If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.
Special Thanks To:
Aaron Holmes
Aaron Wheeler
Adam Horden
Alan Scrimgeour
Andre
Andrew Haynes
Anonymous000
asabase
Austin Weil
barney
Barry
Bert Hickman
Bill Kukowski
Blitzorn
Brandon Paradelas
Bruce Bowling
BubeeMike
Byong Park
Cesiumsponge
Chris F.
Chris Hooper
Corey Worthington
Derek Woodroffe
Dalus
Dan Strother
Daniel Davis
Daniel Uhrenholt
datasheetarchive
Dave Billington
Dave Marshall
David F.
Dennis Rogers
drelectrix
Dr. John Gudenas
Dr. Spark
E.TexasTesla
eastvoltresearch
Eirik Taylor
Erik Dyakov
Erlend^SE
Finn Hammer
Firebug24k
GalliumMan
Gary Peterson
George Slade
GhostNull
Gordon Mcknight
Graham Armitage
Grant
GreySoul
Henry H
IamSmooth
In memory of Leo Powning
Jacob Cash
James Howells
James Pawson
Jeff Greenfield
Jeff Thomas
Jesse Frost
Jim Mitchell
jlr134
Joe Mastroianni
John Forcina
John Oberg
John Willcutt
Jon Newcomb
klugesmith
Leslie Wright
Lutz Hoffman
Mads Barnkob
Martin King
Mats Karlsson
Matt Gibson
Matthew Guidry
mbd
Michael D'Angelo
Mikkel
mileswaldron
mister_rf
Neil Foster
Nick de Smith
Nick Soroka
nicklenorp
Nik
Norman Stanley
Patrick Coleman
Paul Brodie
Paul Jordan
Paul Montgomery
Ped
Peter Krogen
Peter Terren
PhilGood
Richard Feldman
Robert Bush
Royce Bailey
Scott Fusare
Scott Newman
smiffy
Stella
Steven Busic
Steve Conner
Steve Jones
Steve Ward
Sulaiman
Thomas Coyle
Thomas A. Wallace
Thomas W
Timo
Torch
Ulf Jonsson
vasil
Vaxian
vladi mazzilli
wastehl
Weston
William Kim
William N.
William Stehl
Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
Steve McConner wrote ...
Yay, do you have any in TO-36 packages?
I first saw these in an old marine radio transmitter I was dismantling, there were a pair of them driving the high level modulator.
No TO-36s, Steve, I'm sorry. But some TO-3, and various tubby-looking Russian PNP germanium power types (150W) whose base numbers I couldn't even begin to guess at! You could probably get 100 SMDs into the same volume.
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
Coronafix wrote ...
Makes me wonder how many home hobbyists give up in frustration because they can't get a circuit to work no matter how many times they check their work. And it's probably a mislabelled chip.
Indeed. Or a counterfeit one (see the other thread). Particularly bad if its an expensive chip not easily obtained, the temptation of buying them from less reputable suppliers is very high.
EPE should run another article on identifying these.
Registered Member #1497
Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
This is the second counterfeit/labelling fail thread in a while... its starting to get quite common, and I'm weary of ebaying power semiconductors now too.
And its hard to even give one specific seller a bad rep, cause they will just reopen a new store under some other name. Perhaps we should put together a list of reputable dealers?
Registered Member #1334
Joined: Tue Feb 19 2008, 04:37PM
Location: Nr. London, UK
Posts: 615
aonomus wrote ...
This is the second counterfeit/labelling fail thread in a while... its starting to get quite common, and I'm weary of ebaying power semiconductors now too.
This most definitely NOT a "counterfeit/labelling fail thread" - it's a mispacking error by one of the largest trade electronic suppliers in the world.
I doubt very much that Farnell (or RS/DigiKey/Newark etc.) would ever knowingly sell fakes - it'd completely ruin their businesses.
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
Nicko wrote ...
aonomus wrote ...
This is the second counterfeit/labelling fail thread in a while... its starting to get quite common, and I'm weary of ebaying power semiconductors now too.
This most definitely NOT a "counterfeit/labelling fail thread" - it's a mispacking error by one of the largest trade electronic suppliers in the world.
I doubt very much that Farnell (or RS/DigiKey/Newark etc.) would ever knowingly sell fakes - it'd completely ruin their businesses.
This is a straight QC issue.
I must say, Farnell aren't cheap, but I've always found them completely reliable.
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Yes, let's not accuse Farnell of selling fake components. They might not be big in the USA, but they're huge in Europe, and a preferred supplier for lots of businesses, including the university where I work, and the two places I worked before that.
But they do make mistakes. The best one I ever got was a length of tape cut from a reel that was supposed to contain 0603 ceramic capacitors. I say "supposed" because in fact it was completely empty.
Harry: You should post pix of your Russian germanium transistors trampling some SOT23s to death.
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.
Curses! SMDs...
