Questions tagged [through-hole]

Through-hole technology refers to the mounting scheme used for electronic components that involves the use of leads on the components that are inserted into holes drilled in printed circuit boards (PCB) and soldered to pads on the opposite side.

Filter by
Sorted by
Tagged with
1
vote
2answers
107 views

SMD vs. THT Difference [closed]

I want to know the difference between surface mount device and through hole components other than the mounting style. Differences such as if the through hole counterpart of the surface mount device ...
1
vote
2answers
92 views

Through hole solder pad dimension rules?

Is there an electronic rule or just a rule of thumb regarding through hole solder pad dimensions? That is, if I have a 0.025 inch diameter drill hole (suitable for 24AWG wire), what should be the ...
0
votes
1answer
44 views

Placement of Through Hole with a High Tolerance Dimension

Beginner question here. What does one do about the placement of the through hole when one dimension of the part has a high tolerance. For example, I place the through hole anticipating the center of ...
0
votes
1answer
37 views

Through-hole LED package identification

I am looking for a way to search for a replacement LED. Unfortunately I don't know the name of the package. The LED has a kind of conical recess at its tip to diffuse the light sideways instead of ...
4
votes
2answers
1k views

What is a 'piano THT' footprint for?

What is the 'piano' THT footprint for? Are these used for signal probing? See the second layout, as different from the first (KiCad ScreenGrabs).
2
votes
1answer
57 views

How do I solder thick goldplated DIA pins?

I am struggling with soldering some pretty think gold plated DIA pins to one of my boards. I've tried various things such as; Increasing the heat of my soldering iron, but am afraid of burning my ...
1
vote
1answer
119 views

PCB electroplating then etching

How can I protect the through holes copper which is electroplated from being etched away by the ferric chloride? Is there a resistive solution or it`s just the conductive ink.
10
votes
1answer
1k views

Which is better - components on both sides or components on one side of the PCB?

I am working on a PCB design. 50k PCBs will be produced. SMD components: 100 Through-hole components: 25 I need to minimize PCB size. There are no high-speed signals or sensitive signals in the ...
0
votes
2answers
123 views

Where can I look for USB 3.x superspeed mux chips for poor people that only have through-hole soldering tools?

I'm new to this realm of purchasing and I'm not exactly sure which of the different package names (SSOP, VQFN, etc.) are more friendly than others for basic through-hole soldering. I would also be ...
2
votes
1answer
86 views

What does this fabrication rule do?

Does the part that says, "Plate Through Holes with copper, 0.001" thick min" mean that 0.001" hole plating will be applied to all plated holes? I am new to the fabrication process and I am wondering ...
0
votes
2answers
64 views

drilling SMT footprints for fitting THT parts

I have bought by mistake some THT caps instead of SMD and would like to use them still. They were bought from a supplier who has the bad habit of not answering customer requests. These are 5000h caps, ...
9
votes
8answers
2k views

Assembly of PCBs containing a mix of SMT and thru-hole parts?

I have a batch of beta PCBs which we have to assemble in our lab. We have an APS manual pick-and-place machine and a tabletop reflow oven so I thought assembly tomorrow would be easy and straight ...
1
vote
1answer
265 views

Any way to surface mounting a through-hole resistor?

I need to solder a 2W through-hole Resistor on one side of pcb, mean like smd component but this is for through-hole resistor. I google and found there is a way call ...
3
votes
2answers
439 views

Eagle Drill vs. Diameter Parameters when making Through Hole Parts

I am working on making footprints in Eagle for a through-hole connector I want to use. I am running into some issues as I try to determine the appropriate diameter and drill size I need for the ...
1
vote
3answers
379 views

Copper dimension around the PCB component's hole (pad?)

I had my first PCB manufactured (by a Chinese manufacturer). In this first version I only used thru-hole components (not SMD). I used the latest version of Eagle to design it, without taking care to ...
0
votes
3answers
184 views

Why are THP 1/2W resistors bigger than 1/4W while 1206 resistors are all equal?

