Nec B58944 Datasheet Hot Fix May 2026

NEC B58944 is a specialized integrated circuit (IC) primarily used in automotive engine control units (ECUs) , specifically those manufactured by . It is a variant of the D43256BGU-70Y , which is a 256K-bit (32K x 8) Static RAM (SRAM) chip. Key Technical Specifications

Step 1: Calculate Your Junction Temperature Use the formula: Tj = Ta + (RθJA × P) Or for heatsinked: Tj = Tc + (RθJC × P) nec b58944 datasheet hot

| Parameter | Min | Typ | Max | Unit | | --- | --- | --- | --- | --- | | Operating Voltage | 4.5 | 5.0 | 5.5 | V | | Frequency Range | 50 | - | 1000 | MHz | | Gain | 18 | 20 | 22 | dB | | Noise Figure | - | 2.5 | - | dB | NEC B58944 is a specialized integrated circuit (IC)

While exact specs can vary by manufacturer suffix, the general profile includes: Type: PNP Silicon Transistor. For full timing diagrams and pinouts, you can

For full timing diagrams and pinouts, you can refer to the standard NEC $\mu$PD43256BGU-70L datasheet available on AllDataSheet or Ariat-Tech, as the electrical characteristics are identical.

(indicated by the "-70" in its equivalent part number, $\mu$PD43256BGU-70L). Interface: Key Applications ECU Repair:

The NEC B58944 relay is widely used in various applications, including: