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Questions tagged [screw-terminal]

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Terminating wires into circular connector panel mount screw terminals properly

This circular panel mount has screw connectors that I'm unfamiliar with, and I'm having a hard time finding out online how to terminate my cables properly in them. I'm used to crimping ferrules onto ...
kekpirat's user avatar
  • 115
2 votes
2 answers
691 views

How reliable are screw terminal blocks when the connected cables are allowed to sway a little bit?

2.54 Screw terminal blocks are a really convenient way to wire up devices without the need to solder a port or a jack connector. However, with all their convenience, how reliable are screw terminal ...
Noideas's user avatar
  • 109
4 votes
1 answer
502 views

3.5mm pluggable screw terminal, but male side PCB mount

I have a few NI USB-6000 DAQs with a 3.5mm pluggable screw terminal. I want to used them in battery prototyping so I'll need to build a few unity gain differential opamps for cell voltage monitoring ...
Omagasohe's user avatar
0 votes
2 answers
101 views

Unclear pins for PCB terminal block

I want to use this terminal block on my PCB. However, the schematic and PCB footprint Mouser provides are unclear to me. Why are there 4 pins and what is my signal and ground pin? The data sheet does ...
ALUW's user avatar
  • 237
3 votes
1 answer
260 views

A question about type of electrical connector

I have some electronics equipment inside an enclosure and at some point many ground and supply wires needs to be joint. Focusing on the blue wires in the below photo, I soldered three wires on both ...
ty_1917's user avatar
  • 1,006
1 vote
1 answer
161 views

How To Connect Silver Wire Electrodes to Transimpendance Amplifier

As the title suggests, I need to connect silver electrode wires that are about 1 inch long and 1mm diameter (sticking rigidly out of a microfluidic cell) to a transimpedance amplifier. The problem is ...
Gerald Wilson's user avatar
0 votes
1 answer
59 views

Connecting PET films electrodes to PCB

I have a plastic PET film that has been sputtered with silver (electrode) I'm trying to connect the electrode to the PCB (there are pads in the PCB). What is the best way to achieve high conductivity ...
azam's user avatar
  • 3
1 vote
1 answer
342 views

Wire Prep for Spring Terminal Block

I am assembling an electrical system for a project, and I'm using these terminal blocks because of their ease of use. Currently my wire ranges from 14awg stranded to 20awg stranded (20awg has some ...
Aaron Beckman's user avatar
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0 answers
311 views

Multiple connections under a barrier terminal strip screw

Multiple connections under a barrier terminal strip screw. I know that you shouldn't place two wires under the screw of a breaker, called "double lugging" and can make for a bad connection ...
Sid 03's user avatar
  • 1
0 votes
1 answer
1k views

Measure current through a screw terminal

Let's say that I have two wires spliced together with a screw terminal: I don't know exactly how they are called in English, maybe Mammouth? These things here, where you have one wire "screwed&...
Russell Teapot's user avatar
4 votes
4 answers
1k views

How to connect a flex ribbon cable to a screw terminal block?

Does anyone have ideas on how to mate a flex PCB with a screw terminal block? Some background: At my workplace, we're using the following Keysight DAQM900A Datalogger MUX cards: In the past we've ...
Noah B's user avatar
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0 votes
3 answers
1k views

How to Solder a Screw Terminal to Square Pad Proto Board

I want to figure out the best way to solder each terminal of a screw terminal block to a row of this proto board that has square pads. None of the squares are electrically connected. I assume just a ...
AnalogDigital's user avatar
1 vote
2 answers
307 views

PCB edge connectors for either board to board and screw terminal

I am at the final stage of design a pcb and I am looking for a connector to power it (2 pins, more would be also ok). It has 2 use cases: I could be either used as a standalone product, in this case a ...
user1937747's user avatar
0 votes
0 answers
222 views

What caused these crystals to grow on overheated PCB?

