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Infineon Technologies BTS4142NNT — Power Management (PMIC / Gate Driver)
Infineon Technologies

BTS4142NNT High-Side Power Switch, 150mOhm, 1.4A

MPNBTS4142NNT
Obsolete

Infineon BTS4142NNT high-side power switch, 1 output, N-channel, 150mOhm typical on-resistance, 1.4A max output, 12V to 45V load voltage, PG-SOT223-4 package, -40°C to 125°C operating temperature.

$2.1400Ref. price · indicative, final on quote
BTS4142NNT 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.
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Specifications

BTS4142NNT Technical Specifications
ParameterValue
Input typeNon-Inverting
Output typeN-Channel
Switch typeGeneral Purpose
Mounting typeSurface Mount
Voltage - load12V ~ 45V
Voltage - supply (Vcc (Vdd))Not Required
Current - output1.4A
Number of outputs1
InterfaceOn/Off
Operating temperature-40°C ~ 125°C (TJ)
PackageTape & Reel (TR)
FeaturesAuto Restart
Rds on150mOhm
CaseTO-261-4, TO-261AA
Fault protectionCurrent Limiting (Fixed), Over Temperature, Over Voltage
Output configurationHigh Side
Ratio - Input:Output1:1

Product details

150 mOhm high-side switch with Auto Restart

The Infineon BTS4142NNT is a single-channel high-side power switch in a PG-SOT223-4 surface-mount package. It switches a 12 V to 45 V load rail through an N-channel MOSFET with a typical on-resistance of 150 mOhm, delivering up to 1.4 A continuous output current. This is a protected switch, not a bare transistor — it integrates current limiting, over-temperature shutdown, and over-voltage clamping. The Auto Restart feature means the switch cycles back on after a fault clears, so it recovers without a system reset in transient overload conditions.

The BTS4142NNT is listed as Obsolete by Infineon.

Fault protection and temperature grade

The fixed current-limiting threshold protects the load wiring and the switch itself during a hard short. The input is a simple On/Off logic signal (non-inverting), and no external Vcc supply is needed — the switch is self-powered from the load rail.

Frequently asked questions

Does BTS4142NNT have overcurrent protection?

Yes, it includes fixed current limiting as part of its fault protection set, along with over-temperature and over-voltage clamping.