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 CENTER FREQUENCY (fo) 450 ±2.0 KHz PART NUMBER LPB 450J 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) 2.6 ±0.3 9.0 ±0.3 R1 1 3 FILTER 5.0 ±0.3 Rg 3.5 ±0.5 S.S.G. 0.15 ±0.03 2 E1 R2 R1 + Rg = 3.0 KΩ Insertion Loss = 2xlog(E1/2/E2) 0.7 2 Connection 1 Input 2 Ground 2.5 ±0.2 1 RF E2 V.M. 3 Output Connection 3 Figure 2) Measuring Circuit 0.7 1 Input 2 Ground 3 Output 2.5 ±0.2 2.5 ±0.2 Figure 1) LPBJ Series – Front, Side and Bottom views ITEM \ TYPE WINDING SPECIFICATIONS 3 7 x 7 mm IFT ②—➂ ➃—➅ ①—② 5 x 5 mm IFT ②— ➂ ➃—➅ 4 Bottom view 2 1 ①—② 85 T 67 T 23 T 84 T 98 T 33 T 6 UNLOADED Qu TUNING CAPACITY 90 180pF 65 180pF 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