As of 2021 and moving into 2026, the B58944 remains a "legacy yet essential" part. Because these chips are often custom-made for Tier 1 automotive suppliers like Bosch, they are typically sourced through specialized distributors rather than general consumer electronics retailers.
Double-check the suffix on the part number, as variations may exist for different voltage tolerances or temperature grades. nec b58944 datasheet 2021
SOP-28 (Small Outline Package with 28 pins), a standard surface-mount format for high-density automotive circuits. As of 2021 and moving into 2026, the
The B58944 is a staple in the repair and manufacturing of high-performance ECUs. It is frequently found in systems developed by Bosch for major automotive brands: SOP-28 (Small Outline Package with 28 pins), a
Found in EDC7 and EDC16 diesel control systems.
Given its role in SOP-28 packaging as a driver IC, ensure adequate heat dissipation through PCB copper pours, as ECU environments are subject to high thermal stress.
NEC Corporation (now under the Renesas umbrella) and Bosch.