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Chip Resistor

 

Chip Resistor - CR Chip Resistor 厚膜貼片電阻

PDF File Thick Film Chip Resistor - CR Series

GENERAL ELECTRICAL SPECIFICATION
Type Size Rated Power Maximum Voltage Resistance Tolerance T.C.R. Jumper Rated
at 70 Working Overload (Ω) (ppm/) Current
CR01 0201 0.05W 25V 50V 10R - 1M ±1%,±2%,±5%. ±200 0.5A
CR02 0402 0.063W 50V 100V 1R - 9.9R ±1%,±2%,±5%. (Low ohm)1 ±400 1A
10R ~ 990R ±1%,±2%,±5%. ±300
10R~1M ±0.1%,± 0.5% (Precision)2 ±200
1K~10M ±1%,±2%,±5%. ±200
CR03 0603 0.1W 50V 100V 1R - 9.9R ±1%,±2%,±5%. (Low ohm)1 ±400
10R~1M ±0.1%,± 0.5% (Precision)2 ±100
10R~10M ± 5% ±200
10R~10M ±1%,±2%. ±100
CR05 0805 0.125W 150V 300V 1R - 9.9R ±1%,±2%,±5%. (Low ohm)1 ±400
10R~1M ±0.1%,± 0.5% (Precision)2 ±100
10R~10M ± 5% ±200
10R~10M ±1%,±2%. ±100
CR06 1206 0.25W 200V 400V 1R - 9.9R ±1%,±2%,±5%. (Low ohm)1 ±400 2A
10R~1M ±0.1%,± 0.5% (Precision)2 ±100
10R~10M ± 5% ±200
10R~10M ±1%,±2%. ±100
CR10 1210 0.33W 200V 400V 1R - 9.9R ±1%,±2%,±5%. (Low ohm)1 ±400
10R~1M ±0.1%,± 0.5% (Precision)2 ±100
10R~10M ± 5% ±200
10R~10M ±1%,±2%. ±100
CR12 1812 0.5W 200V 400V 1R - 9.9R ±1%,±2%,±5%. (Low ohm)1 ±400
10R~1M ±0.1%,± 0.5% (Precision)2 ±100
10R~10M ± 5% ±200
10R~10M ±1%,±2%. ±100
CR20 2010 0.5W 200V 400V 1R - 9.9R ±1%,±2%,±5%. (Low ohm)1 ±400
10R~1M ±0.1%,± 0.5% (Precision)2 ±100
10R~10M ± 5% ±200
10R~10M ±1%,±2%. ±100
CR28 1218 1W 200V 400V 1R - 9.9R ±1%,±2%,±5%. (Low ohm)1 ±400
10R~1M ±0.1%,± 0.5% (Precision)2 ±100
10R~10M ± 5% ±200
10R~10M ±1%,±2%. ±100
CR25 2512 1W 200V 400V 1R - 9.9R ±1%,±2%,±5%. (Low ohm)1 ±400
10R~1M ±0.1%,± 0.5% (Precision)2 ±100
10R~10M ± 5% ±200
10R~10M ±1%,±2%. ±100
CR30 2030 2W 200V 400V 1R - 9.9R ±1%,±2%,±5%. (Low ohm)1 ±400
10R~1M ±0.1%,± 0.5% (Precision)2 ±100
10R~10M ± 5% ±200
10R~10M ±1%,±2%. ±100
Operating Temperature Range: -55 ~ 155

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PSTN 公共電話交換機

 

產品應用 公共電話交換機

PSTN: Public Switch Telephone Network 

 

 

PSTN 是一種以模似技術為基礎的電路交換網絡,通過它要求的通信費用最低,但其數據傳輸質量及速度也是最慢,它的網絡資源利用率也比較低。通過PSTN 可以實現訪問,它是仍不可替代的聯網介質(技術)

   PSTN 可以看成是物理層的一個簡單的延伸,沒有向用戶提供流量控制,差錯控制等服務。而且,由於PSTN是一種電路交換的方式,所以一條通路自立直至釋放,其全部帶寛僅能被亙通兩端的設備使用,即時它們之間並沒有任何數據需要傳送,。因此,這種電路轉換的方式不能實現對網絡帶寛的充分利用,。通過 PSTN進行網絡亙聯(按入有圖)是一個通過PSTN連接兩個局部網域的網絡亙連的例子。在這兩個局域網中,各有一個路由器(Modem),每個路器均有一個串行接口與路由器相連,路由器再與PSTN相連,從而實現了這兩個局域網的亙連。(僅供參考)

 

PSTN公共電話交換機