455C54 [LGE]
Ceramic Discriminator; 陶瓷鉴
LGE 
455C54
Ceramic Discriminator
1. APPLICATION
This specification is applied to ceramic discriminator : 455C54
used for quadrature detection with IC : TA31142F (TOSHIBA )
2. SPECIFICATION No.: QJ/A5•25•0512
MODEL NAME
Part Name
55C54
Customer’s Part No.
Customer’s Draving No.
3. DIMENSIONS : ( mm )
Material List
Polybutenetelephthalate
Case
(mixture of glass fiber)
Phosphor bronze Ag Clad
Epoxy resin
Terminal
Base Sealing
4. MAXIMUM RATINGS
4.1 Withstanding Voltage
(Between each terminal)
:
D.C. 5OV. 1 minute
4.2 Insulation Resistance
(Between each terminal)
:
100 MΩ min. at D.C. 100V
4.3 Input signal level
:
5dB (50Ω Termination )
- 20℃ to + 80 ℃
25 ±5℃
4.4 Operating Temperature Range
4.5 Storage Temperature Range
:
:
SHENZHEN LUGUANG ELECTRONIC TECHNOLOGY CO.,LTD
.
455C54
Ceramic Discriminator
5. ELECTRICAL CHARACTERISTICS
Item
( 0℃ to + 40 ℃ )
Requirements
±4.0 KHz min.
40 ± 20 mV
5-1
5-2
5-3
5-4
Receiver Audio 3dB Bandwitdth (from 455KHz)
Receiver Audio Output Voltage (at 455KHz)
Distortion (at 455 KHz)
3.0% max.
Withstanding Voltage
50V D.C. for 1 minute
5-5 Test Method
Input signal Condition Input level
: 80dB
Frequency Deviation : ±4.0KHz
Modulation Frequency : 1 KHz
1) Recoverd Audio
3dB Bandwidth
Input the above signal and sweep the carrier frequency
around 455 KHz and find out the maximum audio
output frequency. Then sweep the carrier frequency
again and find two frequencies which are observed
-3dB attenuation points from the maximum point .
Higher frequency point is called (f1) and lower called
(f2), (f1-455KHz)is defined as upper 3dB bandwidth
and (455Khz-f2) defined as lower 3 dB bandwidth.
2) Receiver Audio
Output Voltage
Receiver audio output voltage shall be measured
when carrier frequency is adjusted to 455KHz.
3) Distortion
Carrier frequency is adjusted to 455Khz. And
then ,distortion shall be measured with 1 kHz
modulation frequency.
6. PRYSICAL AND ENVIRONMENTAL CHARACTERISTICS
Test Item
Condition of Test
Requirements
6-1 Lead Strength After force 1.0Kg is applied to each lead in axial direction.
Lead Pulling filter shall be measured.
No
mechanical
and the
Lead Bending When force of 0.5Kg is applied to each lead in axial damage
measured values shall
meet item 5.
。
direction the lead shall be folded up to 90 from the axial
direction and folded back to the axial direction .
Filter shall be measured after being applied vibration of
amplitude of 1.5mm with 600 to 3,300 r.p.m. band of
vibration frequency to each of 3 perpendicular directions
for 2 hour .
6-2
Vibration
SHENZHEN LUGUANG ELECTRONIC TECHNOLOGY CO.,LTD
.
455C54
Ceramic Discriminator
6-3 Random Drop Filter shall be measured after 3 times random dropping
from the height of 30cm on concrete floor
Temperature Filter shall be measured within -20 ℃ to +80 ℃
Characteristics temperature range.
6-4
6-5
Humidity
Filter shall be measured after being placed in a chamber
with 90 to 95% R. H. at 40±2℃ for 100 hours and then
being placed in natural condition for 2 hour.
The measured values
shall meet Table 1.
6-6
Resistance to
Lead terminals are immersed up to 1.5mm from filter’s
Soldering Heat body in soldering bath of 260±5℃ for 5±0.5 seconds and
then filter shall be measured after being placed in natural
condition for 2 hour.
6-7 Life Test（High Filter shall be measured after being placed in chamber with
Temperature） 80℃ for 100 hours and then being placed in natural
condition for 2 hour.
6-8
Life Test
Filter shall be measured after being placed in a chamber
（Low
with -20℃ for 100 hours and then being placed in natural
Temperature） condition for 2 hours.
6-9 Thermal Shock After temperature cycling of -20℃（30 minutes）to +80℃
（30 minutes）was performed 5 times. Filter shall be
returned to room temperature. And filter shall be measured
after being placed in natural condition for 2 hours.
Item
Requrements
Receiver Audio 3dB Bandwidth
(from 455KHz)
Receiver Audio Output Voltage
(at 455KHz)
±4.0 KHz min.
40±20 mV
Distortion
( at 455KHz)
4.0 % max.
Withstanding Voltage
50V D. C. for 1 minute.
Table 1.
SHENZHEN LUGUANG ELECTRONIC TECHNOLOGY CO.,LTD
.
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