Filter module for analog signal processing effective for frequency band control, noise removal, etc. Various filter characteristics such as low-pass, high-pass, band-pass, and band-elimination are available, and characteristics such as order and attenuation slope can be freely selected.
- We offer a wide range of products
- It is possible to combine the characteristics according to the customer's purpose of use.
| Resistor-tuned filter series | Filter module that can adjust the cutoff frequency (center frequency) with an external resistor |
| Voltage-tuned filter series | Filter module whose cutoff frequency (center frequency) can be adjusted by the DC voltage supplied to the module |
| Programmable filter series | Filter module that can adjust cutoff frequency (center frequency) by logic signal |
| Fixed frequency filter series | Products with various filter characteristics such as cut-off frequency (center frequency), attenuation slope, and attenuation characteristics are available. You can choose the product that suits your needs |
| Application specific filters | Application-specific filter modules for BEF for hum rejection, BPF for 200b/s modems, and LPF for ISDN terminals |
Resistor-tuned filter series
Cutoff frequency can be set with an external resistor
| Type name | type | degree | Attenuation gradient [dB/oct] |
Characteristic | Cutoff frequency (center frequency) [Hz] |
Notes | List price (yen) Body (excluding tax) |
product image |
| LR-4BL2 | LPF | quaternary | 24 | Butterworth | 100~20k | 5,000 |  |
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| LR-4BL3 | LPF | quaternary | 24 | Butterworth | 10k~100k | 6,000 | ||
| SR-4BL1 | LPF | quaternary | 24 | Butterworth | 40~1.6k | 5,000 |  |
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| SR-4BL2 | LPF | quaternary | 24 | Butterworth | 400~20k | |||
| SR-4BL3 | LPF | quaternary | 24 | Butterworth | 5k~100k | 6,000 | ||
| SR-4FL1 | LPF | quaternary | Equivalent to 42 | Coalition Chebyshev | 40~1.6k | 5,000 | ||
| SR-4FL2 | LPF | quaternary | Equivalent to 42 | Coalition Chebyshev | 400~20k | |||
| SR-4FL3 | LPF | quaternary | Equivalent to 42 | Coalition Chebyshev | 5k~100k | 6,000 | ||
| SR-4BH1 | HPF | quaternary | 24 | Butterworth | 40~1.6k | 5,000 | ||
| SR-4BH2 | HPF | quaternary | 24 | Butterworth | 400~5k | |||
| SR-4FH1 | HPF | quaternary | Equivalent to 42 | Coalition Chebyshev | 40~1.6k | |||
| SR-4FH2 | HPF | quaternary | Equivalent to 42 | Coalition Chebyshev | 400~5k | |||
| SR-1BP1 | BPF | primary pair | Q-value 5~50 | Butterworth | 40~1.6k | 4,000 | ||
| SR-1BP2 | BPF | primary pair | Q-value 5~50 | Butterworth | 400~10k | |||
| SR-2BP1 | BPF | 2nd order pair | Q-value 5 | Butterworth | 40~1.6k | 6,000 | ||
| SR-2BP2 | BPF | 2nd order pair | Q-value 5 | Butterworth | 400~10k | |||
| SR-2BE1 | BEF | 2nd order pair | Q-value 5 | Butterworth | 40~1.6k | 6,500 | ||
| SR-2BE2 | BEF | 2nd order pair | Q-value 5 | Butterworth | 400~10k | |||
| SR-2BLH1 | LPF, HPF | Secondary | 12 | Butterworth | 40~1.6k | 4,000 | ||
| SR-2BLH2 | LPF, HPF | Secondary | 12 | Butterworth | 400~20k | |||
| SR-2BLH3 | LPF, HPF | Secondary | 12 | Butterworth | 5k~100k | 5,000 | ||
| SRA-4BL1 | LPF | quaternary | 24 | Butterworth | 40~1.6k | *1 | 5,000 | |
| SRA-4FL1 | LPF | quaternary | Equivalent to 42 | Coalition Chebyshev | 40~1.6k | *1 | ||
| SRA-4BH1 | HPF | quaternary | 24 | Butterworth | 40~1.6k | *1 | ||
| SRA-4FH1 | HPF | quaternary | Equivalent to 42 | Coalition Chebyshev | 40~1.6k | *1 | ||
| SRA-2BP1 | BPF | 2nd order pair | Q-value 5 | Butterworth | 40~1.6k | *1 | 6,000 | |
| SV-4BL1 | LPF | quaternary | 24 | Butterworth | 10~10k | 5,000 |  |
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| SV-4BL2 | LPF | quaternary | 24 | Butterworth | 100~100k | |||
| SV-4FL1 | LPF | quaternary | Equivalent to 42 | Coalition Chebyshev | 10~10k | |||
| SV-4FL2 | LPF | quaternary | Equivalent to 42 | Coalition Chebyshev | 100~100k | |||
| HR-4BL1 | LPF | quaternary | 24 | Butterworth | 10~1.6k | *2 | 13,800 |  |
| HR-4BL2 | LPF | quaternary | 24 | Butterworth | 100~100k | *2 | ||
| HR-4FL1 | LPF | quaternary | Equivalent to 42 | Coalition Chebyshev | 10~1.6k | *2 | ||
| HR-4FL2 | LPF | quaternary | Equivalent to 42 | Coalition Chebyshev | 100~100k | *2 | ||
| HR-4BH1 | HPF | quaternary | 24 | Butterworth | 10~1.6k | *2 | ||
| HR-4BH2 | HPF | quaternary | 24 | Butterworth | 100~50k | *2 | ||
| HR-4FH2 | HPF | quaternary | Equivalent to 42 | Coalition Chebyshev | 100~50k | *2 | ||
| HR-2BP1 | BPF | 2nd order pair | Q-value 5 | Butterworth | 10~1.6k | *2 | 15,900 | |
