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ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM

CERAMIC FILTERS

CERAMIC FILTERS

2.5

±0.2

0.15

±0.03

2.6

±0.3

0.7

9.0

±0.3

Connection

Input

Ground

Output

3

2

1

2.5

±0.2 2.5 ±0.2

1

2

3

2 ELEMENT CERAMIC FILTER

OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS

CENTER

3dB

SELECTIVITY

INSERTION

PART NUMBER

FREQUENCY (fo)

BANDWIDTH

(±9 KHZ OFF)

LOSS

LPB 450J

450 ±2.0 KHz

5.5 ±1.5 KHz

17 dB Min. (23)

6 dB Max. (3)

Figure 1) LPBJ Series – Front, Side and Bottom views

The LPBJ Series is a ceramic filter for

AM use.

FEATURES

• AM use

• IF filter

• 2 elements

PACKAGE DIMENSIONS (mm)

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

ITEM \ TYPE

7 x 7 mm IFT

5 x 5 mm IFT

85 T

67 T

23 T

84 T

98 T

33 T

UNLOADED Qu

90

65

TUNING CAPACITY

180pF

180pF

3

4

2

1

6

WINDING SPECIFICATIONS

Bottom

view

R1

Rg

R1 + Rg = 3.0 K

Ω

Insertion Loss = 2xlog(E1/2/E2)

S.S.G.

FILTER

E2

E1

RF

V.M.

R2

1

2

3

Connection

Input

Ground

Output

3

2

1

Figure 2) Measuring Circuit

Figure 3) LPBJ – Recommended IFT Specification