Network Transformer Sourcing Checklist for Korean Hardware Teams

A cross-reference request should define the technical and quality requirements before comparing prices.

RFQ Template

rfq:
  original_part_number: "required"
  original_datasheet: "attach"
  phy_model: "required"
  ethernet_speed: "10/100 or Gigabit"
  poe: "none / af / at / bt"
  operating_temperature: "required"
  pcb_footprint: "attach drawing"
  sample_quantity: 50
  destination: "Republic of Korea"

Technical Comparison

{
  "channels": "match",
  "turns_ratio": "match",
  "center_taps": "verify",
  "pinout": "verify every pin",
  "ocl": "compare value and conditions",
  "insertion_loss": "compare range",
  "return_loss": "compare range",
  "isolation": "compare test conditions",
  "dcr": "check for PoE",
  "package": "match the PCB"
}

Similar electrical descriptions do not prove drop-in compatibility.

Sample Qualification

1. Compare both datasheets.
2. Record every difference.
3. Inspect dimensions and terminals.
4. Measure approved parameters.
5. Assemble on the target PCB.
6. Run Ethernet and PoE functional tests.
7. Store the approval record and lot information.

Compliance Boundary

Component documents != finished-product certification

The Korean importer or compliance team should determine whether KC, EMC, safety or KS requirements apply to the final equipment.

Shipping Information

shipment = {
    "consignee_legal_name": "required",
    "korean_address": "required",
    "postal_code": "required",
    "telephone": "required",
    "invoice_description": "specific",
    "incoterm": "agreed",
    "importer": "confirmed"
}

Korean import declarations are processed through Korea Customs Service UNI-PASS. The importer or broker should confirm classification for the actual component.

Voohu Technology supplies network transformers, LAN magnetics and RJ45 connectors. Small orders can start from 50 pieces, with BOM support and typical three-to-five-day DHL delivery subject to stock and customs.

More information: Voohu Technology