Author Archives: li
Dry Circuit Resistance in Metal Dome Switches
Dry circuit resistance testing for metal dome switches: low-level limits, four-wire measurement, fixtures, failure diagnosis and acceptance criteria. Continue reading →
How Do You Design a Mixed-Size Dome Array?
Design a mixed-size dome array by matching dome geometry, PCB pads, spacing, adhesive pockets, vent paths, actuators, placement tolerances and tests. Continue reading →
How Do You Select an SMT Tactile Switch for PCB Assembly?
Select an SMT tactile switch by footprint, height, force, travel, rating, land pattern, reflow, sealing, tape-and-reel and reliability requirements. Continue reading →
How Should You Evaluate Rubber Keypad Manufacturers?
Compare rubber keypad manufacturers by supply scope, silicone molding, contacts, legends, tooling, testing, quality controls and project inputs. Continue reading →
Membrane Switch Repair: Diagnose, Fix or Replace
Membrane switch repair for dead, intermittent or stuck keys: test contacts and traces, isolate the fault, and decide whether to repair or replace. Continue reading →
Industrial Membrane Switch Design and Manufacturing Guide
Industrial membrane switch design guide covering stack-up, circuits, metal domes, adhesives, tails, manufacturing controls, testing and RFQ files. Continue reading →
Tactile Switch Contact Force: What It Means and How to Test It
Tactile switch contact force: distinguish operating force from electrical closure, test the assembled key, and specify repeatable conditions. Continue reading →
Loose Metal Domes vs Dome Array: Which Fits Your Assembly?
Loose metal domes vs dome array: compare placement, alignment, rework and installed cost, with a practical format-selection checklist. Continue reading →
Mixed-Force Dome Array: Design and Test Guide
Mixed-force dome array design: assign force by key position, check assembled-key feel, test prototypes and prepare a clear custom-array RFQ. Continue reading →
What Is Switch Tease? When a Tactile Click Happens Before Contact Closure
Switch tease in metal dome keypads: learn why a tactile click can precede electrical closure, how to locate Fc and tease distance, and what to test. Continue reading →