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Ang pangunahing tungkulin nito ay palakasin ang input signal habang binabawasan ang ingay na pumapasok upang mapabuti ang sensitivity at reception performance ng sistema.
1. Mababang ingay: Binabawasan ng pangkalahatang disenyo ng mga sistema ng low noise amplifier ang pinagmumulan at transmisyon ng ingay sa circuit, na epektibong binabawasan ang ingay sa circuit.
2. Broadband: Ang mga sistema ng microwave low noise amplifier ay karaniwang nangangailangan ng operasyon sa malawak na saklaw ng frequency.
3. Mataas na gain: Ang pangkalahatang disenyo ng mga millimeter wave low noise amplifier system ay nagbibigay ng adjustable gain at high gain.
4. Mataas na input impedance: Ang mga sistema ng MM wave low noise amplifier ay karaniwang may mataas na input impedance, kaya hindi sila nakakabuo ng mga hindi kinakailangang electrical load sa pinagmumulan ng input signal.
5. Mababang konsumo ng kuryente: Napakaliit ng gumaganang kuryente ng mga sistema ng low noise amplifier, kaya't mababa rin ang konsumo ng kuryente ng mga ito.
1. Komunikasyon at pagsasahimpapawid sa telebisyon: Maaaring gamitin ang sistemang high frequency low noise amplifiers upang mapabuti ang kalidad at distansya ng mga natatanggap na signal.
2. Komunikasyon at radyo gamit ang satellite: Maaaring gamitin ang sistemang EMC low noise amplifiers upang pangasiwaan ang kahinaan at ingay ng mga natatanggap na signal.
3. Hard drive at optical drive: Maaaring gamitin ang sistemang microwave low noise amplifiers upang mapabuti ang katatagan at katumpakan ng pagbabasa at pagsusulat ng data.
4. Kagamitang medikal: Maaaring gamitin ang sistemang Millimeter wave low noise amplifiers upang iproseso ang mga panloob na signal o matukoy ang mga instrumento.
5. Mga sensor at detektor: Ang sistemang MM wave low noise amplifier ay maaaring gamitin upang palakasin ang mga napakahinang signal, tulad ng astronomiya, spectroscopy, particle physics at iba pang larangan.
QualwaveNagbibigay ng mga Low Noise Amplifier System mula DC hanggang 67GHz, at ang antas ng ingay ay maaaring kasingbaba ng 0.8dB. Ang minimum na gain ay 12dB at ang maximum na input na VSWR ay 3:1. Nag-aalok kami ng iba't ibang low noise amplifier system upang matugunan ang lahat ng iyong pangangailangan sa mga bahagi ng RF, microwave, at millimeter wave low noise amplifier system.

Numero ng Bahagi | Dalas(GHz, Min.) | Dalas(GHz, Max.) | Pigura ng Ingay(dBm, Pinakamataas) | Lakas ng Pag-output(dBm, Min.) | Makakuha(dB, Min.) | Pagkuha ng Kapatagan(±dB, tipikal) | Boltahe(VDC) | VSWR(Max.) | Oras ng Pangunguna(mga linggo) |
|---|---|---|---|---|---|---|---|---|---|
| QLAS-9K-20000-18-25 | 9K | 20 | 2.5(tipikal) | 11(tipikal) | 18 (tipikal) | 1 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-0.01-15000-12-70 | 0.00001 | 15 | 7 | 12 | 12 | 3 | 220 | 2 | 2~8 |
| QLAS-0.1-40000-14-30 | 0.0001 | 40 | 3.0(tipikal) | 15 (tipikal) | 14 (tipikal) | 1 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-0.1-40000-27-30 | 0.0001 | 40 | 3.0(tipikal) | 13 (tipikal) | 27(tipikal) | 1.5 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-10-8000-40-20 | 0.01 | 8 | 2 | 18 | 40 | 3 | 220 | 2 | 2~8 |
