The KF390 / DG390 5.0mm Pitch 6-Pin Spring Terminal Block is a screwless, push-in cage clamp terminal block designed for rapid, tool-free wire-to-board electrical connections. Manufactured with a high-grade flame-retardant polyamide housing and high-tension stainless steel spring contacts, this 6-way terminal block delivers vibration-resistant wire retention, low contact resistance, and fast wiring assembly. It is widely used in industrial automation systems, multi-channel sensor hubs, RGBCCT smart lighting controllers, robotic motor interfaces, and custom microcontroller development boards.

Specifications

• Model / Series: KF390 / DG390 Series (Screwless Spring Terminal Block)
• Number of Pins / Ways: 6-Pin (6-Way)
• Pin Pitch / Spacing: 5.0mm (0.197 inches) / 5.08mm compatible
• Termination Method: Push-In Spring Clamp (Screwless / Tool-Free lever actuation)
• Rated Voltage: 250V to 300V AC/DC (IEC / UL standard)
• Rated Current: 10A (IEC) / 8A to 10A (UL)
• Dielectric Withstanding Voltage: 2000V AC for 1 minute
• Contact Resistance: ≤ 20mΩ
• Insulation Resistance: ≥ 5000MΩ (at 500V DC)
• Applicable Wire Gauge: 22 AWG to 14 AWG (0.5mm² to 2.5mm² solid or stranded wire)
• Wire Strip Length: 8mm to 10mm
• Housing Material: Polyamide (PA66, UL94 V-0 flame retardant)
• Contact / Pin Material: Tin-Plated Brass / Phosphor Bronze Solder Pins
• Spring Clamp Material: High-Tension Stainless Steel
• Operating Temperature Range: -40°C to +105°C
• Mounting Type: PCB Through-Hole Solder Mount

Features

• Screwless Push-In Clamping: Enables fast, single-handed wire insertion by simply depressing the top spring actuator lever with a small flat screwdriver or finger.
• Vibration-Proof Retention: Constant spring pressure automatically compensates for wire temperature changes and eliminates screw loosening caused by mechanical vibrations.
• High-Density 6-Pin Layout: Excellent for multi-line connections such as full RGBCCT LED lighting (+, R, G, B, WW, CW), rotary encoder signals with index, multi-channel relay controls, and expanded communication buses.
• Compact 5.0mm Pitch: Saves valuable PCB real estate while maintaining safe dielectric creepage and clearance distances between adjacent channels.
• Flame-Retardant Housing: Molded from UL94 V-0 PA66 thermoplastic to ensure superior thermal stability and safety under continuous current loads.
• Modular Side Interlocking: Features side dovetail tabs allowing multiple blocks to be linked together to create custom-length terminal strips.

Common Applications

• RGBCCT Smart LED Controllers: 6-wire output termination for Common Anode (+), Red, Green, Blue, Warm White, and Cool White channels.
• Robotics & Motion Control: Wiring for optical rotary encoders (VCC, GND, Channel A, Channel B, Index Z, Shield) and multi-axis limit switches.
• Multi-Channel Sensor Breakout Boards: Centralized wiring for multiple analog or digital sensor lines sharing power and ground.
• Industrial Control Panels & PLCs: Clean field wiring for multi-point discrete I/O, digital status indicators, and transducer inputs.
• Microcontroller Prototyping: Reusable, high-density I/O and bus expansion headers for Arduino, ESP32, and custom industrial controller boards.

Usage Tips

• Wire Preparation: Strip approximately 9mm of insulation from the wire end. For stranded copper wire, twisting the strands or crimping a bootlace ferrule ensures smooth, snag-free insertion.
• Wire Insertion: Press the top actuator lever down firmly using a 2.0mm–2.5mm flathead screwdriver, insert the stripped conductor fully into the clamp opening, and release the lever to lock.
• Soldering Precaution: Solder the through-hole pins at 350°C for no more than 3 seconds per pin to avoid thermal softening of the plastic casing or misalignment of the pins.
• Current Handling: Ensure PCB copper traces connecting to high-current pins have adequate trace width or solder reinforcement to carry up to the 10A rated capacity safely.