The NEC B58944 is a type of N-channel MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) designed for high-speed switching applications. Manufactured by NEC Corporation, a renowned Japanese electronics company, this component is widely used in various electronic devices, including power supplies, motor control systems, and audio equipment.
It plays an essential role in several generations of and control modules, including:
When replacing the B58944, ensure the suffix (e.g., D43256BGU-70Y ) matches exactly, as different versions may have varied timing or voltage tolerances required for specific ECU firmware.
Avoid sketchy "free datasheet" sites that ask for a credit card or require you to download a .exe file. These are malware. Stick to the sites above.
: It is typically an "empty" chip; when used for repairs, it does not contain software itself but provides the physical space for the ECU's processor to work. Where to Find Resources nec b58944 datasheet Free
: 70 nanoseconds (ns) (indicated by the -70 suffix) Package Profile : SOP-28 plastic encapsulation Target Application : Bosch Automotive Engine Control Modules Absolute Maximum Operating Ratings
The NEC B58944 driver is an indispensable hub in early-to-mid 2000s electronic fuel injection layouts. Because automotive manufacturers frequently share sub-assembly designs from major OEMs, you will encounter this chip across diverse platforms:
The NEC B58944 is typically found surface-mounted inside automotive engine computers. It frequently shares its identification markings or pairs alongside the RAM configuration layout inside various vehicle platforms.
Use either a drag-soldering method with a mini-hoof iron tip or a reflow profile with high-quality leaded or lead-free solder paste. Check thoroughly under magnification for any hairline solder bridges between adjacent pins. The NEC B58944 is a type of N-channel
: The fuel pump or injectors fail to prime due to dead output driver circuits. Where to Find the NEC B58944 Datasheet for Free
Because this chip is an older, specialized automotive component, finding a "free" standalone PDF titled exactly "B58944" can be difficult. You are most likely to find the relevant technical data by searching for the datasheet on electronics resource sites:
: Bi-directional lines for writing data or reading data packets. CE¯modified cap C cap E with bar above CEcap C cap E Control Input
: Multiple pins are assigned to common ground structures to dissipate thermal buildup across the PCB footprint. Avoid sketchy "free datasheet" sites that ask for
Extensively integrated into ME7.4.4 , ME7.5 , ME7.5.10 , ME7.9.6 , and ME7.9.20 engine computer platforms.
The NEC B58944 is a highly versatile component that finds applications in various fields. Obtaining a free datasheet for this component is relatively easy, thanks to the numerous online resources available. By following the steps outlined in this article, you can easily access a free NEC B58944 datasheet and take advantage of its features and specifications.
A: Replacing a SOP-28 surface-mount IC requires:
Engine Control Units for Bosch, Honda, Iveco, and other automotive systems. Datasheet and Availability
Finding dedicated factory datasheets for proprietary automotive ICs can be difficult because manufacturers like Bosch and NEC often restricted direct documentation to licensed tier-1 assembly partners. However, engineers can access pinout details, cross-references, and functional block diagrams for free through independent repository databases: