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. 917-5324
Mfr. Part No.225679
BrandERNI
R 157.996
Each (In a Pack of 5)
units
Vertical - 250A - - - 25 - Tin - - -
RS stock no. 481-3945
Mfr. Part No.8190-5
BrandKeystone
R 12.118
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
R 11.023
Each (In a Pack of 10)
units
Straight 22 → 14 AWG 15A - - - 4 Brass Nickel Red 14AWG 22AWG
RS stock no. 385-499
Mfr. Part No.SCRTM4RA
R 25.62
Each
units
- - - - - - 4 - - Natural - -
RS stock no. 917-5320
Mfr. Part No.225678
BrandERNI
R 128.984
Each (In a Pack of 5)
units
Vertical - 250A - - - 25 - Tin - - -
RS stock no. 917-5314
Mfr. Part No.225675
BrandERNI
R 83.586
Each (In a Pack of 5)
units
Vertical - 90A - - - 9 - Tin - - -
RS stock no. 122-4955
Mfr. Part No.7461058
R 235.77
Each
units
Vertical - 320A - - - 12 - Tin - - -
RS stock no. 917-5327
Mfr. Part No.225677
BrandERNI
R 95.642
Each (In a Pack of 5)
units
Vertical - 160A - - - 16 - Tin - - -
RS stock no. 717-6621
Mfr. Part No.216907-1
R 53.30
Each
units
Straight - 20A - - - - - - - - -
RS stock no. 163-1847
Mfr. Part No.7461058
R 196.633
Each (In a Box of 50)
units
Vertical - 320A - - - 12 - Tin - - -
RS stock no. 847-8710
Mfr. Part No.PCSB4-3-12Y
BrandPanduit
R 339.53
Each
units
Straight 14 → 10 AWG, 14 → 4 AWG - - Yes - 3 Aluminium - Natural 4AWG, 10 AWG 14AWG
RS stock no. 142-4083
Mfr. Part No.7466310R
R 79.82
Each
units
Right Angle - 50A - - - 2 Brass Tin - - -
RS stock no. 122-4979
Mfr. Part No.7461067
R 206.35
Each
units
Right Angle - 180A - - - 16 - Tin - - -
New
RS stock no. 205-3245
Mfr. Part No.74651194R
R 41.702
Each (On a Reel of 300)
units
Straight - 85 - - - 9 Brass - - - -
RS stock no. 163-1879
Mfr. Part No.7461114
R 136.055
Each (In a Box of 75)
units
Right Angle - 250A - - - 25 - Tin - - -
RS stock no. 142-4113
Mfr. Part No.74650195R
R 95.28
Each
units
Vertical - 85A - - - 9 Brass Tin - - -
RS stock no. 163-1860
Mfr. Part No.7461093
R 59.034
Each (In a Box of 500)
units
Vertical - 160A - - - 9 - Tin - - -
RS stock no. 176-9977
Mfr. Part No.7466105R
R 72.10
Each
units
Vertical - 70A - - - - Brass Tin - - -
RS stock no. 821-2494
Mfr. Part No.1-5055323-0
R 37.63
Each
units
Straight - 25A - - - - - - - - -
New
RS stock no. 205-3246
Mfr. Part No.74651194R
R 60.86
Each (On a Tape of 5)
units
Straight - 85 - - - 9 Brass - - - -