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參數資料
| 型號： | 485ELC |
| 廠商： | PROTEK DEVICES |
| 元件分類： | 保護電路 |
| 英文描述： | HIGH SPEED ETHERNET DATA LINE PROTECTOR |
| 中文描述： | TELECOM, SURGE PROTECTION CIRCUIT, DMA10 |
| 文件頁數： | 1/3頁 |
| 文件大小： | 83K |
| 代理商： | 485ELC |
HIGH SPEED ETHERNET DATA LINE PROTECTOR
1
05039.R3 11/03
www.protekdevices.com
485ELC
APPLICATIONS
Ethernet - 10/100 Base T
Catagory 5 Systems
RS-485 Serial Communication Lines
ISDN Equipment/Systems
Video Transmission Systems
Smoke Detector & Fire Alarm Systems
IEC COMPATIBILITY (EN61000-4)
61000-4-2 (ESD): Air - 15kV, Contact - 8kV
61000-4-4 (EFT): 40A - 5/50ns
61000-4-5 (Surge): 8/20s - 95A, Level 4 (Line-Gnd) & 48A, Level 4 (Line-Line)
FEATURES
LOW CAPACITANCE - 25PF
Designed for EIA Standard RS-485 Data Lines
Permanent Two-Stage 2 Line Pair Protector
Subnanosecond Response Time
Common & Differential Mode Protection
Automatic Reset - Does Not Interrupt Service
Effective Against Lightning, Inductive Switching and ESD
MECHANICAL CHARACTERISTICS
Weight: 142 grams (Approximate)
Flammability Rating UL 94V-0
Device Marking: Logo, Date Code, Terminal Designations & Part Number
DESCRIPTION
The 485ELC is low capacitance, two-stage transient voltage protector the provides primary and
secondary protection against lightning, inductive switching and electrostatic discharge (ESD)
transient threats. The first stage diverts the transient current through the ground terminal return
path and the second stage clamps the voltage to a safe level without interruption of service.
The 485ELC is designed to protect data lines, transmission lines, timing and control interface
circuits from common-mode (line-to-ground) or differential (line-line) transients. Terminals 1 & 2
and 3 & 4 are designed as line pairs. A transient voltage suppressor is connected across each
line pair for differential mode protection.
Capacitance over the operating voltage range is important. If capacitance is non-linear, distor-
tion, loss of data or access to the I/O port can occur (See Figure 1).
05043
485ELC
Industry Standard
Low Capcitance
Solid State Protector
ProTeks Device
0
2
4
6
8
10
VOP - Data Line Operating Voltage - Volts
C
-Cap
acit
ance
-pF
10
100
1000
FIGURE 1
LINEAR CAPACITANCE VS
NON-LINEAR CAPACITANCE
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 485ELC_10 | 制造商:PROTEC 制造商全稱:Protek Devices 功能描述:HIGH SPEED ETHERNET DATA LINE PROTECTOR |
| 485ELC_12 | 制造商:PROTEC 制造商全稱:Protek Devices 功能描述:HIGH SPEED ETHERNET DATA LINE PROTECTOR |
| 485FPP | 功能描述:界面模塊 485 FUSED PORT PROT RoHS:否 制造商:B&B Electronics (Quatech) 產品: 通道/端口數量: 數據速率: 接口類型: 工作電源電壓: 最大工作溫度: |
| 485HESP | 功能描述:浪涌抑制器 485 SRGE PRO W/TB RS-485 High Energy RoHS:否 制造商:Bourns 電壓額定值:40 V 電流額定值:750 mA 工作溫度范圍:- 40 C to + 125 C 端接類型:SMD/SMT 封裝 / 箱體: |
| 485HSPR | 功能描述:422/485 H.S. ISO CONV W/SURG 制造商:b&b smartworx, inc. 系列:- 零件狀態:過期 類型:轉換器，RS-232 轉 RS-422/485 配套使用產品/相關產品:- 標準包裝:1 |
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