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Infineon Technologies BTS40K21EJCXUMA1 — Power Management (PMIC / Gate Driver)

BTS40K21EJCXUMA1 PROFET High-Side Switch, 200 mOhm, AEC-Q100

MPNBTS40K21EJCXUMA1
Obsolete

Infineon PROFET, BTS40K21EJCXUMA1, Automotive AEC-Q100, High-Side Switch, N-Channel, 200 mOhm Rds(on) typ, 1.5A output, 5V-36V load, PG-DSO-8 package, -40°C to 150°C.

$2.1200Ref. price · indicative, final on quote
Infineon Technologies BTS40K21EJCXUMA1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

BTS40K21EJCXUMA1 specifications
ParameterValue
SeriesAutomotive, AEC-Q100, PROFET®
Output typeN-Channel
TypeGeneral Purpose
MountingSurface Mount
Voltage - load5V ~ 36V
Voltage - supply (Vcc (Vdd))Not Required
Output current1.5A
I/O channels1
InterfaceOn/Off
Operating temperature-40°C ~ 150°C (TJ)
PackageTape & Reel (TR)
Rds on200mOhm
Case8-SOIC (0.154\", 3.90mm Width) Exposed Pad
Fault protectionCurrent Limiting, Open Load Detect, Over Temperature, Over Voltage, UVLO
Output configurationHigh Side
Ratio - Input:Output1:1

Product details

High-side switch for automotive loads — what this PROFET delivers

The BTS40K21EJCXUMA1 is a single-channel, N-channel high-side switch from Infineon's PROFET family, AEC-Q100 qualified for automotive applications. It switches a 5V to 36V load with a typical on-resistance of 200 mOhm and delivers up to 1.5A continuous output.

200 mOhm Rds(on) and 150°C junction — thermal budget for underhood duty

The 200 mOhm typical Rds(on) sets the conduction loss floor. A 5V to 36V load supply range covers nominal 12V and 24V automotive electrical systems, including load-dump transients within the absolute maximum ratings. The device integrates fault protection: current limiting, open-load detection, over-temperature shutdown, over-voltage clamp, and under-voltage lockout.

PG-DSO-8 with exposed pad — layout and thermal relief

The package is PG-DSO-8, a surface-mount design with exposed pad.

Frequently asked questions

What is the Rds(on) of BTS40K21EJCXUMA1?

The typical Rds(on) is 200 mOhm. This is specified at 25°C junction temperature; actual on-resistance increases with junction temperature, roughly doubling at 150°C.