| QLAS-10-18000-50-40 | 0.01 | 18 | 4 (0.2~18GHz) | 10 | 50 | 3 | 220 | 2.5 | 2~8 |
| QLAS-20-6000-35-15 | 0.02 | 6 | 1.5 (tipikal) | 19(tipikal) | 35 (tipikal) | 3.5 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-20-6000-40-15-L | 0.02 | 6 | 1.5 (tipikal) | 19(tipikal) | 40 (tipikal) | 2 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-20-6000-45-15 | 0.02 | 6 | 1.5 (tipikal) | 19(tipikal) | 45 (tipikal) | 2.5 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-30-40000-54-60 | 0.03 | 40 | 6 (tipikal) | 10 | 54 | 3 (pinakamataas) | 220 | 1.8(tipikal) | 2~8 |
| QLAS-50-4000-20-15 | 0.05 | 4 | 1.5 (tipikal) | 20 (tipikal) | 20 (tipikal) | 1.5 | 80~270 | 1.5 | 2~8 |
| QLAS-50-4000-40-15 | 0.05 | 4 | 1.5 (tipikal) | 20 (tipikal) | 40 (tipikal) | 3 (pinakamataas) | 85~265 | 1.5 (tipikal) | 2~8 |
| QLAS-50-6000-23-15 | 0.05 | 6 | 1.5 (tipikal) | 20 (tipikal) | 23 (tipikal) | 1.5 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-100-6000-16-10 | 0.1 | 6 | 1(tipikal) | 20 (tipikal) | 16 (tipikal) | 10 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-100-6000-23-15 | 0.1 | 6 | 1.5 (tipikal) | 20 (tipikal) | 23 (tipikal) | 1.5 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-100-6000-30-10 | 0.1 | 6 | 1(tipikal) | 22(tipikal) | 30 (tipikal) | 20 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-100-6000-35-15 | 0.1 | 6 | 1.5 (tipikal) | 19(tipikal) | 35 (tipikal) | 3.5 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-100-6000-40-15-L | 0.1 | 6 | 1.5 (tipikal) | 19(tipikal) | 40 (tipikal) | 2 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-100-6000-45-15 | 0.1 | 6 | 1.5 (tipikal) | 19(tipikal) | 45 (tipikal) | 2.5 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-100-12000-15-30 | 0.1 | 12 | 3 (tipikal) | 18 (tipikal) | 15 (tipikal) | 1 | 85~265 | 1.6 (tipikal) | 2~8 |
| QLAS-100-12000-30-30 | 0.1 | 12 | 3 (tipikal) | 15 (tipikal) | 30 (tipikal) | 1.5 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-100-15000-45-22 | 0.1 | 15 | 2.2 | 5 | 45 | 2.5 | 220 | 1.5 | 2~8 |
| QLAS-100-18000-15-30 | 0.1 | 18 | 3 (tipikal) | 18 (tipikal) | 15 (tipikal) | 1 | 85~265 | 1.6 (tipikal) | 2~8 |
| QLAS-100-18000-30-30 | 0.1 | 18 | 3 (tipikal) | 15 (tipikal) | 30 (tipikal) | 1.5 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-100-18000-35-40 | 0.1 | 18 | 4 | 10 | 35 | 3 | 220 | 2.5 | 2~8 |
| QLAS-100-20000-20-20 | 0.1 | 20 | 2(tipikal) | 10(tipikal) | 20 (tipikal) | 0.5 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-100-20000-40-20 | 0.1 | 20 | 2(tipikal) | 10(tipikal) | 40 | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-100-26500-12-30 | 0.1 | 26.5 | 3 (tipikal) | 15 (tipikal) | 12 (tipikal) | 2.5 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-100-26500-30-55 | 0.1 | 26.5 | 5.5 | 20 | 30 | 3 | 220 | 2 | 2~8 |
| QLAS-400-8000-40-25 | 0.4 | 8 | 2.5 | 14 | 40 | 1.5 | 110 | 1.8 | 2~8 |
| QLAS-500-8000-20-25 | 0.5 | 8 | 2.5 | 20 | 20 | 2 | 220 | 2 | 2~8 |
