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Plug-in Screw Connector System for Printed Circuit Boards
110-M-121 /-221 | 3.50 mm (0.138 in) Spacing - 2-24 poles
PICTURES
110-M-121 110-M-221 110-M-221 & 110-A-111
TECHNICAL INFORMATION
Description
Header
110-M-221 is equipped with a poka-yoke feature on each end sidewall. This prevents incorrect misaligned plugging when utilized with 110-A series
plugs.
110-M-121 have a small foot print that allows a fit when replacing competitive product. This is especially useful on PCB that are typically completely
covered in components. It can be said that misalignment would in principle be prevented by the close components in close proximity.
Internal features prevent backwards insertion.
Installable on PCB assembled as per the wave solder technology specification
Coding keys 120-K are available to prevent the insertion of the wrong plug into a header. These are usually field inserted but can be factory installed if
required. These coding keys are visible from the exterior, through slots in the header. Correct keying requires the removal of corresponding keying
nibs from the 110-A plugs.
Technical Data
Center to Center Spacing: 3.500 mm (0.138 in)
Recommended Hole Diameter in PC Board: 1.200 mm (0.047 in)
Bill of Materials
Molding : Polyamide, Self extinguishing UL 94, V-0
Color : Grey
Temperature limits :
Short Time : 140°C (284°F)
Continuous : 105°C (221°F)
Low Limit : -40°C (-40°F)
Comparative Tracking Index : CTI ? 600 V
Oxygen Index Rating : 33 %
Solder Pin: Tin plated copper alloy 0.8 x 0.8 mm (0.03 x 0.03 in.)
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APROVAL INFORMATION
UL File No. E69841 | CSA File No. LR24322
Type Current (A) Voltage (V) Application
Group AWG Screw Tightening
Torque
110-M-121 /-221 8 300 B, D
3.5 mm
110-M-121 /-221 8 300 B
3.5 mm
Internationl Approval Information
Rated Impulse Withstand Voltage : 2500 V
PLUGGING PARTS
Plug-In Direction and Wire Entrance Perpendicular to PCB
TYPE 110-A-111
3.50 mm spacing - 2- 24 poles
TYPE 110-FP3-211
3.50 mm spacing - 2-12 poles
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TECHNICAL DRAWING
Description :
Length of Connector (L)
110-M-121: L = (No. of Poles x Center to Center Spacing) + 0.6 mm
110-M-221: L = (No. of Poles x Center to Center Spacing) + 2.6 mm
(A) Poka-Yoke feature
ILLUSTRATIONS
Description :
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SECTION A - SERIES 11
Terminal Blocks for Printed Circuit Boards
Series 11 brings versatility and reliability to making connections between printed circuit boards
and electronic or electrical components. The elevator-style clamping mechanism has excellent
contact qualities and resistance to vibration to ensure that connections are secure and reliable for
the life of the component the design allows an extremely large number of connect/disconnect
cycles without harming the connecting wires. The special design of the contact springs provides for
efficient long-lasting current transmission.
A variety of headers allow plug insertion parallel, perpendicular or 45-degree to the printed circuit
board providing flexible solutions to meet the needs of the designer. Headers are provided with
sidewalls for a greater degree of security contact pins are shrouded on five sides and prevent
contact pin misalignment with the plug’s contact springs. The design of series 11 eliminates
misaligned insertion of the plug in the header.
The plug uses the well-proven elevator-style clamping system. The captive screw design ensures
multiple wire insertion cycles and effective vibration resistance. The captive screws will not work
loose and be lost during transport, assembly or handling.Headers are also available with locking
flanges that interlock the plug and header after installation. The captive screws will not work loose
and be lost during transport, assembly or handling.
All single level headers with standard spacing provide 2 to 24 positions. For those applications
requiring very high wiring densities, our double level headers provide 4 to 48 poles.
If a printed circuit board design presents a difficult and crowded situation, raised headers are
available these allow the plug to connect to the high profile header outside the enclosure if needed.
Common applications requiring the use of high profile headers are those where the printed circuit
board is shielded in a cabinet or enclosure because of EMI interference, temperature or
atmospheric requirements, etc.
The friction-fit design of the plug and header includes a locking mechanism to prevent accidental
separation due to the effect of vibration while allowing easy disconnection when required.
Each product has a "How To Order" area as well as a complete listing of UL and CSA approval
specifications, available options and accessories.
