Component Specifier: Switches/Relays/Encoders

SWITCHES TYPE/Model ...

March 15, 2004

3 min read

SWITCHES
TYPE/Model	Features	P & A	Source
TACTILE TL6100 series	Process sealed; mechanical life from 400,000 to 1 million cycles; force requirements range from 130 to 500 g; actuator heights range from 4.7 to 9.9 mm; initial contact resistance is 50 mO at 5 V dc	$0.274 each in 2500-unit lots; six weeks	E-Switch www.e-switch.com (763) 504-3525
SNAP ACTION D3V miniature seriesxx	Contact ratings include 0.1, 6, 11, 16, and 21 A; mechanical life of 1 million operations (minimum); internal or external levers; uses self-cleaning wiping contacts; solder or quick connect terminals	Ranges from $1.80 to $2.80 in single-unit quantities; about seven weeks	Omron Electronics LLC www.info.omron.com(847) 843-8081
BASIC SE and XE series	Package size 19.05 by 8.64 by 22.3 mm (SE) and 19.05 by 8.13 by 15.75 mm (XE); single pole, double throw (SPDT); load capacity is 5 A (SE) and 7 A (XE); corrosion-resistant aluminum housing; watertight seal per Symbol 3 to Mil-PRF-8805; choice of termination types	From $20 to $40 each (SE), $100 to $150 in 100-unit lots (XE); two to six weeks (SE) and mostly stock (XE)	Honeywell www.honeywell.com (800) 784-3011
LIMIT 914CE	Fluorocarbon diaphragm seal protects against oil, water, detergent, and cutting fluid for 5 million operations; SPDT; compact size of 53.34 by 15.24 by 40.64 mm; 5 A, up to 250 V ac	Starts at about $13 each; mostly stock	Honeywell www.honeywell.com (800) 784-3011
REED RI-80SMD	Ultraminiature surface-mount dry-reed switch; single pole, single throw (SPST); 5-mm maximum glass length; three different Gull or J-lead configurations; rated at 5 W; life expectancy is 100 million operations	Less than $0.45 each in volume; 10 to 12 weeks	Coto Technology www.cotorelay.com (401) 943-2686
RELAYS
TYPE/Model	Features	P & A	Source
SOLID STATE FTR-SL series	1-A, SIP-type ultra-slim relay; designed for pc-board mounting; measures 5 by 28 by 15 mm; internal varistor and snubber circuit; 2500-V dielectric strength	$5 in 10,000-unit lots; stock	Fujitsu Components America www.fcai.fujitsu.com (800) 380-0059
POWER AZ770 series	Subminiature relay rated 5 V at 250 V ac; available in SPST and SPDT configurations; UL, CUR, and VDE approvals; 100,000-cycle electrical life; 8-mm creepage distance yields 5000-V dielectric strength	Starts at $0.64 each in 1000-unit lots; stock	American Zettler Inc. www.azettler.com (949) 831-5000
RF GRF342	Ultraminiature broadband RF relay; dc to 3 GHz; magnetic latching; hermetically sealed; low internal circuit losses; 5- and 12-V coil voltages; double pole, double throw; surface mount	x$33.86 each in 500-unit lots; eight weeks	Teledyne Relays www.teledynerelays.com (800) 284-7007
ENCODERS
TYPE/Model	Features	P & A	Source
MAGNETIC RM miniature	10-, 11-, and 12-bit miniature magnetic rotary encoders; up to 4096-count positioning to over 9000 rpm with accuracy to 0.4°; component, modular, and packaged shaft-style models; -25°C to 125°C operating range	Starts at $30 to $180 each; stock	Renishaw Inc. www.renishaw.com (847) 286-9953
ABSOLUTE Snaptrak series	Absolute encoder/resolver sets; shaft-angle position sensors give BCD, binary, greycode, incremental, +5 V transistor-transistor logic, or 24-V logic outputs; dc series provides ±10 V dc, 0- to10-mA and 4- to 20-mA current-loop outputs; Nema 12 enclosure	Starts under $500 each; stock	Computer Conversions Corp. www.computerconversions.com (631) 261-3300