3 Position Wire to Board Terminal Block Horizontal with Board 0.100" (2.54mm) Through Hole #commonpartslibrary #connector #terminalblock

5 Position Wire to Board Terminal Block Horizontal with Board 0.197" (5.00mm) Through Hole #commonpartslibrary #connector #terminalblock #tht

4 Position Wire to Board Terminal Block Horizontal with Board 0.138" (3.50mm) Through Hole The TE Connectivity 284391-4 is a through-hole mounted PCB terminal block designed for wire-to-board power and signal connections in industrial and electronic control applications. The component belongs to the Buchanan series and features a side-entry wire interface with a horizontal mating orientation. The terminal block supports secure screw-clamp wire termination and is intended for reliable field wiring in low-voltage systems. The connector provides four positions with a 3.5 mm pitch and supports wire sizes from 14 AWG to 30 AWG. The housing is manufactured from polyamide PA66 (Nylon 6/6) with a UL94 V-0 flammability rating. Conductive elements are constructed from brass with tin-plated contacts and nickel-plated clamp and screw components to ensure corrosion resistance and electrical reliability. The device is rated for up to 12 A current and 300 V operation and is suitable for PCB-mounted applications requiring compact, stackable terminal connections. The terminal block includes side interlocking capability for modular multi-position expansion. Engineering Specification Component Type: PCB Terminal Block Manufacturer: TE Connectivity AMP Connectors Series: Buchanan Manufacturer Part Number: 284391-4 Connector Configuration: Wire-to-Board Mounting Type: Through Hole Wire Entry Orientation: Horizontal / Side Entry Number of Positions: 4 Number of Levels: Single Level Pitch: 3.50 mm Wire Termination Method: Screw Rising Cage Clamp Supported Wire Gauge: 14 AWG to 30 AWG Screw Thread Size: M3 Recommended Screw Torque: 0.25 Nm (2.2 lb-in) Rated Current: 12 A Rated Voltage: 300 V AC Housing Material: Polyamide PA66 (Nylon 6/6) Housing Color: Green Flammability Rating: UL94 V-0 Contact Material: Brass Contact Plating: Tin Clamp Material: Brass with Nickel Plating Screw Material: Brass with Nickel Plating Feature Set: Side Interlocking Capability Compliance: RoHS Compliant Mounting Orientation: PCB Straight Mount The component shall be used in applications requiring secure PCB-mounted terminal connections with moderate current handling capability and compact spacing. Typical applications include industrial control systems, embedded electronics, instrumentation, automation interfaces, and low-voltage power distribution assemblies. #commonpartslibrary #connector #header

6 Position Wire to Board Terminal Block Horizontal with Board 0.200" (5.08mm) Through Hole #commonpartslibrary #connector #phoenix

4 Position Wire to Board Terminal Block Horizontal with Board 0.200" (5.08mm) Through Hole #CommonPartsLibrary #Connector #TerminalBLock #Wire-Board #Molex

5 Position Wire to Board Terminal Block Horizontal with Board 0.200" (5.08mm) Through Hole #CommonPartsLibrary #Connector #Wire-Board #Buchanan #282837

2 Position Terminal Block Plug, Female Sockets 0.150" (3.81mm) 180° Free Hanging (In-Line) #commonpartslibrary #connector #terminalblock #femalesocket

16 Position Wire to Board Terminal Block Horizontal with Board 0.197" (5.00mm) Through Hole #CommonPartsLibrary #Connector #Interconnect #Terminal-Block #COMBICON-PT

5 Position Wire to Board Terminal Block Horizontal with Board 0.138" (3.50mm) Through Hole #connector #terminalblock #tht

4 Position Wire to Board Terminal Block 45° (135°) Angle with Board 0.138" (3.50mm) Through Hole #commonpartslibrary #connector #header

7 Position Wire to Board Terminal Block Horizontal with Board 0.197" (5.00mm) Through Hole #commonpartslibrary #connector #terminalblock

8 Position Wire to Board Terminal Block 45° (135°) Angle with Board 0.150" (3.81mm) Through Hole, Kinked Pin #CommonPartsLibrary #Connector #Terminal-block #WR-TBL Series 4123 #