| HR-2BP2 | BPF | 2nd order pair | Q-value 5 | Butterworth | 100~50k | *2 | ||
| RT-8FLA1 | LPF | 8th order | 135 | Coalition Chebyshev | 10~2k | 20,000 |  |
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| RT-8FLA2 | LPF | 8th order | 135 | Coalition Chebyshev | 100~20k | |||
| RT-8FLB1 | LPF | 8th order | 100 | Coalition Chebyshev | 10~2k | |||
| RT-8FLB2 | LPF | 8th order | 100 | Coalition Chebyshev | 100~20k | |||
| RT-3BP1 | BPF | cubic pair | Q-value 4.32 | Butterworth | 10~2k | 15,000 | ||
| RT-3BP2 | BPF | cubic pair | Q-value 4.32 | Butterworth | 100~20k | |||
| RD-404D1 | SR/SRA series cutoff frequency setting resistance module | Note reference | *3 | 9,000 |  |
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| RD-404D2 | SR/SRA series cutoff frequency setting resistance module | Note reference | *4 | |||||
LPF: Low Pass Filter, HPF: High Pass Filter, BPF: Band Pass Filter, BEF: Band Elimination Filter
*1: Low power consumption type (1/10 of SR series)
*2: High reliability type (hermetic seal method)
*3 : Combination with SR/SRA-***1: 10~160Hz (10Hz resolution), Combination with SR/SRA-***2: 100~1.6kHz (100Hz resolution)
*4 : Combination with SR/SRA-***1: 100~1.6kHz (100Hz resolution), Combination with SR/SRA-***2: 1k~16kHz (1kHz resolution)
Voltage-tuned filter series
Cutoff frequency can be set by external DC voltage
| Type name | type | degree | Attenuation gradient [dB/oct] |
Characteristic | Cutoff frequency (center frequency) [Hz] |
Notes | List price (yen) Body (excluding tax) |
product image |
|---|---|---|---|---|---|---|---|---|
| VT-4BLA | LPF | quaternary | 24 | Butterworth | 100~100k | Frequency control voltage range: +10m~+10V | 21,000 |  |
| VT-4BHA | HPF | quaternary | 24 | Butterworth | 20~20k | Frequency control voltage range: +10m~+10V | ||
| VT-2BPA | BPF | 2nd order pair | Q-value 5 | Butterworth | 200~20k | Frequency control voltage range: +100m~+10V |
Programmable filter series
Cutoff frequency can be set by logic signal
| Type name | type | degree | Attenuation gradient [dB/oct] |
Characteristic | Cutoff frequency (center frequency) [Hz] |
Notes | List price (yen) Body (excluding tax) |
product image |
|---|---|---|---|---|---|---|---|---|
| DT-212D | LPF, HPF, BPF | 2nd order (12dB/oct) LPF or HPF, or 1st order pair (6dB/oct) BPF | *fc min : by external capacitor fc max : 1599 x fc min |
Frequency setting logic: BCD 3 digits | 21,000 |  |
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| DT-212DC1 | LPF, HPF, BPF | *fc min : 1Hz fcmax: 1.599kHz |
Frequency setting logic: BCD 3 digits | 25,000 | ||||
| DT-212DC2 | LPF, HPF, BPF | *fc min : 100Hz fcmax: 159.9kHz |
Frequency setting logic: BCD 3 digits | |||||
| DT-208D | LPF, HPF, BPF | *fc min : by external capacitor fc max : 159 x fc min |
Frequency setting logic: BCD 2 digits | 24,000 |  |
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| DT-208DC3 | LPF, HPF, BPF | *fc min : 10kHz fcmax: 1.59MHz |
Frequency setting logic: BCD 2 digits | 27,000 | ||||
| DT-408D | LPF, HPF, BPF | 2ch type with the same characteristics as above | *fc min : by external capacitor fc max : 159 x fc min |
Frequency setting logic: BCD 2 digits | 26,000 |  |
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| DT-408DC2 | LPF, HPF, BPF | *fc min : 1kHz fcmax: 159kHz |
Frequency setting logic: BCD 2 digits | 29,000 | ||||
| DT-5FL1 | LPF | Fifth | equivalent to 60 (Attenuation 55dB or more) |
Coalition Chebyshev | 10,20,50,100,200,500,1k,2k | Frequency setting logic: 3bit binary | 26,000 |  |
| DT-5FL2 | LPF | Fifth | equivalent to 60 (Attenuation 55dB or more) |
Coalition Chebyshev | 100,200,500,1k,2k,5k,10k,20k | Frequency setting logic: 3bit binary | ||
| DT-6FL1 | LPF | Sixth order | equivalent to 80 (Attenuation 60dB or more) |
Coalition Chebyshev | 10,20,50,100,200,500,1k,2k | Frequency setting logic: 3bit binary | 28,000 | |
| DT-6FL2 | LPF | Sixth order | equivalent to 80 (Attenuation 60dB or more) |
Coalition Chebyshev | 100,200,500,1k,2k,5k,10k,20k | Frequency setting logic: 3bit binary | ||
| DT-8FL1 | LPF | 8th order | equivalent to 130 (Attenuation 82dB typ) |
Coalition Chebyshev | 20,50,100,200,500,1k,2k,5k,10k,20k | Frequency setting logic: 4bit binary | 35,000 |  |
| DT-8FL2 | LPF | 8th order | equivalent to 130 (Attenuation 82dB typ) |
Coalition Chebyshev | 100,200,500,1k,2k,5k,10k,20k,50k,100k | Frequency setting logic: 4bit binary | ||
fc : cutoff frequency
Fixed frequency filter series
Select the filter characteristics that meet your needs from among the available filter characteristics, and specify the necessary items such as the cut-off (center) frequency before manufacturing.
