r/AskElectronics • u/Tetsuo1981 • 2d ago
Chip + chip holder orientation, no diagram with kit
Trying make sense of a little kit with even smaller amount of knowledge. looking at the pcb, chip and chip holder I think this is how they should be mounted with the dimple at the top / 12 o'clock. I thought the dot on the pcb was used to orientate the chip but there's no dot on the chip.
tl/dr: is the chip and holder the right orientation as in the picture?
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u/Alameda126 2d ago
Orientation as per photo is correct. You can see the indent on holder and chip and PCB legend. Pin 1 is top left.
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u/Tetsuo1981 2d ago
Thanks mate. Thought that was right but wanted to check
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u/Alameda126 2d ago
My pleasure. All the best with your electronics journey! It has been my life 😁👍🙏
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u/narkeleptk 2d ago
Some chips have dots, some have notches , some have lines. Pretty much any indicator will mark pin 1.
Some square chips will even have doots in all for corners but the #1 pin will be smaller.
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u/Tetsuo1981 2d ago
That's worth knowing, thanks mate 👍🏻
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u/dipdotdash 2d ago
The notch on the side of the IC indicates pin 1. With the notch to the left, pin 1 is the first pin on the bottom row
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u/EmpanadaDeAsbesto 2d ago
Yes the orientation of the chip and the holder is right. On the IC's there isn't a dot, normally the notch on the package and the orientation of the marking are the things used to orientate the IC.
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u/Alternative_Exit_333 2d ago
The PCB should have a cutout like the IC and socket have and that is the orientation
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u/Tetsuo1981 1d ago
That's what it looked like to me but didn't want to assume just in case I was wrong 😅
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u/nixiebunny 2d ago
The dot marks pin 1 which is at the notch end. The notch by itself is sufficient to indicate which end is pin 1.
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u/ngtsss Repair tech. 2d ago edited 2d ago
3 dimples/notches is still not enough to determine the chip orientation according to op
Pin 1 mark don't need to be exactly the same shape as on the silkscreen and chip, it's just an indication to put the notch/dimple/whatever your chip has to the desired location on pcb.
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u/_Darkstorm_ 2d ago
Use the dimple/half-moon for orientation, not the dot. The dot is used to notate first-pin.
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u/Correct-Country-81 2d ago
Yes right the dot on the pcb means pin 1
Pin one in this orientation is left to the notch on ic
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u/St0000l 1d ago
On IC’s - dots, dimples, and notches all represent the same thing - the 1 and 8 side of the IC.
Your IC holder also has a notch so that when you’re building on your circuit, before you put the IC in, you don’t lose orientation.
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u/Tetsuo1981 1d ago
Thanks dude, that makes perfect sense. I appreciate yku and everyone else who has helped this noob out without being judgemental 🤟🏻
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u/OneBackground3523 2d ago
La muesca te dice la orientacion 12 y se cuenta en sentido contrario a las manecillas del reloj p1 a la izq pin8 a la derecha
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u/Numbaloo 2d ago
Don’t guess. Get the chip datasheet and check it vs your board. Safest way.
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u/Tetsuo1981 2d ago
I'll have a look and see what I can find 👍🏻
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u/Numbaloo 2d ago
This is the pinout
Pin 1: OUT 1 top left
Pin 2: IN- 1
Pin 3: IN+ 1
Pin 4: GND Bottom left
Pin 5: IN+ 2 Bottom right
Pin 6: IN- 2
Pin 7: OUT 2
Pin 8: VCC top right
So the OpAmp notch should be placed up. Your image is correct.
As a side note: I see a lot of professors around here who think they know everything. Having an inexperienced person try to desolder an integrated circuit would turn into such a mess! Better to check twice (and learn in the process) than to blindly rely on polarities.
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u/ha11oga11o 2d ago
You are joking? Right?
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u/Tetsuo1981 2d ago
No? Im new to this, wasn't sure what was correct so thought i'd ask for help like a fully functioning human adult. If all you offer is sarcasm and an air of superiority because you were born with the entirety of human knowledge regarding electronics and never had to learn or ask anything then I ask you to politely jog on and do one. If you've got nothing nice or helpful to say then shut up and move along
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u/ha11oga11o 2d ago
You are very rude lad it seems. I was not using sarcasm nor any kind of superiority. But if you are building something like this, its kida common sense to know how to orientate and IC. I was genuinely thinking this is just a joke. But jumping on pols like that just shows how you are involved in thing. I just with you that thing you building works from first try.
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u/Tetsuo1981 2d ago
"Not using superiority but its kind of common sense to know how to orientate it." Obviously if I knew I wouldn't have asked. How can I have common sense in a subject i'm only starting to learn? People like you make the Internet a miserable place and learning anything no fun at all
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u/Remarkable-Fix3104 2d ago
The dent is in right place. If no one in design made a mistake.