CDBM450C24 Datasheet, PDF (1/2 Pages) Shenzhen Luguang Electronic Technology Co., Ltd – Ceramic Discriminator

CDBM450C24
Ceramic Discriminator
1. Application
This specification is applicable to ceramic discriminator CDBM450C24 use for
communication equipment.
2. Electrical Characteristics
This discriminator must need following performance.
2-1) Anti-resonate frequency (Fa) : 450±1.5 KHz.
2-2) Resonant Impedance (Ri): 70 ohms Max.
2-3) ΔF(Fa-Fr)
: 48±5.0 KHz.
Fr: resonant frequency
2-4) Capacitance (at 1 kHz)
: 550 pF±20%.
3. Environmental Test
3-1) Temperature Characteristics
At the temperature range of 25±5℃,the discriminators shall meet the electrical
properties in item 2-1~2-4,and at –20~+80℃ the Anti-resonant frequency shall
not very more than ±2.0 kHz.
3-2) Vibration
The discriminators shall suffer no mechanical damage and meet the 2-1~2-4
electrical Characteristics after being vibrated with a sine wave motion having an
amplitude of 1.0 mm from 10 to 55KHz per 1 minute, applied for 30 minutes in
three different directions (x,y,z).
3-3) Humidity
The discriminators shall be place in a humidity chamber at 90~95%
relative humidity and 40~45 ℃ for a period of minimum 8 hours. The
discriminators shall be left for the period of more than 24 hours at the room
temperature after its removal from the humidity chamber.The discriminators shall
meet the 2-1~2-4 electrical characteristics and the appearance of discriminators is
to be normal.
3-4) Dropped Shock
The discriminators shall suffer no mechanical damage and meet the
2-1~2-4 electrical characteristics outlined on this specification after being dropped
3 times to concrete floor from the 30 cm height.
3-5) Solder ability
The terminal surface shall be covered over 3/4 by the solder after dipped
the leads into 230±5℃ solder pot containing (Sn 63% Pb 37%) molten alloy for
3±1 seconds.
3-6) Soldering Heat-Resistance
The discriminators shall be assembled to the 1 mm “through-hole” P.C.
bored and placed in solder solution (Sn63% Pb37%) at 250±10℃ for duration of
3±1 seconds. After removal from the solder solution chamber, the discriminators
may be cleaned with chlorothene and left for more then 24 hours at the room
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