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| EMI Filters (KNF Series) Features * Distributed constant type LC filter. Prevents ringing caused by circuit impedance. Suitable for high speed digital circuits and visual line circuits. * Stable noise attenuation over wide frequency ranges. * Low profile (T=0.85mm max.) suitable for miniature electronic equipments. * First class auto-placement How to Order KNF 21 050 - W 3 q w e rt (EIAJ) (3216) (2012) 200 400 200MHz 400MHz qSeries wSize EIA 32 :1206 21 :0805 eFrequency 025 050 100 25MHz 50MHz 100MHz Applications * PCs, Laser Printers, Cellular Phone, Clock Data Lines for LCD Display * High Speed Video Signal Circuits and interface circuits * High Speed Digital Circuits * Anti-Noise Solution Achieves effective noise suppression in noisy high speed circuits without signal waveform distortion rTaping Direction (See Table 1) W: Standard tQuantity per Reel 3 3000pcs Dimensions L Input Direction Mark (Unit : mm) Specification Part Number KNF32025 Cut off Freq. (MHz) 25MHz 50MHz 100MHz 200MHz 25MHz 50MHz 100MHz 200MHz 400MHz Capacitance 20dB Attenuation Rated (+50/-20%) current(mA) (Typical) (pF) 235pF 130pF 65pF 33pF 235pF 130pF 65pF 33pF 17pF 200- 600MHz 350- 850MHz 200mA 450- 950MHz 700-1200MHz 200- 600MHz 350- 850MHz 450- 950MHz 700-1200MHz 900-1400MHz 150mA 25VDC Rated voltage(VDC) W IN OUT KNF32050 KNF32100 KNF32200 KNF21025 T GND Q KNF32 L W T Q 3.200.20 1.600.20 1.000.20 0.600.30 KNF21 2.000.20 1.250.20 0.800.15 0.400.30 KNF21200 KNF21400 KNF21050 KNF21100 Cut off Frequency at Attenuation typical 3dB, Max 6dB Operating Temperature: -25 to 85(C) Frequency Characteristics KNF32 Series 10 0 KNF21 Series 10 0 Attenuation(dB) Attenuation(dB) IN OUT -10 KNF32200 -20 -30 -40 -50 KNF32100 KNF32050 KNF32025 -10 -20 -30 -40 -50 KNF21025 KNF21050 KNF21100 KNF21200 KNF21400 GND Equivalent Circuit 1 10 100 1000 10000 1 10 100 1000 10000 Frequency(MHz) Frequency(MHz) EMI Filters (KNF Series) * Stable attenuation against impedance change * Good impedance matching without ringing on distortion even at the time of IC ON/OFF and pattern layout change Output wave form(Clock frequency 25MHz) R LC filter KNF21100 1M Test circuit LVC74 filter LVC04 25MHz R 300 Test point KNF series Output wave form LC filter Output wave form No filter Output wave form * Wide attenuation up to high frequency range without distortion Wide attenuation bandwidth KNF21100 120 Spectrum att.(dBuV) LC Filter (T-Type) 120 Spectrum att.(dBuV) 100 80 60 40 25 125 225 325 425 525 625 725 825 925 Frequency(MHz) Original Test circuit LVC74 filter 50mm 25MHz Test point 100 80 60 40 25 125 225 325 425 525 625 725 825 925 Frequency(MHz) Original Filter passed Filter passed Recommended land pattern Through Hole D Resist (Unit : mm) Packaging specification (Table 1) * Taping (3,000/reel) Taping Direction(W) (Unit : mm) Q W U R S W(Standard) P C T Conductor Resist 4.0 Direction of Feed T W R 1.00 1.40 C P Q S D 0.3-0.4 0.50 U 2.00 2.40 KNF21 3.20 2.30 KNF32 4.40 3.00 1.20 0.80 2.50 1.20 0.40 0.60 0.60 0.60 8.0 |
Price & Availability of KNF21025
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