I. Core Product Positioning Upgrade
The G306A series, as a third-generation sealed microswitch, enhances the following characteristics based on existing technology:
Triple Protection System: Fully sealed structure (IP67) + gold-plated contacts with inert gas protection + wide temperature range material (LCP plastic shell, temperature resistance -40℃~120℃).
Ultra-long lifespan and quiet design: 200,000 electrical cycles; the sliding contact mechanism achieves operating noise <30dB (laboratory data), suitable for scenarios with high noise requirements (such as smart homes and new energy vehicle interiors).
Modular Customization Platform: Supports four-dimensional customization of contact type, terminal interface, mechanical structure, and built-in resistor, quickly responding to the personalized needs of automakers such as BYD.
II. Deepening of Key Technical Characteristics
Enhanced Sealing and Weather Resistance Design
Double Sealing Structure: The terminal area uses a silicone sealing ring + epoxy resin potting, achieving IP67 certification (IEC 60529 standard), capable of withstanding immersion in 1 meter of water for 30 minutes.
Salt spray resistance: Passes 96-hour salt spray test (ASTM B117 standard), with no corrosion on the contact surface, suitable for coastal or high-humidity areas.
Low-temperature start guarantee: At -40℃, the contact spring elasticity decay rate is <5%, ensuring reliable triggering in extremely cold regions.
Long stroke mechanical structure optimization
Dynamic contact pressure control: The dual-spring reset system combined with optimized lever ratio ensures that the operating force fluctuates by <5% within the speed range of 1~500mm/s, avoiding false triggering caused by high-speed impacts.
Vibration-resistant design: Passes MIL-STD-810G vibration test (55Hz, 1.5mm amplitude, continuous for 12 hours), with contact stability reaching 99.99%.
Improved electrical performance
Low contact resistance: Initial contact resistance ≤150mΩ (terminal type), resistance increase <10% after 100,000 life cycles, reducing signal transmission loss.
Built-in resistor precise matching: Supports 1Ω~20Ω resistors in series in COM-NC/NC-NO circuits (e.g., A001 solution), with a resistance accuracy of ±5%, meeting the current detection requirements of the charging port cover’s anti-pinch function.
III. Customized Selection Guide Extension
Terminal Interface Solution Supplement
Crimp Terminal (Type C): Suitable for high-frequency vibration scenarios (e.g., industrial robotic arms), fixed by ultrasonic welding, tensile strength > 50N.
RF Shielded Terminal (Type R): Built-in electromagnetic shielding layer, suitable for use near the wireless communication module of the charging port cover in new energy vehicles, reducing interference.
Contact Configuration Logic Optimization
Code D (Dual Normally Open Type): Added SPST-2NO type, suitable for scenarios requiring dual signal confirmation (e.g., charging gun lock + charging status feedback).
Code E (Hybrid Type): The COM terminal can be configured with NO+NC dual contacts to achieve dual logic linkage of “driving prohibited while charging” and “cover not closed warning”.
Customized Upgrades to Mechanical Structure
#05 Flexible Arm: Utilizes a silicone-coated metal arm with a 12mm stroke and linearly increasing operating force, suitable for scenarios requiring child safety locks to prevent accidental activation.
Φ3.5×6.0mm (Ultra-Impact Resistant): Passes the 10J impact test (IEC 60068-2-27 standard), suitable for charging port covers in off-road vehicles.
Magnetic Mounting Post (M-type): Supports quick installation and removal for easy after-sales maintenance.
Mounting Post Reinforcement:
Handle Selection Expansion:
IV. Supplementary Reliability Verification Data
Life Test Enhancement
Mechanical Life: After 500,000 cycles at 50 cycles/minute, operating force attenuation <8% (laboratory data).
Electrical Life: After 200,000 cycles of switching a 0.5A@125VDC load at 30 cycles/minute, contact resistance ≤200mΩ, suitable for high-power charging scenarios.
Environmental Adaptability Extension
Temperature Shock Test: 100 cycles at -40℃ to +85℃, no cracking or deformation of the contacts.
Chemical Corrosion Test: Exposure to a 5% NaCl + 5% H2SO4 mixed solution for 24 hours, no oxidation of the contact surface.
V. Typical Application Scenarios Refinement
New Energy Vehicles
Charging Port Cover Anti-Pinch Function: Employs a 03# extended arm handle + code E hybrid contact to detect resistance during cover closure (current threshold 0.1A), triggering reverse movement.
Battery Pack High-Voltage Interlock: Built-in 10Ω resistor (A003 solution), monitoring connection status through resistance changes to ensure high-voltage safety.
Industrial Automation
Explosion-Proof Environment Access Control: ATEX certified (II 3G Ex nA IIC T4 Gc), suitable for petrochemical areas.
AGV Cart Limit: 00# receiver handle + code D dual normally open contacts for precise position feedback.
Smart Home
Oven Door Switch: 250℃ high-temperature resistant sealing structure (custom-designed) to prevent heat conduction and false triggering.
Smart Toilet Seat Buffer: Flexible arm handle + Code B normally open contact for slow lid closure detection.
VI. Safety Performance Upgrades
Enhanced Voltage Resistance
The withstand voltage between each terminal and non-energized metal parts has been increased to AC1500V/1min (IEC 60664-1 standard).
Insulation Resistance Improvement
Insulation resistance >1000MΩ in humid environments (+85℃/95%RH) (DC 1000V test).
Fire Resistance
UL94 V-0 flame retardant certified; drippings from burning shell material are non-ignitable.
VII. Compatibility Summary with BYD Charging Port Cover Project
Functional Matching: Status monitoring, safety interlocking, and intelligent control requirements can be achieved through Code E hybrid contact + 03# extended arm handle.
Design requirements include: IP67 protection, 200,000 cycles, 1~3N trigger force (150gf≈1.47N), and a temperature range of -40℃ to 85℃.
Cost advantages: Compared to imported brands, the G306A series offers a 30% reduction in customized costs and provides a 2-year warranty.
Conclusion: Through technological upgrades and customized expansion, the G306A series microswitches can fully meet the high reliability and environmental adaptability requirements of BYD’s charging port cover project, and are recommended as the preferred solution.