Terminal Strips and Turret Boards
1. What are Terminal Strips and Turret Boards?
Terminal Strips: An electromechanical component used for electrical connection, which uses metal terminals to achieve a fixed connection between wires, and is commonly used for signal transmission and power distribution in circuit boards or devices.
Turret Boards: An insulating substrate with multiple metal terminals, which supports manual welding or mechanical fixing of components, and is suitable for high-frequency circuit debugging or prototype development scenarios.
2. What are the Features of Terminal Strips and Turret Boards?
Terminal Strip
Adopts modular design, which can flexibly expand the number of connection points;
Supports packaging forms such as SOP-8L, and is compatible with surface mount (SMT) technology.
Terminal Board
The substrate material is mostly phenolic resin or epoxy glass fiber, which has high temperature resistance;
Typical specifications include a 5.25-inch board, 12 terminals on each side, and supports double-sided wiring.
3. What are Terminal Strips and Turret Boards Used for?
Industrial Control: For internal connections of PLC, power distribution box, and other equipment;
Prototype Development: Replace traditional breadboards in the PCB design verification stage to provide more stable high-frequency signal connections;
Maintenance: As a temporary jumper interface to replace damaged PCB lines.
4. Typical Product Examples for Terminal Strips and Turret Boards
Keystone 15073: 50-position terminal block, RoHS-compliant, suitable for compact electronic devices;
Keystone 15312: 24-position double-sided terminal board, stock model supports rapid sample production.
5. Standards and Certifications of Terminal Strips and Turret Boards
Mainstream products must meet the environmental protection requirements of the RoHS directive and pass UL insulation grade certification.
6. Terminal Strips and Turret Boards FAQs
1) What are the common installation methods for Terminal Strips and Turret Boards?
PCB Installation: Solder to the circuit board through straight or right angle pins.
Surface Mounting: Some models can be directly fixed on the surface of the device or inside the chassis.
Hole Mounting: Some models are designed for through-hole fixing, suitable for scenarios that require mechanical reinforcement.
2) What are the key parameters to consider when selecting Terminal Strips and Turret Boards?
Center Spacing (Pitch): For example, the Keystone 4188 series provides a variety of spacing options to meet different wiring density requirements.
Material: For example, Adam Tech’s TB series uses crack-resistant thermoplastics, which is suitable for high-vibration environments.
Compatibility: The connector type (such as ClipTite terminals or Turret terminals) must be matched.
3) Do Terminal Strips and Turret Boards support customized designs?
Some brands (such as Keystone Electronics) provide standardized specifications to reduce tooling costs, but also support small batches of non-standard customization.
4) What precautions should be taken when connecting Terminal Strips and Turret Boards to PCBs?
During soldering, high temperatures should be avoided to damage the terminal material, and automated soldering processes are recommended.
For surface mount models, attention should be paid to PCB layout matching to prevent mechanical stress from causing poor contact.