 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| ? ? ? rev. 7 ? mutilayer chip bead meritek MCB series ? feature and applications ? effective emi protection ? low dc resistance ? high soldering heat resistance ? multiple size availability ? computers and peripheral equipment ? vcrs, television, pagers ? cellular phones ? digital communication equipment ? various electronics equipment ? circuit where a stable ground is unavailable ? ? p art n umbering s ystem MCB 03 y t y n 651 mutilayer chip bead size code 02 03 05 04 06 10 08 12 size 0402 0603 0805 1204 1206 1210 1808 1812 impedance tolerance code y value 25% packaging code t tape & reel design code y ui: 200 q ui: 75 (high speed signal) current h high current n general current impedance tolerance 090 110 451 9 ? 11 ? 450 ? ? construction ? ? ? ferrite substance (nio-cuo-zno-ferrite) ? silver electrode ? electrode (ag/cu/ni/sn) type size (inch) a b c d weight (g) (1000pcs) MCB02 0402 1.0 ? 0.10 0.50 ? 0.10 0.5 ? 0.10 0.1~0.35 2.6 MCB03 0603 1.6 ? 0.20 0.80 ? 0.15 0.8 ? 0.15 0.1~0.6 6.2 MCB05 0805 2.0 ? 0.20 1.25 ? 0.20 0.9 ? 0.20 0.2~0.8 10 MCB04 1204 3.2 ? 0.20 1.60 ? 0.20 1.1 ? 0.20 0.2~1.0 30 MCB06 1206 3.2 ? 0.20 1.60 ? 0.20 1.6 ? 0.20 0.2~1.0 42 MCB10 1210 3.2 ? 0.20 2.50 ? 0.20 1.3 ? 0.20 0.2~1.0 54 MCB08 1808 4.5 ? 0.25 1.60 ? 0.20 1.6 ? 0.20 0.2~1.0 60 MCB12 1812 4.5 ? 0.25 3.20 ? 0.20 1.5 ? 0.20 0.2~1.0 62 b a
? ? ? rev. 7 ? mutilayer chip bead meritek MCB series ? standard electrical specifications MCB02 standard type impedance ( ? ) ? tolerance test freq. (mhz) dcr ( ? ) max. rated current (ma) max. 6 25% 100 0.05 500 10 25% 100 0.05 500 30 25% 100 0.30 300 33 25% 100 0.30 300 40 25% 100 0.30 300 47 25% 100 0.40 300 60 25% 100 0.40 300 70 25% 100 0.40 300 75 25% 100 0.40 300 80 25% 100 0.40 300 90 25% 100 0.50 300 100 25% 100 0.50 300 120 25% 100 0.50 300 150 25% 100 0.50 300 220 25% 100 0.50 300 240 25% 100 0.50 300 300 25% 100 0.80 300 330 25% 100 0.80 300 480 25% 100 0.80 300 600 25% 100 1.00 300 1000 25% 100 1.50 100 1500 25% 100 2.00 60 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? rev. 7 ? mutilayer chip bead meritek MCB series ? MCB03 standard type impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 6 25% 100 0.05 500 7 25% 100 0.05 500 10 25% 100 0.05 500 11 25% 100 0.05 500 15 25% 100 0.08 500 17 25% 100 0.08 500 19 25% 100 0.08 500 20 25% 100 0.10 400 22 25% 100 0.10 400 25 25% 100 0.10 400 26 25% 100 0.10 400 30 25% 100 0.10 400 31 25% 100 0.10 400 32 25% 100 0.10 400 33 25% 100 0.10 400 40 25% 100 0.10 400 47 25% 100 0.10 400 50 25% 100 0.10 400 52 25% 100 0.10 400 55 25% 100 0.10 400 56 25% 100 0.10 400 60 25% 100 0.10 400 68 25% 100 0.15 400 70 25% 100 0.15 400 75 25% 100 0.15 400 80 25% 100 0.15 400 90 25% 100 0.20 400 100 25% 100 0.20 400 120 25% 100 0.25 400 140 25% 100 0.25 300 150 25% 100 0.30 200 180 25% 100 0.30 200 200 25% 100 0.30 200 220 25% 100 0.30 200 240 25% 100 0.40 200 300 25% 100 0.40 200 330 25% 100 0.50 200 400 25% 100 0.50 200 420 25% 100 0.50 200 450 25% 100 0.50 200 470 25% 100 0.50 200 500 25% 100 0.50 200 600 25% 100 0.50 200 750 25% 100 0.70 200 800 25% 100 0.70 200 1000 25% 100 0.70 200 1200 25% 100 1.00 50 1500 25% 100 1.00 50 1700 25% 100 1.20 50 2000 25% 100 1.20 50 2200 25% 100 1.20 50 2500 25% 100 1.30 50 2700 25% 100 1.30 50 ? ? ? ? ? ? rev. 7 ? mutilayer chip bead meritek