3 Position Wire to Board Terminal Block Horizontal with Board 0.200" (5.08mm) Through Hole #commonpartslibrary #connector #terminalblock

6 Position Wire to Board Terminal Block Horizontal with Board 0.200" (5.08mm) Through Hole #commonpartslibrary #connector

4 Position Wire to Board Terminal Block 45° (135°) Angle with Board 0.150" (3.81mm) Through Hole, Kinked Pin #CommonPartsLibrary #Connector #WR-TBL Series 4123

9 Position Terminal Block Header, Male Pins, Shrouded (4 Side) 0.138" (3.50mm) 90°, Right Angle Through Hole #CommonPartsLibrary #Connector #Interconnect #Terminal-Block #Header #Plugs and Socket #COMBICON MC

2 Position Wire to Board Terminal Block Horizontal with Board 0.100" (2.54mm) Through Hole #commonpartslibrary #connector #terminalblock #tht

2 Position Wire to Board Terminal Block 45° (135°) Angle with Board 0.138" (3.50mm) Through Hole #commonpartslibrary #connector #terminalblock #tht

2 Position Wire to Board Terminal Block Horizontal with Board 0.150" (3.81mm) Through Hole ## Engineering Specification ## General Description The **1727010** is a Phoenix Contact **MKDS series PCB terminal block** designed for secure wire-to-board electrical connection in printed circuit board assemblies. It provides a compact screw-clamp termination interface for connecting external conductors to PCB circuitry. The component is suitable for industrial electronics, automation equipment, control modules, power interfaces, instrumentation, and general electronic assemblies requiring reliable field wiring termination. ## Device Identification Manufacturer Part Number: **1727010** Manufacturer: **Phoenix Contact** Product Name: **MKDS 1/ 2-3,81** Product Series: **MKDS** Product Line: **COMBICON Terminals** Device Category: **Connector and Interconnect Component** Device Type: **PCB Terminal Block** Connection Type: **Wire-to-Board Terminal Block** Termination Method: **Screw Connection with Tension Sleeve** Mounting Type: **Through-Hole PCB Mount** ## Functional Description The device functions as a fixed PCB terminal block that allows external wires to connect directly to the printed circuit board. The screw-clamp mechanism provides both mechanical conductor retention and electrical continuity between the field wiring and PCB circuit. This makes the component suitable for applications where wiring must be secure, serviceable, and accessible during installation or maintenance. ## Mechanical Description The terminal block uses a compact housing with side-entry conductor access and through-hole solder pins for stable PCB attachment. Its construction supports organized wire routing and practical access for conductor insertion and screw tightening. The design is suitable for compact board layouts where reliable field wiring connection is required. ## Electrical Description The component is intended for signal and low-voltage power connection applications within the manufacturer’s specified electrical ratings. It provides stable electrical contact when used with compatible conductor sizes, correct wire preparation, and proper screw tightening torque. ## Material and Contact Description The terminal block uses an insulating housing with internal conductive contact elements that transfer current from the inserted conductor to the soldered PCB pins. The screw connection with tension sleeve helps maintain reliable contact pressure and secure conductor retention during normal operating conditions. ## Mounting and Assembly Description The **1727010** is intended for through-hole solder mounting on a printed circuit board. The PCB layout should follow the manufacturer’s recommended hole size, pad pattern, spacing, and soldering guidance. The component should be positioned to allow safe wire insertion, screwdriver access, and adequate clearance from nearby components or enclosure walls. ## Application Suitability The device is suitable for industrial control boards, automation modules, power supply interfaces, relay boards, instrumentation equipment, sensor wiring interfaces, building control systems, communication hardware, and other electronic products requiring secure PCB wire termination. ## Design Considerations The design should account for conductor size compatibility, current requirement, voltage rating, tightening torque, creepage and clearance spacing, solder joint strength, wire routing, and service access. The terminal block should not be used beyond the manufacturer’s specified electrical, mechanical, or environmental limits. ## Hashtags #commonpartslibrary #terminalblock #pcbterminalblock #phoenixcontact #mkds #combicon #wiretoboard #screwterminal #fixedterminalblock #throughholecomponent #soldermount #connector #interconnect #fieldwiring #industrialelectronics #automationequipment #controlsystems #powerinterface #pcbdesign #hardwaredesign #electronicscomponents #electronicparts #engineeringparts #componentlibrary #electronicsengineering

