LIBERTY (STAR-FOUR) TACTILE DOMES

      SF   DOMES

PART NUMBER*                DIAMETER (D)                 FREE HEIGHT (H)**                                      (in) +/- .005”    (mm) +/- 0.1        (in) +/- .004”    (mm) +/- 0.1

SF200XXX…………….....  .236”  …………  6.0…………....   .022”............  0.600

SF300XXX……………….    .330”  ………… 8.4……………   .025” ...........   0.635

SF400XXX……………….    .393”  …………10.0 ..............    .026" ...........  0.660

SF500XXX……………….    .480”  …………12.2 ………….    .027” ...........   0.686


*   WHERE  XXX = TRIP FORCE IN GRAMS 
** DIMPLES AVAILABLE UPON REQUEST
*** N = Nickle plated, S = Silver plated, and G = Gold plated 

MECHANICAL SPECIFICATIONS

 

DOME MATERIAL ………………    STAINLESS STEEL

TRIP FORCE …………………STANDARD =280, 340, 0R 450 grams; tolerance = + 40 gms
                                           CUSTOM / HIGH VOLUME = TO YOUR SPEC
                                           TOLERANCE / HIGH VOLUME = TO YOUR SPEC

PLATING …………………………..   NICKEL, SILVER, OR GOLD

OPERATING TEMPERATURE ..      -45 DEGREES C TO + 100 DEGREES C 

STORAGE TEMPERATURE…….    -55 DEGREES C TO + 100 DEGREES C 

HUMIDITY………………………..    0% TO 95% (NON-CONDENSING)

ACTUATION LIFE………………      UP TO 5,000,000 CYCLES

                                                   

 

ELECTRICAL SPECIFICATIONS

 
CONTACT CONFIGURATION …...................     SPST, NORMALLY OPEN

SWITCHING CURRENT…………………………..   0.005 TO 100ma dc

SWITCHING VOLTAGE …………………………    0.1 TO 50 VDC 

SWITCHING CAPACITY……………………......    1 WATT

CONTACT BOUNCE ……………..     MAKE = <0.3 ms TYPICAL;  BREAK = < 6 ms

FOR LOWER RESISTANCE OPTIONAL PLATING SHOULD BE CONSIDERED FOR BOTH DOME AND PRINTED CIRCUIT  BOARD

LIBERTY TECHNOLOGIES                                                                                        5922 McINTYRE STREET                                                                                  GOLDEN,  COLORADO  80403                                                                                  TEL: 303-408-3805