Helical Filters TYPE CBW13 CBT13 CBW13 Double Tuned CBT13 Triple Tuned Frequency Range: 130~220MHz CBW13 CBT13 6.1 6.1 2.5 30 18 2 2 0.3 0.7 2 6 26Max. 12.6 0.3 0.7 19 20.6Max. 38.5Max. 25.1 2 7.5 6.1 20 6.1 0.7 7.5 0.7 4 19 20.6Max. 13.4Max. 4 13.4Max. (Unit: mm) (Unit: mm) Examples of electrical characteristics Test circuits (bottom view) CBW13 Item Center Frequency Type CBW13 Bandwidth, at 1dB Attenuation fo + 10MHz fo - 10MHz 2 CBT13 145MHz 145MHz 3MHz 3MHz 20dB 28dB 22dB 35dB Ripple 0.3dB 0.5dB Insertion Loss 1.3dB 2dB Impedance 50 50 CBT13 2 4 8 R1 6 5 6 12 10 8 R1 R2 R2 R1=R2=50 R1=R2=50 Note: Case lugs must be grounded. Characteristics 271MT-1162A IN 50 OUT 50 272MT-1119D BOTTOM VIEW IN 50 OUT 50 10dB/div. 5MHz/div. OUT 50 10dB/div. 5MHz/div. Attenuation (dB) Attenuation (dB) Attenuation (dB) IN 50 BOTTOM VIEW BOTTOM VIEW 10dB/div. 5MHz/div. Center Frequency 171MHz 272MT-1125D Center Frequency 143MHz Center Frequency 171MHz continued on next page Helical Filters TYPE CBW13 CBT13 continued from previous page SELECTION GUIDE FOR STANDARD FILTERS TYPE CBW13 (Double tuned) TOKO Part Number Center Frequency (MHz) Bandwidth (-1dB) (MHz) Min. Selectivity Fo - 15MHz Fo + 15MHz (dB) Min. (dB) Min. 30 20 30 20 30 20 30 20 32 22 Ripple (dB) Max. Insertion Loss (dB) Max. 1.0 1.0 0.5 0.5 0.5 3.0 2.5 2.5 2.5 2.5 271MT-1149A 271MT-1150A 271MT-1151A 271MT-1152A 271MT-1153A 99 103 107.5 111 115 3.0 3.0 3.0 3.0 2.0 271MT-1154A 271MT-1155A 271MT-1156A 271MT-1157A 271MT-1158A 119 122 126 131 138 2.5 2.0 3.0 3.0 2.0 30 29 25 24 28 22 27 24 23 24 0.5 0.5 0.5 0.5 0.5 2.0 2.5 2.5 2.5 2.5 271MT-1159A 271MT-1160A 271MT-1161A 271MT-1162A 271MT-1163A 146 154 164 171 182.5 2.5 2.5 2.5 2.5 3.0 27 25 28 20 23 23 21 25 18 20 0.5 0.5 0.5 0.5 0.5 2.5 2.5 3.0 2.5 3.0 271MT-1164A 271MT-1165A 271MT-1166A 194.5 207.5 220 2.5 2.5 2.0 27 26 20 24 23 18 0.5 0.5 0.5 3.0 3.0 3.0 TYPE CBT13 (Triple tuned) TOKO Part Number Center Frequency (MHz) Bandwidth (MHz) Min. (dB) 272MT-1173A 272MT-1230D 272MT-1180A 272MT-1177D 272MT-1175D 100 107 110 124 130 4.0 (BW3) 3.0 (BW3) 3.0 (BW3) 3.5 (BW3) 3.0 (BW3) 272MT-1176D 272MT-1116A 272MT-1169D 272MT-1117D 272MT-1119D 133.7 134 