How come THM (through hole mounting) 1/2 W resistors are bigger than their 1/4 W or 1/8 W counterparts, while SMD 1206 1/2 W and 1/8 W resistors are equally sized?
1
vote
0answers
66 views

Reason for stepped pins on M12 circular connector

I've been looking at M12 circular connectors for a project I'm working on (for example this one, drawing here), and I've noticed that many/all of them have stepped pins that create a 3mm or so offset/...
6
votes
1answer
918 views

THT: What is a squared annular “ring”? [duplicate]

At least in KiCad, the footprints of through-hole pin headers have one squared annular “ring”, the other ones are round: What does the square indicate? (Also I’m wondering if there is perhaps a ...
2
votes
0answers
139 views

NeoPixel THT: Varying pinouts [closed]

I am in the process of designing a PCB for a solder kit that receives NeoPixel type LEDs, the ones with the short head: Now, there seem to be different pinouts: Ordered on Amazon.de as WS2811 LED ...
1
vote
2answers
393 views

What solder for low temp removal and resoldering to pcb

Have an issue with some legacy system - need to replace throughhole parts on PCB in situ while PCB is sandwiched between two sheets of acrylic with only small holes to access the leads on one side (i....
6
votes
1answer
2k views

Edge-mounted vias… or how is this called? And can PCBs services manufacture it?

As you can see, the through-holes (vias) are at the border of the inner cutout. (rendering is wrong of course, as vias are not cut) I imagine a manufacturer first prints the board and then cuts it, ...
0
votes
2answers
234 views

Reed Switch Failure Modes

I've been playing with these through hole reed switches: MDSR-4-12-23. It has been my experience so far that you have to be very careful in handling them, including when bending the leads to 90 degree ...
0
votes
2answers
592 views

Is the solder paste file necessary for through-hole components?

I have designed a PCB. There are only through hole components on the top layer, and only surface mount components on the bottom layer. Is TOP SOLDER PASTE file necessary to send to the PCB fabricator,...
0
votes
0answers
93 views

Can I use SMD components or do I have to stick to through hole?

I work in a company which develops devices that need to withstand harsh environmental conditions, shocks, radiations, vibrations and whatever. Really, too many to count. In one of those devices is a ...
7
votes
2answers
1k views

What is this component thingy?

I can’t find or describe what this component looks like. Out of curiosity, what is it? I found it on a PCB for a car alarm, but it has no silk-screen label... It has a grub screw that is adjustable. ...
0
votes
1answer
169 views

Through-hole solder sparking

Here is a simple example of what been happening to various pcbs when I play with them. I have an arduino powered by USB. Then a 5V and GND connected to a logic level shifter's HIGH and GND ...
1
vote
1answer
593 views

Through Hole (Vertically Mounted) SMA Connector on PCB - Feasible for GNSS Application?

Due to space constraints on a board I am designing, it is ideal to have the GNSS cable connecting vertically onto the top of the board. I haven't been able to find any edge-mounted connectors that go ...
4
votes
1answer
1k views

Hole Drill Sizes >1mm in Eagle?

I am currently trying to build a package for a through hole potentiometer in Eagle Cad and I wanted to incorporate holes in my PCB for the metal tabs on the side of the pot. I determined that these ...
3
votes
3answers
2k views

How to create custom through hole pad shapes in Altium Designer?

I'm trying to create a footprint for the ACS770 current sensor in Altium Designer (17.1), which has a quitte irregular shaped pad: ('round' pad shape with slot hole, and then a small cutoff in the ...
0
votes
1answer
510 views

Altium through-hole type, “slot” vs “rectangle”, effect on copper pour

I am drawing a board which will fit in an enclosure with batteries. The battery terminal tabs should come up through slots in the PCB, and solder to a pad around the slot perimeter. I created a new ...
0
votes
1answer
528 views

How can I draw in Eagle non circular through hole pads?

I made a custom part footprint in Eagle for a potentiometer ACP SPAIN 22k however in order to achieve a good fit I would like to draw non circuilar through hole pads. If you look at a picture of the ...
7
votes
6answers
2k views

Noisy signals with 2-layer PCB - What's wrong with my design?

For my master's thesis in computer science, I need to read out a TCD1304AP linear CCD sensor. A STM32 microcontroller with the circuit laid out on a breadboard gets the job done, but in order to make ...
10
votes
2answers
3k views

How do surface mount components withstand heat of reflow while through hole components can not?

I have read some online tutorials about soldering through hole components which say that transistors and ICs are delicate components and can be easily damaged by heat. So they recommend to keep the ...
2
votes
3answers
1k views

how to place decoupling capacitors on a four-layer board for through-hole components?

