What is this IC?

[Demon]

I labelled the drawer as 4021528 OP-AMP, but apparently it's not that (it's not 402152-E either).



A search for SN0536 is empty, and google image search throws up every SMD IC known to man.



It has the same marking style as this Microchip op-amp:



A google search for SN0722 brings up MCP601.


I have no idea where I got these.

[Jerson]

Could it be this one?
https://www.microchip.com/en-us/prod...#Documentation (Low-Cost NVM Digital POT with WiperLock™)

[Demon]

I think it's the old markings for a MCP614x op-amp. I "had" labeled the drawer as an op-amp.

I know it's 8-lead, pretty sure it's msop, but it can be any of MCP6141, MCP6142 or MCP6143.




I checked my order history at Digikey, Mouser, Newark, MicrochipDirect, even eBay, Amazon and AliExpress. No clue where I got these. I'm guessing a "lot purchase" on ebay a long time ago.

[Demon]

Here's another one for you.

I have it labeled as 1680FP-3 sensor actuator; no datasheet on hand either. I think they were samples cause they're in a Dallas/Maxim plastic box (now Analog). I vaguely remember going on these sites and ordering whatever free samples I could get.




Nowhere to be seen on google, except from what appears as warehouses in Asia:

- https://cn.exshinetech.com/products/1680FP-3.html
- https://www.abc-semi.com/products/C3A/1680FP-3.html

They have it labeled as QFP by Dallas, but their datasheet links are dead.

[Jerson]

https://www.alldatasheet.com/datashe...S1680FP-3.html

DS1680FP-3 Product details
DESCRIPTION
The DS1680 incorporates many functions necessary for low-power portable products, providing an RTC, NV RAM controller, microprocessor monitor, power-fail warning, 10-bit ADC, and a touch-screen controller in one chip.

FEATURES
■ Real-time clock (RTC)
- Counts seconds, minutes, hours, date, month, day of the week, and year with leap-year compensation valid up to 2100
- Power control circuitry supports system power-on from day/time alarm
■ Microprocessor monitor
- Halts microprocessor during power-fail
- Automatically restarts microprocessor after power failure
- Monitors pushbutton for external override
- Halts and resets an out of control microprocessor
■ NV RAM control
- Automatic battery backup and write protection to external SRAM
■ 1.25V threshold detector for power-fail warning
■ 10-bit analog-to-digital converter (ADC)
- Monotonic with no missing codes
■ Four-wire analog resistive touch-screen interface

[Demon]

Woot! Thanks!

And yet I screwed up cause I never use 3.3V, I should have taken the DS1680FP-5.

[Demon]

Drawer label said "wires".

I figure some sort of capacitor, not sure which variety.






And as I'm typing this I'm still googling and found this:

https://maker.pro/forums/threads/the.../#post-1734724

https://datasheets.kyocera-avx.com/SR-Series.pdf

105 = 1uF
E = Z5U
5 = 50V
M = 20%

I think it's SR215E105M or SL215E105M (mainly cause it's industry standard). The only thing that bugs me is that the dimensions are off, mine are:

6.25mm wide
7.1mm tall
3.1mm thick

That doesn't quite line up with any of them...?

EDIT: I'm sure I got this recently, and no orders matching this in 1uF from Digikey, Mouser or Newark.

[rsocor01]

Is the 451 marking in the back of the 1uF cap? If not, then it should be a 45 x 10pF = 450pF cap. I bought a leaded cap assortment one time, and it was a pain separating them by value. Some markings are not too obvious.

[Demon]

Is the 451 marking in the back of the 1uF cap? ...

Yeah, that's both faces of the same cap.

I'm "pretty" sure it's Kyocera. That post on MakerPro IDed the logo. Use the original link I got from google search:
https://electronics.stackexchange.co...d-which-datash

I use GENERIC on all my bulk purchases, with the most conservative ratings possible. ut this is a recent purchase, very possible at a local store with the specs got torn off when I opened the bag.

I'd really like to make an accurate label if at all possible.

[Demon]

...deleted blurb...


EDIT: And then I find this one, and it looks like my K when I SAVE and ZOOM.

https://ie.rs-online.com/web/p/mlccs...citors/6995165


EDIT SOME MORE:

Yeah, freagle70 IDed it as "most likely" SR-series from Kyocera as well.

https://www.reddit.com/r/AskElectron..._blower_motor/

[Ioannis]

Getting older I do not trust my eyes too much. So, a capacitance meter will help a lot. Even the cheap ones on chinese sites.

It would confirm the 1uF cap. As for the voltage and tolerance...

Ioannis

[Demon]

Could it be this one?
MCP4021 (Low-Cost NVM Digital POT with WiperLock™)
- Jerson

(quote wouldn't work, I had to write it manually)


Yup, you were right. The tray had 4 plastic tracks of ICs with these 4 markings (I had assumed wrong that they were all the same, D'uh):

402122E - MCP4021 2.1K
402152E - MCP4021 5.0K
402113E - MCP4021 10.0K
402153E - MCP4021 50.0K

They matched with another tray that had 2 of those ICs along with the DigiKey labels, and they correspond with the 4 package codes for SOIC/MSOP at the bottom of page 51 of the datasheet.

[Demon]

How about this one?

Looks like a diode. Tried to take pics all around by bending lead, not sure if I got them all.









I used 3x zoom, then cropped as much as possible.

I don't see anything...

[Jerson]

Possibly older version of the 1N4148 or 1N914 signal diode. If the body is bulkier, could be ancient germanium diode

[rsocor01]

Is that glass or clear plastic? It looks like a fuse or a diode.

[Ioannis]

I bet it is a germanium diode.

You can confirm it by applying say 10 volts with a 10K resistor and measure the voltage drop on the part pins. If it is around 0.2-0.3 volts the you can be sure for that.

Ioannis

[Demon]

I'm thinking germanium too, but even then, google seems to believe there isn't a standard bar code.

They look an awful lot like theses guys:

https://www.ebay.com/itm/125030406073


I still have to test the voltage.

(I'm cutting plexi right now)

[Demon]

I had to have a quickie look. Used 2 meters on diode mode and got these readings:



Is the top one measuring resistance (339)?




And is the bottom one measuring voltage (0.282)?

[Ioannis]

Then germanium it is!

Ioannis

[Jerson]

These used to be the AM detector diode commonly used in transistor radios in the 80's and early 90's

[Ioannis]

Then, Jerson, I bet you are around 60's ?

Ioannis

[Jerson]

Almost there

[Ioannis]

Obviously...!

Youngers I am sure do not know about AM demodulation through germanium diodes!

Once, at the age of 10-11, I made the first AM radio with such a diode, and an old telephone earpiece that was connected to a vertical metal waterpipe. It was amazing experience to here the local radio station with this!!!

Ioannis

[Jerson]

I still should be having a couple of germanium transistors AC187 or similar in my toolkit from way back when I used to repair equipments.

[Ioannis]

Oh, yeah, AC187/AC188 pair... Classic for the era. Me too have them!

Ioannis

[Demon]

So, you guy seem to indicate that this part was used shortly after the invention of flint arrowheads but before flintlock rifles?

[Ioannis]

You could say that...!