4 Position Terminal Block Header, Male Pins, Shrouded (2 Side) 0.200" (5.08mm) Vertical Through Hole #commonpartslibrary #connector #terminalblock

3 Position Wire to Board Terminal Block Horizontal with Board 0.197" (5.00mm) Through Hole #commonpartslibrary #connector #terminalblock

2 Position Wire to Board Terminal Block Horizontal with Board 0.200" (5.08mm) Through Hole ## Engineering Specification ## General Description The **1726040** is a Phoenix Contact **MKKDSN series PCB terminal block** designed for wire-to-board electrical connections in printed circuit board assemblies. It is used to provide a secure screw-clamp interface between external wiring and PCB circuitry. The component is suitable for control systems, industrial electronics, power distribution circuits, automation equipment, and general electronic assemblies requiring reliable field wiring termination. ## Device Identification Manufacturer Part Number: **1726040** Manufacturer: **Phoenix Contact** Product Series: **MKKDSN** Device Category: **Connector and Interconnect Component** Device Type: **PCB Terminal Block** Connection Type: **Wire-to-Board Terminal Block** Mounting Type: **Through-Hole PCB Mount** Termination Method: **Screw Connection** ## Functional Description The device functions as a fixed printed circuit board terminal block that allows external conductors to be connected directly to a PCB. The screw-clamp mechanism secures the wire mechanically and electrically, providing a stable connection for signal or power circuits. The terminal block is intended for applications where field wiring must be removable, serviceable, and mechanically secure. ## Mechanical Description The component uses a compact green housing suitable for PCB-mounted assemblies. It is designed for side-entry conductor connection and horizontal board installation. The terminal block construction supports organized wire routing and convenient access for installation, maintenance, and service work. ## Electrical Description The terminal block is intended for low-voltage power and signal applications within the manufacturer’s specified current and voltage ratings. It provides reliable conductor contact when properly installed with compatible wire sizes and appropriate tightening torque. ## Material and Contact Description The connector housing is typically made from insulating material suitable for electrical safety and PCB assembly use. The internal conductive elements provide the electrical path between the inserted wire and the soldered PCB connection. Proper conductor preparation and screw tightening are required to maintain stable electrical performance. ## Mounting and Assembly Description The component is intended for through-hole solder mounting on a printed circuit board. Proper PCB hole sizing, pad layout, soldering process control, and mechanical clearance should be followed according to the manufacturer’s recommended design and assembly guidance. The terminal block should be mounted in a position that allows safe wire insertion and screw access. ## Application Suitability The **1726040** is suitable for industrial control boards, automation equipment, interface modules, power supply circuits, instrumentation, building control systems, relay boards, sensor wiring interfaces, and other electronic products requiring secure PCB wire termination. ## Design Considerations The design should account for wire gauge compatibility, current rating, voltage rating, tightening torque, creepage and clearance requirements, solder joint strength, and accessibility for field wiring. The terminal block should not be used beyond the manufacturer’s specified electrical, thermal, and mechanical limits. ## Hashtags #commonpartslibrary #terminalblock #pcbterminalblock #phoenixcontact #mkkdsn #wiretoboard #connector #interconnect #fixedterminalblock #screwterminal #throughholecomponent #pcbmount #industrialelectronics #automationequipment #controlsystems #powerdistribution #fieldwiring #electronicscomponents #electronicparts #hardwaredesign #pcbdesign #engineeringparts #componentlibrary #electronicsengineering

2 Position Wire to Board Terminal Block Horizontal with Board 0.300" (7.62mm) Through Hole #CommonPartsLibrary #Connector #TerminalBlock #Wire-Board

3 Position Wire to Board Terminal Block 25° (155°) Angle with Board 0.138" (3.50mm) Through Hole #commonpartslibrary #connector #terminalblock

2 Position Wire to Board Terminal Block Horizontal with Board 0.138" (3.50mm) Through Hole #commonpartslibrary #connector #terminalblock