MCB series MCB05 standard type impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 5 25% 100 0.10 600 7 25% 100 0.10 600 9 25% 100 0.10 600 10 25% 100 0.10 600 11 25% 100 0.10 600 12 25% 100 0.10 600 15 25% 100 0.10 600 17 25% 100 0.10 600 19 25% 100 0.10 600 22 25% 100 0.10 600 26 25% 100 0.10 600 28 25% 100 0.10 600 30 25% 100 0.10 600 31 25% 100 0.10 600 32 25% 100 0.10 600 33 25% 100 0.10 500 39 25% 100 0.10 500 40 25% 100 0.10 500 42 25% 100 0.10 500 47 25% 100 0.10 500 50 25% 100 0.10 500 52 25% 100 0.15 500 56 25% 100 0.15 500 60 25% 100 0.15 500 70 25% 100 0.15 500 75 25% 100 0.15 500 80 25% 100 0.15 500 90 25% 100 0.15 500 95 25% 100 0.15 500 100 25% 100 0.25 300 120 25% 100 0.25 300 150 25% 100 0.25 300 180 25% 100 0.30 300 200 25% 100 0.30 300 220 25% 100 0.3 300 240 25% 100 0.3 300 300 25% 100 0.3 300 330 25% 100 0.3 300 400 25% 100 0.3 300 420 25% 100 0.3 300 430 25% 100 0.4 300 450 25% 100 0.4 300 470 25% 100 0.4 300 500 25% 100 0.4 300 600 25% 100 0.4 300 680 25% 100 0.4 300 750 25% 100 0.5 200 1000 25% 100 0.5 200 1200 25% 100 0.6 200 1500 25% 100 0.6 200 2000 25% 100 0.7 200 2200 25% 100 0.7 200 2500 25% 100 0.7 200 2700 25% 100 0.7 200 ? ? ? ? ? ? ? rev. 7 ? mutilayer chip bead meritek MCB series MCB04 standard type impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 8 25% 100 0.05 600 9 25% 100 0.05 600 11 25% 100 0.05 600 17 25% 100 0.05 600 19 25% 100 0.05 600 22 25% 100 0.05 600 24 25% 100 0.05 600 26 25% 100 0.05 600 30 25% 100 0.05 600 31 25% 100 0.05 600 32 25% 100 0.05 600 33 25% 100 0.05 600 35 25% 100 0.10 500 47 25% 100 0.10 500 50 25% 100 0.10 500 52 25% 100 0.10 500 60 25% 100 0.10 500 70 25% 100 0.10 500 75 25% 100 0.15 500 80 25% 100 0.15 500 90 25% 100 0.15 500 100 25% 100 0.15 500 120 25% 100 0.15 500 150 25% 100 0.15 500 180 25% 100 0.20 400 200 25% 100 0.20 400 220 25% 100 0.20 400 240 25% 100 0.20 400 300 25% 100 0.20 400 400 25% 100 0.20 400 470 25% 100 0.20 400 500 25% 100 0.20 400 600 25% 100 0.30 400 700 25% 100 0.40 200 1000 25% 50 0.40 200 1200 25% 50 0.40 200 1500 25% 50 0.45 200 2000 25% 30 0.60 200 2700 25% 30 0.60 200 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? rev. 7 ? mutilayer chip bead meritek MCB series MCB06 standard type impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 25 25% 100 0.10 500 60 25% 100 0.20 500 70 25% 100 0.20 500 MCB10 standard type impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 32 25% 100 0.20 500 60 25% 100 0.20 500 90 25% 100 0.20 500 120 25% 100 0.20 500 ? MCB08 standard type impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 33 25% 100 0.20 600 50 25% 100 0.20 600 60 25% 100 0.20 600 80 25% 100 0.20 600 90 25% 100 0.30 500 100 25% 100 0.30 500 150 25% 100 0.30 500 170 25% 100 0.30 500 ? MCB12 standard type impedance ? ( ) ? tolerance test ? frequency ? (mhz) ? dcr ? ( ) ? max. ? rated ? current ? (ma) ? max. ? 