KF300-5.0 DG300-5.0 Screw PCB Terminal Block | 5.0mm Pitch Fixed Barrier Wire-to-Board Connectorf
For switching power adapters, PLC auxiliary boards, sensor modules, household appliances and small industrial controllers, low-cost, compact and stable fixed PCB wiring terminals are the basic guarantee of mass production efficiency. KF300-5.0 and DG300-5.0 screw type PCB terminal blocks are universal interchangeable 5.0mm pitch barrier wiring connectors, sharing identical PCB footprint, wire clamping structure and electrical parameters. They can replace each other on circuit boards without redesigning PCB layouts, becoming the most cost-effective standard wire-to-board connection solution for consumer and industrial low-voltage electronics.
What Are KF300-5.0 & DG300-5.0 PCB Terminal Blocks?
KF300-5.0 and DG300-5.0 belong to the classic 5.0mm fixed pitch integrated barrier screw terminal series, fully compatible with each other in PCB hole layout and assembly size, only differing in brand naming and minor housing mold details.
- Core Standard Specs: Fixed center pitch 5.0mm, vertical through-hole DIP soldering pins, integrated single-piece barrier insulation shell, independent M3 screw clamping cavity for each pole.
- Available Pole Range: Customizable 2P,3P,4P,5P,6P… up to 24P to match multi-channel input/output circuits.
- Structural Classification: Standard straight pin version; optional wire guard baffle type to prevent thin stranded wire scattering during wiring.
- Color Options: Standard industrial blue shell; custom green, black, gray available for circuit classification.
Core Advantages Of KF300-5.0 & DG300-5.0 Screw Terminal Blocks
1. Full Interchangeable KF300 / DG300 Series, Zero PCB Modification Cost
The biggest advantage of our KF300-5.0 DG300-5.0 PCB terminal blocks is complete dimensional compatibility. Engineers can switch between KF300 and DG300 models arbitrarily without revising PCB Gerber files, reducing component procurement risks and flexible supply chain allocation. Uniform 5.0mm pitch reserves sufficient insulation creepage distance between poles, effectively avoiding short-circuit risks for 300V low-voltage circuits.
2. Reinforced M3 Screw Clamp, Anti-Vibration Stable Wire Locking
Adopt zinc-plated carbon steel captive M3 screws + thickened tin-plated copper alloy pressure plates. Uniform clamping force firmly locks solid single-core and multi-stranded flexible wires within 0.5~2.5mm². Even under long-term vibration of fans, motors and automation equipment, wires will not loosen or cause contact resistance rise. Closed screw guide holes prevent screws from falling off during repeated wire replacement, lowering equipment after-sales failure rate.
3. UL94-V0 Flame Retardant Insulation Shell, Wide Temperature Adaptability
Housing is injection molded with high-toughness PA66/PBT flame retardant material reaching UL94-V0 fire resistance grade, stable operating temperature range from -40℃ ~ +105℃. Independent partition barrier between each wiring pole blocks electric arc spread, with excellent anti-aging, oil mist and dust resistance, suitable for closed power supply enclosures, workshop control cabinets and outdoor miniature sensor equipment.
4. Compact Miniature Size, Optimize PCB Layout Space
Ultra-thin integrated molding design saves valuable PCB layout area, 5.0mm moderate pitch balances wiring operability and circuit board density. Standard vertical through-hole pins are perfectly matched with automatic wave soldering production lines, supporting high-speed mass assembly without manual correction, greatly improving electronic factory production efficiency compared with manual soldering wires directly to pads.
5. Complete Specs & Wide Application Coverage
Our full range KF300/DG300 5.0mm terminals cover all mainstream low-current electronic equipment wiring demands:
- Switching power supply, LED driver circuit board
- Temperature transmitter, signal isolator auxiliary PCB
- Household appliance control panel, charger mainboard
- PLC expansion module, small relay control board
- Medical instrument, security alarm sensor module
6. Global Export Compliance & Cost-Effective Wholesale
All KF300-5.0 and DG300-5.0 terminal blocks pass CE, RoHS, REACH international environmental certifications, fully meeting EU, Southeast Asia and North America export inspection standards. Stable stamping, injection molding and electroplating processes guarantee consistent product quality, support small sample trial orders and large batch bulk supply, with sufficient spot stock for fast global delivery to electronic manufacturers and component distributors.
Standard Unified Technical Parameters (KF300-5.0 / DG300-5.0)
- Fixed Pitch: 5.0mm
- Rated Voltage: 300V AC
- Rated Current: 10A~16A
- Withstand Voltage: 2000V AC / 1 Minute
- Applicable Wire: 0.5 ~ 2.5mm² solid & stranded wire (22~14AWG)
- Wire Stripping Length: 6~7mm
- Screw Specification: M3 Steel Screw, Torque 0.5Nm
- Housing Material: UL94-V0 Flame Retardant PA66 / PBT
- Conductor Material: Thickened Tin-Plated Copper Alloy
- Mount Type: Vertical Through-Hole DIP PCB Soldering
- Available Poles: 2P ~ 24P Customizable
- Certification: CE, RoHS, REACH Compliant
Step-by-Step PCB Soldering & Wiring Guide
- Insert vertical soldering pins of KF300/DG300 terminal into reserved PCB through holes;
- Complete wave soldering or manual soldering to fix terminal block firmly on circuit board;
- Strip wire insulation to 6-7mm to expose neat copper core;
- Insert clean wire core into independent wiring cavity, tighten M3 screw clockwise with flat screwdriver to lock wire tightly;
- For wire replacement, loosen screw counterclockwise and pull wire out directly without damaging PCB solder pads.
Why Choose Our KF300-5.0 & DG300-5.0 PCB Terminal Blocks?
We are professional manufacturer of PCB screw terminal blocks with integrated stamping, injection molding and electroplating workshops. Our KF300-5.0 DG300-5.0 wiring terminals adopt thicker copper conductive inserts and thicker tin anti-rust coating than generic low-cost market products, avoiding overheating under continuous full-load operation.
Precision mold forming produces smooth burr-free plastic shells with clear model marking for fast engineer model selection. We support custom housing color, printed LOGO and mixed-pole bulk packaging, and provide one-stop matching pluggable PCB terminals, DIN rail terminals and cold crimp wire connectors for full wiring accessory procurement.
Final Summary
KF300-5.0 and DG300-5.0 5.0mm pitch screw type PCB terminal blocks are interchangeable universal fixed barrier wire-to-board connectors for low-voltage electronic circuit boards. Featuring mutual compatibility without PCB redesign, reinforced anti-vibration screw clamping, UL94-V0 flame retardant safe insulation, compact space-saving layout and full customizable pole specifications, these cost-effective wiring terminals replace unstable manual soldering connections. Adopting KF300/DG300 series terminals optimizes electronics factory mass production efficiency, simplifies equipment maintenance and improves long-term circuit operation stability for power supplies, sensors, industrial controllers and household appliances.
Keywords: KF300-5.0 PCB Terminal Block, DG300-5.0 Screw Connector, 5.0mm Pitch Barrier Terminal Block, Fixed PCB Wiring Connector, Interchangeable KF/DG300 Terminal