From what I've read online, for SMT components there should be traces from VCC/GND pins to the capacitor and then vias to the ground and power planes. The situation is a bit different for through-...
0
votes
2answers
725 views

I accidentally ripped out an eyelet/pth to my PCB when changing LED lights on a mechanical keyboard [closed]

I accidentally ripped out an eyelet/pth to my PCB when changing LED lights on a mechanical keyboard. I'm am a beginner to anything like this so please use layman's terms. Please site places I can use ...
5
votes
5answers
1k views

Tiny parallel eeprom

Is there such a thing as a low pin-count eeprom IC that can be used to replace logic circuits with just a couple of inputs and outputs? I'm thinking of DIP-16 or smaller, but it needs to be parallel. ...
0
votes
2answers
139 views

Newbie on SMD. From THM to SMD PCB design and manufacturing [closed]

I have made a prototype of a device using THM technology. Now one of my successful friends has suggested me to move the design to SMD technology to reduce component and PCB manufacturing costs. I have ...
2
votes
3answers
275 views

Damaged Solder Joint?

So I bought a SEGA CD off ebay and everything was fine until I decided that the duct tape that was holding the battery is was a poor substitute for a battery holder. So I took my Model 1 apart begun ...
0
votes
1answer
135 views

Altium pad features and difference between Hole Size and “X-size and Y-size under Size and Shape”

Could someone please explain what the green bit in the center is and what the silver ring on the outside represents? I'm trying to create a hole of a certain size and just want to know the difference ...
1
vote
1answer
1k views

How big should my pads and holes be based on this datasheet?

I've been trying to decipher the many numbers on the top picture, and it just doesn't make sense to me. Why would you need a hole of size 1.19 mm when the pins are only 0.45x0.58 mm? This leads me ...
3
votes
4answers
2k views

Can you put a through-hole part behind an SMT part?

I'm wondering if it's possible to place a through-hole connection on the opposite side of an SMT microcontroller. I have a small connector with a solder pin (for the shield) on one side of the board, ...
1
vote
3answers
636 views

Altium pads and holes print PDF

I'm trying to print a PDF to put my PCB design on copper, and I get the PDF document and everything seems to be alright but when I print my design the pads are filled in black. PDF Output And this ...
0
votes
1answer
161 views

Routing through-hole USB port

The difference in lengths of the differential pairs are tremendous, which is quite evident in the screenshot. I just don't see how I am supposed to length-match this. Tips will be appreciated!
0
votes
1answer
412 views

How to solder through-holes for quadcopter boards?

Its a flight controller for multicopters. Should i stick the wires from the top or bottom, and should i solder the top side or bottom side? I searched on youtube, but there is no definitive way to do ...
8
votes
2answers
3k views

How are through-hole boards mass-produced?

I'm familiar with the manufacturing process of surface mount boards. Chips come on reels (very high volume smaller parts), trays, or tubes. They are loaded into pick-n-place machines. The PCB, with ...
0
votes
1answer
165 views

D1 mini - pin hole / track repair

I've just bought a very bad quality D1 mini board. While soldering pins, I made rookie mistakes and I had to desolder, then (really bad) pads got detached from pcb. I certainly don't have experience ...
0
votes
1answer
2k views

delete drill layer in eagle without redoing board

When I go to make my own circuit boards with eagle, after saving, I run the drill-aid.ulp script so eagle can convert all over-sized drill holes to small size. It helps me with drilling. I then saved ...
1
vote
2answers
454 views

drilling pin header holes when exact drill size not locally available

I checked all of the hardware stores in my area and I can buy 1/32 (~ 0.79mm) and 3/64 inch (~ 1.2mm) drill bits. No source in my area carries bits which are between those two sizes which would then ...
0
votes
0answers
45 views

THT decopling capacitor spacing from the TQFP uC's power pin

simple question - how close can the uC's power pin (TQFP pad) and a ceramic cap's PTH pin can get so the PCB fabrication process or later exploitation would not go wrong ? Some ballpark figures for ...
3
votes
1answer
537 views

What is this IC “D4164D”

I found this component lying about, anybody have any idea what it is? I found a few people selling them on ebay but no description. The label says, "NEC 208 D4164D" Thanks,