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Questions tagged [jumper]

Conductor used to close/open a circuit by connecting/disconnecting a pair of circuit nodes on a PCB. Circuits can also be bypassed using this method by connecting circuit nodes in order to short out the circuit to be bypassed. Jumpers are often used to configure a PCB.

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Jumper on 100 Mbps Ethernet

Is it possible to pass a 100BASE-TX signal (100 Mbps Ethernet, over 2 differential pairs) through jumpers (one per wire), in order to allow the user to select Ethernet or serial for a given connector? ...
Sandro's user avatar
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1 vote
3 answers
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Is there a standard for labeling PCB jumpers by their function (enable or disable)?

For example, I have a circuit with different revisions that had to have two different voltage regulators. The original regulator needed a jumper pad cut to disable it, the other needed a solder pad ...
FDecker's user avatar
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1 vote
1 answer
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How to determine contacts to jump a SMD button on garage door remote?

I am attempting to control my garage door remote using a Raspberry Pi controlled relay. I have done this in the past with other remotes (i.e. the relay part is not an issue), but my new house's garage ...
Oliver Cooper's user avatar
-3 votes
2 answers
256 views

Symbol for ground vs symbol for a battery [closed]

Could anyone help me to understand if this picture is correct? It is to understand the difference between the symbol of a battery terminals and the symbol of a ground terminal. I would also ...
Daniel Prieto López's user avatar
16 votes
5 answers
3k views

What is an ideal layout for a normally-open solder jumper?

We would like to make a normally-open solder jumper between two 50x50mil unmasked square pads. I've seen this kind of thing by others and would like to replicate it in our layout. We tried a simple ...
KJ7LNW's user avatar
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4 votes
1 answer
145 views

What are these small tubes soldered into through holes for jumper wires called?

I am working with ancient 70s PCBs and have encountered these small metal tube-like posts that appear to be soldered into through-holes. They are used to make and remove optional jumper connections ...
BZo's user avatar
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0 votes
0 answers
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How to Design Jumpers to Connect a circuit and Disconnect another

I'm designing a PCB where I will use either a Micro SIM through a SIM card holder or an eSIM. I thought I would use a solder jumper to let the user select which SIM option to use, but I don't know how ...
Mohamed Abduljawad's user avatar
1 vote
2 answers
137 views

How to convert from one header pin diameter to another?

I've unfortunately/accidentally purchased some 2.54 mm-pitch headers with pin-diameter 0.5 mm -- significantly thinner than the common DuPont cables with pin-diameter 0.64 mm. (When ordering them, I ...
SoreDakeNoKoto's user avatar
6 votes
5 answers
758 views

Why are the 3.3V and 5V power lines shorted in this diagram? [duplicate]

This is the official schematic of ESP32-CAM: Here is the area of interest: Why does this schematic imply that the 3.3V and 5V power lines are shorted through 0 ohm resistors? The masured voltage at ...
Paul Jurczak's user avatar
-1 votes
2 answers
304 views

SOT23 package jumper [duplicate]

I’m replacing some components on existing PCB, and I need to replace transistor in SOT23 package with a jumper. Problem is that none of the standard jumper packages are not suitable for more than a ...
Nikola50's user avatar
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118 views

MCP2515 CAN Transceiver Breadboard vs direct PCB Female Header connection

I have experienced a case, where I connect the MCP2515 over jumper wires to uC and everything works as intended. However, when I plug MCP2515 directly in the PCB (through female headers), the MCP2515 ...
Aljaz Jelen's user avatar
3 votes
1 answer
408 views

Does the dropper between the catenary wire and contact wire carry current?

From my observations, droppers are of metal and they do not have any insulation from the catenary wire or from the contact wire. The catenary and contact both carry the same phase and voltage so any ...
Ankit Kumar Vishwakarma's user avatar
1 vote
1 answer
883 views

Difference between jumper wires and jumper leads

I'd like to know what is the difference between a jumper wire and a jumper lead; sometime I found that they are synonims, other times I found that a jumper wire is the following: other times I found ...
Gennaro Arguzzi's user avatar
0 votes
2 answers
124 views

How to separate two boards joined by many folded jumper wires

I'm trying to fix an oven that is not heating. Based on voltage readings at the elements, I am highly suspicious of the relays. Apparently burnt relays or blown solder joints on the relays are a semi-...
twoeyes's user avatar
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0 answers
173 views

Can I put a 2 pin switch on breadboard busses?

I want to run a 12V battery into the breadboard busses, but they are 12 gauge wire so I want to use 2 pin screw terminals. The battery will power another device which also has 12 gauge wire so I'll ...
Ryan W.'s user avatar
1 vote
0 answers
445 views

Why can't my MOSFETs fit in my breadboard?

