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. 122-4960
Mfr. Part No.7461090
TWD348.00
Each
units
Vertical - 340A - - - 20 - Tin - - -
RS Stock No. 177-0007
Mfr. Part No.74655095R
TWD149.00
Each
units
Vertical - 85A - - - 8 Brass Tin - - -
RS Stock No. 163-1869
Mfr. Part No.7461102
TWD312.00
Each (In a Box of 250)
units
Right Angle - 160A - - - 8 - Tin - - -
RS Stock No. 163-1867
Mfr. Part No.7461100
TWD247.90
Each (In a Box of 80)
units
Vertical - 340A - - - 36 - Tin - - -
RS Stock No. 162-2264
Mfr. Part No.7461120
TWD111.00
Each
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 163-1853
Mfr. Part No.7461066
TWD164.80
Each (In a Box of 250)
units
Right Angle - 130A - - - 9 - Tin - - -
RS Stock No. 163-1856
Mfr. Part No.7461084
TWD104.50
Each (In a Box of 150)
units
Vertical - 160A - - - 8 - Tin - - -
RS Stock No. 178-8752
BrandRS PRO
TWD0.90
Each (In a Bag of 100)
units
Straight 3 x 20 → 3 x 16 AWG - 3 x 20AWG - 3 x 16AWG - Thermoplastic - Blue - -
RS Stock No. 162-2242
Mfr. Part No.7461166
TWD175.00
Each
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 162-1769
Mfr. Part No.7461129
TWD56.20
Each (In a Box of 250)
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 142-4046
Mfr. Part No.74650094R
TWD152.00
Each
units
Vertical - 85A - - - 8 Brass Tin - - -
RS Stock No. 122-4975
Mfr. Part No.7461106
TWD410.00
Each
units
Right Angle - 240A - - - 10 - Tin - - -
RS Stock No. 205-3246
Mfr. Part No.74651194R
TWD141.20
Each (On a Tape of 5)
units
Straight - 85 - - - 9 Brass - - - -
RS Stock No. 917-5355
Mfr. Part No.225686
BrandERNI
TWD314.80
Each (In a Pack of 5)
units
Vertical - 360A - - - 36 - Tin - - -
RS Stock No. 122-4974
Mfr. Part No.7461104
TWD348.00
Each
units
Right Angle - 160A - - - 8 - Tin - - -
RS Stock No. 122-4979
Mfr. Part No.7461067
TWD400.00
Each
units
Right Angle - 180A - - - 16 - Tin - - -
RS Stock No. 162-1758
Mfr. Part No.7461082
TWD76.30
Each (In a Box of 500)
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 205-3245
Mfr. Part No.74651194R
TWD96.80
Each (On a Reel of 300)
units
Straight - 85 - - - 9 Brass - - - -
RS Stock No. 122-4994
Mfr. Part No.7461383
TWD86.00
Each
units
Vertical - 180A - - - 16 - Tin - - -
RS Stock No. 122-4973
Mfr. Part No.7461103
TWD216.00
Each
units
Right Angle - 160A - - - 8 - Tin - - -