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Infineon Technologies BTS426L1 E3043 — Power Management (PMIC / Gate Driver)
Infineon Technologies

BTS426L1 E3043 PROFET high-side switch, 50 mOhm, 5.8 A

MPNBTS426L1 E3043
Obsolete

Infineon PROFET series, BTS426L1 E3043, high-side switch, 1 output, 50 mOhm Rds(on) typ, 5.8 A max, 5V ~ 34V load, TO-220-5 through-hole, -40°C to 150°C junction.

$3.8700Ref. price · indicative, final on quote
BTS426L1 E3043 datasheet
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

BTS426L1 E3043 Technical Specifications
ParameterValue
SeriesPROFET®
Input typeNon-Inverting
Output typeN-Channel
Switch typeGeneral Purpose
Mounting typeThrough Hole
Voltage - load5V ~ 34V
Voltage - supply (Vcc (Vdd))Not Required
Current - output5.8A
Number of outputs1
InterfaceOn/Off
Operating temperature-40°C ~ 150°C (TJ)
PackageTube
FeaturesAuto Restart, Status Flag
Rds on50mOhm
CaseTO-220-5
Fault protectionCurrent Limiting (Fixed), Open Load Detect, Over Temperature, Over Voltage
Output configurationHigh Side
Ratio - Input:Output1:1

Product details

50 mOhm Rds(on) — conduction loss at rated load

The BTS426L1 E3043 is a single-channel PROFET high-side switch from Infineon, designed for general-purpose switched loads in automotive and industrial environments. Its 50 mOhm typical on-resistance at 25°C sets the conduction loss floor — at 5.8 A the I²R dissipation is about 1.7 W, which the TO-220-5 package can sink with a reasonable copper area on the tab.

Rated for a 5V to 34V load supply, the part handles continuous currents up to 5.8 A. The integrated protection suite — current limiting (fixed), open-load detect, over-temperature, and over-voltage — means the switch can survive a shorted load or a stalled motor without external clamp diodes, as long as the thermal shutdown cycle is accounted for in the system duty cycle.

Infineon lists the BTS426L1 as obsolete. The date-code and marking consistency should be checked against Infineon's factory laser-etch standards; a mismatch flags possible re-marked stock.

Frequently asked questions

What is the replacement for BTS426L1 E3043?

No official replacement order code is documented. A buyer should evaluate other PROFET high-side switches in the same TO-220-5 footprint with comparable Rds(on) and current rating, such as the BTS426L1 (without the E3043 suffix) or newer series like the PROFET+2 family, but each requires pin-compatibility and parametric verification against the original BOM.