Crystal Filter Fundamental 21.4 MHz- and 45 MHz-Series MCF n Features l Compact and light. l Structure highly resistant to vibration and shock. D-360A to B D-361A to B n Specifications Model Number of poles Nominal frequency 3 dB Passband width 21N7.5A 2 21N7.5B 4 21N15A 2 21.4MHz Min. ±7.5 kHz Max. ±30 kHz Max. ±25 kHz at 18 dB at 40 dB Max. 0.5 dB Max. 1 dB Min. ±3.75 kHz Max. ±18 kHz Max. ±14 kHz at 18 dB at 40 dB Max. 0.5 dB Max. 1 dB Stop bandwidth Ripple Insertion loss (insertion attenuation) Max. 2.5 dB Max. 2 dB Max. 2.5 dB Max. 2 dB Max. 2.5 dB Min. 30 dB Within ±1 MHz Min. 18 dB Within ±1 MHz Min. 30 dB Within ±1 MHz Min. 7 dB Within ±1 MHz –20 to +70 ℃ D-360-A 21N30A-21.4MMN15-281 Min. 60 dB Within ±1 MHz Min. 35 dB Within ±1 MHz 2.3 kΩ // 1 pF Cc = 3.5 pF –20 to +70 ℃ D-360-B 21N30B-21.4MMN15-091 45S30AJ 2 45S30BN 4 –20 to +70 ℃ D-360-A 21N15A-21.4MMN15-060 45S7.5AA 2 45S7.5BF 4 45S15A 2 45S15BU 4 850 Ω // 6 pF Ordering code Model Number of poles Nominal frequency 3 dB Passband width – 1.6 kΩ // 1.3 pF 45MHz Min. ±7.5 kHz Max. ±30 kHz Max. ±22 kHz at 18 dB at 25 dB Max. 1 dB Max. 1 dB Min. ±3.75 kHz Max. ±12.5 kHz Max. ±12.5 kHz at 10 dB at 25 dB Max. 1 dB Max. 1 dB Stop bandwidth Ripple Insertion loss (insertion attenuation) Guaranteed attenuation Spurious characteristics Ordering code Min. ±15 kHz Max. ±50 kHz Max. ±50 kHz at 15 dB at 35 dB Max. 1 dB Max. 1 dB Max. 2 dB Max. 4 dB Max. 2 dB Max. 4 dB Max. 2 dB Max. 4 dB Min. 80dB at –910 kHz Min. 40 dB Within ±1 MHz 350 Ω // 6.5 pF Cc = 18 pF –20 to +70 ℃ D-361-B 45S7.5BF-45MMN15-384 Min. 60 dB at – (900 to 910) kHz Min. 40 dB at +(300 to 1000) kHz Min. 80 dB at –910 kHz Min. 40 dB Within ±1 MHz 650 Ω // 3 pF Cc = 9 pF –20 to +70 ℃ D-361-B 45S15BU-45MMN15-239 Min. 40 dB at –910 kHz Min. 5 dB Within ±1 MHz Min. 80 dB at –910 kHz Min. 20 dB Within ±1 MHz 800 Ω // 1.8 pF Cc = 6.5 pF –20 to +70 ℃ D-361-B 45S30BN-45MMN15-236 –20 to +70 ℃ D-361-A 45S7.5AA-45MMN15-210 Operating temperature range Package type 2.3 kΩ // 1 pF Min. 65dB at –910 kHz Min. 20 dB Within ±1 MHz 200 Ω // 4 pF Terminating impedance Min. ±15 kHz Max. ±50 kHz Max. ±50 kHz at 18 dB at 40 dB Max. 0.5 dB Max. 1 dB Min. 80 dB at –(200 to 1000) kHz Min. 65 dB at +(350 to 1000) kHz –20 to +70 ℃ D-360-A 21N7.5A-21.4MMN15-083 Terminating impedance 21N30B 4 Max. 2 dB 850 Ω // 5 pF Cc = 16 pF –20 to +70 ℃ D-360-B 21N7.5B-21.4MMN15-102 Spurious characteristics 21N30A 2 Min. 30 dB Within ±1 MHz Min. 18 dB Within ±1 MHz Min. 60 dB Within ±1 MHz Min. 40 dB Within ±1 MHz 1.6 kΩ // 1 pF Cc = 7 pF –20 to +70 ℃ D-360-B 21N15B-21.4MMN15-055 Guaranteed attenuation Operating temperature range Package type 21N15B 4 – 470 Ω // 6 pF –20 to +70 ℃ D-361-A 45S15A-45MMN15-229 1.2 kΩ // 1.5 pF –20 to +70 ℃ D-361-A 45S30AJ-45MMN15-237 n Dimensions D-361-A to B (NR-2D(3)Type) 3.75±0.2 D-360-B uses pairs of D-360-A. Connecting mark MCF R//C 18.0min 20.0min 3−φ0.35 2.2±0.2 6.9±0.2 8.0max 7.9max mm 4.7max 3.2max D-360-A to B (NR-2B(3)Type) 3.75 ±0.2 7.9max 0.35±0.05 3.2max MCF Cc R//C When D-360-B and D-361-B are used, please use a coupling capacitance. (Cc includes stray capacitance.) D-361-B uses pairs of D-361-A. cf18_080918_45MCF_e