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| What is this chip's SOT number?? "TA 4c" filtering chip... |
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| junwoo091400:
Hi, I am currently looking inside a Device called 'M10 GPSonde'. And I ran into... let's say a Problem I was able to find some part's DATASHEET like 'the MCU (MSP430F23x) ', 'GPS (Trimble 63530)', 'Transmitter (ADF 7012)'. But AFTER that... I got stuck with VERY MYSTERIOUS components So... I'm seeking for a help from people who are interested in my question!!! and since the files are too big... I will give you guys a LINK to my google docs ======================================================================= https://docs.google.com/document/d/1cBWyd7TAhw9lC-dlNxIkK_DX0Nfh8_7OSs-B1fA5LMI/edit?usp=sharing ======================================================================= => 1) What kind of ICs are those ?? I would really appreciate your Suggestions!! (I really just want to know WHAT THEY DO!!!!!) => 2) If you have seen any of those, then PLEASE tell me their NAME!!! Now, thanks to everyone who helped me out, I am having only ONE component left : written "TA4C" ... color is GOLD and 3 pin on each side. You can see it on Google Docs, and it is IN BETWEEN 'gps antenna' and 'gps RF_IN pin' ... What is it?? Wish you have a Nice Day :) JW HWANG |
| Buriedcode:
Could be dual diodes, single diodes, or more likely transistors, possible 'bias' transistors - ones with built-in resistors to base and emitter. Have you tested them? Use a volt meter to measure diode Vf, then check the voltage between pins. As its in-circuit, this could skew results, so I would desolder one, and test it. |
| junwoo091400:
--- Quote from: Buriedcode on February 07, 2017, 04:27:44 pm ---Could be dual diodes, single diodes, or more likely transistors, possible 'bias' transistors - ones with built-in resistors to base and emitter. Have you tested them? Use a volt meter to measure diode Vf, then check the voltage between pins. As its in-circuit, this could skew results, so I would desolder one, and test it. --- End quote --- Thank you!! I will search more about measuring diode's Vf. And I should probably desolder them for sure! And it would be really nice if you can give me some advice on where you get those knowledge about Diodes and many others! I have tons of sites to visit, but I can't find a decent one. Maybe you can recommend me any source you know?? Thank you so much for replying. I've been waiting for couple of days and you replied!! :) |
| mikerj:
'1K' may denote it's a BC848 transistor. |
| junwoo091400:
--- Quote from: mikerj on February 07, 2017, 06:29:31 pm ---'1K' may denote it's a BC848 transistor. --- End quote --- Wow, Thanks!! At least now I know what '1K' stands for :) Thank you so much for helping me out! How did you know that?? |
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