ATCA Family of Switches

By C&K 301

ATCA Family of Switches

C&K has developed a variety of detect switches for use in Advanced Telecom Computing Architecture (ATCA) applications. Designated the MDS, SDS, and HDT series, the detect switches are implemented on the server blade as a safety mechanism to guarantee the blade is powered down, while ensuring no data is lost.

Switches in ATCA applications have traditionally been through-hole mounted, but these switches are surface-mount products providing customers with greater design flexibility. They meet the expanded temperature ranges and vibration requirements of ATCA applications in military and medical arenas.

While most ATCA applications are used in network and telecom servers, the detect switches are also being increasingly employed on advanced mezzanine cards (AMC) for improved data integrity in military, datacom, and medical applications, including black boxes and high-end ultrasound equipment.

HDT Series
  Features   Applications   Specifications
  • Low profile package
  • Design allows top or side actuation
  • Low actuation force: 35 g max.
  • Pick-and-place compatible
  • Halogen-free
  • Consumer electronics
  • Computers
  • Medical devices
  • ATCA and MicroTCA devices
  • Contact rating: 1 mA 5 VDC
  • Mechanical and electrical life: 100,000 cycles min.
  • Contact resistance: 500 mΩ max. initial
  • Insulation resistance: 100 MΩ min. between adjacent contacts
  • Operating temperature: -40°C to +85°C
  • Storage temperature: -40°C to +85°C
MDS Series
  Features   Applications   Specifications
  • Snap-acting tactile feel
  • Small package size
  • Available in vertical or right angle PCB mount
  • Long total travel of 2.9 mm
  • Medical devices
  • Consumer electronic devices
  • ATCA or MicroTCA devices
  • Detect the presence of a mechanical device
  • Contact rating: 0.3 A @ 6 VDC
  • Mechanical and electrical life: 10,000 operations
  • Contact resistance: 200 mΩ max.
  • Operating temperature: -25°C to +70°C
  • Solderability: According to lead free solder profiles
  • Operating force: 65 g max.
  • Release temperature: 3 g min.
SDS Series
  Features   Applications   Specifications
  • Low profile package sits just 2 mm off PCB
  • 2 mm over travel ideal for detector applications
  • Low actuation force (75 g max.)
  • Pick-and-place compatible
  • Detect presence of mechanical devices
  • PCB lock cam and smart card detect
  • ATCA and MicroTCA
  • Consumer electronic and medical devices
  • Contact rating: 100 mA @ 12 VDC
  • Mechanical and electrical life: 50,000 cycles
  • Contact resistance: 100 mΩ max. initial
  • Insulation resistance: 100 MΩ min. @ 100 VDC
  • Operating temperature: -40°C to +85°C
  • Solderability: IR compatible, no wash. 260°C max.