: New replacement chips are typically "empty" and do not contain pre-loaded programs or data; they serve as hardware storage for the ECU's operating firmware. Identification and Equivalents This part is often cross-referenced with: μPD43256BGU-70L / 70Y : The standard NEC catalog equivalent.
| Parameter | Value | Unit | |-----------|-------|------| | Collector-Base Voltage (VCBO) | 80 - 100 V | V | | Collector-Emitter Voltage (VCEO) | 60 - 80 V | V | | Emitter-Base Voltage (VEBO) | 5 V | V | | Collector Current (IC) | 3 A | A | | Base Current (IB) | 0.5 A | A | | Power Dissipation (PC) | 25 W (with heatsink) | W | | Junction Temperature (TJ) | -55 to +150 | °C | | Storage Temperature (TSTG) | -55 to +150 | °C | nec b58944 datasheet 2021
Search for 2SB589 or B589 transistor instead. : New replacement chips are typically "empty" and
: Often cross-referenced with the part number D43256BGU-70Y in some technical documentation, though this sometimes refers to a 256K-bit CMOS Static RAM chip in a similar SOP-28 package . : Often cross-referenced with the part number D43256BGU-70Y