Source This is a picture of a screw terminal on a 3d printer mainboard that overheated or caught fire, likely due to a loose connection or overcurrent. One thing that caught my eye is the crystal ...
swordfish45's user avatar
0 votes
0 answers
81 views

Part Name Identification - PCB mounted wire clamp terminal

I have a wall outlet that i took apart, and there are mounted wire terminal blocks there. I tried searching for what kind they are, and couldn't find anything. There is a screw that tightens a paddle ...
KingsInnerSoul's user avatar
0 votes
1 answer
63 views

Looking For a Specific Connector [closed]

I'm designing a single layer Aluminum PCB and all components needs to be SMD/SMT. I'm looking for a common connector that will deliver DC power at 24V and up to 5A minimum (10A ideally). Right now, I'...
Agriculex's user avatar
  • 495
0 votes
1 answer
355 views

Lab power supply screw plug

I'm intending to buy a lab power supply, high likely a .. I'm thinking about a Korad KA3005D (see picture below). It does not come with cables for the Red + and Black - terminals, and I (also) would ...
Michel Keijzers's user avatar
0 votes
2 answers
175 views

What the forklift is this gold piece on my push/pull connector?

I got a pseudo-lemo connector that seems to go together in the order the parts are laid down on the plastic baggy. The solder cup goes into the sliding part, and the rubber goes on the end to give ...
snowg's user avatar
  • 155
1 vote
0 answers
2k views

Ensuring good contact between ring terminals and the screw terminals they're bolted to

I'm working on a high-current switching converter for research purposes. Because of the voltages and currents involved, many components use screw terminals to connect to wires. I haven't used screw ...
Hearth's user avatar
  • 33k
2 votes
1 answer
99 views

What is this type of screw head for accepting test hooks connection called?

These screw heads are useful for retaining electrical connection with test hooks because of the two collars. What are these type of screws called?
hobbes33's user avatar
5 votes
1 answer
5k views

How many wires can I safely fit into this screw terminal?

I have about 40 positive and 40 negative 18 gauge wires that I am trying to connect to one DC power source. I have a few terminal blocks to achieve this. Each terminal block has 2 rows of 12 ...
Matt's user avatar
  • 185
0 votes
2 answers
625 views

Hack for connecting two terminal blocks?

If I bought some of these connectors. Is there an easy way to connect two of the green terminal blocks together? i.e. I would end up with a male to male DC adaptor. Could I do this without having ...
brucezepplin's user avatar
0 votes
1 answer
497 views

Practical way to splitting CAT5 for 1wire?

I'm planning Raspberry Pi system using One-Wire with thermometers (ca 10 pcs). My electrical skills are basic. I'm looking for a good way connecting stubs to main line. . The main line (green) 1 ...
Rax's user avatar
  • 101
0 votes
1 answer
437 views

Is there a better way to jumper 3 terminals together?

I can't find terminal block jumpers for sets of 3 and 5 terminals, just 10 and 2. So I took some 2-terminal jumpers and tried to accomplish what I needed to do but it looks unsightly and seems likely ...
Brad Hein's user avatar
  • 1,042
0 votes
1 answer
557 views

terminal block voltage rating

If there is a terminal block that has both a current and voltage rating, I am curious what are the risks of going above the voltage rating (but still staying under the current rating)? Would the ...
user2913869's user avatar
  • 1,091
0 votes
1 answer
3k views

Screw Terminal Broken Screw Removal [closed]

I have a NI DAQ and while connecting wires I tightened the screws a bit more. When I tried to unscrew, the screw head broke and came off. Now I am unable to remove the screws and use the particular ...
Ash's user avatar
  • 421
0 votes
2 answers
12k views

Why is the plastic around my battery terminal melting?

I am using 2 dry batteries for my backup UPS. For some reason the plastic around one of the terminals of a battery is melting and producing a lot of smell. Most of the times it works fine but at some ...
Asad Moeen's user avatar
0 votes
1 answer
249 views

How do I non-permanently connect stranded wire to small screw?

This seems rather trivial, but I can't seem to find much information on this after a bit of searching online. I'm working on a project right now that requires me attach a passive electrode to a wire, ...
Scorch's user avatar
  • 323
2 votes
1 answer
2k views

Terminal spacing for 120-240V

I have a board (Krida electronics, not mine) that uses 2-pole PCB screw terminal blocks with 0.2" (5mm) pin spacing for Line & Neutral input. The conductive parts inside the block are very close ...
Joshua Penn's user avatar
1 vote
2 answers
2k views

Screw Terminal Block Amperage Ratings

Does the 15A amperage rating for screw terminal blocks such as the ones shown below refer to each pole or to the entire product? I have a project that will require 5A on each pole. Would this block ...
joe's user avatar
  • 13
1 vote
2 answers
436 views

Using straight connectors with screw endpoint?

