62787-2

FAQFrequently Asked Questions

• What wire gauges can I terminate with theTE Connectivity 62787-2 ring terminal, and how do I select the correct crimp tool? The 62787-2 ring terminal is designed for 14-18 AWG wire, accommodating an insulation diameter range of 0.090" to 0.145". When selecting a crimp tool, verify that your crimper is rated for this gauge range and configured for non-insulated ring terminals. Using an undersized or oversized crimp die will result in incomplete wire stranding compression or terminal deformation, leading to increased contact resistance and potential failure under load. Consult your crimper's documentation to confirm the tool matches the62787-2 specifications.
• Can I use the62787-2 ring terminal with insulated wire, or must I strip the insulation before crimping? The 62787-2 is a non-insulated terminal, meaning the ring itself has no insulation coating. You must strip the wire insulation before crimping to ensure proper metal-to-metal contact between the wire strands and the terminal barrel. The insulation diameter specification (0.090" to 0.145") refers to the bare wire diameter after stripping, not the overall cable diameter. Failing to strip the insulation will result in a high-resistance connection that may overheat or fail intermittently under load.
• What is the stud or screw size that the 62787-2 ring terminal accommodates, and how tight should I torque the fastener? The product specification does not list a stud or tab size because the 62787-2 is a free-hanging, in-line ring terminal without a pre-defined mount point. The inner diameter of the ring (approximately 0.687" outer width suggests a ring designed for standard fasteners) is the controlling dimension for stud compatibility. You must measure or verify the actual stud diameter of your application before ordering. Torque specifications depend on the stud material (steel, brass, stainless) and the fastener thread size; refer to your assembly drawings or mechanical specifications. Over-torquing can crush the terminal or elongate the ring hole, while under-torquing risks loosening during vibration.
• Is the 62787-2 suitable for high-vibration automotive or industrial environments, and what are the reliability considerations? The 62787-2 is a non-insulated brass ring terminal with tin finish, suitable for general industrial and automotive wiring. In high-vibration environments, fretting corosion can develop at the contact interface between the terminal ring and the stud fastener. The tin finish provides baseline corrosion resistance, but repeated micro-motion under vibration may degrade the contact over time. For critical high-vibration applications, consider adding a lock washer or applying thread-locking compound beneath the terminal to minimize movement. Periodic inspection for discoloration or increased resistance is recommended in harsh environments. The terminal's RoHS compliance and MSL Level 1 rating indicate unrestricted moisture exposure tolerance, making it suitable for outdoor or humid industrial use.
• What is the contact resistance of the 62787-2 when properly crimped, and how does it compare to insulated ring terminals? The 62787-2 datasheet does not specify DC contact resistance. However, as a non-insulated brass terminal with tin plating, the contact resistance depends on crimp quality, fastener cleanliness, and the clamping force of the mounting stud. A properly crimped joint typically exhibits1–5 mΩ resistance for 14-18 AWG connections, but this varies by tool and technique. Insulated ring terminals (such as TE's 62787-1equivalent) use the same contact material but ad a nylon insulation sleeve; the underlying electrical performance is identical once crimped. The advantage of insulated terminals is visual ease-of-assembly and reduced risk of accidental shorts; the non-insulated 62787-2 offers lower cost and a lower profile on crowded terminal blocks.
• Can the 62787-2 replace an older or equivalent ring terminal from another manufacturer, such as Phoenix Contact or Molex alternatives? The 62787-2 can replace other non-insulated brass ring terminals in the 14-18 AWG class if the replacement terminal has the same wire gauge range and similar outer ring diameter. However, compatibility depends on the specific stud size and fastening method in your application. If are migrating from a Phoenix Contact PTFIX or Molex Crimp-On Ring Terminal, verify that the inner ring diameter matches your stud or tab size before proceding. TE's 62787 series uses industry-standard ring dimensions, but proprietary variants may differ. Additionally, confirm that the replacement terminal's crimp barrel length and profile are compatible with your existing crimping tool; mixing terminals from different manufacturers can damage the crimp tool or produce poor connections. Always conduct a sample crimp trial and electrical verification before full production migration.
