Transistor Question

[DANIEL HALL]

Any Idea Where I Can Get This Transistor Module
Mg100g1al2-4 (toshiba)
Is For A Inverter Spindle Drive

[2muchstuff]

Have you tried googling the part number.

[DANIEL HALL]

I Did I Try Google But All Of Them Are Out Of The Usa
Only Usbid.com But They Want $500 Minimun Order
And There Is Another One The Same $600 Min.

[2muchstuff]

I had also tried and there were all stocked overseas.

[NC Cams]

A lot of the imported hardware uses special parts and are not serviced at the component level. There are several reasons but these are 2 I learned while working at a machine tool component supplier:

Reason 1 : many of the Japanese machine tool builders figure that when the tool wears out or needs service, it is obsolete and should be replaced anyway. Thus, they don't stock service components.

Reason 2: they sublet parts of the machines to outside vendors with "special know how". Thus, they bought a "black box" assembly and don't service the subcomponents thereof. You may have such an item.

You may have to deal with Toshiba directly and be prepared for a substantial 'service' charge.

Don't be surprised if they charge you as much if not more to 'service' the unit than to replace. Why? They will probably actually replace it or send it back to their vendor for service and that explains why it will be so costly.

Isn't it fun learning about how other cultures think so differently from us when we are trying to get a dead machine back up and running???

[DANIEL HALL]

Thanks ,
To Fix It Yaskawa Wants 3000 And I Call Them They Do Not Have Transitors On Stock But They Can Fix It And Send It Back In 3 Days

I Email A Lot Of Companies I Am Waiting

[900steve]

here's a wierd story.

i just googled this p/n. and it turns out that one of the distributor/vendor for this part in china resides in the exacty same building as my engineering coutnerparts for the company i work for. i'll shoot off an email to a few of the guys there to walk over and check them out for you.

you got any more info on this p/n? type of transistor, size, package, etc?

-steve

[DANIEL HALL]

All I Know, Is A Power Transistor Module For A Spindle Drive , This Transistors Command The Spindle Motor The Driver Has 6 Of Them

Varispeed 626 Mtii From Yaskawa ( Spindle Model )

Thanks For The Help
I Will Be Waiting On Your Answer And I Cross My Fingers

[NC Cams]

Don't hold your breadth or cross your fingers too hard.

Wanna bet that the guys who share the building with 900STEVE's associates are brokers/trading company reps and wouldn't know a transistor from a tricycle???. This "trading company" thing is is how a lot of export business is done in Japan.

I'll be that this is a custom ASIC (application specific IC) that somebody crafted for the drive in order to integrate it into a custom package. Fanuc did a lot of that on their controllers - take <$3 worth of parts and package it in a chunk of epoxy and charge $250.

The way the system works is that some stuff MUST go thru the trading company. Look at a trading company as convoluted good old boy capitalistic system designed to increase profitiability by making work (and profit) by creating more middle man profit for manufacturer and distributor of the product. Reason: Many OEM's are part owners of the trading company.

We do a similar deal in the USA with wholesalers and distributors and dealers. Only in Japan, the T/C's do NOT cut price nor cut deals to the retail customer, especioally if it is an export customer. (do a google for "trade surplus imbalance" to learn why) They may not only make a lot on the original sale but they WILL make a SUBSTANTIAL profit on the service side if/when you need it.

Isn't this new global economy great????

BTW, I bet that $5-$600 minimum buy quantity from the electronic component clearing houses is starting to look MUCH more reasonable now, isn't it???

[900steve]

daniel,

so my friends said the office has 8 pieces in stock, and the sample price is $160 RMB, which equates to about $20 US. getting some more info and an official quote right now.

how bad you need this transistor module?


-steve

[NC Cams]

Don't forget the following:

freight

Insurance

customs fees

brokers fees

Letters of credit (some places won't ship without this and these can be a PITA to process).

Possible fraud: (friend went thru a "trusted broker" ,sent the money, got box of worthless junk. Never could collect the parts or the money back)

the "oops sorry" gambit: If these are somebody's "specials", the deal could go sour when somebody sees the invoice being processed and quash the deal.

Then again, what if the transistor isn't all that's bad???

Just some things to consider, that's all.....

I might also try to figure out what's so special about the module and engineer a standard parts replacement if at all possible. This could save a headache like this from recurring in the future.

[One of Many]

Originally Posted by NC Cams Don't forget the following: Then again, what if the transistor isn't all that's bad??? Just some things to consider, that's all..... I might also try to figure out what's so special about the module and engineer a standard parts replacement if at all possible. This could save a headache like this from recurring in the future.

I just replaced a Yaskawa F5 with an F7. The F5 had a transistor pack with 20 some odd solder lugs. It was 10 years old. $1300 for repairs or a $250 transistor pack if I wanted to risk it myself. The $1300 covered them IF they need to put in more than one pack due to the failure of other components etc. It was $1650 for the newer F7 with quite a bit of advanced features compared to 10 year old technology.

Originally the error code showed the DC bus fuse blown. It was near $30 for the fuse. Upon startup still no go, but the display now read;

"Puf, Output Trans Blown"

I guess one needs a sense of humor to read that as $POOF$? :frown:

I couldn't justify saving the $400 price difference as a reasonable risk on the older unit. The new one is going great!

DC