Oc71 transistor equivalent

Dec 17, 2008 These are basically AF11x transistors - OC171 is the old designation. Try AF12x transistors as has been suggested. There&39;s not a lot of point in using AF11x types as they&39;re likely to develop internal shorts eventually, just like the OC171. The OC71 will be hopeless and I&39;m surprised it works at all.. 36 Germanium diodes were used for Radar during WW2. Germanium transistors appeared about a decade later. Most early transistors were only specified for audio use, like the OC71. The specified RF types like the OC44 were only good for a few MHz. Why was there such a speed difference vintage Share edited Oct 11, 2019 at 717. Aug 05, 2020 Prop them up with insulation sticks - plastic or wood. If you need to probe, solder, or otherwise touch circuits with power off, discharge (across) large power supply filter capacitors with a 2 W or greater resistor of 100 to 500 ohmsV approximate value (e.g., for a 200 V capacitor, use a 20K to 100K ohm resistor).. Europe. Brand Common type Europe tubesemicond. Tube type Transistor Audio Frequency. Identical to. OC71 2OC71 2N280. Similar Tubes. Other shape (e.g. bulb type). Mar 12, 2009 oc71 glassy on top, nice sparkle. most transparent sounding of the bunch. a bit weak, I think the second one Biffa sent me is a bit hotter 2sb172 nice and full, well defined, but in a different way than the oc types. mids sound a bit scooped. oc44 Philips black glass rather big low end, but can be a bit woofy.. About This Listing. OC71 Germanium PNP Transistor. Model OC71. Equivalent AC107, 2N406. Type PNP - Germanium. hFE 30 minimum. Leakage current 0 to 5 A. All our transistor are fully tested with two calibrated transistor analyzers Metrix 302A & Metrix 675A. Then I replace OC71 transistor (TR7).When the transistor was announced by Bell Labs in 1948, two UK A description of the site's history is available on the Web (14.8 MB pdf file) some people just scraped the paint off an OC71, to create an equivalent to the OCP71. The story .OC71 Transistor Datasheet pdf, OC71 Equivalent. These letters and numbers can be used to determine where the part was made and when. Many CV series devices have an equivalent commercial device for example the CV5712 is equivalent to the more common OC71. It is thought that a high number of CV devices were standard commercial devices but manufactured to tighter parameters and high tolerances. Equivalents NTE109, IN34A, OA79, OA90, DZ280 1 OC45, Germanium PNP 2 OC71, Germanium PNP OC71 Equivalents According to my databook the following groups of transistors were considered equivalents used for the same purpose. Most of these are old, however worth checking out if they are going cheap on eBay. transistor type Original alternative type Modern Substitute Alternative Substitute; tr1 or tr2 OC 202 OC 702 2N 1475 BCY 32; tr3 or tr4 AC 107 NKT 226 AC 107N; tr5 to tr11 OC 71 NKT 224 2N. NPN Germanium Transistor Set . 2 Parts) 14.50. or Best Offer. 14 pcs Germanium NPN transistor MP11 MP38, 2SD195 2SD33 OC75 Tone Bender USSR. 7.95. 10.40 shipping. 10 watching. 20 pcs Germanium Transistors Ge NPN MP37B T322N 2SD37 2SD75 USSR NOS. By 1979 d dime double die;. king crab restaurant near Buenos Aires. diecast police cars for sale bellevue outpatient mental health clinic bellevue outpatient mental health clinic. The City of Denton makes hiring decisions based solely on qualifications, merit, and business needs at the time. For more information, read through our Equal Employment Opportunity Policy (PDF). Applicants with disabilities may contact the City of Denton Human Resources to request and arrange for accommodations.