3.5 terminal block

• How to Improve Electrical Safety Using Proper Terminal Block

  Dec 15, 2025

  Using Proper Terminal Block is a crucial step in improving electrical performance, involving aspects such as connection reliability, signal integrity, and power transmission efficiency.  The following is a systematic guide to selection and application: I. Clearly Define Core Electrical Performance Indicators Contact Resistance: Low and stable contact resistance reduces heat generation and energy loss. Current Carrying Capacity: Terminals must withstand the rated current (considering instantaneous peak values). Voltage Drop and Temperature Rise: Excellent design minimizes voltage loss and heat accumulation. Insulation and Dielectric Strength: Prevents leakage and breakdown (especially in high-voltage environments). Signal Integrity: High-frequency signals require impedance matching and shielding to prevent interference.   Mechanical Stability: Resistance to vibration and loosening ensures reliable contact over the long term. II. Key Selection Factors for Terminals 1. Material Selection Conductor Material: High conductivity: Oxygen-free copper and copper alloys (such as brass and phosphor bronze) are the mainstream choices. High current/high temperature environments: Consider silver plating or aluminum material (for lightweight applications). Insulation Material: General purpose: PVC, nylon (low cost). High temperature/flame retardant: PTFE (Teflon), PEI, PPS. Plating Treatment: Anti-oxidation/improved conductivity: Silver plating (optimal conductivity), gold plating (corrosion resistance, suitable for high frequencies), tin plating (low cost, but beware of "tin whiskers").   Environmental adaptability: Salt spray environments require thick plating or gold/nickel composite plating. 2. Structural Design Crimping vs. Soldering: Crimping terminals: Requires specialized tools, offers high consistency, good vibration resistance, and is suitable for mass-produced wire harnesses. Soldering terminals: Manual operation is prone to cold solder joints; wave soldering/reflow soldering is recommended. Contact Surface Design: Wire spring structure (multi-contact): Redundant contact, excellent vibration resistance. Double helical spring structure: High retention force, used in high-vibration environments (such as aerospace). Locking Mechanism:   Snap-fit ​​and threaded locking (e.g., MIL-DTL-38999 military-grade connectors) prevent loosening.   3. Matching with the Cable Cross-sectional area matching: The terminal specifications must strictly correspond to the wire gauge (e.g., AWG standard). Crimping quality: Use professional crimping tools to avoid over-crimping (metal fracture) or under-crimping (insufficient tensile strength).   Insulation support: Terminals with insulation sleeves can prevent stress fractures.

  heiße Tags : 5.08mm terminal block 5.08 Klemmenblock 3.5mm terminal block 3.5 terminal block 3.81mm terminal block 3.81 terminal block

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