BTS426L1E3062ABUMA1 - 5.8A 12V Smart High-Side Switch | Infineon
MPN: BTS426L1E3062ABUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.36 | $43.60 |
| 100 | $3.92 | $392.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.18 | $3,180.00 |
| 2,500 | $2.85 | $7,125.00 |
BTS426L1E3062ABUMA1 Overview
What is a high-side power switch? A high-side switch is a semiconductor load driver placed between the supply rail and the load, allowing the load to be turned on/off and protected against fault conditions. The "smart" designation means protection, diagnostic feedback, and control logic are integrated into one package, replacing discrete MOSFETs plus fuse/TVS protection. Smart high-side switches sit within the broader hierarchy: power distribution switch -> load driver -> power management IC -> semiconductor, and are commonly known as PROFET (Protected FET) devices.
Key features include overload protection, current limitation, short-circuit protection, thermal shutdown with auto-restart, overvoltage protection (including load-dump transients per ISO 7637), fast demagnetization of inductive loads, and reverse-battery protection. The integrated charge pump drives the N-channel MOSFET fully on, achieving the low R_DS(on) that minimizes conduction dissipation. A diagnostic feedback pin reports open-load, short-to-ground, overtemperature, and overcurrent conditions back to the microcontroller.
Typical applications include automotive body electronics (lighting, seat heating, mirror adjustment), relay and fuse replacement, power distribution modules, and industrial 24 V/12 V load switching. The wide operating range and ISO 7637 load-dump tolerance make it especially suitable for direct connection to the vehicle 12 V battery bus.
Designers should consider thermal dissipation: at 5.8 A continuous load and 5 mΩ R_DS(on), conduction loss is roughly 0.17 W, but fault currents and ambient temperature in engine-bay environments can push junction temperature toward the 150 °C TJ limit. Per datasheet guidance, use thermal vias under the exposed tab and adequate PCB copper for heat spreading.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for BTS426L1E3062ABUMA1 — 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 BTS426L1E3062ABUMA1 (same form factor and footprint) — differing in Diagnostic Output, Package, Automotive Qualification, Continuous Load Current, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BTS426L1E3062AAUMA1
✅ Drop-In✓ In Stock
$2.35 / Unit
View Datasheet →BTS50055-1TMA
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BTS410E2NKSA1
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
BTS6163DAUMA1
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$3.28 / Unit
View Datasheet →VN5E010MHTR-E
✅ Drop-In📋 Reference alternative (not in catalog)
NCV8401AD10R2G
✅ Drop-In📋 Reference alternative (not in catalog)
BTS426L1E3062ABUMA1 Maximum Ratings & Electrical Characteristics
| Product Type | Smart High-Side Power Switch (PROFET) |
| Manufacturer Series | Classic PROFET 12V |
| Topology | 1:1 N-Channel High-Side |
| Typical R_DS(on) | 5 mΩ |
| Maximum Output Current | 5.8 A |
| Nominal Supply Voltage | 12 V |
| Package | PG-TO263-5-2 (D2PAK, 4 leads + tab) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 °C to +150 °C (TJ) |
| Fault Protection | Current Limiting (Fixed), Open Load Detection, Overtemperature, Short Circuit, Overvoltage (load dump), Reverse Battery |
| Diagnostic Output | Yes (status feedback) |
| Automotive Qualification | AEC-Q100 qualified (PROFET 12V family) |
| Lead-Free / RoHS | Yes (per distributor listings) |
| Demagnetization | Fast (designed for inductive loads) |
BTS426L1E3062ABUMA1 Pin Configuration
| Pin 1 | OUT — Power output to load (high-side switch drain) |
| Pin 2 | GND — Ground / logic reference |
| Pin 3 | IN — Logic input (active-high enable) |
| Pin 4 | ST — Status / diagnostic output |
| Pin 5 | Vbb — Battery supply (also bonded to exposed tab) |
Typical Applications
BTS426L1E3062ABUMA1 is suitable for 6 applications: Automotive Lighting (Headlamp, Tail, Indicator), Relay and Fuse Replacement in Body Electronics, Power Distribution Modules (PDMs), Seat Heating and HVAC Actuators, Industrial 24 V / 12 V Load Switching, Mirror Adjustment and Trunk/Liftgate Actuators.
Automotive Lighting (Headlamp, Tail, Indicator)
The BTS426L1E3062ABUMA1 is used as a 12 V high-side driver for headlamp, tail-lamp, and indicator-LED modules. With 5.8 A continuous current and 5 mΩ typical R_DS(on), it comfortably drives incandescent bulbs up to ~70 W and high-brightness LED strings up to ~5 A per channel. Integrated short-circuit and thermal shutdown protect the wiring harness against chafing shorts, while the load-dump rating absorbs 12 V-bus transients per ISO 7637 — eliminating external TVS in most designs. The status pin reports open-load (failed bulb) back to the BCM for dashboard warning logic.
Recommended
Relay and Fuse Replacement in Body Electronics
Designers replace electromechanical relays and blade fuses with the BTS426L1E3062ABUMA1 to gain software-controllable load switching with diagnostic feedback. The integrated current-limit and thermal-shutdown protections provide the same trip-and-replace behavior of a fuse, but with auto-restart and no serviceable parts — critical for underhood or hard-to-access loads like seat heaters, mirror adjusters, and windshield washer pumps. The 5 mΩ R_DS(on) keeps steady-state conduction losses below 0.2 W at 5 A, allowing the D2PAK to operate without forced air in sealed junction boxes.
