LUGUANG LT390AW

LT390AW
Ceramic Filter
1.
SCOPE
This specification shall cover the characteristics of the ceramic filter with
390KHz.
2. PART NO.:
LT390AW
3. ELECTRICAL SPECIFICATIONS
3-1 Center frequency(fo)
.390KHz±2.0KHz max.
3-2 Band Width at 6dB
±25.0KHz min.(to 390KHz)
3-3 Band Width at 50dB
±50.0KHz max.(to 390KHz)
3-4 Stop Band Attenuation
45dB min. (at 390±100KHz max.)
3-5 Ripple
2.0dB max.(at 390±10.0KHz)
3-6 Insertion Loss
3.0dB max.(at the smallest loss)
3-7 Temperature Coefficient
±50ppm/℃ max.
of Center Frequency
(-20℃ to +80℃)
3-8 Spurious Response
0.1-1.0MHz min. 25dB
3-9 Group Delay Time Deviation
max. 30μsec.(390±4.0KHz)
3-10 Dielectric withstanding Voltage
100V.DC(1 minute)
3-11 Insulation Resistance(DC 10V)
min.100MΩ
3-12 Input / Output Impedance
1.0KΩ ± 10%
Note 1) Center frequency shall be defined as the center of the band width 6dB.
Note 2) Temperature coefficient of center frequency shall be defined as the
average of the center frequency shift throughout the specified
temperature range.
4. MEASUREMENT
4-1 Measuring Condition
The reference temperature shall be 25±2℃. Unless the result is doubtful,
the measurement shall be performed in the temperature range of 5 to 35℃.
4-2 Measuring Circuit
Rg + R1 = R2 = Input / Output Impedance
(1) Input
(2)(3)(4) Ground
(5) Output
SHENZHEN LUGUANG ELECTRONIC TECHNOLOGY CO.,LTD.
LT390AW
Ceramic Filter
5. DIMENSION (Unit : mm)
(1) Input
(2)(3)(4) Ground
(5) Output
*Material Instruction
Components
1
Terminal
2
Insulation resin
3
Case
Materials, Finish/Specifications
Phosphor bronze/silver-plating
Epoxy resin(black)
PBT
6.ENVIRONMENTAL CHARACTERISTICS
6-1 Humidity
Keep the filter at 40℃ ± 2℃ and 90 to 95% RH for minimum 8 hours.
Then, release the filter into the room conditions for 1 hour prior to the
measurement. It shall fulfill the electrical specifications in section 3.
6-2 Vibration
Subject the filter to the vibration for 1 hour each in X, Y and Z axes with the
amplitude of 1.0mm at 10 to 55Hz. It shall fulfill the electrical specifications
in section 3.
6-3 Mechanical Shock
Drop the filter randomly onto a concrete floor from the height of 30cm 3
times. It shall fulfill the electrical specifications in section 3.
6-4 Solder Heat – Resistance
The filters shall be assembled to the 1mm “through-hole” P.C. board and
placed in a solder solution (SU 63% & PB 37%) at 250 ± 10℃ twice for
duration of 3 seconds. After removal from the solder solution chamber, the
filters may be cleaned with chloroform and left for more that 24 hours at
the room temperature. It shall fulfill the electrical specifications in section 3.
6-5 High Temperature Exposure
Put subject filter to chamber at 80 ± 5℃ for 96 ± 4 hours. Then, release
the filter into the room condition for 1 hour prior to the measurement. It
shall meet the electrical specifications in section 3.
6-6 Low Temperature Exposure
Put subject filter to –20 ± 5℃ for 96 ± 4 hours. Then, release the filter into
SHENZHEN LUGUANG ELECTRONIC TECHNOLOGY CO.,LTD.
LT390AW
Ceramic Filter
the room conditions for 1 hour prior to the measurement. It shall fulfill the
electrical specifications in section 3.
6-7 Temperature Cycling
Subject filter is put into low temperature of -40℃ for 30 minutes, followed
by a high temperature of +85℃ for 30 minutes. Cycling shall be repeated 5
times with a time interval of 15 minutes under room conditions. Then,
release the filter into the room conditions for 1 hour prior to the
measurement. It shall fulfill the electrical specifications in section 3.
6-8 Lead Fatigue
6-8-1 Pulling Test
Weight 3Kg along to the direction of lead without a sudden shock. The
filter shall show no evidence of damage and shall satisfy all the initial
characteristics.
6-8-2 Bending Test
Lead shall be subject to withstand against 90°bending in the direction of
thickness. This operation shall be done towards both directions. The filter
shall show no evidence of damage and shall satisfy all the initial electrical
characteristics.
SHENZHEN LUGUANG ELECTRONIC TECHNOLOGY CO.,LTD.