This entry was posted on Wednesday, September 30th, 2009 at 5:22 pm and is filed under PCB FAQ. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.
Pls help to find datasheet for a smd diode (written on its body) p/n
S4
66A
The designator or legend on the pcb is CRxxx(numbers),as we know Q is for transistor,D for diode,etc and CR stand for what component?
Thanks!!
September 30th, 2009 at 6:16 pm
More than likely the S4 66A is a code that is used in lieu of the actual part number because the part number is too long to fit on the smd package. If this is the case (it probably is), the only way to get the actual part number and manufacturer is to ask the maker of the equipment it is in. But you probably can not get to the people who would know, so that would be a dead end. The only thing I can suggest is to find it on the schematic diagram of the equipment that uses the diode and see its function. An engineer should be able to determine the type of diode would be a good replacement.
Sorry I can’t be of more help.
September 30th, 2009 at 11:57 pm
Try digikey.com
Also they have free tech support avail at 1-800-digi-key
Give them the numbers, they can cross reference it and give you anything you want to know about the device.
The cool thing is it is free.