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. 178-8752
BrandRS PRO
SGD0.04
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. 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. 178-8750
BrandRS PRO
SGD0.033
Each (In a Bag of 100)
units
Straight 1 x 20 AWG, 1 x 22 → 2 x 16 AWG - 1 x 20 AWG, 1 x 22AWG - 2 x 16AWG - Thermoplastic - Grey - -
RS Stock No. 178-8754
BrandRS PRO
SGD0.103
Each (In a Bag of 50)
units
Straight 1 x 14 AWG, 1 x 18 AWG, 1 x 18 → 4 x 14 AWG - 1 x 14 AWG, 1 x 18AWG - 1 x 18 AWG, 4 x 14AWG - Thermoplastic - Yellow - -
RS Stock No. 917-5324
Mfr. Part No.225679
BrandERNI
SGD9.718
Each (In a Pack of 5)
units
Vertical - 250A - - - 25 - Tin - - -
RS Stock No. 717-6595
Mfr. Part No.5055557-4
SGD5.91
Each
units
Straight - 25A - - - - Nylon - - - -
RS Stock No. 122-4983
Mfr. Part No.7461112
SGD8.02
Each
units
Right Angle - 180A - - - 16 - Tin - - -
RS Stock No. 122-4993
Mfr. Part No.7461100
SGD13.28
Each
units
Vertical - 340A - - - 36 - Tin - - -
RS Stock No. 176-9987
Mfr. Part No.7466005R
SGD2.93
Each
units
Vertical - 70A - - - - Brass Tin - - -
RS Stock No. 176-9860
Mfr. Part No.7466205R
SGD2.029
Each (On a Reel of 500)
units
Vertical - 70A - - - - Brass Tin - - -
RS Stock No. 163-1875
Mfr. Part No.7461110
SGD5.68
Each (In a Box of 250)
units
Right Angle - 130A - - - 9 - Tin - - -
RS Stock No. 142-4062
Mfr. Part No.7466303R
SGD3.37
Each
units
Right Angle - 50A - - - - Brass Tin - - -
RS Stock No. 122-4994
Mfr. Part No.7461383
SGD3.22
Each
units
Vertical - 180A - - - 16 - Tin - - -
RS Stock No. 122-4954
Mfr. Part No.7461057
SGD3.04
Each
units
Vertical - 100A - - - 6 - Tin - - -
RS Stock No. 122-4974
Mfr. Part No.7461104
SGD15.95
Each
units
Right Angle - 160A - - - 8 - Tin - - -
RS Stock No. 122-4991
Mfr. Part No.7461096
SGD4.01
Each
units
Vertical - 130A - - - 9 - Tin - - -
RS Stock No. 122-4969
Mfr. Part No.7461063
SGD9.30
Each
units
Right Angle - 160A - - - 8 - Tin - - -
RS Stock No. 164-2186
Mfr. Part No.1-5055323-0
SGD2.243
Each (In a Box of 1000)
units
Straight - 25A - - - - - - - - -
RS Stock No. 142-4083
Mfr. Part No.7466310R
SGD5.88
Each
units
Right Angle - 50A - - - 2 Brass Tin - - -
RS Stock No. 176-9862
Mfr. Part No.7466005R
SGD1.70
Each (On a Reel of 600)
units
Vertical - 70A - - - - Brass Tin - - -