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. 481-3917
Mfr. Part No.8190-3
BrandKeystone
PHP36.833
Each (In a Pack of 10)
units
Right Angle 22 → 14 AWG 15A - - - 4 Brass Nickel Black 14AWG 22AWG
RS Stock No. 614-2425
Mfr. Part No.7689
BrandKeystone
PHP22.70
Each (In a Bag of 10)
units
Right Angle 22 → 14 AWG 15A - Yes - 4 Brass Tin Natural 14AWG 22AWG
RS Stock No. 481-3945
Mfr. Part No.8190-5
BrandKeystone
PHP38.215
Each (In a Pack of 10)
units
Right Angle 22 → 14 AWG 15A - - - 4 Brass Nickel Blue 14AWG 22AWG
RS Stock No. 481-3973
Mfr. Part No.8191-2
BrandKeystone
PHP34.552
Each (In a Pack of 10)
units
Straight 22 → 14 AWG 15A - - - 4 Brass Nickel Red 14AWG 22AWG
RS Stock No. 2508829679
Mfr. Part No.8196
BrandKeystone
PHP34.96
Each
units
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RS Stock No. 2508829663
Mfr. Part No.1209
BrandKeystone
PHP50.92
Each
units
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