A supplier should be approved from evidence across technical, quality, production and delivery controls—not from unit price alone.
Weighted Scorecard
weights = {
"technical_capability": 0.25,
"quality_system": 0.20,
"manufacturing_and_test": 0.20,
"sample_results": 0.15,
"delivery_and_capacity": 0.10,
"communication": 0.10,
}
scores = {
"technical_capability": 88,
"quality_system": 82,
"manufacturing_and_test": 80,
"sample_results": 90,
"delivery_and_capacity": 78,
"communication": 85,
}
total = sum(scores[k] * weights[k] for k in weights)
print(round(total, 1))
Example decision bands:
85-100 Approved
70-84 Conditional approval
<70 Additional review or rejection
Critical failures can override the numeric score.
Technical Audit
technical_review:
channels: "verified"
turns_ratio: "verified"
center_taps: "verified"
ocl_conditions: "verified"
insertion_loss: "verified"
return_loss: "verified"
isolation: "verified"
poe_dcr_and_bias: "if applicable"
pinout: "pin-by-pin comparison"
package: "PCB footprint confirmed"
Process Evidence
- Approved material list
- Work instructions
- Calibration records
- In-process inspection
- Final test records
- Lot traceability
- Nonconforming-material segregation
- Corrective-action reports
- Change notifications
Traceability Test
Select one shipped lot and ask the supplier to retrieve:
{
"purchase_order": "",
"part_number": "",
"production_lot": "",
"raw_material_lot": "",
"test_record": "",
"packaging_label": "",
"shipment_record": ""
}
Sample Qualification
- Compare datasheets.
- Inspect dimensions and pins.
- Measure critical parameters.
- Assemble on the target PCB.
- Run Ethernet and PoE tests.
- Save the lot and test record.
Voohu Technology supplies network transformers, LAN magnetics and RJ45 connectors. Sample orders can start from 50 pieces, with BOM sourcing support and typical three-to-five-day DHL delivery subject to stock and destination.
More information: Voohu Technology
