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. 122-4990
Mfr. Part No.7461094
HK$40.69
Each
units
Vertical - 130A - - - 9 - Tin - - -
RS Stock No. 163-1861
Mfr. Part No.7461094
HK$26.963
Each (In a Box of 500)
units
Vertical - 130A - - - 9 - Tin - - -
RS Stock No. 163-3413
Mfr. Part No.7466113R
HK$16.549
Each (On a Reel of 500)
units
Vertical - 50A - - - - - Tin - - -
RS Stock No. 481-3917
Mfr. Part No.8190-3
BrandKeystone
HK$5.937
Each (In a Pack of 10)
units
Right Angle 22 → 14 AWG 15A - - - 4 Brass Nickel Black 14AWG 22AWG
RS Stock No. 122-5145
Mfr. Part No.7466113R
HK$23.84
Each
units
Vertical - 50A - - - - - Tin - - -
RS Stock No. 122-4961
Mfr. Part No.7461148
HK$107.13
Each
units
Vertical - 130A - - - 8 - Tin - - -
RS Stock No. 122-4962
Mfr. Part No.7461061
HK$121.37
Each
units
Vertical - 340A - - - 36 - Tin - - -
RS Stock No. 162-1769
Mfr. Part No.7461129
HK$23.47
Each (In a Box of 250)
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 614-2425
Mfr. Part No.7689
BrandKeystone
HK$4.632
Each (In a Bag of 10)
units
Right Angle 22 → 14 AWG 15A - Yes - 4 Brass Tin Natural 14AWG 22AWG
RS Stock No. 162-2120
Mfr. Part No.7461059
HK$97.23
Each
units
Straight - 240A - - - - Brass Tin - - -
RS Stock No. 122-4971
Mfr. Part No.7461101
HK$55.44
Each
units
Right Angle - 100A - - - 6 - Tin - - -
RS Stock No. 142-4099
Mfr. Part No.74650194R
HK$47.97
Each
units
Vertical - 85A - - - 4 Brass Tin - - -
RS Stock No. 205-3245
Mfr. Part No.74651194R
HK$22.514
Each (On a Reel of 300)
units
Straight - 85 - - - 9 Brass - - - -
RS Stock No. 162-1753
Mfr. Part No.7461059
HK$58.257
Each (In a Box of 100)
units
Straight - 240A - - - - Brass Tin - - -
RS Stock No. 162-2097
Mfr. Part No.7461121
HK$62.08
Each
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 122-4963
Mfr. Part No.7461093
HK$51.70
Each
units
Vertical - 160A - - - 9 - Tin - - -
RS Stock No. 122-4972
Mfr. Part No.7461102
HK$121.37
Each
units
Right Angle - 160A - - - 8 - Tin - - -
RS Stock No. 163-1868
Mfr. Part No.7461101
HK$42.409
Each (In a Box of 350)
units
Right Angle - 100A - - - 6 - Tin - - -
RS Stock No. 164-0856
Mfr. Part No.55556-4
HK$45.937
Each (In a Box of 1000)
units
Straight - 25A - - - - Nylon - - - -
RS Stock No. 122-4965
Mfr. Part No.7461097
HK$33.22
Each
units
Vertical - 240A - - - 16 - Tin - - -