Application challenge
- Oscilloscopes need multiple timebase and gain ranges, often selected around sensitive amplifier feedback networks.
- Switch capacitance, leakage and package geometry can alter bandwidth and measurement accuracy.
- Large mechanical relays consume board area and may not meet high-cycle expectations.
Design approach
- Keep relay leads and feedback traces short, symmetric and shielded where necessary.
- Evaluate capacitance, insertion loss and isolation at the highest relevant signal frequency, not only at DC.
- Use grounded shields or guard pins if the selected package provides them.
- Verify range-to-range repeatability after mechanical cycling and temperature exposure.
Engineering caution: catalog ratings are component-level references. For high-voltage, medical, EV, PV or ATE systems, verify creepage, clearance, leakage, thermal rise, EMC and lifetime in the finished equipment.
Related MiRelay series
Miniature shielded reed relay designs are used for compact feedback-path switching; if an exact HVMR page is not published, use the closest miniature/SMD reed relay package and validate the RF behavior.
Series mentioned: HVMR miniature reed relays