• What is the temperature range for the 62787-2, and are there any limitations when used in high-temperature or cryogenic applications? The 62787-2 datasheet does not explicitly state an operating temperature range. As a brass terminal with tin finish and non-insulated construction, it is suitable for typical industrial environments (−40°C to +85°C). In high-temperature applications (above 100°C), the tin plating may undergo tin whisker growth or reflow, potentially increasing contact resistance. For sustained temperatures above 125°C, consider using nickel-plated or copper-beryllium terminals specifically rated for high-temperature service. In cryogenic or very low-temperature environments, brass remains stable, but ensure that any insulation or sealant used in the assembly does not become britle. If your application requires operation outside the typical industrial range, consult with TE Applications Engineering or test a sample terminal under your specific thermal conditions.
• Does the 62787-2 meet RoHS and REACH compliance for automotive or medical device applications? The 62787-2 is RoHS Compliant (meets EU2011/65/EU), meaning it contains no lead, cadmium, mercury, or other restricted substances above thresholds. The REACH Status is listed as Vendor Undefined, which means TE has not publicly disclosed full SVHC (Substances of Very High Concern) information for this specific part number. For medical device applications, you must verify compliance with IEC 601 biocompatibility and material requirements directly with TE; a RoHS-compliant part does not automatically qualify for medical use. For automotive applications destined for EU or North American markets, the RoHS compliance is sufficient for most OEM tier requirements, but confirm against your specific program's material specifications. Request a formal Material Compliance Statement or IMDS (International Material Data System) record from TE if needed for tier-one automotive supplier qualification.
• How do I prevent corosion or oxidation of the 62787-2 terminal when exposed to salt spray, humidity, or chemical environments? The 62787-2 features a tin finish on brass, which provides moderate corrosion resistance suitable for industrial and automotive environments. In salt-spray or marine applications, tin plating can develop white corrosion (tin oxide) over extended exposure. To mitigate corosion, apply a thin dielectric grease or silicone conformal coating around the crimped connection to exclude moisture. Ensure the stud fastener and the terminal are of compatible materials (both stainless steel or both galvanized) to avoid galvanic corrosion at the contact interface. In highly corosive environments, consider upgrading to nickel-plated or gold-plated ring terminals, which offer superior corrosion resistance at higher cost. Periodic inspection and cleaning of the contact area, especially in outdoor installations, extends service life.
• What is the correct crimping technique for the 62787-2 to ensure a reliable connection, and what are common crimping failures? The 62787-2 requires a hexagonal or specialized crimp tool rated for non-insulated ring terminals in the 14-18 AWG class. Strip 0.25" to 0.375" of insulation from the wire and fully insert the bare conductor into the terminal's crimp barrel. Apply steady, full pressure to the crimper handle until it automatically releases, creating a hexagonal indent that secures the strands. Common failures include: (1) incomplete wire insertion, leaving exposed insulation inside the barrel; (2) insufficient crimp pressure, leaving strands loosely compressed; (3) over-crimping on undersized wire, crushing the terminal; and (4) using an automotive-style ratchet crimper not calibrated for this terminal size. After crimping, visually inspect the indent pattern for symmetry and gently tug the wire to confirm it does not pull free. Always test the first sample connection with a micro-ohm meter to validate the process before production.
• Is the 62787-2 suitable for signal-level or low-power applications, or is it designed only for power distribution? The 62787-2 is a general-purpose ring terminal suitable for both power and signal applications. Its brass construction and tin finish provide adequate contact reliability for signal circuits with current levels below 20 A. For high-current power applications (above 50 A), verify that the connection layout and fastening method can support the thermal load without exceeding temperature limits. In sensitive analog or RF signal circuits, the terminal's contact resistance variability (due to crimping consistency) may introduce noise or impedance mismatch; consider using dedicated low-contact-resistance connectors if signal integrity is critical. The non-insulated design means the terminal is exposed to the environment, so in noisy industrial settings, ensure proper shielding or routing of adjacent signal lines to prevent EMI coupling.
