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Mailed from China, made in Mexico, go figure
- Thread starter AK 47
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AK 47
Well-Known Member
I'm suspicious enough that I'm not going to use them........$12.76 down the tubes.
One MJ21194 weighed in at 14.1 gm the other at 15.8 (the light one was noticeably lighter and the case base was much thinner. Also the undersides molding was different.
The epoxy type insulation area where the leads protrude is only a bit over 3mm dia on all four.
The thin baseplate on the light is only 2mm......the other 3 are 3mm.
That's what I get for donating my $ to the enemy!:nono:m :tears:,
One MJ21194 weighed in at 14.1 gm the other at 15.8 (the light one was noticeably lighter and the case base was much thinner. Also the undersides molding was different.
The epoxy type insulation area where the leads protrude is only a bit over 3mm dia on all four.
The thin baseplate on the light is only 2mm......the other 3 are 3mm.
That's what I get for donating my $ to the enemy!:nono:m :tears:,
wickedweed
Active Member
just ordered these from farnell...it costs about US$6 per piece...
AK 47
Well-Known Member
yeah, got'em from a Canada ebay store. At least they are nice about my claim:
thanks for contacting us.
since you are unsatisfied with these Item , we offer no-question-refund policy ,
you can return these Item to this address by ecomomy shipping ,
LI WEN
THE AIRPORT POST OFFICE, SHE BEI WEI HU ZHONG XIN,
BAO AN, SHENZHEN CITY,
GUANGDONG,
CHINA
CELLPHONE: 13923488897
ZIP CODE: 518028
i will offer you full-refund after i receive the returning package .
your understand would be much appraciated .
regards
janet
It does help my anger-management!:sigh:
thanks for contacting us.
since you are unsatisfied with these Item , we offer no-question-refund policy ,
you can return these Item to this address by ecomomy shipping ,
LI WEN
THE AIRPORT POST OFFICE, SHE BEI WEI HU ZHONG XIN,
BAO AN, SHENZHEN CITY,
GUANGDONG,
CHINA
CELLPHONE: 13923488897
ZIP CODE: 518028
i will offer you full-refund after i receive the returning package .
your understand would be much appraciated .
regards
janet
It does help my anger-management!:sigh:
Arkay
Lunatic Member
It isn't unheard of for products like garments, which are subject to quotas based on country-of-origin, to be deliberately mis-labeled. I'm guessing that ones marked "Made in Mexico" come in without taxes under NAFTA, whereas Chinese ones are subject to import duties? That would be a possible reason for a Chinese maker to deliberately label their products as Made in Mexico. Illegal, but many (not all) Chinese businessmen will do such things, to make a buck.
AK 47
Well-Known Member
These aren't the greatest pic's. But, you can see the varied mold marks, and the exposed insulating areas all measure a hair over 3mm vs normal hair under 6mm.
The 21194 on the far left is noticebly lighter during handling, has a 1mm thinner base plate and is the only one without the bulge/rounded hat.
I decided not to return for refund and filed a counterfiet claim on ebay
I may be totally wrong, but I would not think there would be that much variance, Chuck
mech986
Lunatic Member
Here's one of the first articles that chronicles fakes on major power transistors:
http://sound.westhost.com/fake/counterfeit-p1.htm
Here's another page directly dealing with the MJ21193/4. Note that the genuine Motorola is in a plastic power package. I don't have the datasheet to compare with though as to whether they also came in a TO-3 metal package like what you received.
http://sound.westhost.com/fake/counterfeit-p3.htm
What are the date codes on yours?
Probably just best to buy ON-Semi parts locally from US distributor. However, article says some ON-Semi fakes have also shown up.
Here's ON-Semi's dimensioning for TO-204 (Former TO-3) packaging from 1988 and still used today:
http://www.onsemi.com/pub_link/Collateral/1-07.PDF Note thickness of base plate.
http://sound.westhost.com/fake/counterfeit-p1.htm
Here's another page directly dealing with the MJ21193/4. Note that the genuine Motorola is in a plastic power package. I don't have the datasheet to compare with though as to whether they also came in a TO-3 metal package like what you received.
http://sound.westhost.com/fake/counterfeit-p3.htm
What are the date codes on yours?
Probably just best to buy ON-Semi parts locally from US distributor. However, article says some ON-Semi fakes have also shown up.
Here's ON-Semi's dimensioning for TO-204 (Former TO-3) packaging from 1988 and still used today:
http://www.onsemi.com/pub_link/Collateral/1-07.PDF Note thickness of base plate.
mech986
Lunatic Member
Just Checked On-Semi's website. Check under audio transistors and your part will come up. They do make it in a TO-3 package. Clicking on the link will bring you to the MJ21193 page:
http://www.onsemi.com/PowerSolutions/product.do?id=MJ21193
You can buy samples directly if you have an account. Or you can mouse over the Inventory link next to the price to see current inventory at major distributors including Digi-Key and Future Electronics that cater to small orders. If its available at Digi-Key, I'd certainly recommend them as a reliable supplier.
At DigiKey, Note the prices in single quantities for the available ROHS free part at $4.56 per for the 21193 and 21194. If you needed 2 of each, your total cost for the parts is under $20 and the shipping probably no more than $5. So, although double your cost from Ebay seller, peace of mind is priceless! Plus you know you got it from a well known ISO9001 American Manufacturer and American Distributor. In my mind, that's all good. :thmbsp:
http://www.onsemi.com/PowerSolutions/product.do?id=MJ21193
You can buy samples directly if you have an account. Or you can mouse over the Inventory link next to the price to see current inventory at major distributors including Digi-Key and Future Electronics that cater to small orders. If its available at Digi-Key, I'd certainly recommend them as a reliable supplier.
At DigiKey, Note the prices in single quantities for the available ROHS free part at $4.56 per for the 21193 and 21194. If you needed 2 of each, your total cost for the parts is under $20 and the shipping probably no more than $5. So, although double your cost from Ebay seller, peace of mind is priceless! Plus you know you got it from a well known ISO9001 American Manufacturer and American Distributor. In my mind, that's all good. :thmbsp:
Not one of those is an authentic On-Semi part.
These cost a whopping $3.63 ea from Mouser. Why buy from e-friggin-Bay (especially China, the home of 'here, please rip me off'?)
AK 47
Well-Known Member
I am thakful for the input and feel like a real dummy/traitor for doing what I did (I do try to exclude China, who I feel like, may be our second greatest enemy, from my day to day spending).
I have followed EW's advice"
'These cost a whopping $3.63 ea from Mouser. Why buy from e-friggin-Bay (especially China, the home of 'here, please rip me off'?)'
and place my order with Mouser (whom keeps me in constant reading material, lots and LOTS)
Thanx much, gang, Chuck
I have followed EW's advice"
'These cost a whopping $3.63 ea from Mouser. Why buy from e-friggin-Bay (especially China, the home of 'here, please rip me off'?)'
and place my order with Mouser (whom keeps me in constant reading material, lots and LOTS)
Thanx much, gang, Chuck
wickedweed
Active Member
i'm sure farnell doesnt deal with the counterfeits and that's why i ordered from them instead of going to the local shops here in Singapore. There was this time when I was at the shop looking for MJ15003/4 and I was offered two options: S$6 for Made in Mexico and S$4 for the Made in China replacement. Funny thing is that they don't call it a 'fake' but they will tell you that the latter may not be 'made to specs'.
:thumbsdn:, Chuck