This is probably another question with obvious answers, but Googling didn't help. I bought an N-channel power MOSFET from Adafruit recently. I also bought a breadboard, also from Adafruit. However, ...
A. Owl's user avatar
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6 votes
2 answers
4k views

Designing a PCB that allows to measure current

What is the best way to "debug" the current in a PCB? My (first!) PCB has a 220v->5v PS on it. I would like to measure how much current is using after the PS to monitor how far from the ...
Carlos Garcia's user avatar
0 votes
0 answers
206 views

Female wires to connect 12V ECU to power supply?

I have extracted the ECU (engine control module) from car, however, this module has 3 pins that needs power input of 12V. Arduino jumper wires will not work as they won't withstand the current I need ...
John Sall's user avatar
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5 votes
4 answers
2k views

High current headers/ jumpers

The old fashioned way to configure a lot of boards is to use pin headers with their jumper cap, i.e.: https://www.tme.eu/en/details/jumper-kpl/pin-headers/connfly/ds1027-01-2ab801/ On my board I need ...
Mark's user avatar
  • 1,235
3 votes
2 answers
568 views

SMD thermal Jumpers

I would like to know why thermal jumpers are used. If lets say that we use thermal jumpers in the circuit and they get either short or open during operation. How does it effect my heat performance of ...
Sudhir Kumar's user avatar
1 vote
1 answer
684 views

Resistor that can be placed like a jumper

I want to make a relay output to be configurable by the client as NO/NC or guarded by resistors (10k opened, 1k closed). A solution I have been thinking about uses resistors that can be placed like a ...
Bart's user avatar
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0 votes
1 answer
429 views

Switch or Jumper or Relay?

I have already asked this question but again I am asking it with a clear view. As u can see in the diagram attached I need to divert power coming from inverter. I want to maintain the power flow ...
Manjesh Gowda's user avatar
1 vote
3 answers
1k views

Polygon not pouring over net tie pads in Altium

I am working with net ties in altium to link different ground signals. My net ties seem to work, no drc error, and I can link traces between them and objects of the same net. If I try to pour a ...
JCSB's user avatar
  • 287
2 votes
1 answer
955 views

Using net ties for star ground in Altium

I have been experiencing issues with net ties on altium. I am trying to join my separated analog and digital grounds at a single point (star ground) and I tried creating a net tie component to act as ...
JCSB's user avatar
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2 votes
2 answers
401 views

What is the purpose of this jumper in this amplifier schematic or PCB?

Some time ago I bought a little amplifier kit on Banggood based on the LM386 chip. After soldering the kit I tested it, and it worked great, so I decided to buy a few more of these kits to incorporate ...
Marlon's user avatar
  • 33
0 votes
0 answers
514 views

Male/female jumper wires for really small and close-to-each-other pins

I have a 20 pin 'male to male' 1mm pitch connector as shown in the included picture (I'm not sure if it's the correct name). One side will be soldered to the board, and the pins on the other side need ...
morecoffeeplz's user avatar
2 votes
2 answers
629 views

Are pins supposed to have the same thickness by some standard?

I bought a DHT-22 temperature sensor, some other sensors, and some jumper cables. The cable and the pins on other sensors and a Raspberry Pi fitted well, but the pins on DHT-22 seem thinner. The ...
Damn Vegetables's user avatar
2 votes
1 answer
1k views

What type of wire should i use to make a jumper on the PCB control board from my dryer? [closed]

Sorry for my ignorance on this topic. The relay (part G8P-1A4P 12VDC by Omron) on the PCB control board of my clothes dryer went bad. As a result, one of the pins and circle around the pin (sorry dont ...
M. Koz's user avatar
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1 answer
495 views

PIR motion sensor connected to Arduino sometimes does not detect a repeatable trigger

I have connected the PIR motion sensor HC-SR501 to an Arduino Uno and its jumper settings is set to H and GND. (This is not a physical jumper, but a small link that connects both H and GND.) It ...
Shashi Kiran's user avatar
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0 answers
279 views

PCB hole metallization

Is it mandatory to metallize the holes for the DIP package on a single-sided printed circuit board? And is it necessary to metalize the holes for the jumpers if they are on the outside of the ...
user10360597's user avatar
0 votes
3 answers
122 views

How do you call wire pins that can be used as jumpers with your breadboard?

I can't seem to find these things on electronics distributor websites. There are a bunch of various pins and connectors, but I can't find these among them. What are they called? I tried "Dupont 2....
bp2017's user avatar
  • 115
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0 answers
89 views

Does Molex SlimStack round cable jumper exist?

Today I learned the following connectors are a SlimStack plug and receptacle. However, I only found flex cables jumpers, like this one. Is there a reason round cables don't exist for this sort of ...
Anthony's user avatar
  • 101
13 votes
6 answers
8k views

What is the purpose of the PCB jumpers in the attached image

Can someone please tell me what may be the purpose of the jumpers in the attached image? Why not use a PCB trace instead? Figure 1 The PCB is a part of an old Videocassette recorder (VCR)
Yiftah's user avatar
  • 151
2 votes
1 answer
290 views

Connect rectangle pad to jumpers

I'd like to know some general approaches to creating DIY connectors for a custom PCB or card. Mainly I'd like to know how to connect some flat SMD pads to standard jumpers that would connect to a ...
Naxin's user avatar
  • 167
2 votes
1 answer
2k views

At what frequency does jumper wire stop functioning properly?

I have designed an IC with some digital circuitry requiring a 25 MHz clock signal. Now I'm designing a PCB to perform testing. My question is, would normal jumper wires be sufficient to pass a 25 MHz ...
Sidharth Thomas's user avatar
0 votes
6 answers
132 views

Permanent circuit board jumper - I have a RTC chip that kills soldered battery before clock set

If I wave solder in the battery, it begins draining rapidly until the RTC chip (clock) is set. So I installed a jumper. Now I manufacture without the jumper, and then in the bed of nails testing, I ...
Robert Farley's user avatar
0 votes
1 answer
72 views

Can I link mismatched parts with jumper wires?

I'm out of my element here and I don't know much about electrical engineering so please excuse the bad terminology. A light on my car stopped working and it's a long story but the easiest way to fix ...
yake84's user avatar
  • 103
1 vote
0 answers
725 views

SMD jumper design rules

The SMD jumper. One of the most basic devices on any board using SMD technology. Yet, considering devices from various sources and looking into the hints of designing it, I get differing techniques ...
Anonymous's user avatar
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2 votes
3 answers
811 views

Alternatives to Jumpers?

I have a need to be able to connect a lead on a circuit to 1 of 5 different other leads. I think it’s obvious how I can accomplish this with jumpers or DIP switches or encoders. The wrinkle here is ...
jsinglet's user avatar
  • 209
0 votes
1 answer
190 views

Dupont jump wire in order to replace 20 pin cable

Hello, I bought a mp5 player for my car and I didn't find the 20 pin cable for this player. My question is if I could replace it by Dupont jumper wires as the picture shows
SAID ES-SALMI's user avatar
0 votes
2 answers
72 views

How to inteprepret jumper confiuration guide on PCB?

So I have a M.2 to mPCIe adapter board that unfortunately I don't have any documentation for. The purpose of the board is to allow for a 4g M.2 modem to connect to a PC with a mPCIe slot. Presumably ...
fo0's user avatar
  • 13
2 votes
3 answers
1k views

Can I use individual strands in cat5 or cat6 solid core wire for pcb mods / jumper / repairs?

I have a small PCB repair I need to make. I am reading that wire-warp is a suitable option. I don't have any wire wrap, but I do have tons of cat5 and cat6 solid core wire. I was thinking about ...
Jimmie Dimmick's user avatar
0 votes
1 answer
59 views

Flexible GPIO routing Arduino shield

I want to make a combined MIDI In/Out/Thru + MDX Output shield, so I can order/design just one shield for all my needs. It is intended to use the shield for Arduino Mega which has 4 UARTs, and I want ...
Michel Keijzers's user avatar
4 votes
2 answers
1k views

How to join and connect two wires in one connector point professionaly in a high voltage PCB?

Regarding a HV (6KV) PCB design there is a part of the circuitry related to reed relay connection. I have chosen a HV relay (datasheet) with flying lead connection in order to separate physically LV ...
Suvi_Eu's user avatar
  • 851
0 votes
2 answers
129 views

Female to female jumper wires

Where are female to female jumper wires used? They only have provision to allow other wires to be plugged into so cannot be used on breadboards. So, practically, where are they used?
penguin99's user avatar
  • 859
0 votes
3 answers
113 views

What is the "socket" on Hirose DF13-series jumpers?

For this pre-crimped wire family with a "socket" at one or both ends: Hirose H*B**-101**-** with these mechanical drawings: All units expressed in mm. Here is ...
Reinderien's user avatar
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0 votes
2 answers
251 views

Use lithium ion car jumpstarter to charge netbook? [closed]

I have a Gooloo car jump starter pack. https://www.amazon.ca/gp/product/B06X9R8QSY Can I use it to charge a small Gateway Nav50 netbook? What kind of adapter would I need? I suppose I could use ...
TimH's user avatar
  • 103
1 vote
4 answers
428 views

Routing VCC with jumpers?

I'm trying to route a new VHF RF receiver (LO is 151MHz, RF is 162MHz). There's a pair of LC filters on this board, as well as a Si5351 oscillator and a crystal. From what I've read, an uninterrupted ...
blamblambunny's user avatar
2 votes
1 answer
463 views

How to Indicate Bridged Solder Jumper for Production PCBA

If I would like to indicate to the PCBA manufacturer that a solder jumper position is to be "bridged" with a solder blob, what is the preferred way to indicate this? I have thought of the following ...
crasic's user avatar
  • 5,838
0 votes
2 answers
613 views

SMD jumper vs current sense resistor

I need to use some sort of jumper to allow heavy current from terminal block to the relay pins: Dimensions shown in mm. I want to replace this trace with a jumper, preferably SMD. Going through ...
Whiskeyjack's user avatar
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