Nec B58944 Datasheet __top__ Direct
For repair shops, having a reliable source for these ICs—such as Jotrin Electronics or specialized automotive suppliers like Inovauto —is essential for reviving damaged engine computers. Datasheet Insights for Engineers
The NEC is a high-voltage, high-speed NPN power transistor designed for use in high-definition television (HDTV) horizontal deflection circuits and other high-voltage switching applications. It utilizes a diffusion prescaler structure to achieve high breakdown voltage and fast switching speeds. This component is characterized by its high collector current capability and robust power dissipation rating, making it suitable for driving inductive loads such as deflection yokes and flyback transformers.
Total loss of communication with the fuel injection or ignition system.
The B58944 is a frequent "point of failure" in aging automotive hardware. Because it handles critical data streams within the ECU, a malfunction can lead to severe engine performance issues, "no-start" conditions, or communication errors with diagnostic tools. nec b58944 datasheet
The following is a summary of known applications, combining all information currently available.
(Engine Control Unit) boards, this specialized integrated circuit (IC) is a critical component for engine management systems.
The primary direct equivalent is the , with other -LL (very low power) versions like the UPD43256BGU-70LL also potentially compatible depending on power requirements. For repair shops, having a reliable source for
OBD-II scan tools display "ECU Internal Memory Error" or loss of communication codes (U-codes).
: Standard TTL and CMOS input/output thresholds. Power Dissipation : Ultra-low low-power standby mode (
Used in line cards and signal processing units. This component is characterized by its high collector
Once soldered onto the circuit board using appropriate hot-air rework profiles, the system microprocessor writes the initialization parameters automatically upon the next power cycle. This eliminates the need to pre-program the IC using external EEPROM burning hardware. If you are working on a module repair, let me know: What are you working with? What symptoms or error codes is the module throwing?
Search for service manuals of devices known to contain B58944. For example, if B58944 appears on a “NEC PC-9801” power supply or “NEC Multisync 5FG” monitor, the schematic will list its function. Use sites like ManualsLib, Elektrotanya, or Archive.org.