FAQ

The terminal (contact pin) design inside an RJ45 plug is critical to ensuring stable signal transmission, secure wire contact, and long-term performance.

Structure: Two side prongs that press against the conductor from both sides.

Advantages:

• Lower cost and simpler structure
• Two prongs angled adequate for solid conductor cables, however, straight pin is used for only stranded cables.

Disadvantages:

• Weaker contact with stranded wires
• Less durable under frequent insertions
• May cause signal loss or instability over time
  　

Structure: One center prong with two side arms, providing three-point contact.

Advantages:

• Compatible with both solid and stranded wires
• Stronger and more stable connection
• Reduced insertion loss; ideal for high-speed and PoE applications
• Higher resistance to loosening and oxidation over time

Disadvantages:

• Slightly higher production cost
• Requires more precision in manufacturing

For modern applications such as Cat.6A, or Power over Ethernet (PoE++), 3-prong terminals are the preferred choice due to:
 

• Larger contact area for better conductivity
• More reliable connection, especially under repeated use
• Greater compatibility across different wire types

At Plug Master, we prioritize reliability and performance. Our RJ45 plugs with 3-prong terminals are designed to deliver consistent signal integrity and durability — a key differentiator for high-end OEM clients.

Selecting the proper RJ45 plug requires matching both the individual wire insulation O.D. and the cable's overall jacket O.D.:

• Insulation O.D.: Standard plugs fit 0.95–1.05mm. Thick Cat.6A/Cat.8 cables (1.20–1.60mm) require specialized plugs with staggered channels or load bars for proper IDC contact.
• Cable Overall O.D.: The plug housing and boot must match the outer jacket diameter (4.0–8.5mm) to secure strain relief.

Mismatched insulation leads to pin misalignment, while an incorrect overall O.D. prevents full insertion or proper strain relief and guarantees ANSI/TIA-568.2-D and ISO/IEC 11801 electrical compliance.

Standard 2-prong pins only work for stranded cables by piercing soft wires. For solid conductors, a 3-prong pin is required. It straddles the solid core with a 3-point mechanical clamp from both sides. This dual-side lock increases contact area and prevents wire dislodgement caused by vibration or thermal expansion—fully compliant with IEC 60603-7 and ANSI/TIA-568.2-D standards for long-term low contact resistance.

All raw materials used in our manufacturing process—including polycarbonate housings, phosphor bronze contacts, and PVC boots—comply with EU RoHS 2.0 (10 restricted substances), REACH SVHC candidate lists, and California Proposition 65. Full compliance documentation, including official RoHS/REACH compliance declarations and Conflict Minerals Reporting Templates (CMRT), is supplied with every shipment for seamless European and North American customs clearance

We enforce rigorous quality control under ISO 9001:2015, combining automated machine CCD vision inspection, automated shield housing checks, and IPQC manual patrols, followed by 100% final packaging inspections on export orders. (Fluke testing is reserved for R&D cable compatibility validation). For crimping tools, we execute 100% full inspection: testing crimps on various plug O.D. sizes, verifying crimp height against FCC specifications, and inspecting blade trimming function and surface defects.

Having handled hundreds of global OEM projects, we know what works for overseas buyers. Send us your cable specifications, and we’ll immediately pair you with the exact Plug + Boot + Tool bundle that fits your market—down to custom polybags, blister packs, or color boxes. If a standard fit isn't available, we don't make you wait 28 days like typical factories. We adjust the tooling and ship custom, low-volume free samples to your door in under 14 days for real-world testing.

We show our delivery speed with results, hitting a 98.5% on-time delivery rate on all overseas orders. Standard, non-customized products ship within 10 to 14 days. To protect clients from global component shortages, we keep a rolling 3-month buffer stock of critical raw materials (terminals, polycarbonate, and copper shell) through long-term supplier contracts. For urgent production shifts, our technicians switch production setups and reassign assembly lines in under 24 hours, guaranteeing no costly delays for your orders.