Computer control boards and control modules
A computer board may also be described as a computer control board, control module, circuit control board or electronic control board. It is the core part of a computerized controller and normally combines hardware with software.
Such controllers are used for automation in equipment and systems including air conditioning, elevators and building automation.
Processing inputs and driving actuators
A central part of an automotive computer is its microcontroller, which combines the processor, memory and input/output interfaces. The processor is the core computing element.
Analog input signals are converted into digital values, compared with stored reference data and processed to calculate the required output. Power amplification then allows the output signals to drive actuators.
Design and manufacturing capabilities
| Capability | Service range or option |
|---|---|
| Design layer range | 1–32 layers |
| Minimum conductor width / spacing | 3 mil |
| Minimum laser-drilled hole | 4 mil |
| Minimum mechanically drilled hole | 8 mil |
| Copper foil thickness | 18–175 µm; standard values: 18, 35 and 70 µm |
| Peel strength | 1.25 N/mm |
| Minimum punched hole, single-sided board | 0.9 mm / 35 mil |
| Minimum hole diameter | 0.25 mm / 10 mil |
| Hole-diameter tolerance for holes ≤0.8 mm | ±0.05 mm |
| Hole-diameter tolerance | ±0.05 mm |
| Hole-wall copper, double-sided / multilayer | ≥0.8 mil |
| Via resistance, double-sided / multilayer | ≤300 µΩ |
| Minimum line width | 0.127 mm / 5 mil |
| Minimum line spacing | 0.127 mm / 5 mil |
| Silkscreen colors | Black, white, red, green and other colors |
| Surface finish options | Leaded / lead-free HASL, ENIG, silver and OSP |
| Service | OEM service |
| Standards and compliance references | ISO 9001, RoHS and UL |
