cl2n+@andrew.cmu.edu (Christopher Fleming Lane) (10/16/90)
Help! We need to find equivalents for these european transistors for a project. Any help is appreciated. ECG289A ECG290A ECG129 <--(ESPECIALLY) ECG128 ECG373 <--(ESPECIALLY) ECG374 <--(ESPECIALLY) ECG123AP We need these for an amplifier. If you have any idea as to where to find the european models, or helus track the American (2N..) equivalents, we would appreciate it. Thanks, Chris Lane
Jeff.Miller@samba.acs.unc.edu (Jeff Miller) (10/16/90)
When I see those ECG numbers, they just scream at me. I have an ECG(c) Master Replacement Guide. ECG, as far as I can tell, is a supplier of a wide range of replacement components geared toward the service industry. That you found a piece of equipment chock full of them comes as something of a suprise. Maybe someone replaced all of the transistors in your equip with ECG part (I did that once, was caught away from home with a piece of equipment I had to fix) but more likely the ECG numbering system is some sort of standard or ECG is more of a supplier than I thought. A company called NTE also makes or remarkets xistors using the same numbering system. Sylvania, Philips, ECG, NTE, RCA. There has recently been some sort of corporate implosion I forget the details of. You want crosses for them? Could probably give you hundreds. My guide is set up "the other way 'round", you look up a 2N part number and you get back an ECG number. The cross may be a bit fishy. The guide also gives pretty complete specs for each part. At least some of the parts you mention are familiar right off. You ought to be able to get this same guide or the similar NTE version at one or another parts stores near you. Thje places that supply TV repair parts. And of course you should be able to buy the parts there, by name. E-mail me if you still want specifics. -cornhead --
roy@phri.nyu.edu (Roy Smith) (10/16/90)
cl2n+@andrew.cmu.edu (Christopher Fleming Lane) writes: > We need to find equivalents for these european transistors for a project. > ECG289A, ECG290A, [etc] If you have any idea as to where to find the > American (2N..) equivalents, we would appreciate it. I think you're doing it backwards. ECG is a company that produces replacement transistors. They have a big catalog listing 2N to ECG number mappings, not the other way around. Typically an ECG part will be a direct replacement for a whole slew of 2N parts, having the same pinouts, equal or greater beta and Ft, and max voltage and power ratings which exceed those of all the 2N parts covered. NTE electronics seems to also make a whole line of drop-in replacements, with the same numbers as the ECGs. For example, the 289A and 290A are complementary (ie NPN and PNP) general purpose audio frequency amplifiers. Any serious electronics supplier (look for places that cater to the TV repair trade) should have a good chunk of the ECG and/or NTE line in stock. You want to get the ECG Master Replacement Guide; it's a phone-book size catalog showing everything. Probably costs $5 by now, but worth it. If you can't find a dealer, try calling one of: Philips ECG, Inc Distributor and Special Markets Divisions 1025 Westminster Drive PO Box 3277 Williamsport, PA 17701 717-323-4691 (?) NTE Electronics, Inc Bloomfield, NJ 07003 -- Roy Smith, Public Health Research Institute 455 First Avenue, New York, NY 10016 roy@alanine.phri.nyu.edu -OR- {att,cmcl2,rutgers,hombre}!phri!roy "Arcane? Did you say arcane? It wouldn't be Unix if it wasn't arcane!"
fng@questor.wimsey.bc.ca (Felix Ng) (10/17/90)
cl2n+@andrew.cmu.edu (Christopher Fleming Lane) writes: > Help! > We need to find equivalents for these european transistors for > a project. Any help is appreciated. > ECG289A > ECG290A > ECG129 <--(ESPECIALLY) > ECG128 > ECG373 <--(ESPECIALLY) > ECG374 <--(ESPECIALLY) > ECG123AP > > We need these for an amplifier. If you have any idea as to > where to find the european models, or helus track the American > (2N..) equivalents, we would appreciate it. > Here are the equivalents that I found in my Radio Shack Reference Guide: ECG289A = MPSA06 ECG290A = MPS2907 ECG128 = 2N3053 ECG123AP = MPS2222A Hope this helps Felix Ng <fng@questor.wimsey.bc.ca>
smlg1015@uxa.cso.uiuc.edu (10/17/90)
Could someone explain what devices are included under the 2N. . . numbers? Are they all BJT's or FET's, as well ? Do all American/ Japanese transistor manufacturers label using the 2N. . . numbers? Can you get any information off the 2N. . . number without a spec sheet? Stuart Lichtenthal
whit@milton.u.washington.edu (John Whitmore) (10/18/90)
In article <44900014@uxa.cso.uiuc.edu> smlg1015@uxa.cso.uiuc.edu writes: > >Could someone explain what devices are included under the 2N. . . numbers? All '2Nxxxx' numbers are issued by JEDEC (Joint Electronic Devices Engineering Council, I think), and relate to any three-terminal electronic widgets. Transistors, FETs, SCRs, unijunction transistors, etc. >Are they all BJT's or FET's, as well ? Obviously, no. > Do all American/ Japanese transistor >manufacturers label using the 2N. . . numbers? Most Japanese manufacturers don't, and many US manufacturers have large numbers of unregistered devices. Registration makes it possible for your competitors to sell the same devices (i.e. it makes the device number generic). For some reason, most plastic power transistors and lots of consumer-equipment transistors are of unregistered types. Japan has its own registered-part system, with 2SAxxx, 2SBxxx, ... type numbers; this system DOES have a separate set of numbers for FETs and bipolar transistors. >Can you get any information off the 2N. . . number without a spec sheet? Not much; if the number is low (2N500 or below) it's almost certainly Ge; if it's high (2N2000 or above) it's probably Si; and if it has a 2Nxxxx part number, it can't be a dual-gate MOSFET; that's because dual-gate MOSFETs have four terminals, not three; they get 3Nxxx part numbers, instead. Some optoisoolators have a three-terminal transistor and two-terminal LED, so have 4Nxx numbers. John Whitmore