-sensitive applications. Reverse battery protection guards against miswired field installations, a common failure mode in industrial cabinets.
Recommended
Body Control Module Relay Replacement
The BTS621L1E3128ABUMA1 replaces electromechanical relays in body control modules for functions such as horn, fog lamp, and accessory power. Solid-state switching eliminates the audible click and contact bounce of mechanical relays, while built-in diagnostics allow the BCM to detect open-circuit and short-circuit faults without external sense resistors. The 8 mΩ Rds(on) keeps continuous on-state dissipation low enough to avoid external heatsinking in most BCM configurations. Lifetime is essentially unlimited compared to mechanical relay contact wear - a key advantage for always-on body functions.
Recommended
Recommended Products Summary
Engineering reference data for BTS621L1E3128ABUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS621L1E3128ABUMA2 | BTS621L1E3144ABUMA1 | BTS723GWXUMA1 | ITS716GFUMA1 | BTS5215LAUMA1 |
|---|---|---|---|---|---|---|
| Package | PG-TO263-7-2 (D2PAK-7) | PG-TO263-7-2 - same | PG-TO263-7-2 - same | PG-TO263-7-2 - same | PG-TO263-7-2 - same | PG-TO263-7-2 - same |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Number of Channels | 2 (dual high-side) | 2 (dual high-side) | 2 (dual high-side) | 2 (dual high-side) | 2 (dual high-side) | 2 (dual high-side) |
| Rds(on) per Channel | 8 mΩ typical | 8 mΩ | 8 mΩ | ~50 mΩ | ~70 mΩ | ~50 mΩ |
| Continuous Load Current per Channel | 4.4 A | 4.4 A | 4.4 A | [DATA_NEEDED] | [DATA_NEEDED] | 1.5 A |
| Maximum Supply Voltage | 24 V (load-dump) | 24 V | 24 V | 24 V | 24 V | 24 V |
| Diagnostic Feedback | Yes (open-load, overtemperature) | Yes | Yes | Yes | Yes | Yes |
| Reverse Battery Protection | Yes (self-resetting) | Yes | Yes | Yes | Yes | Yes |
| Technology / Family | Classic PROFET 12V | Classic PROFET 12V | Classic PROFET 12V | Classic PROFET 12V | Classic PROFET | Classic PROFET 12V |
Key Differentiators
- Lowest Rds(on) per channel among Infineon dual-channel PROFET devices in D2PAK-7 (vs BTS5215LAUMA1)
- Highest continuous current per channel in PG-TO263-7-2 PROFET family (vs ITS716GFUMA1)
- Identical footprint and pinout across the BTS621L1 family for design reuse (vs BTS723GWXUMA1)
Design Notes
The PG-TO263-7-2 package relies heavily on the exposed tab and PCB copper for heat spreading. Estimated: at 4.4 A continuous per channel and 12 V supply, on-state dissipation is P = I² × R = 4.4² × 0.008 ≈ 0.155 W per channel. With a 2 oz copper pour of at least 25 × 25 mm on both top and bottom layers tied with thermal vias, θJA reaches roughly 31 °C/W, keeping the junction rise at 4.8 °C above ambient per channel. For dual-channel full-load operation, design for 6 W dissipation budget and verify junction temperature stays below 150 °C under worst-case ambient (typically 85 °C in engine-bay applications).
Place the device with its exposed tab facing the largest unbroken copper area, ideally the chassis ground plane or a dedicated thermal island. Use an array of thermal vias (0.3 mm drill, 1 mm pitch) directly under the tab to pull heat into the bottom-layer copper. Keep the OUT1/OUT2 traces short and wide (≥ 2 mm) to minimize parasitic inductance, which becomes critical during the fast demagnetization of inductive loads where voltage spikes can exceed 30 V. Place the input pull-down or pull-up resistors within 5 mm of the IN1/IN2 pins to prevent false triggering from noise coupling.
Do not connect the diagnostic pin directly to a high-impedance MCU input without a defined pull-up or pull-down resistor - the diagnostic output is an open-drain structure. Do not exceed 24 V continuous on Vbb even though the device survives load-dump; sustained overvoltage will engage thermal protection unnecessarily. Do not use the BTS621L1E3128ABUMA1 below 6 V supply without verifying gate-drive margins, since the internal charge pump requires a minimum Vbb to achieve full enhancement of the N-channel output FETs. Always include a reverse-battery protection check in your design review: while the BTS621L1E3128ABUMA1 is reverse-polarity tolerant, downstream loads on the same harness may not be.
Compliance Information
AEC-Q100 qualified for automotive applications per Infineon product page. RoHS and REACH compliant; lead-free (Pb-free) D2PAK-7 package.