70 25% 100 0.30 500 120 25% 100 0.30 500 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? rev. 7 ? mutilayer chip bead meritek MCB series standard electrical specificat ions (for high current use) ? ? MCB02 high current type impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 10 25% 100 0.030 1000 ? MCB03 high current type impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 10 25% 100 0.020 4000 11 25% 100 0.020 4000 15 25% 100 0.030 3000 17 25% 100 0.030 3000 19 25% 100 0.030 3000 20 25% 100 0.030 3000 22 25% 100 0.030 3000 25 25% 100 0.030 3000 30 25% 100 0.030 3000 31 25% 100 0.030 3000 32 25% 100 0.035 3000 33 25% 100 0.035 3000 40 25% 100 0.035 3000 47 25% 100 0.040 3000 50 25% 100 0.040 3000 56 25% 100 0.040 3000 60 25% 100 0.040 3000 68 25% 100 0.050 2500 70 25% 100 0.050 2500 75 25% 100 0.050 2500 80 25% 100 0.050 2500 90 25% 100 0.050 2500 100 25% 100 0.050 2500 120 25% 100 0.080 2500 150 25% 100 0.085 2000 180 25% 100 0.090 2000 200 25% 100 0.095 2000 220 25% 100 0.100 2000 240 25% 100 0.120 1500 300 25% 100 0.120 1500 330 25% 100 0.120 1500 400 25% 100 0.120 1500 450 25% 100 0.150 1500 470 25% 100 0.150 1500 500 25% 100 0.150 1500 600 25% 100 0.200 1000 700 25% 100 0.250 800 750 25% 100 0.250 800 800 25% 100 0.250 800 1000 25% 100 0.250 800 1500 25% 100 0.400 500 ? ? ? ? rev. 7 ? mutilayer chip bead meritek MCB series MCB05 high current type ? impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 11 25% 100 0.010 6000 13 25% 100 0.020 5000 15 25% 100 0.020 5000 17 25% 100 0.020 5000 19 25% 100 0.020 4000 22 25% 100 0.020 4000 26 25% 100 0.020 4000 28 25% 100 0.020 4000 30 25% 100 0.020 4000 31 25% 100 0.020 4000 32 25% 100 0.020 4000 39 25% 100 0.020 3000 40 25% 100 0.020 3000 42 25% 100 0.025 3000 50 25% 100 0.025 3000 60 25% 100 0.030 3000 70 25% 100 0.040 3000 75 25% 100 0.040 3000 80 25% 100 0.040 3000 90 25% 100 0.040 3000 100 25% 100 0.040 3000 120 25% 100 0.040 3000 130 25% 100 0.050 2500 150 25% 100 0.050 2500 180 25% 100 0.050 2500 200 25% 100 0.050 2500 220 25% 100 0.080 2000 240 25% 100 0.080 2000 250 25% 100 0.080 2000 300 25% 100 0.080 2000 330 25% 100 0.080 2000 390 25% 100 0.100 2000 400 25% 100 0.100 2000 450 25% 100 0.100 2000 470 25% 100 0.100 2000 500 25% 100 0.100 2000 600 25% 100 0.100 2000 750 25% 100 0.120 1500 1000 25% 100 0.120 1500 1500 25% 100 0.300 1000 ? ? ? ? ? ? ? ? ? ? rev. 7 ? mutilayer chip bead meritek MCB series ? MCB04 high current type ? impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 7 25% 100 0.015 6000 8 25% 100 0.015 6000 11 25% 100 0.015 6000 19 25% 100 0.015 6000 26 25% 100 0.015 6000 30 25% 100 0.015 4000 31 25% 100 0.015 4000 32 25% 100 0.015 4000 35 25% 100 0.015 4000 40 25% 100 0.015 4000 42 25% 100 0.015 4000 48 25% 100 0.020 4000 50 25% 100 0.020 4000 52 25% 100 0.020 4000 60 25% 100 0.020 4000 68 25% 100 0.020 4000 70 25% 100 0.020 4000 75 25% 100 0.025 3000 80 25% 100 0.025 3000 90 25% 100 0.030 3000 100 25% 100 0.030 2500 120 25% 100 0.030 2500 150 25% 100 0.040 2000 200 25% 100 0.050 2000 220 25% 100 0.050 2000 300 25% 100 0.060 2000 330 25% 100 0.060 2000 390 25% 100 0.060 2000 400 25% 100 0.100 2000 500 25% 100 0.100 2000 600 25% 100 0.100 2000 1000 25% 50 0.150 1200 1200 25% 50 0.180 1000 1500 25% 50 0.200 800 ? ? ? ? rev. 7 ? mutilayer chip bead meritek MCB series MCB10 high current type ? impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 19 25% 100 0.025 4000 32 25% 100 0.025 4000 60 25% 100 0.025 4000 90 25% 100 0.025 3000 ? ? MCB08 high current type ? impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 19 25% 100 0.020 6000 40 25% 100 0.020 6000 50 25% 100 0.020 6000 60 25% 100 0.020 5000 70 25% 100 0.025 5000 75 25% 100 0.025 5000 80 25% 100 0.025 4000 90 25% 100 0.100 2000 100 25% 100 0.100 2000 150 25% 100 0.100 2000 190 25% 100 0.100 2000 300 25% 100 0.100 2000 