| QLAS-500-18000-25-25 | 0.5 | 18 | 2.5(tipikal) | 16 (tipikal) | 25 | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-500-18000-50-25 | 0.5 | 18 | 2.5(tipikal) | 16 (tipikal) | 50 (tipikal) | 5 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-500-20000-25-25 | 0.5 | 20 | 2.5(tipikal) | 16 (tipikal) | 25 | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-500-20000-50-25 | 0.5 | 20 | 2.5(tipikal) | 16 (tipikal) | 50 (tipikal) | 5 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-600-4200-20-10 | 0.6 | 4.2 | 1(tipikal) | 20 (tipikal) | 20 (tipikal) | 2 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-600-4200-30-08 | 0.6 | 4.2 | 0.8(tipikal) | 21 (tipikal) | 30 (tipikal) | 20 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-600-4200-35-10 | 0.6 | 4.2 | 1(tipikal) | 21 (tipikal) | 35 | 20 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-700-8000-30-25 | 0.7 | 8 | 2.5 | 13 | 30 | 2 | 220 | 2 | 2~8 |
| QLAS-800-18000-25-35 | 0.8 | 18 | 3.5 | 13 | 25 | 2.5 | 220 | 2 | 2~8 |
| QLAS-1000-6000-23-15 | 1 | 6 | 1.5 (tipikal) | 20 (tipikal) | 23 (tipikal) | 1.5 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-1000-6000-30-20 | 1 | 6 | 2(tipikal) | 17(tipikal) | 30 | ±1 | 85~265 | 1.5 (tipikal) | 2~8 |
| QLAS-1000-12000-15-18 | 1 | 12 | 1.8(tipikal) | 17(tipikal) | 15 (tipikal) | 1 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-1000-12000-25-25 | 1 | 12 | 2.5(tipikal) | 16 (tipikal) | 25 | 1 | 85~265 | 1.5 (tipikal) | 2~8 |
| QLAS-1000-12000-30-20 | 1 | 12 | 2(tipikal) | 17(tipikal) | 30 | 1 | 85~265 | 1.6 (tipikal) | 2~8 |
| QLAS-1000-12000-45-20 | 1 | 12 | 2(tipikal) | 17(tipikal) | 45 (tipikal) | 2 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-1000-12000-50-25 | 1 | 12 | 2.5(tipikal) | 16 (tipikal) | 50 | 1.5 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-1000-12000-60-20 | 1 | 12 | 2(tipikal) | 17(tipikal) | 60 | 2 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-1000-18000-15-18 | 1 | 18 | 1.8(tipikal) | 17(tipikal) | 15 (tipikal) | 1 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-1000-18000-25-25 | 1 | 18 | 2.5(tipikal) | 16 (tipikal) | 25 | 1 | 85~265 | 1.5 (tipikal) | 2~8 |
| QLAS-1000-18000-30-20 | 1 | 18 | 2(tipikal) | 17(tipikal) | 27, 30 (karaniwang) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-1000-18000-30-25-L | 1 | 18 | 2.5(tipikal) | 17(tipikal) | 38 (tipikal) | 1.5 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-1000-18000-45-20 | 1 | 18 | 2(tipikal) | 17(tipikal) | 45 (tipikal) | 2 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-1000-18000-50-25 | 1 | 18 | 2.5(tipikal) | 16 (tipikal) | 50 | 2 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-1000-18000-60-20 | 1 | 18 | 2(tipikal) | 17(tipikal) | 60 (tipikal) | 3 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-1000-20000-25-25 | 1 | 20 | 2.5(tipikal) | 16 (tipikal) | 25 | 1 | 85~265 | 1.5 (tipikal) | 2~8 |
| QLAS-1000-20000-50-25 | 1 | 20 | 2.5(tipikal) | 16 (tipikal) | 50 (tipikal) | 3 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-1000-40000-40-50 | 1 | 40 | 5 | 16(Psat) | 40 | 4.5 | 220 | 3 | 2~8 |