I am a complete newbie to wiring but have almost completed the install of a MOSFET board on my 3D Printer. Felt it was necessary to avoid potential fires that this particular printer is known for. I'...
Aidan Knight's user avatar
2 votes
1 answer
636 views

Pluggable terminal connector long term reliability

I'm investigating the issues related to long term reliability of pluggable terminals of "Phoenix" style. This terminals are available in a range of pitch and configurations (right angle, straight...). ...
Francesco's user avatar
  • 1,025
10 votes
5 answers
21k views

How to reliably secure stranded wire in terminal block?

My 18AWG stranded wire continues to come out of the terminal block it's screwed into. What are some ways that I can more reliably secure this in an industrial environment? Strip extra wire and loop/...
tarabyte's user avatar
  • 3,152
2 votes
1 answer
413 views

Replacing screw terminal

I have a robot using the following screw terminal : On the input side 2x 8 awg wires coming from the battery, on the other side 2 x 3 wires for 2 motor drivers and 1 step-down that power a single ...
LiohAu's user avatar
  • 121
14 votes
3 answers
6k views

Alternatives to screw terminals, breadboards for prototypes?

Often I want to connect components that operate at less than 5v (I mention this as it may have a bearing on the gauge of the wire?) But have an easy way to disconnect. Screw terminals are nice but ...
futurebird's user avatar
0 votes
1 answer
235 views

"backwards" screw terminals?

Sorry for the lack of proper terminology, but I don't know how to approach even wording a question about this, not to mention search terms. I've seen a lot of PCB-mount screw terminals that have ...
user371366's user avatar
-1 votes
1 answer
415 views

Connecting Terminal Blocks to Second PCB Board

I have a daughterboard with 3.5mm screw terminal blocks (such as Digikey part # 277-5749-ND) that has to be connected to the mainboard, with the daughterboard either parallel or perpendicular to the ...
Nyxynyx's user avatar
  • 1,151
5 votes
1 answer
40k views

Which Eagle part to use for this 2-pin Screw Terminal?

This is my first EAGLE design and I'm looking to add some a number of 2-position screw terminals (3.5mm pitch) PRT-08084. Problem: I can find the EAGLE part for ...
Nyxynyx's user avatar
  • 1,151
2 votes
2 answers
3k views

How to know which side of the terminal block on pcb drawing

I'm planning to use Seeed's PCBA Prototype, where they request to use their open parts library(if you want them to solder the parts for you). I came across their screw terminal block(part 3470070P1). ...
MW_hk's user avatar
  • 255
5 votes
5 answers
9k views

Why are some terminal blocks blue and grey in color

Looking at some terminal blocks like the one below, why are the top level positions color coded blue while the middle ones are in grey? I understand yellow-green are for ground connections. I am ...
Nyxynyx's user avatar
  • 1,151
0 votes
1 answer
4k views

Choosing Screw Terminals for connecting Arduino to other components

For connecting a 16 channel relay board to 16 devices running off 24VDC, and for connecting the relay board to Arduino, I am thinking of using screw terminals where one side of the terminals connect ...
Nyxynyx's user avatar
  • 1,151
0 votes
2 answers
630 views

What's the name of this tamper proof screw ? (looking for screwdriver type) [closed]

I'm trying to fix device witch contain tamper proof screw witch i'm unable to recognize. I have set of standard tamper proof screwdrivers but i'm unable to find any suitable. Could someone recognize ...
user37190's user avatar
0 votes
2 answers
829 views

Convert a 40 pin female 2.54mm pitch header to screw terminal blocks

I have the following board and I need to convert the 2 row 40 pin female header to screw terminal blocks. The pitch is 2.54 mm both horizontally and vertically. I've looked at ones such as this https:/...
yz10's user avatar
  • 101
2 votes
3 answers
2k views

Does an inexpensive screw terminal "expansion strip" exist?

I've got a messy security panel that needs cleaning up badly, as I need to connect another PCB for remote access and can't get the wires to reliably stay in place: If you look at the black, red, ...
Dave's user avatar
  • 3,800