470 25% 100 0.100 2000 600 25% 100 0.100 2000 850 25% 100 0.100 2000 1000 25% 100 0.100 2000 1300 25% 100 0.100 2000 ? MCB12 high current type ? impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 19 25% 100 0.030 6000 30 25% 100 0.030 6000 47 25% 100 0.030 6000 50 25% 100 0.030 6000 60 25% 100 0.030 6000 70 25% 100 0.030 6000 80 25% 100 0.030 4000 90 25% 100 0.030 4000 120 25% 100 0.030 4000 125 25% 100 0.030 4000 150 25% 100 0.030 4000 190 25% 100 0.030 4000 ? ? ? ? ? ? ? rev. 7 ? mutilayer chip bead meritek MCB series standard electrical specifications (for high speed signals use) ? ? MCB02 high speed signals type ? impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 6 25% 100 0.08 300 10 25% 100 0.10 300 22 25% 100 0.25 300 26 25% 100 0.25 300 30 25% 100 0.25 300 40 25% 100 0.25 350 75 25% 100 0.30 300 80 25% 100 0.30 300 100 25% 100 0.40 300 120 25% 100 0.40 300 220 25% 100 0.60 200 ? MCB03 high speed signals type ? impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 6 25% 100 0.05 500 7 25% 100 0.05 400 10 25% 100 0.07 400 19 25% 100 0.20 300 20 25% 100 0.20 300 22 25% 100 0.20 300 30 25% 100 0.20 300 40 25% 100 0.20 300 47 25% 100 0.20 300 50 25% 100 0.25 300 60 25% 100 0.25 300 68 25% 100 0.25 300 70 25% 100 0.25 300 75 25% 100 0.25 300 80 25% 100 0.25 300 100 25% 100 0.30 300 120 25% 100 0.30 300 130 25% 100 0.30 300 140 25% 100 0.30 300 150 25% 100 0.30 200 160 25% 100 0.30 200 180 25% 100 0.35 200 200 25% 100 0.35 200 220 25% 100 0.35 200 240 25% 100 0.35 200 300 25% 100 0.40 200 400 25% 100 0.50 200 420 25% 100 0.50 200 470 25% 100 0.50 200 480 25% 100 0.50 200 600 25% 100 0.50 200 1000 25% 100 0.60 100 1200 25% 100 0.60 100 1500 25% 100 0.70 100 1800 25% 100 0.80 100 2200 25% 100 1.00 50 2500 25% 100 1.50 50 ? ? ? ? ? ? rev. 7 ? mutilayer chip bead meritek MCB series MCB05 high speed signals type ? impedance ( ? ) tolerance test frequency (mhz) dc resistance ( ? ) max. rated current (ma) max. 5 25% 100 0.07 800 6 25% 100 0.07 800 7 25% 100 0.10 700 11 25% 100 0.10 700 26 25% 100 0.15 600 30 25% 100 0.15 600 32 25% 100 0.15 600 40 25% 100 0.15 500 60 25% 100 0.15 500 70 25% 100 0.15 500 75 25% 100 0.15 500 90 25% 100 0.15 500 100 25% 100 0.20 400 120 25% 100 0.20 400 150 25% 100 0.20 400 170 25% 100 0.30 400 200 25% 100 0.30 300 220 25% 100 0.30 300 240 25% 100 0.30 300 300 25% 100 0.30 300 400 25% 100 0.30 300 420 25% 100 0.30 300 470 25% 100 0.35 200 500 25% 100 0.35 200 600 25% 100 0.35 200 750 25% 100 0.40 200 1000 25% 100 0.40 200 1200 25% 100 0.45 200 1500 25% 100 0.45 200 2000 25% 100 0.50 200 2200 25% 100 0.50 200 2500 25% 100 0.60 200 2700 25% 100 0.60 200 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? rev. 7 ? mutilayer chip bead meritek MCB series MCB04 high speed signals type ? impedance ( ? ) tolerance test frequency (mhz) dcr ( ? ) max. rated current (ma) max. 15 25% 100 0.15 600 17 25% 100 0.15 600 19 25% 100 0.15 600 30 25% 100 0.15 600 32 25% 100 0.15 600 50 25% 100 0.15 500 60 25% 100 0.15 500 80 25% 100 0.15 500 90 25% 100 0.15 500 120 25% 100 0.20 400 150 25% 100 0.20 400 200 25% 100 0.25 300 220 25% 100 0.30 300 300 25% 100 0.30 300 350 25% 100 0.30 300 400 25% 100 0.30 300 600 25% 100 0.35 300 1000 25% 100 0.40 200 1200 25% 100 0.40 200 1500 25% 100 0.45 200 ? ? soldering condition ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ir reflow