137.5 140.21 143 3.5 (BW3) 5.0 (BW1) 2.0 (BW1) 3.7 (BW1) 3.0 (BW1) 23 ( 6) 24 (15) 35 (10) 26 (10) 35 (10) 272MT-1006A 272MT-1008A 272MT-1181D 272MT-1219A 272MT-1124D 145 145 147 156.7 157 2.8 (BW3) 1.2 (BW3) 4.0 (BW3) 1.5 (BW3) 3.5 (BW3) 25 ( 30 ( 20 ( 33 ( 17 ( 272MT-1174A 272MT-1123A 272MT-1221A 272MT-1218A 272MT-1148A 159 160 161 161.3 164 7.0 (BW3) 2.0 (BW3) 2.2 (BW1) 1.5 (BW3) 1.0 (BW3) 35 (20) 17 ( 5) 32 (10) 30 ( 6) 30 ( 5) Ripple (dB) Max. Insertion Loss (dB) Max. 1.0 1.0 1.0 1.0 1.0 4.0 4.5 5.5 3.5 5.5 18 ( 6) 24 (15) 30 (10) 25 (10) 22 (10) 1.0 1.0 1.0 1.0 1.0 3.5 3.0 4.5 3.0 4.0 25 ( 30 ( 15 ( 25 ( 13 ( 6) 6) 6) 6) 6) 5.0 5.0 1.0 1.0 1.0 8.0 8.0 3.5 7.0 3.5 33 (20) 15 ( 5) 40 (10) 25 ( 6) 25 ( 5) 1.0 1.0 1.0 1.0 1.0 3.0 6.0 4.5 7.0 8.5 Selectivity Fo - ( )MHz Fo + ( )MHz (dB) Min. (dB) Min. 30 (15) 30 (15) 33 (10) 22 (15) 37 (10) 30 (10) 21 ( 6) 17 ( 6) 21 ( 5) 18 ( 5) 6) 6) 6) 6) 6) continued on next page Helical Filters TYPE CBT13 continued from previous page SELECTION GUIDE FOR STANDARD FILTERS TYPE CBT13 (Triple tuned) TOKO Part Number Selectivity Fo - ( )MHz Fo + ( )MHz (dB) Min. (dB) Min. 15 (10) 16 (10) 35 (10) 25 (10) 16 (10) 14 (10) 15 (10) 13 (10) 17 (10) 17 (10) Ripple (dB) Max. Insertion Loss (dB) Max. 1.0 1.0 1.0 1.0 1.0 3.0 6.0 2.5 3.0 3.0 Center Frequency (MHz) Bandwidth (MHz) Min. (dB) 272MT-1118D 272MT-1120A 272MT-1125D 272MT-1126F 272MT-1127F 165 169 171 177 183 3.9 (BW1) 3.5 (BW3) 4.4 (BW1) 4.0 (BW1) 4.0 (BW1) 272MT-1131A 272MT-1128F 272MT-1208A 272MT-1129F 272MT-1182A 185 189 194.5 195 196 3.0 (BW3) 4.0 (BW1) 3.0 (BW3) 4.2 (BW1) 3.0 (BW3) 24 ( 6) 19 (10) 40 (15) 18 (10) 32 (10) 20 ( 6) 18 (10) 35 (15) 18 (10) 25 (10) 1.0 1.0 1.0 1.0 1.0 5.0 3.5 4.5 3.0 5.0 272MT-1195A 272MT-1130F 272MT-1132A 272MT-1209A 272MT-1146A 200 201 215 220 223 3.0 (BW3) 4.5 (BW1) 4.0 (BW3) 5.0 (BW3) 4.0 (BW3) 19 ( 6) 16 (10) 15 ( 6) 40 (15) 24 (10) 17 ( 6) 16 (10) 14 ( 6) 30 (15) 18 (10) 1.0 1.0 1.0 1.0 1.0 7.0 3.0 4.0 4.5 4.5 272MT-1188A 272MT-1013A 272MT-1007A 272MT-1080A 226.4 170 170 223 2.5 (BW1) 1.5 (BW3) 1.0 (BW1) 2.6 (BW1) 32 (10) 25 ( 6) 31 ( 5) 28 (10) 25 (10) 25 ( 6) 30 ( 5) 40 (20) 1.0 5.0 5.0 5.0 6.0 8.0 9.0 6.0