| QLAS-2000-6000-38-10 | 2 | 6 | 1(tipikal) | 17(tipikal) | 38 (tipikal) | 1 | 85~265 | 1.4(tipikal) | 2~8 |
| QLAS-2000-6000-54-15 | 2 | 6 | 1.5 (tipikal) | 17(tipikal) | 54 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-2000-8000-23-13 | 2 | 8 | 1.3(tipikal) | 13 (tipikal) | 23 (tipikal) | 1 | 85~265 | 1.45(tipikal) | 2~8 |
| QLAS-2000-8000-38-11 | 2 | 8 | 1.1(tipikal) | 17(tipikal) | 38 (tipikal) | 1 | 85~265 | 1.6 (tipikal) | 2~8 |
| QLAS-2000-8000-54-15 | 2 | 8 | 1.5 (tipikal) | 17(tipikal) | 54 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-2000-12000-23-13 | 2 | 12 | 1.3(tipikal) | 14 (tipikal) | 23 (tipikal) | 1 | 85~265 | 1.45(tipikal) | 2~8 |
| QLAS-2000-12000-38-12 | 2 | 12 | 1.2(tipikal) | 17(tipikal) | 38 (tipikal) | 1 | 85~265 | 1.6 (tipikal) | 2~8 |
| QLAS-2000-12000-54-15 | 2 | 12 | 1.5 (tipikal) | 17(tipikal) | 54 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-2000-18000-24-15 | 2 | 18 | 1.5 (tipikal) | 14 (tipikal) | 24 (tipikal) | 1.5 | 85~265 | 1.45(tipikal) | 2~8 |
| QLAS-2000-18000-38-15 | 2 | 18 | 1.5 (tipikal) | 17(tipikal) | 38 (tipikal) | 1.5 | 85~265 | 1.6 (tipikal) | 2~8 |
| QLAS-2000-18000-38-20-L | 2 | 18 | 2.0(tipikal) | 17(tipikal) | 38 (tipikal) | 1 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-2000-18000-54-15 | 2 | 18 | 1.5 (tipikal) | 17(tipikal) | 54 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-2000-26500-25-40 | 2 | 26.5 | 4 | 8 | 25 | 2 | 220 | 1.8 | 2~8 |
| QLAS-2000-26500-48-50 | 2 | 26.5 | 5 | 10 | 48 | 4.5 | 220 | 2.5 | 2~8 |
| QLAS-4000-8000-23-13 | 4 | 8 | 1.3(tipikal) | 13 (tipikal) | 23 (tipikal) | 1 | 85~265 | 1.45(tipikal) | 2~8 |
| QLAS-4000-8000-40-11 | 4 | 8 | 1.1(tipikal) | 20 (tipikal) | 40 | 1 | 85~265 | 1.6 (tipikal) | 2~8 |
| QLAS-4000-8000-54-15 | 4 | 8 | 1.5 (tipikal) | 17(tipikal) | 54 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-4000-12000-23-13 | 4 | 12 | 1.3(tipikal) | 14 (tipikal) | 23 (tipikal) | 1 | 85~265 | 1.45(tipikal) | 2~8 |
| QLAS-4000-12000-38-12 | 4 | 12 | 1.2(tipikal) | 17(tipikal) | 38 (tipikal) | 1 | 85~265 | 1.6 (tipikal) | 2~8 |
| QLAS-4000-12000-54-15 | 4 | 12 | 1.5 (tipikal) | 17(tipikal) | 54 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-4000-18000-24-15 | 4 | 18 | 1.5 (tipikal) | 14 (tipikal) | 24 (tipikal) | 1.5 | 85~265 | 1.45(tipikal) | 2~8 |
| QLAS-4000-18000-38-15 | 4 | 18 | 1.5 (tipikal) | 17(tipikal) | 38 (tipikal) | 1.5 | 85~265 | 1.6 (tipikal) | 2~8 |
| QLAS-4000-18000-54-15 | 4 | 18 | 1.5 (tipikal) | 17(tipikal) | 54 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-6000-12000-23-13 | 6 | 12 | 1.3(tipikal) | 14 (tipikal) | 23 (tipikal) | 1 | 85~265 | 1.45(tipikal) | 2~8 |
| QLAS-6000-12000-38-12 | 6 | 12 | 1.2(tipikal) | 17(tipikal) | 38 (tipikal) | 1 | 85~265 | 1.6 (tipikal) | 2~8 |
| QLAS-6000-12000-54-15 | 6 | 12 | 1.5 (tipikal) | 17(tipikal) | 54 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-6000-18000-24-15 | 6 | 18 | 1.5 (tipikal) | 14 (tipikal) | 24 (tipikal) | 1.5 | 85~265 | 1.45(tipikal) | 2~8 |
