EL4.5mm Wire-to-Board PCB Connectors – 4.5mm Pitch Locking Housings
EL4.5mm Wire-to-Board PCB Connectors – 4.5mm Pitch Industrial Locking Connector System
Yoeruyo's EL4.5mm connector range provides robust wire-to-board interconnection at the 4.5mm pitch for industrial control equipment, power electronics, home appliances, and HVAC systems. The 4.5mm pitch EL series features a positive-latch locking housing, through-hole PCB headers in vertical and right-angle orientations, and precision crimp terminals — delivering secure, vibration-resistant connections suitable for medium-current power and signal circuits in demanding environments.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Pitch | 4.5mm |
| Circuit Count | 2 to 12 circuits (single row) |
| Wire Range | 0.5mm² – 2.5mm² (AWG 20–14) |
| Rated Voltage | 250V AC/DC |
| Rated Current | 10A per contact |
| Contact Material | Copper alloy, tin plated |
| Housing Material | PA66 (Nylon 66), UL94 V-0, natural or black |
| Operating Temperature | -25°C to +105°C |
| Locking | Positive latch with audible click |
| Mating Cycles | ≥30 cycles |
| Compliance | RoHS, REACH |
Product Components
- Wire-side housing (plug) – single-row locking receptacle housing accepting EL4.5mm crimp terminals; 2 to 12 circuits
- PCB header – vertical (through-hole) – straight PCB-mount header for wave or hand soldering
- PCB header – right-angle (through-hole) – 90° orientation for edge-mount and space-constrained PCB layouts
- Crimp terminals (female) – stamped copper alloy terminals for crimping onto AWG 14–20 wire
- Pre-crimped wire assemblies – custom wire-to-board assemblies for OEM integration, available in specified lengths and circuit counts
Application Scenarios
- Industrial control & automation – PLC I/O module wiring, relay board connections, and sensor interface wiring in industrial control panels
- Power supplies & converters – AC input and DC output connections in switching power supplies and industrial DC-DC converters
- Home appliances & HVAC – control board wiring in air conditioners, washing machines, water heaters, and heating/cooling systems
- Motor drives & inverters – control signal and auxiliary power connections in variable frequency drives and servo amplifiers
- LED drivers & lighting control – power input and dimming signal connections in commercial LED driver modules
- OEM equipment manufacturing – production-line wire-to-board integration for equipment manufacturers requiring medium-current locking connectors
Why Choose Yoeruyo EL4.5mm Connectors
- ✅ 10A per contact rating – suitable for medium-current power and control circuits in industrial and appliance applications
- ✅ Positive-latch retention – audible click confirmation prevents accidental disconnection in vibration-prone industrial environments
- ✅ Wide wire gauge range – accepts AWG 20–14 (0.5–2.5mm²) for signal to medium-power circuit applications
- ✅ Bulk & OEM supply – flexible MOQ and tiered pricing for equipment manufacturers, panel builders, and electrical distributors
- ✅ RoHS & REACH compliant – halogen-free materials meet EU and global environmental standards
Buying Guide – Selecting the Right EL4.5mm Component
- Circuit count – select the number of circuits to match your wiring requirements; available from 2 to 12 positions
- Wire gauge – confirm the crimp terminal's wire range (AWG 20–14 / 0.5–2.5mm²) matches your cable specification
- PCB header orientation – vertical for standard wire-to-board connections; right-angle for edge-mount and space-constrained PCB layouts
- Current rating – EL4.5mm is rated at 10A per contact; confirm total circuit load does not exceed this rating
- Pre-crimped assemblies – for OEM integration, pre-crimped wire assemblies reduce assembly time and ensure consistent crimp quality
Frequently Asked Questions
What is the current rating of EL4.5mm connectors?
EL4.5mm connectors are rated at 10A per contact at 250V AC/DC. For multi-circuit power applications, ensure the total current load per contact does not exceed this rating, and derate appropriately for elevated ambient temperatures.
What wire gauge is supported?
EL4.5mm crimp terminals accept wire from AWG 20 to AWG 14 (0.5mm² to 2.5mm²). Match the terminal crimp barrel to your wire gauge for a reliable, low-resistance connection.
How does EL4.5mm compare to CH3.96mm and CH5.08mm?
EL4.5mm (4.5mm pitch, 10A) sits between CH3.96mm (3.96mm pitch, 7A) and CH5.08mm (5.08mm pitch, 10A) in terms of pitch, but matches CH5.08mm in current rating. Choose EL4.5mm when your PCB layout requires the 4.5mm pitch spacing or when replacing existing EL series connectors.
Do you offer pre-crimped wire assemblies?
Yes. Custom wire-to-board assemblies with pre-crimped EL4.5mm terminals are available in specified wire lengths, gauges, and circuit counts. Contact us for OEM assembly quotations and lead times.
Do you offer bulk pricing for equipment manufacturers?
Yes. Yoeruyo offers tiered pricing for orders of 500 units or more. Contact us for volume quotations, mixed-SKU orders, and OEM packaging options for production line integration.