SMT Sealed Rocker Switch
ER-3
ES40-R Sealed Sub-miniature Rocker Switches
This rocker switch is surface mount with sideward terminal, single pole, horizontal actuation and right angle. Small footprint - saves space. Made by UL 94V-0 Nylon case and bushing. It is completely sealed to IP67 standards. Sealed structure can avoid any contaminant during soldering and cleaning process. This switch is perfect for Telecommunications, Computers and peripherals.
Features
- Sealed against solder and cleaning processes
- Circuit: SPDT
Specification
- Contact Rating: R- 0.4 VA max @ 20 V AC or DC
- Life Cycle: 30,000 make and break cycles at full load
- Contact Resistance: 20 mΩ max. initial @2-4 VDC, 100 mA
- Insulation Resistance: 1,000 MΩ min.
- Dielectric Strength: 1,500 V RMS @ sea level.
- Degree of Protection: IP67
- Operating Temperature: -30°C to 85°C
Materials
- CASE & BUSHING: Glass filled nylon PA6T G30, flame retardant heat stabilized (UL94V-0)
- ACTUATOR: Nylon, black standard. Internal o-ring seal standard with all actuator.
- CONTACT & TERMINAL: Copper alloy, gold plated
- SWITCH SUPPORT: Copper alloy, tin-plated
- TERMINAL SEAL: Epoxy

Product Drawings

Application
- Telecommunications
- Instrumentation
- Computers & peripherals
- Medical equipment
- Electronic appliance
- Youtube
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SMT Sealed Rocker Switch (backward)
ER-3-M/N
This rocker switch is surface mount with backward terminal, single pole, horizontal actuation...
Details - Files Download
How Can You Prevent Contamination During PCB Assembly in Medical Devices?
Our ER-3 SMT sealed rocker switch features IP67 protection and complete sealing against solder and cleaning processes, eliminating contamination risks in medical equipment manufacturing. With RoHS and lead-free compliance, ENEC certification, and 30,000-cycle reliability, it meets stringent medical device standards. Contact us to receive detailed specifications and samples for your next medical equipment project.
Engineered for precision and durability, the ER-3 provides exceptional electrical performance with contact ratings of 0.4 VA max at 20V AC or DC, 30,000 make-and-break cycles at full load, and contact resistance of just 20mΩ maximum initial. The terminal seal epoxy construction ensures long-term reliability in harsh environments, while the 1,500V RMS dielectric strength and 1,000MΩ minimum insulation resistance guarantee safe operation. RoHS compliant and lead-free, with ENEC certification, this sealed rocker switch meets the stringent quality standards required for instrumentation, electronic appliances, and medical equipment applications where contamination prevention and consistent performance are critical.