• Can I reuse or recrimp the 62787-2 terminal if I remove it from a wire, or must I discard it and use a fresh terminal? The 62787-2 terminal is intended for single-use crimp application only. Once crimped, the terminal barrel is permanently deformed, and the brass material work-hardens. Attempting to recrimp the same terminal on a new wire will produce an unreliable, weak connection because the barrel cannot re-form properly. The risk of intermittent open circuits or high-resistance faults increases significantly with reuse. If a terminal must be removed, discard it and use a fresh 62787-2 terminal for reassembly. In high-reliability applications (aerospace, medical), crimp terminals are typically marked as non-reusable per IPC-A-620 standards, and rework procedures explicitly require replacement terminals.
• What are the key differences between the 62787-2 (non-insulated) and the 62787-1 or other insulated variants in the TE 62787 series? The TE 62787 series includes both non-insulated (62787-2) and insulated (such as 62787-1) ring terminal variants for 14-18 AWG wire. The non-insulated 62787-2 has a bare brass ring with tin plating and a lower profile, making it suitable for space-constrained applications or terminal blocks with minimal clearance. Insulated variants ad a nylon sleeve around the ring, providing visual color-coding capability (commonly red, blue, or yellow by gauge) and protection against accidental shorts when multiple terminals are mounted in proximity. Electrically, both variants perform identically once crimped. The insulated version costs slightly more and may not fit in tight terminal block layouts. Choose the62787-2 if cost and space are priorities; choose insulated variants for safety-critical applications or when color-coding is required for wiring documentation.
• How do I calculate the correct wire gauge for a circuit if I need to replace a failed connection using the 62787-2? The 62787-2 accommodates 14-18 AWG wire. To select the correct gauge for your circuit, calculate the required current capacity using Ohm's Law (I = V/R) and then consult the American Wire Gauge (AWG) ampacity table (per NEC or IEC 60228). For example, if your circuit draws 15 A at 12 VDC, 14 AWG copper wire provides adequate capacity for short runs (up to 15 feet) with acceptable voltage drop. Thicker wire (12 AWG or 10 AWG) is needed for longer runs or higher currents. The 62787-2 is limited to the 14-18 AWG range; if your application requires 10 AWG or thicker wire, you must select a larger ring terminal fromTE's catalog (such as the 62785 or 62786 series). Never downsize wire gauge below the calculated requirement to force compatibility with the 62787-2, as this creates fire hazard and voids equipment safety approvals.
• What packaging format is the 62787-2 available in, and how many terminals are supplied per reel or tube? The 62787-2 is supplied in Tape & Reel (TR) packaging, which is the standard format for high-volume manufacturing and automated assembly lines. The quantity per reel varies by distributor and purchase volume; typical standard rels contain 5,000 or 10,000 units. If you require smaller quantities (100–500 units), many distributors offer bulk bags or partial-reel purchases at slight premium cost. For prototype or low-volume builds, consider purchasing from a local electronics distributor or buying a full reel and storing excess terminals for future use, as the terminal cost per unit is very low. Always verify the reel quantity and packaging format with your supplier before ordering to ensure alignment with your assembly capacity and inventory management.
• Are there any specific safety or handling precautions I should follow when working with the 62787-2ring terminal in a manufacturing environment? The 62787-2 is a passive brass component with no known health hazards under normal handling. However, observe standard electronics assembly practices: (1) Ensure your crimping tool is properly grounded to prevent electrostatic discharge (ESD) damage to nearby sensitive components, even though the terminal itself is not ESD-sensitive. (2) Maintain a clean, dry work area to prevent corosion of the brass surface before assembly. (3) Use sharp wire strippers to avoid wire damage, which can reduce stranding and increase connection resistance. (4) Be cautious when handling small terminals to avoid ingestion or choking hazards in multi-person work areas. (5) If applying conformal coatings or sealants around the terminal for corosion protection, follow the coating manufacturer's safety guidance regarding ventilation and material handling. No special disposal requirements apply; the 62787-2 can be recycled as scrap brass through standard industrial recycling channels.