Terminal Block 3-pin (KF126-5.0-3P)

Description

KF126-5.0-3P PCB Screw Terminal Block (3-Pin / 5.0mm Pitch)

Product Overview

The KF126-5.0-3P is a compact, single-row wire-to-board screw terminal block engineered for reliable power and signal distribution on printed circuit boards (PCBs). This 3-position component features a robust leaf-spring screw-clamp mechanism that provides excellent clamping force while protecting wires from direct screw damage.

With an industry-standard 5.0mm pin spacing, the KF126 series is widely favored by developers and manufacturers for its low profile and space-saving footprint. It is ideal for routing standard single-phase AC mains connections, 3-wire sensor arrays, and multi-rail DC lines directly into circuit architectures, making it a staple component for both commercial electronics and DIY hardware prototyping.

Key Features

• Protective Wire Guard Design: Built with internal leaf-spring brass contacts that compress uniformly against inserted wires, ensuring low contact resistance without tearing fine copper strands.

• Standard 5.0mm Pitch Profile: Features standard 5.0mm ($0.197\text{ inch}$) pin spacing, ensuring perfect drop-in compatibility with standard commercial PCB layouts and prototyping boards.

• Interlocking Modular Housing: Designed with interlocking side rails, allowing multiple 2-pin or 3-pin KF126 units to slide and lock together cleanly to create custom-length terminal arrays.

• Rugged, Flame-Retardant Shell: Molded from premium thermoplastic material (UL 94V-0) to withstand high mechanical stress, thermal cycling, and soldering heat without warping.

Technical Specifications

Applications

The ideal, economical connector solution for low-profile power delivery, compact enclosures, and peripheral connections:

• AC Mains Power Interfaces: Perfect for routing standard low-power single-phase AC lines requiring Line (L), Neutral (N), and Ground (G) connections cleanly into a board port.

• 3-Wire Sensor Arrays: Providing a clean, stable termination node for peripheral devices like ultrasonic rangefinders, infrared proximity switches, and digital temperature sensors requiring $VCC$, $GND$, and $Data$.

• Multi-Rail DC Networks: Ideal for organizing localized power routing across small project circuits requiring dual voltage references alongside a shared ground path.

• Microcontroller Prototyping Shields: Perfect for building clean power-delivery modules and basic breakout pins on custom Arduino shields, ESP32 test platforms, and development rigs.