Nec B58944 Datasheet 2021 Verified | 2025 |

Between collector and emitter at 60V DC (using insulation tester or curve tracer): leakage should be < 10µA.

The is an automotive engine drive chip (Integrated Circuit) frequently used in BOSCH engine ECU boards .

Managing the high-side power to injector coils.

From a technical perspective, the datasheet for the B58944 outlines parameters typical of its era—likely detailing switching frequencies, voltage thresholds, and thermal characteristics suited for through-hole or early surface-mount designs. For a design engineer in 2021, these specifications are critical not for new designs, but for "sustaining engineering." The datasheet allows engineers to troubleshoot a failed power supply in a piece of manufacturing equipment from the early 2000s. It informs the engineer whether a modern, drop-in replacement is feasible or if a redesign of the circuit board is necessary. The document transforms from a specification sheet into a bridge between past technology and present necessity. nec b58944 datasheet 2021

According to vehicle cross-reference databases on Inovauto , the B58944 acts as an essential driver component in several widely distributed ECU modules:

Practical design example (concise) Assuming a white B58944 driven at 10 mA per LED with typical Vf = 3.0 V and typical luminous flux per LED from the datasheet:

Parallel all outputs are short-circuit protected. 2.2 Pinout and Functionality Between collector and emitter at 60V DC (using

: 256K bits structured configuration (typically 32K x 8-bit architecture). Electrical & Operational Parameters

In the automotive repair industry, the NEC B58944 is known as a "vulnerable driver IC". It is a common point of failure on . Repair technicians often seek this specific chip to:

The component remains available through specialized automotive component suppliers, such as Centralitas ECU, as well as electronic component distributors like Jotrin Electronics. Summary Table Description Component Name NEC B58944 (Often B58944) Component Type Dual-Channel High-Side Controller Package Type Primary Market Automotive (ECU/ECM Repair) Typical ECU Bosch ME7/EDC16 Key Function Solenoid/Injector Driving From a technical perspective, the datasheet for the

While the "2021" designation in your query may refer to updated inventory records or specific 2021 datasheet revisions from distributors like Jotrin Electronics or Elparts , the core technology remains an established standard in legacy automotive electronics. NEC B58944 ECU DRIVER SOP-28 - Inovauto.com

The high pulsed current capability makes the B58944 exceptionally suitable for inductive load switching and motor drive applications where surge currents are common during start-up or stall conditions.