Shoulder LTM450IW Center frequency shall be defied as the central value of the band with at 6 db Datasheet

SHOULDER ELECTRONICS LIMITED
CERAMIC FILTER Data Sheet
PRODUCT 产 品:
CERAMIC
MODEL NO 型 号:
LTM…W
PREPARED 编 制:
Fengyu
CHECKED 审 核:
York
APPROVED 批 准:
Lijiating
DATE
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日 期:
FILTER
2008-01-25
Page: 1
SHOULDER ELECTRONICS LIMITED
1. LTM 455(450)…W SERIES
Part
Number
Center
Insertion
Pass Band
6dB
40dB
Stop Band Att.
I/O
Frequency
Loss
Ripple
Bandwidth
Bandwidth
±100 KHz
Impedance
min
max
min
(KHz)
(dB)
(dB)
(KHz)
(KHz)
(dB)
(Ohm)
LTM450BU
450±2.0
4
2
±15
±30
40
1500
LTM455BW
455±2.0
4
2
±15
±30
40
1500
LTM450CW
450±2.0
4
2
±12.5
±24
40
1500
LTM455CW
455±2.0
4
2
±12.5
±24
40
1500
LTM450DW
450±1.5
4
2
±10
±20
40
1500
LTM455DW
455±1.5
4
2
±10
±20
40
1500
LTM450EW
450±1.5
6
2
±7.5
±15
40
1500
LTM455EW
455±1.5
6
2
±7.5
±15
40
1500
LTM450FW
450±1.5
6
2
±6
±12.5
40
2000
LTM455FW
455±1.5
6
2
±6
±12.5
40
2000
LTM450GW
450±1.5
6
2
±4.5
±10
40
2000
LTM455GW
455±1.5
6
2
±4.5
±10
40
2000
LTM450HW
450±1.0
6
2
±3
±9
40
2000
LTM455HW
455±1.0
6
2
±3
±9
40
2000
LTM450IW
450±1.0
6
2
±2
±7.5
40
2000
LTM455IW
455±1.0
6
2
±2
±7.5
40
2000
LTM450HTW
450±1.0
6
2
±3
±9
60
2000
LTM455HTW
455±1.0
6
2
±3
±9
60
2000
2. PART NUMBERING : LTM455HTW
3. ELECTRONICAL SPECIFICATIONS
A. CENTRE FREQUENCY (f。)
:
B. BAND WIDTH AT 6 dB
:
C. BAND WIDTH AT 50 dB
:
D. STOP BAND ATTENUATION :
E. RIPPLE
:
F. INSERTION LOSS
:
G. TEMPRATURE COEFFICIENT
OF CENTER FRENQUENCY :
455KHz±1.0KHz.
±3.0 KHz MIN.(TO 455KHz)
±9.0 KHz MAX.(TO 455KHz)
45.0 dB MIN.(AT f。±100KHz)
2.0 dB MAX.(AT f。±5.0KHz)
5.0 dB MAX (AT THE SMALLEST LOSS)
±50PPM/℃ Max.(-20 TO +80℃)
H. INPUT/OUTPUT IMPEDANCE : 1.5KΩ
NOTE : A) CENTER FREQUENCY SHALL BE DEFIED AS THE CENTRAL
VALUE OF THE BAND WITH AT 6 dB
B) TEMPRATURE COEFFICIENT OF CENTER FREQUENCY
SHALL BE DEFINED AS THE AVERAGE OF THE CENTRAL
FREQUECY.
4. MEASUREMENT
A. ENVIRONMENTAL CONDITION
MEASUREMENT SHALL BE
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CARRIED OUT AT THE REFERENCE
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SHOULDER ELECTRONICS LIMITED
TEMPERATURE OF 25℃ ±2℃. IT SHALL
AT 5℃TO 35℃UNLESS IT IS QUESTIONABLE.
B. MEASURING CIRCUIT
BE
POSSIBLY
DONE
#S.S.G.
(STANDARD SIGNAL GENERATION)
R.F.V.M.
(RADIO FREQUENCY VOLTAGE METER)
Rg+R1=R2=1.5 KΩ
C<=50 PF
5.
DIMENSIONS(mm)
6. ENVIRONMENTAL CHARACTERISTICS
6-1 HIGH TEMPERATURE EXPOSURE
SUBJECT THE FILTER TO +80℃ FOR 96 HOURS. THEN RELEASE THE
FILTER INTO THE ROOM CONDITIONS FOR 2 HOURS PRIOR TO THE
MEASUREMENT. IT SHALL FULFILL THE SPECIFICATIONS IN TABLE
1.
6-2 MOISUTRE
KEEP THE FILTER AT 40℃ AND 95% RH FOR 96 HOURS.THEN
RELEASE THE FILTER INTO THE ROOM CONDITIONS FOR
2 HOURS PRIOR TO THE MEASUREMENT. IT SHALL FULFILL THE
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SHOULDER ELECTRONICS LIMITED
6-3
6-4
6-5
6-6
6-7
6-8
SPECIFICATIONS IN TABLE 1.
LOW TEMPERATURE EXPOSURE
SUBJECT THE FILTER TO -20℃ FOR 96 HOURS. THEN RELEASE THE
FILTER INTO THE ROOM CONDITIONS FOR 2 HOURS PRIOR TO THE
MEASUREMENT.
IT SHALL
FULFILL
THE SPECIFICATIONS IN
TABLE 1.
TEMPERATURE CYCLING
SUBJECT THE FILTER TO A LOW TEMPERATURE OF -20℃ FOR 30
MINUTES. FOLLOWSING BY A HIGH TEMPERATURE OF +80℃ FOR 30
MINUTES. THEN RELEASE THE FILTER INTOTHE ROOM CONDITIONS
FOR 2 HOURS PRIOR TO THE MESUREMENT. IT SHALL MEET THE
SPECIFICATIONS IN TABLE 1.
RESISTANCE TO SOLDER HEAT
DIP THE FILTER TERMINALS NO CLOSER THAN 1.5mm INTO THE
SOLDER BATH AT 260℃ ±10℃ FOR 10±1 SEC. THEN RELEASE THE
FILTER INTO THE ROOM CONDITIONS FOR 2 HOURS. THE
FILTER SHALL MEET THE SPECIFICATIONS IN TABLE 1.
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.
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 FULFILLTHE SPECIFICATIONS IN TABLE 1.
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 INITIALL
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 SHALL SATISFY
ALL THE INITIAL ELECTRICAL CHARACTERISTICS.
TABLE 1
ITEM
CENTRE FREQUENCY(f。)
BAND WIDTH(6 dB)
SELECTIVITY(40dB)
STOP BAND ATTENUATION
RIPPLE
INSERTION LOSS
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SPECIFICATION
455±1.0 KHz
±3.0 KHz Min
±9.0 KHz Max
60.0 dB Min
2.0 dB Max
6.0 dB Max
Page: 4
SHOULDER ELECTRONICS LIMITED
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