RJ45 Modular Plug Selection Guide for OEM Brands
When sourcing RJ45 modular plugs at the OEM level, the challenge goes beyond finding a connector that works. For brand owners and distributors, the real concern is ensuring compatibility, compliance, and SKU efficiency across global markets. Choosing the right connector from the start reduces risks, improves supply chain performance, and safeguards brand reputation.
Why Choosing the Right RJ45 Modular Plug Matters
Selecting the wrong modular plug is not just a technical inconvenience—it can have significant commercial consequences.
- Signal loss or unstable connection → Increases customer complaints and returns.
- Difficult installation → Raises project labor costs and delays deployment.
- Shortened cable lifespan → Leads to warranty claims and higher support expenses.
- Incompatibility between STP/UTP or cable diameters → Forces re-termination and wasted inventory.
For OEM brands, each of these issues translates into higher operational costs, reduced customer trust, and brand reputation risks. Choosing the right RJ45 modular plug from the start ensures both technical performance and business efficiency.
Key Factors in Selecting RJ45 Modular Plugs
When selecting the right RJ45 modular plug for OEM projects, three factors are critical to ensure long-term reliability and compatibility.
1.Check the Cable Insulation Diameter and Jacket Size for RJ45 Connector
Conductor Insulation Diameter: When selecting an RJ45 connector, the conductor insulation diameter is the first measurement to check. It refers to the diameter of the insulated layer surrounding each conductor. To ensure a proper fit, always add a +0.1 mm tolerance when choosing the wire hole size. For example, if the conductor insulation diameter is 0.9~0.95mm, the recommended RJ45 connector hole size should be within 1.0–1.05 mm. If this tolerance is not applied, he insulation may not be held firmly, leading to poor contact or even network disconnection.
Cable Jacket Diameter: The cable jacket must also match the plug housing propertly. During assembly, all four twisted pairs must be fully inserted into the connector to achieve a reliable termination. If the height of the cable entry of the plug is insufficient, the crimping process will place excessive stress on the wires, which can damage the twisted pairs and significantly reduce Ethernet performance.
CRXCONEC provides a wide range of RJ45 modular plugs designed to fit different cable specifications, making your brand's product line more complete to support all projects.
2.Match RJ45 Modular Plugs type – STP vs UTP
When selecting the right RJ45 connector for your Ethernet cable, it's important to make sure the plug matches both the cable gauge and the shielding type. Different cable constructions are designed to pair with specific modular plugs, and using the wrong combination can result in poor performance or connection issues. For shielded cables such as S/FTP, U/FTP, F/UTP, and SF/UTP, always use an STP RJ45 modular plug. This properly terminates the shielding layer, maintains strong EMI protection.
For unshielded cables (UTP), a UTP RJ45 connector is the ideal choice. It delivers reliable, cost-efficient performance without unnecessary shielding components.
👉See More UTP RJ45 connector CLICK HERE!
Tips: If you're not sure which connector type to choose, remember this rule of thumb: shielded cable requires a shielded (STP) plug, and unshielded cable requires an unshielded (UTP) plug.
3. Consider Installation requirements for Tooless RJ45 Modular Plugs
To support different project environments demand, you will need to provide different plug designs.
- Tight Spaces → Angled Toolless RJ45 connector for high-density racks and narrow space installation.
- 4PPoE/ PoE++ (IEEE 802.3bt) →supporting up to 90–100W for Wi-Fi APs, IP cameras, and LED lighting.
- Quick Field Installs → RJ45 connector toolless and field termination plug options for on-site assembly
- Large Cable OD Solution→ Cat6A/Cat7 shielded RJ45 plugs or Field Termination Plug to support it fat cable outer diameter.
Find Angled Toolless Plug click here
Find 4PPoE Toolless Plug click here
Find 4PPoE Toolless Plug click here
OEM Customization for your production line: CRXCONEC helps brand owners consolidate SKUs by offering versatile modular plugs that cover multiple application scenarios—reducing inventory complexity.
RJ45 Connector Testing & Compliance – Guarantee Quality for OEM Demand
At CRXCONEC, we provide a full range of RJ45 connector solutions for different cabling needs, and every RJ45 connector we deliver undergoes strict in-house testing to ensure consistency across all batches.
- Comply with ISO/IEC 11801-1 & ANSI/TIA-568.2-D
- Follow IEC 60603-7 series for RJ45 8-Way Connector
- Comply with requirements of ANSI/TIA-1096-A (FCC Part 68)
- Comply with UL 1863
- Suitable for 4PPoE (IEEE802.3bt / IEC60512-99-002)
Applications Physical Characteristics
- Insertion Life: 750 mating cycles
- Tensile Strength Test ≥ 20 lbs (9.1kg) pull force.
- Installation Temperature : 0~50℃
- Operation & Storage Temperature : -20~60℃
- Salt Spray Test : Corrosion resistance with 50µ” gold plating pass 48 hours testing.
CRXCONEC – Your OEM Branding Partner for RJ45 Modular Plugs
Choosing the right RJ45 modular plug is not only a technical decision—it’s a brand strategy.
With CRXCONEC, you gain:
- Full Product Ecosystem → RJ45 connectors, keystone jacks, patch panels, fiber solutions.
- OEM Services → Logo printing, branded packaging, customized labeling.
- Compliance Support → UL, ETL, CE, RoHS, REACH for global market entry.
- Supply Chain Efficiency → Full product range with ready stock, so you can order anytime without keeping large inventory.
Let’s build your brand stronger – Contact CRXCONEC today to explore OEM-ready RJ45 modular plug solutions that match your business needs.
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