http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2175445-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ec85755992a208999ac3ba3945461e8c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R31-2642 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D17-0208 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D17-0214 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D17-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R31-26 |
| filingDate | 1986-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_883b401db1964c123233899a99af45b8 |
| publicationDate | 1986-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-2175445-A |
| titleOfInvention | Apparatus and methods for effecting a burn-in procedure on semiconductor devices |
| abstract | Semiconductor devices (47) are mounted on cards (46) and installed on raised racks (44) extending up from a tank (38) forming a burn-in chamber. The racks are individually lowered to immerse the operating devices in a liquid medium (42) at an elevated temperature. The racks are individually accessible through aligned segments (34A-34E) of a segmented cover to reduce the intrusion of room water vapor. The temperature of the medium is maintained by pumping the medium over cooling coils (112). A lead screw (156) and lever (150) combination provide variable speed pumping, to accommodate changes in medium viscosity, from a fixed speed motor (134). The pumping also produces uniformity in the medium temperature. Vapors in the chamber are blown across acid absorbing material (226) to remove hydrofluoric acid and then across condensor coils (202). Condensed water is separated from the condensed medium in a separator (70) that has deep wells and a circuit (286) to indicate the water level. The liquid medium is returned to the burn-in chamber. A filter (62) cleans the liquid medium. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0295805-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0295805-A3 |
| priorityDate | 1985-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.