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. 821-2494
Mfr. Part No.1-5055323-0
PHP116.79
Each
units
Straight - 25A - - - - - - - - -
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. 164-2186
Mfr. Part No.1-5055323-0
PHP94.208
Each (In a Box of 1000)
units
Straight - 25A - - - - - - - - -
RS Stock No. 122-4985
Mfr. Part No.7461114
PHP492.38
Each
units
Right Angle - 250A - - - 25 - Tin - - -
RS Stock No. 163-1879
Mfr. Part No.7461114
PHP413.143
Each (In a Box of 75)
units
Right Angle - 250A - - - 25 - Tin - - -
RS Stock No. 163-3413
Mfr. Part No.7466113R
PHP103.831
Each (On a Reel of 500)
units
Vertical - 50A - - - - - Tin - - -
RS Stock No. 163-1884
Mfr. Part No.7461383
PHP103.929
Each (In a Box of 250)
units
Vertical - 180A - - - 16 - Tin - - -
RS Stock No. 614-2425
Mfr. Part No.7689
BrandKeystone
PHP26.537
Each (In a Bag of 10)
units
Right Angle 22 → 14 AWG 15A - Yes - 4 Brass Tin Natural 14AWG 22AWG
RS Stock No. 717-6621
Mfr. Part No.216907-1
PHP158.47
Each
units
Straight - 20A - - - - - - - - -
RS Stock No. 122-4994
Mfr. Part No.7461383
PHP131.20
Each
units
Vertical - 180A - - - 16 - Tin - - -
RS Stock No. 122-5145
Mfr. Part No.7466113R
PHP149.59
Each
units
Vertical - 50A - - - - - Tin - - -
RS Stock No. 176-9862
Mfr. Part No.7466005R
PHP73.726
Each (On a Reel of 600)
units
Vertical - 70A - - - - Brass Tin - - -
RS Stock No. 122-4983
Mfr. Part No.7461112
PHP327.92
Each
units
Right Angle - 180A - - - 16 - Tin - - -
RS Stock No. 178-8750
BrandRS PRO
PHP1.065
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. 122-4959
Mfr. Part No.7461086
PHP200.14
Each
units
Vertical - 175A - - - 12 - Tin - - -
RS Stock No. 917-5342
Mfr. Part No.225684
BrandERNI
PHP459.806
Each (In a Pack of 5)
units
Vertical - 160A - - - 16 - Tin - - -
RS Stock No. 162-2228
Mfr. Part No.7461129
PHP124.95
Each
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 718-9422
Mfr. Part No.167892-2
PHP133.26
Each
units
Straight - 40A - - - - - - - - -
RS Stock No. 163-1844
Mfr. Part No.7460307
PHP100.328
Each (In a Box of 250)
units
Vertical - 160A - - - 8 - Tin - - -
RS Stock No. 205-3246
Mfr. Part No.74651194R
PHP244.508
Each (On a Tape of 5)
units
Straight - 85 - - - 9 Brass - - - -