Microstrip impedance

Code snippets

curl "https://api.oanor.com/pcb-api/v1/microstrip" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/pcb-api/v1/microstrip", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/pcb-api/v1/microstrip");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/pcb-api/v1/microstrip",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "note": "Hammerstad microstrip model. εr ≈ 4.5 for FR4; the effective εr accounts for fields in both the substrate and air.",
        "inputs": {
            "w_over_h": 1,
            "width_mm": 0.5,
            "height_mm": 0.5,
            "dielectric_constant": 4.5
        },
        "impedance_ohm": 70.119,
        "propagation_velocity_m_s": 166670683.99,
        "propagation_delay_ps_per_mm": 5.999855,
        "effective_dielectric_constant": 3.235363
    },
    "meta": {
        "timestamp": "2026-06-05T03:09:01.301Z",
        "request_id": "75d1e9e9-ba79-4f5c-a4ef-cc4534469aa5"
    },
    "status": "ok",
    "message": "Microstrip impedance",
    "success": true
}