JASPER Blog
Technical insights on membrane switch design, material selection, manufacturing processes, and sourcing best practices — from engineers with 15+ years of industry experience.
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Use these topic paths when you need help with tooling review, materials, backlighting, waterproofing, circuit tails, quality control, or supplier selection.
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PCB Panelization for Assembly
Review PCB panelization for assembly with rail, fiducial, support and separation checks. Approve panel drawings around real line and fixture…
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Capacitive Sliders and Wheels in Custom Control Panels
Compare capacitive sliders, wheels and buttons for custom control panels. Define mapping, endpoints, wraparound, feedback and prototype acceptance tests.
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Polyester (PET) vs. Polycarbonate (PC) Graphic Overlays — Preventing Emboss Cracking and Chemical Delamination
Compare biaxially oriented Polyester (Autotex PET) and Polycarbonate (Lexan PC) for membrane switches. Prevent stress-cracking around embossed keys and chemical…
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Dead-Front Capacitive Touch Panels: Hidden-Until-Lit Icons
Specify a dead front capacitive touch panel with clear off/on acceptance criteria, aligned touch targets, and fixed-exposure sample reviews for…
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PCB Assembly Component Clearance
Review PCB assembly component clearance for placement, inspection, rework, connector mating, fixtures, and final integration with package and tooling evidence.
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Capacitive vs Inductive Touch for Metal-Front Controls
Compare capacitive coupling, metal-over-cap and inductive touch for metal-front controls. Define force, panel motion, wet-use tests and supplier responsibilities.
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How Capacitive Touch Buttons Work: From Sensor to Host
Follow a capacitive touch button from finger coupling to sensor readings, touch decisions, and host commands, with practical checks for…
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PCB Assembly DFM and DFA Checklist
Use this PCB assembly DFM checklist to review footprints, panel handling, soldering, inspection and rework, then close release-blocking issues with…
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Silicone Keypad Tails and Connectors: Define the Assembly Interface Before Tooling
Define silicone keypad tail, connector, pinout, routing, supply scope, and acceptance tests so the rubber, circuit, and OEM electronics mate…
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Custom vs Off-the-Shelf Silicone Keypads: An OEM Guide
Compare off-the-shelf and custom silicone keypads by fit, graphics, tooling, integration cost, revision control and prototype risk for OEM equipment.
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Silicone Keypad ESD Testing: Component and System Boundaries
Learn how to separate silicone keypad material behavior, circuit protection, and equipment-level ESD immunity, then define a test configuration OEM…
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Silicone Keypad Material Declarations and Traceability
Learn how to review silicone keypad RoHS and REACH declarations, material scope, document dates, lot traceability, change control, and OEM…
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