Recommended
Power Distribution Modules (PDMs)
In modern automotive power distribution modules, the BTS426L1E3062ABUMA1 functions as a per-channel 12 V high-side switch driven by the central BCM or PDM microcontroller. Its -40 °C to +150 °C TJ operating range suits engine-bay installations, while reverse-battery protection withstands jump-start mis-wiring without destruction. The exposed D2PAK tab is easily heatsinked to the PDM aluminum housing, keeping junction temperature within derating limits at 5 A continuous. Diagnostic feedback allows the PDM to log fault events for service diagnostics.
Recommended
Seat Heating and HVAC Actuators
The BTS426L1E3062ABUMA1 drives seat-heating pads, HVAC damper motors, and blower-resistor bypass loads with its 5.8 A capability. Resistive heating elements (typically 1–4 Ω per seat zone) draw 3–12 A depending on zone size, well within the part's continuous rating. Fast inductive-load demagnetization protects the IC when switching DC-motor windings, and the diagnostic pin reports open-load (broken heating wire) to the HVAC controller for driver warning. The PG-TO263-5-2 footprint is shared across the seat module PCB with other PROFET channels.
Recommended
Industrial 24 V / 12 V Load Switching
Beyond automotive, the BTS426L1E3062ABUMA1 is used in industrial 24 V systems (within its derated voltage envelope) and 12 V battery-backed control cabinets to switch solenoids, indicator lamps, and small motor loads. Built-in reverse-battery and overvoltage protection makes it tolerant of mis-wired field installations, and the diagnostic pin enables remote fault reporting over industrial buses. The AEC-Q100 grade, while automotive-targeted, also provides higher reliability margins than consumer-grade switches for harsh industrial environments.
Recommended
Mirror Adjustment and Trunk/Liftgate Actuators
Mirror-fold and mirror-adjustment DC motors draw 1–3 A peak with inductive kickback on turn-off; the BTS426L1E3062ABUMA1's fast inductive-demagnetization clamp protects the IC from -Vs transients while current limiting catches stalled-motor conditions. Trunk and liftgate actuators with similar inrush profiles benefit from the same protection set. The status pin's open-load detection catches broken motor windings before they create fire hazards, and thermal shutdown protects against the locked-rotor condition typical of frozen or jammed actuators in cold climates.
Recommended
Recommended Products Summary
Engineering reference data for BTS426L1E3062ABUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BTS426L1E3062AAUMA1 | BTS50055-1TMA | BTS410E2NKSA1 | VN5E010MHTR-E | NCV8401AD10R2G |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | STMicroelectronics | onsemi |
| Package | PG-TO263-5-2 (D2PAK) | PG-TO263-5-2 (D2PAK) - same | PG-TO263-5-2 (D2PAK) - same | PG-TO263-5-2 (D2PAK) - same | PG-TO263-5-2 (D2PAK) - same | PG-TO263-5-2 (D2PAK) - same |
| Nominal Supply Voltage | 12 V | 12 V | 12 V | 12 V | 12 V | 12 V |
| Automotive Qualification | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 |
| Diagnostic / Status Pin | Yes | Yes | Yes | Yes | Yes (DIAG) | Yes |
| Load-Dump / Reverse-Battery Protection | Integrated (ISO 7637) | Integrated (ISO 7637) | Integrated | Integrated | Integrated | Integrated |
| Operating Temperature (TJ) | -40 °C to +150 °C | -40 °C to +150 °C | -40 °C to +150 °C | -40 °C to +150 °C | -40 °C to +150 °C | -40 °C to +150 °C |
Key Differentiators
- Lowest R_DS(on) in Classic PROFET 12V PG-TO263-5-2 family (vs VN5E010MHTR-E)
- Integrated reverse-battery and load-dump protection (no external TVS) (vs Discrete MOSFET + fuse + TVS design)
- Diagnostic status pin with auto-restart thermal shutdown (vs NCV8401AD10R2G)
Design Notes
Estimated: at 5.8 A continuous and 5 mΩ R_DS(on), conduction dissipation is I²×R = 5.8²×0.005 ≈ 0.17 W. The PG-TO263-5-2 exposed tab has typical θJA around 40 °C/W on a 1 oz copper 1-square-inch pad, giving a junction rise of ~7 °C at full load — comfortably within 150 °C TJ at 105 °C ambient. However, fault currents of 15–20 A during current-limit activation create transient dissipation of 1–2 W; size the copper pour for at least 1 square inch and use thermal vias under the tab to keep transient Tj below 150 °C.
Per the Infineon PG-TO263-5-2 package outline PDF (x min 7.25 mm, y 6.9 mm metal surface), use a land pattern with thermal via array (≥9 vias, 0.3 mm drill, 1 mm pitch) under the exposed tab to conduct heat into inner copper planes. Place the input capacitor (typically 100 nF ceramic close to Vbb pin) and the gate-drive bypass to suppress inductive transients during PWM operation. Keep the ST trace short and away from switching nodes to avoid coupling diagnostic noise.
Do not load the OUT pin beyond 5.8 A continuous or expect the part to limit indefinitely without thermal cycling — the thermal-shutdown auto-restart is a fault mode, not a normal operating condition. Always verify reverse-battery protection by design review: the BTS426L1E3062ABUMA1 survives reverse battery on Vbb but a mis-wired ground shift can defeat the protection. Add an inline fuse or PTC at the harness entry for ISO 26262 safety analysis. The diagnostic status pin is open-drain on most PROFET variants — always include a pull-up resistor per datasheet.
Compliance Information
AEC-Q100 qualified per Infineon Classic PROFET 12V family documentation. RoHS/REACH compliance per distributor listings; halogen-free status not explicitly stated in the verified web data and is marked unknown.