soldering wave soldering (flow soldering) (1)time of ir reflow soldering at maximum temperature point 260 ? c 10s (2)time of wave soldering at maximum temperature point 260 ? c 10s (3)time of soldering iron at maximum temperature point 410 ? c 5s ? ? ? ? ? ? ? ? rev. 7 ? mutilayer chip bead meritek MCB series environmental characteristics electrical performance test item specification test methods impedance refer to standard electrical spec. hp4291b dcr agilent 34401a mechanical performance test item specification test methods flexure strength the forces applied on the right conditions must not damage the terminal electrode and the ferrite test device shall be soldered on the substrate substrate dimension:100x40x1.6mm deflection: 2.0mm keeping time: 30sec for 0402, substrate dimension is 100400.8mm vibration test device shall be soldered on the substrate oscillation frequency : 10 to 55 to 10hz for 1min amplitude : 1.5mm time : 2hrs for each axis (x,y&z), total 6hrs resistance to soldering heat appearance: no damage more than 75% of the terminal electrode should be covered with solder impedance: within 30% of initial value pre-heating: 150 , 1min solder temperature: 2605 immersion time: 101sec solderability the electrodes shall be at least 90% covered with new solder coating pre-heating: 150 , 1min solder temperature: 2455 immersion time: 41sec terminal strength test 0402 series : R 0.2kg 0603series : R 0.5kg 0805 series : R 1.0kg other series : R 2.0kg test device shall be soldered on the substrate temperature cycle appearance: no damage impedance: within30% of initial value one cycle: one cycle/step1: -553 for 30min step2: 252 for 3.0min step3:1253 for 30min step4:252 for 3.0min total: 100cycles measured after exposure in the room condition for 24hrs humidity resistance temperature: 402 relative humidity: 90 ~ 95% time: 1000hrs measured after exposure in the room condition for 24hrs high temperature resistance temperature: 1253 relative humidity : 0% applied current: rated current time: 1000hrs measured after exposure in the room condition for 24hrs low temperature resistance temperature: -553 tr elative humidity : 0% time: 1000hrs measured after exposure in the room condition for 24hrs ? operating temperature: -55 ( ~ 125 ( storage temperature: 253c; humidity < 80%rh ? ? ? ? ? ? rev. 7 ? mutilayer chip bead meritek MCB series ? packaging ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? type tape dimensions reel dimensions recommended pattern quantity (ea) a b t w p f k tape type a b c d a b c MCB02 0.65 1.15 0.7 8.0 2.0 3.5 - b 178 60 10 2 0.4 1.2 ~ 1.4 0.4 10000 MCB03 1.10 1.85 0.95 8.0 4.0 3.5 - b 178 60 10 2 0.8 2.4 ~ 3.4 0.6 4000 MCB05 1.58 2.42 0.95 8.0 4.0 3.5 - b 178 60 10 2 1.2 3.0 ~ 4.0 1.0 4000 MCB03 1.05 1.95 1.05 8.0 4.0 3.5 0.23 a 178 60 10 2 0.8 2.4 ~ 3.4 0.6 4000 MCB05 1.42 2.25 1.04 8.0 4.0 3.5 0.22 a 178 60 10 2 1.2 3.0 ~ 4.0 1.0 4000 MCB04 1.88 3.50 1.27 8.0 4.0 3.5 0.2 a 178 60 10 2 2.0 4.2 ~ 5.2 1.2 3000 MCB06 1.88 3.64 1.90 8.0 4.0 3.5 0.2 a 178 60 10 2 2.0 4.2 ~ 5.2 1.2 2000 MCB10 2.77 3.42 1.65 8.0 4.0 3.5 0.2 a 178 60 10 2 2.0 5.5 ~ 6.5 1.8 2000 MCB08 1.88 4.95 1.90 12 4.0 5.5 0.3 a 178 60 14 2 3.0 5.5 ~ 6.5 1.2 2000 MCB12 3.66 4.95 1.85 12 8.0 5.5 0.3 a 178 60 14 2 3.0 5.5 ~ 6.5 2.4 1000 ? |
Price & Availability of MCB
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |