NEC B58944 is a specialized integrated circuit (IC) primarily used as an engine driver chip in Bosch automotive ECUs
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
The query returns noise, not signal. Avoid chasing "hot" results – you’ll only get burned by broken links and fake datasheets.
) and pin 14 (GND). It should be a stable 5.0V (or 3.3V, check your specific ECU variant). nec b58944 datasheet hot
Highly sought after for repairing damaged automotive ECU boards where the engine drive or memory chip has failed. Bosch Systems:
If you suspect the NEC B58944 is causing vehicle issues—such as intermittent no-start conditions, random cylinder misfires, or lost communication faults with the scanner—use this diagnostic process:
If the NEC B58944 dissipates 20W and RθJC is 2°C/W, the case will be 40°C above the junction. You need a heatsink with thermal resistance (RθSA) low enough to keep Tc < max rating. NEC B58944 is a specialized integrated circuit (IC)
An external actuator (like a solenoid or injector) driven by the IC has shorted, pulling too much current through the B58944 driver circuit.
The B58944 is frequently used as a . This type of IC acts as an electronic switch that connects a load (like a fuel injector or a solenoid) to the positive power supply (battery voltage). The "High Side" designation indicates it switches the positive voltage to the load, as opposed to "Low Side" which switches the ground.
: Parts are typically available through specialized electronic component distributors like Jotrin Electronics or automotive repair supply sites like Finding the Datasheet Can’t copy the link right now
Rated for extended automotive environments (-40°C to +125°C junction temperature)
Note: Professional hot-air soldering stations, high-quality flux, and precision tweezers are required to safely desolder the defective SOP-28 chip without lifting the fragile copper traces on multi-layered automotive PCBs. Sourcing the Datasheet and Components