Community: Open Component Cards

# Real values, taken from the Adom wiki component page https://wiki.adom.inc/adom/0603waf470kt5e
# Every number below is a datasheet limit with its page. The datasheet gives no distribution
# shapes, so each spread is a uniform over the published limit.
card_version: "0.1"
id: occ:resistor/[email protected]
part:
  manufacturer: "Royalohm (UNI-ROYAL)"
  mpn: "0603WAF470KT5E"
  category: resistor
  description: "4.7 Ohm, 1%, 0603, thick film, 1/10 W, TCR +/-200 ppm/K"
  package: "0603"
model_files: []
parameters:
  - name: resistance
    unit: Ohm
    nominal: 4.7
    distribution:
      type: uniform
      applies_to: value
      kind: population
      params: { min: 4.653, max: 4.747 }
      basis: "Datasheet +/-1% tolerance (p.3). Shape not published; uniform over the limit."
      confidence: low
    conditions: { temperature_c: 25 }
    source_refs: [ds1]
  - name: tcr
    unit: ppm/K
    nominal: 0
    distribution:
      type: uniform
      applies_to: value
      kind: epistemic
      params: { min: -200, max: 200 }
      basis: "Datasheet TCR +/-200 ppm/K, the 0603 bracket for 1 to 10 Ohm (p.3). Values above 10 Ohm get +/-100 ppm/K."
      confidence: low
    source_refs: [ds1]
  - name: load_life_drift
    unit: "1"
    nominal: 0
    distribution:
      type: uniform
      applies_to: value
      kind: population
      params: { min: -0.0206, max: 0.0206 }
      basis: "Datasheet load life: Delta R within +/-(1% + 0.05 Ohm) (p.3). At 4.7 Ohm that is +/-0.097 Ohm, or +/-2.06%."
      confidence: low
    source_refs: [ds1]
derivation:
  kind: physics
  method: "R(T) = R25 * (1 + TCR * 1e-6 * (T - 25)), plus load-life drift; every spread is a datasheet limit"
validation:
  maturity: "1.0"
  tested_simulators: []
  comparisons: []
sources:
  - ref: ds1
    kind: datasheet
    uri: "https://wiki.adom.inc/download/aravk/0603waf470kt5e/1.0.0/0603WAF470KT5E-datasheet.pdf"
    sha256: "6344d3f6a60ea3d3a4c4726f3562df5847a0e5910ce0bd4356328c1363a25f0d"
    evidence: "p.1 ratings, p.3 tolerance, TCR and load-life table"
    confidence: high
provenance:
  author: "Adom (wiki.adom.inc), from the adom/0603waf470kt5e component page"
  created: "2026-10-13"
  previous_version: null
  signatures: []
license: CC-BY-4.0
notes: "Generated from an existing Adom wiki component page, which already cites each spec to a datasheet page."