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參數(shù)資料
| 型號： | 422ELC |
| 廠商： | PROTEK DEVICES |
| 元件分類： | 保護電路 |
| 英文描述： | DIGITAL PROCESS DATA LINE PROTECTOR |
| 中文描述： | TELECOM, SURGE PROTECTION CIRCUIT, DMA10 |
| 文件頁數(shù)： | 1/3頁 |
| 文件大小： | 82K |
| 代理商： | 422ELC |
DIGITAL PROCESS DATA LINE PROTECTOR
1
05038.R3 11/03
www.protekdevices.com
422ELC
APPLICATIONS
RS-422 Data Lines
Digital Process Control Loop
Long Line Digital Systems
Digital Transmission
Telemetry 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-422 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 422ELC is low capacitance, two-stage transient voltage protector that 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 422ELC is designed to protect data lines from differential (line-line) and common-mode
(line-to-ground) transients. Terminals 1 & 2 and 3 & 4 for the 422ELC are designed as line
pairs. A transient voltage suppressor is connected across each line pair for differential mode
protection. Each line pair is referenced to ground.
This product can also be used on telephone, signal/data lines, security, timing and control
interface circuits. For most applications, the product should be located as close as possible to
the equipment being protected. A low impedance grounding system is important to maintain a
low voltage clamp between the line-to-ground connection. Capacitance over the operating
voltage range is important. If capacitance is nonlinear, distortion, loss of data or access to the I/O
port can occur (See Figure 1).
05043
422ELC
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(shù) |
參數(shù)描述 |
|---|---|
| 422ELC_10 | 制造商:PROTEC 制造商全稱:Protek Devices 功能描述:DIGITAL PROCESS DATA LINE PROTECTOR |
| 422ELC_12 | 制造商:PROTEC 制造商全稱:Protek Devices 功能描述:DIGITAL PROCESS DATA LINE PROTECTOR |
| 422EN112 | 功能描述:基本/快動開關 Sealed SE/EN SWITCHES RoHS:否 制造商:OTTO 觸點形式: 執(zhí)行器: 電流額定值: 電壓額定值 AC: 電壓額定值 DC: 功率額定值: 工作力: IP 等級: NEMA 額定值: 端接類型: 安裝: |
| 422EN1-12 | 功能描述:基本/快動開關 Sealed SE/EN SWITCHES RoHS:否 制造商:Omron Electronics 觸點形式:SPDT 執(zhí)行器:Lever 電流額定值:5 A 電壓額定值 AC:250 V 電壓額定值 DC:30 V 功率額定值: 工作力:120 g IP 等級:IP 67 NEMA 額定值: 端接類型:Wire 安裝:Panel |
| 422EN133-RB | 功能描述:基本/快動開關 N.O./N.C. SPDT 7A Enclosed Switch RoHS:否 制造商:Omron Electronics 觸點形式:SPDT 執(zhí)行器:Lever 電流額定值:5 A 電壓額定值 AC:250 V 電壓額定值 DC:30 V 功率額定值: 工作力:120 g IP 等級:IP 67 NEMA 額定值: 端接類型:Wire 安裝:Panel |
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