422E
器件资料摘要：
422B
&
422E
105046.R3 11/03 www.protekdevices.com
DATA PROCESS LINE PROTECTOR
Only One Name Means ProTek’Tion™
APPLICATIONS
✔ Data Processing Equipment
✔ Long Line Transmission Systems
✔ Control Processing Computers
✔ Building Management Systems
IEC COMPATIBILITY (EN61000-4)
✔ 61000-4-2 (ESD): Air - 15kV, Contact - 8kV
✔ 61000-4-4 (EFT): 40A - 5/50ns
✔ 61000-4-5 (Surge): 8/20µs - 95A, Level 4 (Line-Gnd) & 48A, Level 4 (Line-Line)
FEATURES
✔ Designed for EIA Standard RS-422 Data Lines
✔ Automatic Reset - Does Not Interrupt Service
✔ Permanent Two-Stage Line Pair Protection
✔ Common Mode & Differential Mode Protection
✔ Subnanosecond Response Time
✔ Effective Against Lightning, Inductive Switching and ESD
MECHANICAL CHARACTERISTICS
✔ Weight: 422B - 28 grams & 422E - 142 grams (Approximate)
✔ Flammability Rating UL 94V-0
✔ Device Marking:
Case - Logo, Terminal Designations & Part Number
Board - Logo, Date Code & Part Number
DESCRIPTION
The 422E/B series of protection is a two stage transient voltage protector providing
primary and secondary protection against lightning, inductive switching and electro-
static 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 422E/B series is designed to protect data lines from differential (line to line) and
common mode (line to ground) transients. Terminals 1 and 2, 3 and 4 for the 422E and
pins 2 and 3, 4, and 5 for the 422B are designated as line pairs. Each line pair is
referenced to ground. 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.
05046
422E
422B
&
422E
105046.R3 11/03 www.protekdevices.com
DATA PROCESS LINE PROTECTOR
Only One Name Means ProTek’Tion™
APPLICATIONS
✔ Data Processing Equipment
✔ Long Line Transmission Systems
✔ Control Processing Computers
✔ Building Management Systems
IEC COMPATIBILITY (EN61000-4)
✔ 61000-4-2 (ESD): Air - 15kV, Contact - 8kV
✔ 61000-4-4 (EFT): 40A - 5/50ns
✔ 61000-4-5 (Surge): 8/20µs - 95A, Level 4 (Line-Gnd) & 48A, Level 4 (Line-Line)
FEATURES
✔ Designed for EIA Standard RS-422 Data Lines
✔ Automatic Reset - Does Not Interrupt Service
✔ Permanent Two-Stage Line Pair Protection
✔ Common Mode & Differential Mode Protection
✔ Subnanosecond Response Time
✔ Effective Against Lightning, Inductive Switching and ESD
MECHANICAL CHARACTERISTICS
✔ Weight: 422B - 28 grams & 422E - 142 grams (Approximate)
✔ Flammability Rating UL 94V-0
✔ Device Marking:
Case - Logo, Terminal Designations & Part Number
Board - Logo, Date Code & Part Number
DESCRIPTION
The 422E/B series of protection is a two stage transient voltage protector providing
primary and secondary protection against lightning, inductive switching and electro-
static 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 422E/B series is designed to protect data lines from differential (line to line) and
common mode (line to ground) transients. Terminals 1 and 2, 3 and 4 for the 422E and
pins 2 and 3, 4, and 5 for the 422B are designated as line pairs. Each line pair is
referenced to ground. 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.
05046
422E
422B