Fake CDIL 2n3055?! I never said that. This transistors are genuine, has manufacturing fault i believe.
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No this is Genuine for sure. There must be a manufacturing fault. You should contact CDIL management through email for such a fault. I think the Management will be prompt to address the issue as this issue is linked to their reputation.
Why blindly blame CDIL? diyaudiocart may be a reputable store, but I am sure there is no guarantee that whatever they sell is A1 and genuine! Amazon is supposed to be a much more reputable seller with international fame, but their online store is full of fakes, duplicates and unreliable products.
I have used hundreds of CDIL devices (I'm a manufacturer of audio, Hi-Fi and PA equipment) without much problem. I think the source of your problem is the seller. You should have tried to return the transistors immediately to the seller (in case they have a return policy for semiconductors). If you have approach to a local electronics market, then try to buy from them since you can get a choice, and moreover, I have found out that shopkeepers actually declare a product as duplicate or genuine before selling. This is my experience in Delhi's Lajpatrai market. Hope that helps. 👍
I came across CDIL MPSA06‘s that turned out to be PNP, with a beta of about 400. A PNP with a gain of 400 costs more than an MPSA06 (Not much, but hard to believe faking). Probably a QC issue - mismarkings can happen. If they are having QC issues one place, they’ve got them everywhere. And as I alluded to before, a “non-authorized” distributor may be getting seconds that they can’t send to Mouser and they’d like to send them somewhere besides the scrap bin.
Not that ISO9000-or-whatever-thousand-they’re-up-to-now is any REAL help. With all that crap in place if there are real serious systemic quality problems going on in a fab your hands are so tied by the documentation process that there is no hope of fixing them in your lifetime. “This is the way the paper says to do it, so we are going to keep doing it so we pass the audits“ - even though product is ******.
Not that ISO9000-or-whatever-thousand-they’re-up-to-now is any REAL help. With all that crap in place if there are real serious systemic quality problems going on in a fab your hands are so tied by the documentation process that there is no hope of fixing them in your lifetime. “This is the way the paper says to do it, so we are going to keep doing it so we pass the audits“ - even though product is ******.
Mouser is hardly dominant in India, and I feel that CDIL has small volumes compared to the likes of ST and OnSemi.
But this incident shows the carelessness of the staff at least.
There were two plants of Ranbaxy in India, famous for FDA issues, they made medicinal drugs.
Ranbaxy sold the business to a Japanese company, they in turn sold it to Sun Pharma, an Indian company.
But the Dewas and Paonta Sahib plants still have issues with quality.
The people on the shop floor are still the same.
But this incident shows the carelessness of the staff at least.
There were two plants of Ranbaxy in India, famous for FDA issues, they made medicinal drugs.
Ranbaxy sold the business to a Japanese company, they in turn sold it to Sun Pharma, an Indian company.
But the Dewas and Paonta Sahib plants still have issues with quality.
The people on the shop floor are still the same.
Don't forget diyaudiocart not only sells electronic components but the 'one & only' online hi-end spkr driver seller of india. In the past i purchased several 20x more expensive transistor pairs from them, not a single failure. Btw no one buys audio grade electronic components from AMAZON except some cheap class-d amps & cheap quality resistors/capacitors.
On the other hand i'm not blindly saying this...i already did some tests. This is what happens when you rub aceton/ thinner on Fake transistors(see attached photo). CDIL 2N3055 passed this test. I already said that it seems a manufacturing fault so their quality control is poor or someone from CDIL factory selling this defective transistors to open market/vendors.
QC is big problem in India , Product quality and engineering is top notch for Indian Products but QC is terrible , Worker are strike company , dont believe me , see HAL or ISRO
Most likely someone from CDIL selling thrown out stuff
Most likely someone from CDIL selling thrown out stuff
Your image seems to have BEL image ,
2n3773 or 2n3055 if needed , BEL is best , even better than ONSEMI or ST, these are mil standard transistor , solid as rock
2n3773 or 2n3055 if needed , BEL is best , even better than ONSEMI or ST, these are mil standard transistor , solid as rock
Please read storage & qc section of their datasheet(CDIL 2N3055) you'll know. what is shelf-life of semiconductors btw? 🤣
Military tech moves slowly actually , so they try to get best at the time , and try to make it last long.
HAL SU30MKI use Intel 486 or Intel P4 for Mission computer , built in early 2000s , they try to use best rugged chips as
fighter jet built in early 2000s are still in service.
Tejas seems to use custom in house power pc chip
Rafale have extreme data fusion , i guess French uses some high end processor.
F22 Raptor built in 90s still Cutting edge and best you can get ,
Thats the story we consumer gets the oldest and rejected stuff.
HAL SU30MKI use Intel 486 or Intel P4 for Mission computer , built in early 2000s , they try to use best rugged chips as
fighter jet built in early 2000s are still in service.
Tejas seems to use custom in house power pc chip
Rafale have extreme data fusion , i guess French uses some high end processor.
F22 Raptor built in 90s still Cutting edge and best you can get ,
Thats the story we consumer gets the oldest and rejected stuff.