http://www.luguang.cn
1.
Email: lge@luguang.cn
SCOPE
This Specification Shall Cover The Characteristics Of The Ceramic
Filter With 10.7MHz For FM Receiver.
2. SPECIFICATION NO:
3.
4.
PART NUMBER:
LT10.7MA19
ELECTRONICAL CHARACTERISTICS
A. 3dB and Width (KHz)
350 Min
B. 20dB and Width (KHz)
950 Max
C .Insertion Loss (dB)
3.0±2.0Max.
D. Spurious Attenuation (9½12MHz) (dB)
20 Min.
E. Temperature Coefficient Of Center Frequency(-20 To +80℃)
±50ppm/℃ Max
F. Standard Rule :
TABLE 1
Center
frequency
Color
D
10.64MHz
±30KHz
Black
B
10.67MHz
±30KHz
Bule
A
10.70MHz
±30KHz
Red
C
10.73MHz
±30KHz
Orange
E
10.76MHz
±30KHz
White
5. MEASUREMENT
A.
Measurement Shall Be Carried Out At The Reference Temperature
Of 25℃ ±2℃. It Shall Be Possibly Done At 15℃ To 35℃ unless It Is
Questionable.
B. TEST CIRCUIT
(Including stray capacitance and input capacitance of RF voltmeter)
SHENZHEN LUGUANG ELECTRONIC TECHNOLOGY CO.,LTD.
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6. DIMENSIONS(mm)
Email: lge@luguang.cn
7. ENVIRONMENTAL CHARACTERISTICS
7-1 IGH TEMPERATURE EXPOSURE
subject the fitter to +80℃ for 24 hours. then release the filter into room
condition for 4 hours prior to measurement , it shall fulfill the the
specifications in table 2.
7-2 MOISURE
keep the filter at 40℃ and 95%RH for 24 hours, then release the filter
into the room conditions for 2 to hours prior to the measurement.
it shall fulfill the specifications in table 2.
7-3 Low Temperature
subject the filter to -20℃ for 24 hours. then release the filter into the
room conditions for 4 hours prior to the measurement. it shall fulfill
the specific ations in table 2.
7-4 TEMPERATURE CYCLING
subject the filter to alow temperature of -20℃ for 30 minutes.
followsing by a high temperature of +80℃ 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 2.
7-5
RESISTANCE TO SOLDER HEAT
dip the filter terminals no closer than 1.5mm into the solder bath at
260℃ ±10℃for 5±0.5 sec. then release the filter in to the room conditions
for24 hours. the filter shall meet the specifications in table 2.
7-6 MECHANICAL SHOCK
drop the fil ter randomly onto the concrete floor from the height of 1 meter
3 times. it shall fulfill
the specifications in table 2.
SHENZHEN LUGUANG ELECTRONIC TECHNOLOGY CO.,LTD.
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7-7
Email: lge@luguang.cn
VIBRATION
subject the filter to vibration each in x,y and z axes with the amplitude
of 1.5mm for2 hours each direction , the frequency shall be varied
uniformly between the limits of 10 to 50HZ, then release the filter into room
condition for 2 hours prior to the measurement. It shall fulfill specifications
in table 2
7-8
SOLDERABLLITY
dip the filter terminals no closer then 2 mm into the solder bath at 235±5℃
for 2±0.5sec. more then 95% of the terminal surface of the fllter shall be
covered with fresh solder.
7-9
LEAD FATIGUE
7-9-1 pulling test
weight along with the direction of lead without an shock 0.5 kg. the
filter shall satisfy all the initiall characteristics.
7-9-2 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 fil ter shall show noevidence of damage and shall satisfy all
the initial electric al characteristics
TABLE 2
ITEM
Center Frequency change
Insertion loss (dB)
LIMIT VALAE
±0.5%
max
0.5 dB max
8 REVIEW OF SPECIFICATION
when something gets doubtful with this specification , we shall jointly work
to get an agreement.
SHENZHEN LUGUANG ELECTRONIC TECHNOLOGY CO.,LTD.
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