The is a high-density semiconductor component, frequently identified by its equivalent part number, μPD43256BGU-70L . In technical terms, it is a Static Random Access Memory (SRAM) chip organized with a capacity of 256 Kilobits (32K x 8 bits) .
VGS(th)cap V sub cap G cap S open paren t h close paren end-sub ): 1.0V to 2.5V (Logic level compatible) Optimized for fast switching frequencies Pin Configuration nec b58944 datasheet
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The primary direct equivalent is the , with other -LL (very low power) versions like the UPD43256BGU-70LL also potentially compatible depending on power requirements. Try again later
Since the NEC B58944 is a discontinued part, you will generally not find it from major distributors like Mouser or DigiKey. Instead, your best sources are specialized and online marketplaces . For instance, retailers like CentralitasECU.com list the "B58944 D43256BGU-70Y" as a new component for ECU repair. Important Note : The price for a genuine, new old stock (NOS) or high-quality salvaged B58944 can vary significantly. Some parts listed as "new" might be pulls from recycled ECUs. For example, one Taiwanese electronics supplier lists the price at around 116 TWD (~$3.70 USD) .
Connected to the load; the metal tab is also internally connected to the drain for cooling.
: Standard industrial spacing optimized for automated Pick-and-Place machine handling.
