Screw Terminals

A screw terminal is an electrical connector made from plated brass that enables wires to be connected directly to a PCB and consists of a metal frame and a screw. The screw terminal is secured to the PCB using mounting legs which are snapped into holes on the PCB and soldered into place. Pre-stripped wire is wrapped under the head of the screw and the screw is tightened down using a screwdriver making a secure electrical connection between the wire and the metal frame. Wires that are terminated with connectors such as spade or ring terminals are pushed into place over the screw. Screw terminals are available with a right angle or vertical mounting body orientation, different body platings and to suit a wide range of current ratings
Some screw terminals feature colour coded screws for ease of identification and to aid trouble shooting.


Benefits of Screw Terminals


• Simple to use and easy to snap into place. Only basic hand tools required
• Allow high density wire connections to PCB
• Low cost, eliminate the need for a mating connector
• When properly tightened provide an electrically secure connection
• Can be reused in the field allowing for the replacement of wires or equipment
• Can be used with solid, stranded and pre-terminated wire
• Kinked leg versions for extra retention on the PCB


Where are screw terminals used?


PCB screw terminals allow electrical signals and current to flow to and from PCBs and electrical equipment.


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Description Price Orientation Wire Size Current Rating Minimum Wire Size AWG Snap-In Maximum Wire Size AWG Number of Legs Body Material Body Plating Colour Maximum Wire Size Minimum Wire Size
RS Stock No. 176-9863
Mfr. Part No.746600430R
SGD2.47
Each (On a Reel of 950)
units
Vertical - 50A - - - - Brass Tin - - -
RS Stock No. 122-5145
Mfr. Part No.7466113R
SGD3.81
Each
units
Vertical - 50A - - - - - Tin - - -
RS Stock No. 122-4981
Mfr. Part No.7461110
SGD10.13
Each
units
Right Angle - 130A - - - 9 - Tin - - -
RS Stock No. 917-5355
Mfr. Part No.225686
BrandERNI
SGD15.932
Each (In a Pack of 5)
units
Vertical - 360A - - - 36 - Tin - - -
RS Stock No. 162-1762
Mfr. Part No.7461121
SGD4.619
Each (In a Box of 500)
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 142-4064
Mfr. Part No.74650173R
SGD6.15
Each
units
Vertical - 50A - - - 4 Brass Tin - - -
RS Stock No. 917-5314
Mfr. Part No.225675
BrandERNI
SGD6.28
Each (In a Pack of 5)
units
Vertical - 90A - - - 9 - Tin - - -
RS Stock No. 122-4961
Mfr. Part No.7461148
SGD15.45
Each
units
Vertical - 130A - - - 8 - Tin - - -
RS Stock No. 162-2097
Mfr. Part No.7461121
SGD9.14
Each
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 177-0017
Mfr. Part No.74651195R
SGD4.69
Each
units
Vertical - 85A - - - 9 Brass Tin - - -
RS Stock No. 162-2118
Mfr. Part No.7461122
SGD7.46
Each
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 717-6621
Mfr. Part No.216907-1
SGD4.37
Each
units
Straight - 20A - - - - - - - - -
RS Stock No. 142-4113
Mfr. Part No.74650195R
SGD6.92
Each
units
Vertical - 85A - - - 9 Brass Tin - - -
RS Stock No. 162-2108
Mfr. Part No.7460211
SGD10.90
Each
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 163-1884
Mfr. Part No.7461383
SGD2.109
Each (In a Box of 250)
units
Vertical - 180A - - - 16 - Tin - - -
RS Stock No. 176-9864
Mfr. Part No.74655095R
SGD3.686
Each (On a Reel of 600)
units
Vertical - 85A - - - 8 Brass Tin - - -
RS Stock No. 718-9422
Mfr. Part No.167892-2
SGD3.68
Each
units
Straight - 40A - - - - - - - - -
RS Stock No. 164-0856
Mfr. Part No.55556-4
SGD6.87
Each (In a Box of 1000)
units
Straight - 25A - - - - Nylon - - - -
RS Stock No. 122-4974
Mfr. Part No.7461104
SGD15.45
Each
units
Right Angle - 160A - - - 8 - Tin - - -
RS Stock No. 385-499
Mfr. Part No.SCRTM4RA
SGD1.57
Each
units
- - - - - - 4 - - Natural - -
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