LPBJ
SERIES
2 ELEMENT CERAMIC FILTER
The LPBJ Series is a ceramic filter for
AM use.
FEATURES
• AM use
• IF filter
• 2 elements
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PART NUMBER
LPB 450J
CENTER
FREQUENCY (fo)
450 ±2.0 KHz
3dB
BANDWIDTH
5.5 ±1.5 KHz
SELECTIVITY
(±9 KHZ OFF)
17 dB Min. (23)
INSERTION
LOSS
6 dB Max. (3)
1. Center frequency is available in a range from 450 to 470 KHz.
2. Center frequency shall be defined as the central value of the band at 3dB.
3. Temperatue coefficient of center frequency is based on the center frequency @ 25˚C.
( ) = Typical values
PACKAGE DIMENSIONS (mm)
9.0
±0.3
2.6
±0.3
R1
1
3
FILTER
5.0
±0.3
Rg
2
S.S.G.
E1
R2
RF
E2
V.M.
0.15
±0.03
3.5
±0.5
R1 + Rg = 3.0 KΩ
Insertion Loss = 2xlog(E1/2/E2)
0.7
Connection
1 Input
2 Ground
3 Output
2.5
±0.2
1
2
3
0.7
Connection
1 Input
2 Ground
3 Output
Figure 2) Measuring Circuit
2.5
±0.2
2.5
±0.2
Figure 1) LPBJ Series – Front, Side and Bottom views
ITEM \ TYPE
WINDING SPECIFICATIONS
3
2
4
7 x 7 mm IFT
x
—
y
y
—
—
85 T
67 T
90
180pF
23 T
5 x 5 mm IFT
x
—
y
y
—
—
84 T
98 T
65
180pF
33 T
Bottom
view
6
1
UNLOADED Qu
TUNING CAPACITY
Figure 3) LPBJ – Recommended IFT Specification
ECS, INC. INTERNATIONAL
1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM
CERAMIC FILTERS
67
CERAMIC FILTERS
ECS [ ECS, INC. ]