| Type name | type | degree | Attenuation gradient [dB/oct] |
Characteristic | Cutoff frequency (center frequency) [Hz] |
List price (yen) Body (excluding tax) |
product image |
|---|---|---|---|---|---|---|---|
| CF-3BL | LPF | tertiary | 18 | Butterworth | Can be specified in the range of 1~1M | inquiry |  |
| CF-4BL | LPF | quaternary | 24 | Butterworth | |||
| CF-5BL | LPF | Fifth | 30 | Butterworth | |||
| CF-6BL | LPF | Sixth order | 36 | Butterworth | |||
| CF-7BL | LPF | seventh | 42 | Butterworth | |||
| CF-8BL | LPF | 8th order | 48 | Butterworth | |||
| CF-3LL | LPF | tertiary | 18 | vessel | |||
| CF-4LL | LPF | quaternary | 24 | vessel | |||
| CF-5LL | LPF | Fifth | 30 | vessel | |||
| CF-6LL | LPF | Sixth order | 36 | vessel | |||
| CF-7LL | LPF | seventh | 42 | vessel | |||
| CF-8LL | LPF | 8th order | 48 | vessel | |||
| CF-6FL | LPF | Sixth order | 60,80,100 | Coalition Chebyshev | Can be specified in the range of 10~1M | ||
| CF-7FL | LPF | seventh | 84,128,260 | Coalition Chebyshev | Can be specified in the range of 10 to 1M (up to 100kHz depending on the attenuation slope, ripple, etc.) | ||
| CF-8FL | LPF | 8th order | 100,135,274 | Coalition Chebyshev | |||
| CF-3BH | HPF | tertiary | 18 | Butterworth | Can be specified in the range of 1~50k | ||
| CF-4BH | HPF | quaternary | 24 | Butterworth | |||
| CF-5BH | HPF | Fifth | 30 | Butterworth | |||
| CF-6BH | HPF | Sixth order | 36 | Butterworth | |||
| CF-7BH | HPF | seventh | 42 | Butterworth | |||
| CF-8BH | HPF | 8th order | 48 | Butterworth | |||
| CF-6FH | HPF | Sixth order | 60,80,100 | Coalition Chebyshev | Can be specified in the range of 10~50k | ||
| CF-7FH | HPF | seventh | 84,128,260 | Coalition Chebyshev | |||
| CF-8FH | HPF | 8th order | 100,135,274 | Coalition Chebyshev | |||
| CF-2BP | BPF | 4 (secondary pair) | 12 | - | Can be specified in the range of 1~1M | ||
| CF-3BP | BPF | 6 (cubic pair) | 18 | - | |||
| CF-4BP | BPF | 8 (quaternary pair) | 24 | - | Can be specified in the range of 1~100k | ||
| CF-5BP | BPF | 10 (fifth pair) | 30 | - | |||
| CF-6BP | BPF | 12 (6th order pair) | 36 | - | |||
| CF-1BE | BEF | 2 (primary pair) | 26 or more | - | Can be specified in the range of 1~50k | ||
| CF-2BE | BEF | 4 (secondary pair) | 40 or more | - | |||
| CF-3BE | BEF | 6 (cubic pair) | 60 or more | - | |||
| CF-4BE | BEF | 8 (quaternary pair) | over 70 | - |
Application specific filters
| type | remarks | List price (yen) Body (excluding tax) |
product image |
| 50/60Hz noise rejection | Product example SD-1BE Band elimination filter | Please contact us |  |
| For 200B/S communication | Product example CF-4FPA BPF for transmission and reception | ||
| for speech synthesis | Product example SF-8FLC-1 (CCITT REC.G.722) |