Product Roundup: Electromechanical switches

Supporting the design of electrical systems in a variety of markets, the electromechanical switch comes in different types, such as keylock, pushbutton, DIP, reed, rocker, rotary, slide, snap action, tact, and toggle. The following is a sampling of recently introduced products.

The KM1202 through-hole subminiature detect switches from C&K Components (www.ck-components.com) feature a minimum electrical life of 10,000 actuations at full load. The switches are available with gold- or silver-plated contacts; maximum contact rating for the gold-plated switches is 0.4 A at 20 V ac or dc, while the silver-plated devices feature a contact rating of 0.25 A at 125 V ac or dc.

C&K’s KM1202

APEM Components (www.apem.com) offers the 12000X778 series professional-grade toggle switches that feature a double shell case for extra mechanical strength and electrical insulation. The contact mechanism is suitable for ultra-low-level applications of 10 mA at 50 mV and 10 mA at 5 Vdc minimum with an electrical life up to 150,000 cycles. The switches are also rated for power applications at 2 A at 250 Vac, 4 A at 125 Vac, or 4 A at 30 Vdc max, with an electrical life up to 20,000 cycles. The series also includes a front-panel sealing that meets IP67 specifications and a full epoxy-sealed base.

APEM’s 12000X778 series

The CL1200 Series bi-color LED pushbutton switch from CIT Relay & Switch (www.citswitch.com) offers through-hole, right-angle, and surface-mount terminal options with a choice of round and square cap styles, both of which are available with and without LED hole and complimentary optional frames. Specifications include an electrical rating of 50 mA at 48 Vdc, and electrical life of 100,000 cycles, a contact resistance of less than 50 mΩ initial, and a dielectric strength of 500 Vrms minimum with insulation resistance of greater than 100 MΩ minimum. In addition, actuation force is 160 ± 50 gf with actuator travel of 0.25 ± 0.1 mm and operating and storage temperature of –40° to 85°C.

CIT’s CL1200 Series

Electro-Mech Components (www.electromechcomp.com) offers the SW44687 potentiometer switch assembly with both rotary and push-on functionality for maximum operation control. The SPDT switch enables the user to specify a value so that, at the push of a button, the circuit or channel automatically opens at the preset level. The switch also features a 10-kΩ-resistance potentiometer module, is rated for 0.10 A at 30 Vdc, and has switch life of 100,000 minimum actuations.

For a quiet actuation, NKK Switches (www.nkkswitches.com) offers the HB2 series of subminiature pushbuttons with full-face illumination. The switches offer a mechanical and electrical life at 100,000 operations minimum. They come standard with either red/green or red/yellow bicolor built-in LEDs. The stroke has a total travel 1.8 mm, with a pretravel of 1.3 mm and an overtravel of 0.5 mm. The nominal operating force is 1.8 N. Rated at 0.4 VA maximum at 28 V ac/dc max, these switches also have contacts with gold plating and an operating temperature range of –13° through 122°F.

The LP15 series illuminated pushbutton switch from E-Switch (www.e-switch.com) features multiple LED colors (red, blue, green, yellow, and white), custom marking options for the caps, and several cap sizes. The switch offers a contact rating of 1 mA at 20 Vdc, an electrical life of 300,000 cycles, and a contact resistance of 200 Ω maximum at 5 Vdc and 1.5 mA. This SPST, normally open part provides a dielectric strength of 250 V ac for 1 min and an operating temperature of –20° to 70°C.

Cole Hersee (www.colehersee.com) offers the 95060 key switch series with integral sealed Deutsch connector. It is rated at 10 A at 12 V and 5A at 24 Vdc. Features include engineering thermoplastic construction, fully sealed contact area using O-rings and ultrasonic welding, and an anti-restart option. In addition it is tested to SAE J259 for ignition switches.

Narda’s SEM02012

Narda Microwave-East (www.nardamicrowave.com/east) offers the Model SEM02012 fail-safe SP2T RF switch suited for operation from dc to 18 GHz that features very low insertion loss and rugged construction. It operates from 12 Vdc at 275 mA, has maximum insertion loss of 0.5 dB, isolation of at least 60 dB, and VSWR of less than 1.5:1. It uses SMA female connectors, includes an integral indicator circuit, and measures 1.34 x 1.5 x 0.5 in.

Christina Nickolas