LTUC-455 Datasheet, PDF (5/7 Pages) Shoulder Electronics Limited. – TEMPERATURE COEFFICIENT OF CENTER FREQUENCY SHALL BE DEFINED AS THE AVERAGE OF THE CENTRAL FREQUECY.

PRIOR TO THE MEASUREMENT. IT SHALL FULFILL THE
SPECIFICATIONS IN TABLE 1.
6-2 MOISTURE
KEEP THE FILTER AT 40℃ AND 95% RH FOR 96 HOURS.THEN
RELEASE THE FILTER INTO THE ROOM CONDITIONS FOR 1 TO
2 HOURS PRIOR TO THE MEASUREMENT. IT SHALL FULFILL THE
SPECIFICATIONS IN TABLE 1.
6-3 LOW TEMPERATURE EXPOSURE
SUBJECT THE FILTER TO -20℃ FOR 96 HOURS. THEN RELEASE THE
FILTER INTO THE ROOM CONDITIONS FOR 1 TO 2 HOURS PRIOR TO
THE MEASUREMENT. IT SHALL FULFILL THE SPECIFICATIONS IN
TABLE 1.
6-4 TEMPERATURE CYCLING
SUBJECT THE FILTER TO A LOW TEMPERATURE OF -55℃ FOR 30
MINUTES. FOLLOWSING BY A HIGH TEMPERATURE OF +85℃ FOR 30
MINUTES. THEN RELEASE THE FILTER INTO THE ROOM CONDITIONS
FOR 1 TO 2 HOURS PRIOR TO THE MESUREMENT. IT SHALL MEET THE
SPECIFICATIONS IN TABLE 1.
6-5 RESISTANCE TO SOLDER HEAT
DIP THE FILTER TERMINALS NO CLOSER THAN 1.5mm INTO THE
SOLDER BATH AT 270℃ ±10℃ FOR 10±1 SEC. THEN RELEASE THE
FILTER INTO THE ROOM CONDITIONS FOR 1 TO 2 HOURS. THE
FILTER SHALL MEET THE SPECIFICATIONS IN TABLE 1.
6-6 MECHANICAL SHOCK
DROP THE FILTER RANDOMLY ONTO THE CONCRETE FLOOR FROM
THE HEIGHT OF 30cm 3 TIMES.THE FILTER SHALL FULFILL THE
SPECIFICATIONS IN TABLE 1.
6-7 VIBRATION
SUBJECT THE FILTER TO THE VIBRATION FOR 1 HOUR EACH IN X,Y
AND Z AXES WITH THE AMPLITUDE OF 1.5 mm AT 10 TO 55 Hz. THE
FILTER SHALL FULFILL THE SPECIFICATIONS IN TABLE 1.
6-8 LEAD FATIGUE
6-8-1 PULLING TEST
WEIGHT ALONG WITH THE DIRECTION OF LEAD WITHOUT AN
SHOCK 3 KG. THE FILTER SHALL SATISFY ALL THE INITIAL
CHARACTERISTICS.
6-8-2 BENDING TEST
LEAD SHALL BE SUBJECT TO WITHSTAND AGAINST 90℃
BENDING IN THE DERECTION OF THICKNESS. THIS OPERATION
SHALL BE DONE TOWARD BOTH DIRECTION. THE FILTER
SHALL SHOW NO EVIDENCE OF DAMAGE AND SHALLSATISFY
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