| QLAS-6000-18000-38-15 | 6 | 18 | 1.5 (tipikal) | 17(tipikal) | 38 (tipikal) | 1.5 | 85~265 | 1.6 (tipikal) | 2~8 |
| QLAS-6000-18000-38-20-L | 6 | 18 | 2.0(tipikal) | 17(tipikal) | 38 (tipikal) | 1 | 85~265 | 1.8(tipikal) | 2~8 |
| QLAS-6000-18000-54-15 | 6 | 18 | 1.5 (tipikal) | 17(tipikal) | 54 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-6000-40000-45-35 | 6 | 40 | 3.5 | 10 | 45 | 2.5 | 220 | 2 | 2~8 |
| QLAS-6000-40000-55-35 | 6 | 40 | 3.5 | 10 | 55 | 3.5 | 220 | 2 | 2~8 |
| QLAS-8000-12000-23-13 | 8 | 12 | 1.3(tipikal) | 14 (tipikal) | 23 (tipikal) | 1 | 85~265 | 1.45(tipikal) | 2~8 |
| QLAS-8000-12000-38-12 | 8 | 12 | 1.2(tipikal) | 17(tipikal) | 38 (tipikal) | 1 | 85~265 | 1.6 (tipikal) | 2~8 |
| QLAS-8000-12000-54-15 | 4 | 18 | 1.5 (tipikal) | 17(tipikal) | 54 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-8000-18000-24-15 | 8 | 18 | 1.5 (tipikal) | 14 (tipikal) | 24 (tipikal) | 1.5 | 85~265 | 1.45(tipikal) | 2~8 |
| QLAS-8000-18000-38-15 | 8 | 18 | 1.5 (tipikal) | 17(tipikal) | 38 (tipikal) | 1.5 | 85~265 | 1.6 (tipikal) | 2~8 |
| QLAS-8000-18000-54-15 | 8 | 18 | 1.5 (tipikal) | 17(tipikal) | 54 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-8000-26500-15-35 | 8 | 26.5 | 3.5 | 8 | 15 | 1.5 | 220 | 1.5 | 2~8 |
| QLAS-8000-26500-40-65 | 8 | 26.5 | 6.5 | 18 | 40 | 2 | 220 | 2 | 2~8 |
| QLAS-12000-18000-24-15 | 12 | 18 | 1.5 (tipikal) | 14 (tipikal) | 24 (tipikal) | 1.5 | 85~265 | 1.45(tipikal) | 2~8 |
| QLAS-12000-18000-38-15 | 12 | 18 | 1.5 (tipikal) | 17(tipikal) | 38 (tipikal) | 1.5 | 85~265 | 1.6 (tipikal) | 2~8 |
| QLAS-12000-18000-54-15 | 12 | 18 | 1.5 (tipikal) | 17(tipikal) | 54 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-18000-26500-20-30 | 18 | 26.5 | 3 (tipikal) | 15 (tipikal) | 20 (tipikal) | 1 | 85~265 | 1.5 (tipikal) | 2~8 |
| QLAS-18000-26500-40-30 | 18 | 26.5 | 3 (tipikal) | 15 (tipikal) | 40 (tipikal) | 1.5 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-18000-26500-55-30 | 18 | 26.5 | 3 (tipikal) | 15 (tipikal) | 55 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-18000-40000-20-30 | 18 | 40 | 3 (tipikal) | 15 (tipikal) | 20 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-18000-40000-40-30 | 18 | 40 | 3 (tipikal) | 15 (tipikal) | 40 (tipikal) | 3.5 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-18000-40000-55-30 | 18 | 40 | 3 (tipikal) | 15 (tipikal) | 55 (tipikal) | 2.5 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-26500-40000-20-30 | 26.5 | 40 | 3 (tipikal) | 15 (tipikal) | 20 (tipikal) | 1 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-26500-40000-40-30 | 26.5 | 40 | 3 (tipikal) | 15 (tipikal) | 40 (tipikal) | 3.5 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-26500-40000-55-30 | 26.5 | 40 | 3 (tipikal) | 15 (tipikal) | 55 (tipikal) | 2.5 | 85~265 | 2(tipikal) | 2~8 |
| QLAS-40000-53000-40-50 | 40 | 53 | 5 | 10 | 40 | 2 | 220 | 2 | 2~8 |
| QLAS-40000-60000-35-70 | 40 | 60 | 7 | 20 | 35 | 2.5 | 220 | 2 | 2~8 |
| QLAS-50000-59000-40-55 | 50 | 59 | 5.5 | 10 | 40 | 1 | 220 | 2 | 2~8 |
| QLAS-57000-67000-30-50 | 57 | 67 | 5 | 10 | 30 | - | 220 | 2 | 2~8 |