# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/heinrich-welker
# Generated: 2026-08-15T08:28:25.757Z

schema: https://schema.org/Person
url: "https://fame.am/person/heinrich-welker"
name: "Heinrich Welker"
slug: "heinrich-welker"
description: "Heinrich Johann Welker was a German theoretical and applied physicist who invented the \"transistron\", a transistor made at Westinghouse independently of the first successful transistor made at Bell Laboratories. He did fundamental work in III-V compound semiconductors, and paved the way for microwave semiconductor elements and laser diodes."
tagline: "German quantum physicist (1912–1981)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Heinrich_Welker.jpg?width=1200"
gender: "male"
country:
  name: "Germany"
  isoCode: "DE"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1912-09-09"
deathDate: "1981-12-25"
livingStatus: "DECEASED"
scores:
  popularity:           41.46
  momentum:             0
  historical:           8.544277333333334
  currentAttention:     0
  sourceConfidence:     54.99999999999999
  profileCompleteness:  70
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://pt.wikipedia.org/wiki/Heinrich_Welker"
    title: "Heinrich Welker"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D9%87%D9%8A%D9%86%D8%B1%D9%8A%D8%AE_%D9%88%D9%8A%D9%84%D9%83%D9%8A%D8%B1"
    title: "هينريخ ويلكير"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Heinrich_Welker"
    title: "Heinrich Welker"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Heinrich_Welker"
    title: "Heinrich Welker"
    type:  "WIKIPEDIA"
  - url: "https://eo.wikipedia.org/wiki/Heinrich_Welker"
    title: "Heinrich Welker"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D9%87%D8%A7%DB%8C%D9%86%D8%B1%DB%8C%D8%B4_%D9%88%D9%84%DA%A9%D8%B1"
    title: "هاینریش ولکر"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Heinrich_Welker"
    title: "Heinrich Welker"
    type:  "WIKIPEDIA"
  - url: "https://ht.wikipedia.org/wiki/Heinrich_Welker"
    title: "Heinrich Welker"
    type:  "WIKIPEDIA"
  - url: "https://ja.wikipedia.org/wiki/%E3%83%8F%E3%82%A4%E3%83%B3%E3%83%AA%E3%83%83%E3%83%92%E3%83%BB%E3%83%B4%E3%82%A7%E3%83%AB%E3%82%AB%E3%83%BC"
    title: "ハインリッヒ・ヴェルカー"
    type:  "WIKIPEDIA"
  - url: "https://mg.wikipedia.org/wiki/Heinrich_Welker"
    title: "Heinrich Welker"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q78097"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump