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. 717-6595
Mfr. Part No.5055557-4
SGD7.64
Each
units
Straight - 25A - - - - Nylon - - - -
RS Stock No. 917-5324
Mfr. Part No.225679
BrandERNI
SGD12.79
Each (In a Pack of 5)
units
Vertical - 250A - - - 25 - Tin - - -
RS Stock No. 122-4983
Mfr. Part No.7461112
SGD9.88
Each
units
Right Angle - 180A - - - 16 - Tin - - -
RS Stock No. 163-1867
Mfr. Part No.7461100
SGD11.361
Each (In a Box of 80)
units
Vertical - 340A - - - 36 - Tin - - -
RS Stock No. 122-4957
Mfr. Part No.7460408
SGD6.05
Each
units
Vertical - 175A - - - 12 - Tin - - -
RS Stock No. 142-4012
Mfr. Part No.74650073R
SGD5.69
Each
units
Vertical - 50A - - - 4 Brass Tin - - -
RS Stock No. 162-2242
Mfr. Part No.7461166
SGD7.57
Each
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 122-5147
Mfr. Part No.7466213R
SGD3.86
Each
units
Vertical - 50A - - - - - Tin - - -
RS Stock No. 163-1868
Mfr. Part No.7461101
SGD5.481
Each (In a Box of 350)
units
Right Angle - 100A - - - 6 - Tin - - -
RS Stock No. 122-4954
Mfr. Part No.7461057
SGD3.75
Each
units
Vertical - 100A - - - 6 - Tin - - -
RS Stock No. 163-1873
Mfr. Part No.7461107
SGD19.903
Each (In a Box of 75)
units
Right Angle - 240A - - - 10 - Tin - - -
RS Stock No. 717-6599
Mfr. Part No.55556-4
SGD12.12
Each
units
Straight - 25A - - - - Nylon - - - -
RS Stock No. 163-1856
Mfr. Part No.7461084
SGD4.62
Each (In a Box of 150)
units
Vertical - 160A - - - 8 - Tin - - -
RS Stock No. 178-8753
BrandRS PRO
SGD0.058
Each (In a Bag of 50)
units
Straight 1 x 18 AWG, 3 x 20 → 3 x 16 AWG - 3 x 20AWG - 1 x 18 AWG, 3 x 16AWG - Thermoplastic - Orange - -
RS Stock No. 122-4975
Mfr. Part No.7461106
SGD18.42
Each
units
Right Angle - 240A - - - 10 - Tin - - -
RS Stock No. 122-4959
Mfr. Part No.7461086
SGD5.61
Each
units
Vertical - 175A - - - 12 - Tin - - -
RS Stock No. 122-4967
Mfr. Part No.7461147
SGD3.96
Each
units
Vertical - 180A - - - 16 - Tin - - -
New
RS Stock No. 217-5473
Mfr. Part No.5055556-9
SGD6.13
Each (In a Pack of 2)
units
Vertical - 37.8A - - - 10 Nylon - - - -
RS Stock No. 162-2120
Mfr. Part No.7461059
SGD14.45
Each
units
Straight - 240A - - - - Brass Tin - - -
RS Stock No. 163-1852
Mfr. Part No.7461064
SGD11.62
Each (In a Box of 75)
units
Right Angle - 240A - - - 10 - Tin - - -