Author Topic: What's this please? (Component Advice)  (Read 562334 times)

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Offline Nermash

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Re: What's this please? (Component Advice)
« Reply #250 on: January 11, 2013, 09:18:06 am »
I googled a lot and could not find much info about the "SK" designator and component itself, found on the hard drive pcbs.

It looks like some ceramic resonator or filter....

Similar thread on Arduino forum with picture: http://arduino.cc/forum/index.php?topic=126081.0

Can anyone offer some definitive answer?
 

Offline SeanB

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Re: What's this please? (Component Advice)
« Reply #251 on: January 11, 2013, 02:01:38 pm »
Looks like a ceramic filter for sure, but the best would be to wait for Free_Electron to see, as he is the Hard drive Guru (amongst many other hats) here.

Up to you Vincent...........
 

Offline StuUK

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Re: What's this please? (Component Advice)
« Reply #252 on: January 11, 2013, 09:35:15 pm »
Has anybody got a clue what this mystery (to me) SMD component is. It's pictured next to a 5p (UK) coin, so its about 2cm/1inch long and the front of the component is transparent.

Even best guesses appreciated  :)

Piccy of front and back attached....
 

Offline SeanB

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Re: What's this please? (Component Advice)
« Reply #253 on: January 12, 2013, 05:12:56 am »
Surface mount connector. The mylar tape ( brown) on top is removed after soldering to enable the plugging in of the other side. From the looks of it it will be used to connect 2 pcb's together with the mating part having a similar footprint but a projecting plug. Common in cellphones and other small units as an interconnect.
 

Offline StuUK

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Re: What's this please? (Component Advice)
« Reply #254 on: January 12, 2013, 01:19:34 pm »
Thanks, that made sense. I removed one of the pieces of tape and could see that it is indeed a connector with a very fine pitch...
 

Offline dr_p

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Re: What's this please? (Component Advice)
« Reply #255 on: January 14, 2013, 06:10:55 am »
Folks, I have one unknown component. I think is a MOSFET, but can't just figutre out what. IRF Z46 maybe? But that is TO-220.
« Last Edit: January 14, 2013, 06:12:56 am by dr_p »
 

Offline amyk

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Re: What's this please? (Component Advice)
« Reply #256 on: January 14, 2013, 06:28:41 am »
 

Offline dr_p

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Re: What's this please? (Component Advice)
« Reply #257 on: January 14, 2013, 11:07:48 pm »
 :palm: thank you
 

Offline G7PSK

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Re: What's this please? (Component Advice)
« Reply #258 on: January 18, 2013, 02:07:33 pm »
 This is not a component as such, more of an assembly of a quarter inch jack socket with a piece of wire in a yellow container. I got them in among a job lot at an auction. Does any one know what these are used for as I have no idea.
 

Offline SeanB

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Re: What's this please? (Component Advice)
« Reply #259 on: January 18, 2013, 04:35:58 pm »
Probably were a ground lead for something.
 

Offline StuUK

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Re: What's this please? (Component Advice)
« Reply #260 on: January 20, 2013, 05:23:02 pm »
Any ideas what this 40 PIN DIP IC is please  |O, before I chuck em?

 

Offline SeanB

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Re: What's this please? (Component Advice)
« Reply #261 on: January 20, 2013, 05:37:50 pm »
Peel the label off..... Most likely an OTP microcontroller, or if you are lucky a EEPROM device that can be erased.
 

Offline StuUK

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Re: What's this please? (Component Advice)
« Reply #262 on: January 20, 2013, 06:09:25 pm »
 :) Should have been brave enough to do that in the first place, turns out to be a Microchip

PIC16C74B-041/P4AP
052338H

http://ww1.microchip.com/downloads/en/DeviceDoc/30605c.pdf

I would assume its probably been factory programmed with some proprietry code. I wonder (hope) if its reprogrammable as I have inherited 20 of these with a job lot 'lucky dip' of components.  ;D
 

Offline StuUK

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Re: What's this please? (Component Advice)
« Reply #263 on: January 20, 2013, 08:33:01 pm »
:) Should have been brave enough to do that in the first place, turns out to be a Microchip

PIC16C74B-041/P4AP
052338H

http://ww1.microchip.com/downloads/en/DeviceDoc/30605c.pdf

I would assume its probably been factory programmed with some proprietry code. I wonder (hope) if its reprogrammable as I have inherited 20 of these with a job lot 'lucky dip' of components.  ;D

 :-[ should have read more carefully, its OTP!!  :palm:
 

Offline SeanB

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Re: What's this please? (Component Advice)
« Reply #264 on: January 20, 2013, 08:48:52 pm »
Yes, but look first before binning, as they could be blank still, just having the label on  then never programmed.
 

Offline StuUK

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Re: What's this please? (Component Advice)
« Reply #265 on: January 20, 2013, 10:42:56 pm »
Yes, but look first before binning, as they could be blank still, just having the label on  then never programmed.

True, but how can I tell?
 

Offline SeanB

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Re: What's this please? (Component Advice)
« Reply #266 on: January 21, 2013, 04:45:57 am »
Stick them in a programmer and do a blank check....... Otherwise place in breadboard and add crystal and reset, then apply power and look for activity on pins which says a program is running. Blank will do nothing other than count up address range and roll over.
 

Offline StuUK

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Re: What's this please? (Component Advice)
« Reply #267 on: January 21, 2013, 08:52:15 am »
Stick them in a programmer and do a blank check....... Otherwise place in breadboard and add crystal and reset, then apply power and look for activity on pins which says a program is running. Blank will do nothing other than count up address range and roll over.

Thanks I'll give that a try (or at least hold onto them until I can)...
 

Offline UPI

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Re: What's this please? (Component Advice)
« Reply #268 on: February 26, 2013, 11:04:20 pm »
Does anyone recognize this connector and hopefully also know a place to purchase them?
The spacing between pins is .050" and it is mounted in a PCB that is .8mm or around .033" thick.

Thanks

 

Offline flolic

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Re: What's this please? (Component Advice)
« Reply #269 on: March 05, 2013, 09:39:30 pm »
Looking for any info for smd  component marked "K4A". It is most probably some kind of switching regulator IC.
Two of those are in power supply part of "AR.Drone" quadcopter that I'm trying to repair.


(image taken from some Russian forum)
 

Offline amspire

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Re: What's this please? (Component Advice)
« Reply #270 on: March 06, 2013, 02:21:42 am »
Looking for any info for smd  component marked "K4A".
It is a LM158 - a wide temperature range two opamp version of the common quad opamp LM324.

This version is in the DFN8 package which LM158QT.

If you are not using it under extreme temperature conditions, a LM358 in a suitable package would be fine.
 

Offline Mike_M

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Re: What's this please? (Component Advice)
« Reply #271 on: March 08, 2013, 03:23:58 am »
I've got a component that I would like to figure out what it is  =0).

Little rectangle notched on one side.   tapered back top.   and stamped with FIOY  (not sure if F10Y or FIOY) on it.

 

Offline flolic

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Re: What's this please? (Component Advice)
« Reply #272 on: March 08, 2013, 08:39:09 am »

It is a LM158 - a wide temperature range two opamp version of the common quad opamp LM324.

I'm afraid it's not  :-\
Pinout does not match at all, and this component must be some kind of switcher step down IC because it is connected directly to 4.7uH inductor.
 

Offline TerraHertz

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Re: What's this please? (Component Advice)
« Reply #273 on: March 08, 2013, 12:51:14 pm »
Here's an IC that is some kind of switch-mode controller. It's on an inverter-type microwave oven PCB which I'm interested in adapting as a HV power supply. Depending on whether the circuit is suitable.
So far, no luck searching for the part number: AN9DB07SB 929S6E02

The oven is a Panasonic NN-SD686S, but I've seen this identical inverter PCB used in two other different Panasonic microwave ovens, so I'm hoping it's going to be common 'street findings' in future.

Full story with teardown pics here: http://everist.org/tales/20130308_microwave_hacks.htm
 
Collecting old scopes, logic analyzers, and unfinished projects. http://everist.org
 

Offline orbiter

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Re: What's this please? (Component Advice)
« Reply #274 on: March 08, 2013, 01:26:50 pm »
Here's an IC that is some kind of switch-mode controller. It's on an inverter-type microwave oven PCB which I'm interested in adapting as a HV power supply. Depending on whether the circuit is suitable.
So far, no luck searching for the part number: AN9DB07SB 929S6E02

I believe the logo is the Matsushita/Panasonic logo. The only info I can find remotely relating to that series of IC is this one.

http://www.semicon.panasonic.co.jp/ds4/AN9D_E_discon.pdf


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