Nec B58944 Datasheet [ No Sign-up ]

: Specializes in automotive ECU drivers and replacement components.

The chip is fabricated using NEC's advanced silicon-gate CMOS technology, contributing to its high speed and low power draw.

Including ME7.4.4, ME7.5, ME7.9.6, and ME7.9.20.

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The is a specialized, proprietary automotive integrated circuit (IC) predominantly packaged in a SOP-28 (Small Outline Package with 28 pins) and heavily utilized as an electronic control unit (ECU) driver or subsystem interface component. Often cross-referenced alongside custom masked components or static RAM variants like the NEC D43256BGU series, this component is highly sought after by automotive engineers and bench technicians executing component-level diagnostics and repairs on hardware modules.

Includes the ME7.4.4, ME7.5, ME7.5.10, ME7.9.6, and ME7.9.20 controllers used extensively by Honda, Volkswagen, and Audi.

The NEC B58944 is engineered primarily as an . Within an automotive ECU, the chip bridges the gap between the vehicle’s low-power microcontroller logic and high-power physical actuators, such as fuel injectors, solenoids, relays, and ignition modules. : Specializes in automotive ECU drivers and replacement

The 28-pin Small Outline Package (SOP-28) optimizes board space while handling localized thermal dissipation. In a standard diagnostic setup for the B58944 layout, the pin distribution is categorized into three functional groups:

Isopropyl alcohol (99% concentration) and an ESD-safe brush. Step-by-Step Rework Procedure

The you are working on.

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. This means it may not contain the specific program or data required for your vehicle's specific engine mapping. Depending on the exact sub-function of the chip in your ECU (such as if it acts as a memory or programmable driver), you may need to program it or "clone" the data from the original chip if it is still readable. Where to Find the Datasheet

Understanding the NEC B58944: A Vital Component for Automotive ECU Repair This public link is valid for 7 days

Technical Specifications and Application Overview for the B58944 Transistor Component Type: High-Voltage, High-Speed Switching Power Transistor Manufacturer: NEC (now Renesas Electronics)