CE Certified PET Membrane Switch Factories & Supplier

Membrane switches as passive components fall under the European EMC Directive 2014/30/EU (when integrating SMD LEDs, resistors, or active shielding) and the Low Voltage Directive (LVD 2014/35/EU) for circuits above 50V AC / 75V DC. Additionally, full conformity mandates RoHS 3 Directive (EU 2015/863) restricting 10 hazardous substances (lead, cadmium, mercury, phthalates) and REACH Regulation (EC 1907/2006). AXRU supplies official Certificates of Conformity (CoC) and third-party laboratory test reports (SGS/TUV/Intertek) verifying compliance for your CE technical documentation file.

Polycarbonate (Lexan) provides high impact strength and ease of forming, but exhibits poor chemical resistance and fractures rapidly when subjected to repetitive switch actuation (fatigue failure typically occurs under 200,000 cycles). Biaxially oriented polyester (PET) offers exceptional flexural endurance exceeding 5,000,000 actuations without work-hardening or cracking. Furthermore, PET resists harsh industrial chemicals, medical disinfectants (isopropyl alcohol, bleach, enzymatic cleaners), and maintains tactile actuation snap when embossed over metal snap domes.

Silver migration is an electrochemical process where silver conductive traces dissolve under DC voltage bias and moisture, growing microscopic dendritic filaments that cause short-circuits. We mitigate this through three engineered safeguards: 1) applying an impermeable high-grade carbon-graphite overprint across all contact pads and active traces; 2) double-coating non-contact traces with UV-curable, pinhole-free dielectric masks; and 3) utilizing perimeter IP67 adhesive seals (3M 300LSE) to prevent airborne moisture and condensation from infiltrating the circuit chamber.

Our standard prototype and engineering verification sample turnaround is 3 to 5 business days from 2D/3D drawing sign-off and color match approval (Pantone / RAL). Mass production runs typically ship within 10 to 14 business days. To support both agile hardware startups and Tier-1 OEM service replacement lines, our minimum order quantity starts from just 100 pieces, scaling efficiently to hundreds of thousands of units per month via our high-speed roll-to-roll and semi-automatic flatbed lines.

We accept vector graphic layouts in Adobe Illustrator (.AI), CorelDraw (.CDR), or Vector PDF with outlined fonts and explicit Pantone / RAL color designations. For mechanical outlines, hole locations, tail exit routing, and dome coordinates, we require 2D AutoCAD (.DXF, .DWG) or 3D STEP/IGES models for overall enclosure fitment. If you are replacing an obsolete or legacy component, our engineering team can reverse-engineer sample units provided to our Dongguan testing laboratory.

Tactile feel is governed by the snap ratio between peak actuation force (F1) and contact force (F2). We utilize precision computerized force-displacement testers to plot force-travel curves for every prototype batch, establishing a strict acceptance band (e.g., 280g ± 30g). During volume runs, automated optical inspection (AOI) verifies dome placement accuracy within ±0.05mm, while high-grade stainless steel domes sourced from certified metallurgical suppliers prevent dome fatigue or tactile degradation over millions of cycles.