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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Feedback for Capacitive Touch: Light, Sound and Haptics
Plan capacitive touch feedback with clear event states, visual, audio and haptic options, host responsibilities, and practical timing and validation…
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PCB Pick-and-Place Files: Coordinates, Rotation and Side
Prepare a PCB assembly pick and place file with clear coordinates, origin, rotation, and board-side rules, plus a worked CPL…
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Gerber, BOM and CPL Consistency Checks
Check Gerber, BOM and CPL consistency before PCB assembly. Reconcile revisions, reference designators, DNP counts, footprints and board sides before…
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Silicone Keypad Matrix Design: Pin Count, Ghosting and Multi-Key Input
Plan silicone keypad matrix wiring, row/column pin count, ghosting risk, scan behavior and multi-key validation before PCB and connector release.
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3M Adhesive Selection for Membrane Switches & Overlays — Why 3M 467MP Peels on Plastics and When to Specify 3M 300LSE or 468MP
Why do graphic overlays and membrane switches peel at the corners? Learn how to match 3M 200MP (467MP/468MP) and 3M…
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Capacitive Touch Controls for Laboratory Instruments
Specify laboratory instrument touch panels for gloves, cleaning chemicals, centrifuge parameter confirmation and state feedback, with an OEM acceptance matrix.
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Preparing a PCB Assembly BOM
Prepare a PCB assembly BOM with complete MPNs, reference designators, per-board quantities, DNP rules, approved alternatives, and a copy-ready field…
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Second-Source PCB Assembly Qualification
Qualify a second PCBA source with a shared design baseline, controlled process differences, correlated tests and ongoing change approval across…
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Obsolete Silicone Keypad Replacement: An OEM Checklist
Replacing an obsolete silicone keypad? Use this OEM checklist to rebuild drawings, verify PCB and housing fit, prototype, and revalidate…
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Capacitive Keypads for Vending and Self-Service Equipment
Specify fixed capacitive keys for vending equipment with clear feedback, repeated-input rejection, cleaning rules, and maintenance acceptance checks.
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PCB Assembly Forecast Planning
Plan PCB assembly demand with clearer forecasts, product mix, material approvals, frozen windows, and test-capacity reviews before committing to production.
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Repeat PCB Assembly Order Checklist
Use this repeat PCB assembly order checklist to align board, BOM, firmware, test and tooling revisions, resolve deviations and confirm…
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