{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9653586","patent":{"patent_number":"US-9653586","title":"Amplifier device comprising enhanced thermal transfer and structural features","assignee":null,"inventors":[],"filing_date":"2015-08-28T00:00:00.000Z","publication_date":"2017-05-16T00:00:00.000Z","cpc_codes":["H01L","H01L","H01L"],"num_claims":20,"abstract":"A heterojunction bipolar transistor (HBT) amplifier device includes transistor fingers arranged in parallel on a substrate. Each transistor finger includes a base/collector mesa stripe shaving a trapezoidal shaped cross-section with sloping sides, and having a base stacked on a collector; a set of emitter mesa stripes arranged on the base/collector mesa stripe; and emitter metallization formed over the set of emitter mesa stripes and the base/collector mesa. The emitter metallization includes a center portion for providing electrical and thermal connectivity to the emitter mesa stripes and extended portions extending beyond the base and overlapping onto the sloping sides of the base/collector mesa stripe for increasing thermal coupling to the collector. A common conductive pillar is formed over the transistor fingers for providing electrical and thermal conductivity. Also, thermal shunts are disposed on the substrate between adjacent transistor fingers, where the thermal shunts are electrically isolated from the transistor fingers."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Amplifier device comprising enhanced thermal transfer and structural features","description":"A heterojunction bipolar transistor (HBT) amplifier device includes transistor fingers arranged in parallel on a substrate. Each transistor finger includes a base/collector mesa stripe shaving a trape","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9653586","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9653586","citation_suggestion":"Patentable. \"Amplifier device comprising enhanced thermal transfer and structural features\" (US-9653586). https://patentable.app/patents/US-9653586","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9653586","json":"https://patentable.app/api/llm-context/US-9653586","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:18:18.022Z"}