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. 122-4989
Mfr. Part No.7461001
£1.92
Each
Units
Vertical - 130A - - - 9 - Tin - - -
RS Stock No. 122-4957
Mfr. Part No.7460408
£3.18
Each
Units
Vertical - 175A - - - 12 - Tin - - -
RS Stock No. 122-4954
Mfr. Part No.7461057
£1.89
Each
Units
Vertical - 100A - - - 6 - Tin - - -
RS Stock No. 163-1884
Mfr. Part No.7461383
£1.11
Each (In a Box of 250)
Units
Vertical - 180A - - - 16 - Tin - - -
RS Stock No. 122-4994
Mfr. Part No.7461383
£2.00
Each
Units
Vertical - 180A - - - 16 - Tin - - -
RS Stock No. 162-1292
Mfr. Part No.7460553
£2.528
Each (In a Box of 100)
Units
Vertical - 240A - - - 10 - Tin - - -
RS Stock No. 122-4953
Mfr. Part No.7460553
£3.68
Each
Units
Vertical - 240A - - - 10 - Tin - - -
RS Stock No. 163-1861
Mfr. Part No.7461094
£2.00
Each (In a Box of 500)
Units
Vertical - 130A - - - 9 - Tin - - -
RS Stock No. 122-4990
Mfr. Part No.7461094
£3.06
Each
Units
Vertical - 130A - - - 9 - Tin - - -
RS Stock No. 163-1865
Mfr. Part No.7461098
£2.215
Each (In a Box of 150)
Units
Vertical - 250A - - - 25 - Tin - - -
RS Stock No. 122-4992
Mfr. Part No.7461098
£3.06
Each
Units
Vertical - 250A - - - 25 - Tin - - -
RS Stock No. 122-4991
Mfr. Part No.7461096
£2.49
Each
Units
Vertical - 130A - - - 9 - Tin - - -
RS Stock No. 163-1859
Mfr. Part No.7461090
£6.659
Each (In a Box of 75)
Units
Vertical - 340A - - - 20 - Tin - - -
RS Stock No. 122-4960
Mfr. Part No.7461090
£8.07
Each
Units
Vertical - 340A - - - 20 - Tin - - -
RS Stock No. 122-4952
Mfr. Part No.7460307
£2.00
Each
Units
Vertical - 160A - - - 8 - Tin - - -
RS Stock No. 163-1844
Mfr. Part No.7460307
£1.45
Each (In a Box of 250)
Units
Vertical - 160A - - - 8 - Tin - - -
RS Stock No. 122-4969
Mfr. Part No.7461063
£5.01
Each
Units
Right Angle - 160A - - - 8 - Tin - - -
RS Stock No. 122-4985
Mfr. Part No.7461114
£7.81
Each
Units
Right Angle - 250A - - - 25 - Tin - - -
RS Stock No. 163-1851
Mfr. Part No.7461063
£2.863
Each (In a Box of 250)
Units
Right Angle - 160A - - - 8 - Tin - - -
RS Stock No. 163-1879
Mfr. Part No.7461114
£5.811
Each (In a Box of 75)
Units
Right Angle - 250A - - - 25 - Tin - - -