Nec B58944 Datasheet Jun 2026

Have you encountered the NEC B58944 in a device? Contribute your findings to the comments section or contact the author for inclusion in future updates to this datasheet guide.

The is more than just a part number; it is a vital, specialized component in the engine control units of millions of vehicles. While finding a document explicitly titled "nec b58944 datasheet" can be misleading, understanding that it is an NEC µPD43256B series SRAM unlocks a wealth of technical information.

NEC used various alphanumeric codes for different product families. The "B58944" designation does not follow NEC’s typical transistor (e.g., 2SA, 2SC) or logic IC (e.g., µPD) prefixes. Instead, it likely falls into one of three categories: nec b58944 datasheet

Always use a temperature-controlled hot air rework station when soldering the SOP-28 footprint. Excessive heat can easily delaminate the underlying layers of a multi-layer automotive PCB.

: Generally standardized to 7.5 mm (300 mil body thickness). Have you encountered the NEC B58944 in a device

The NEC B58944 is a specific model of a semiconductor device, which falls under the category of power MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors). Power MOSFETs are widely used in electronic circuits for switching and amplification applications. The B58944, in particular, is designed to provide efficient and reliable performance in a range of applications, including power supplies, motor control, and lighting systems.

The exact pulled from your diagnostic scan tool. While finding a document explicitly titled "nec b58944

High-speed Parallel SRAM requiring dedicated address and data buses for instantaneous read/write cycles.

: Built-in ruggedization safeguards the IC from shorted actuator wiring harnesses, a common fault in aging vehicles. Supported ECU Implementations

Fully cross-compatible with NEC Electronics code μPD43256BGU-70L and μPD43256BGU-70Y .