232B
&
232E
1
05060.R3 11/03
www.protekdevices.com
INDUSTRIAL COMPUTER DATA LINE PROTECTOR
Only One Name Means ProTek'TionTM
APPLICATIONS
RS-232 Transmission Lines
Catagory 3 Systems
Control & Monitoring Systems
Analog Signal Transmissions
Telemetry Outstations
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
4 WIRE LINE-GROUND PROTECTION
Designed for EIA Standard RS-232 Data Lines
Permanent Two-Stage, 2 Line Pair or 4 Line Protector
Subnanosecond Response Time
Automatic Reset - Does Not Interrupt Service
Effective Against Lightning, Inductive Switching and ESD
MECHANICAL CHARACTERISTICS
Weight: 232B - 28 grams & 232E - 142 grams (Approximate
Flammability Rating UL 94V-0
Device Marking:
Case - Logo, Terminal Designations & Part Number
Board - Logo, Date Code & Part Number
DESCRIPTION
The 232B/E is a 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 232B/E is designed to protect two line pairs or four (4) data lines from common-
mode (line-to-ground) lightning or switching transients. The datalines are isolated to
prevent near or far end cross talk problems. This product can also be used on data
and transmission lines, security, timing and control interface circuits.
05060
232E
232B
2
www.protekdevices.com
05060.R3 11/03
232B
&
232E
DEVICE CHARACTERISTICS
MAXIMUM RATINGS @ 25C
MAXIMUM
CLAMPING
VOLTAGE
(8/20s)
@ 500A
V
C
VOLTS
MAXIMUM
LEAKAGE
CURRENT
@ 25V
OP
I
D
A
MAXIMUM
CAPACITANCE
@ 0V, 1MHz
C
pF
Peak Operatiing Line Voltage (V
OP
)
Operating Line Current (I
O
)
Maximum Transient Voltage
Maximum Transient Current
(8/20s waveform)
Operating & Storage Temperature
Response Time
ELECTRICAL CHARACTERISTICS @ 25C
25V
200mA
10kV
10kA/Wire
40kA/Protector
-55C to 100C
< 1 nanosecond
MAXIMUM
LINE
THRUPUT
RESISTANCE
R
OHMS
40
12
5
2000
INSTALLATION INSTRUCTIONS
There are five (5) terminals on both the
line
and
equipment
side of the
232E - four data line terminals and two ground terminals. Both ground
terminals, as shown on the label, are connected internally. A single
ground connection is sufficient. However, it is recommended that both
ground connections be used for a lower impedance path to earth. This
connection can be made through the green AC power ground wire or a
known earth ground. The ground wire should be #14 stranded wire.
Incoming data lines are cut or disconnected from the equipment to insert
the 232E product. The
line
side of the terminals are to be connected to
data lines from the outside world or lines that carry the transient threats
into the equipment to be protected. The
equipment
side of the terminals
are to be connected to the equipment to be protected . The location of
the product should be such that these wires are as short as possible. A
#18 or 20 gauge wire can be used for these connections.
Protectors should be installed at both ends of the data lines, at the point
of entry to buildings. Use the shortest possible connection to a low
impedance earth ground. Proper grounding and bonding are essential
for computer installation applications.
The 232B circuit board requires an edge connector interface for
installation. The circuit board should be located at the building interface
for incoming lines from the outside world.
Both the 232B and 232E can be mounted on a data line circuit panel,
which must be hard wired to the incoming data lines. Unprotected input
lines and ground wires are to be separated from protected output lines to
prevent electromagnetic coupling of noise from high transient currents on
the input lines.
ProTek's data line protector is designed with a short circuit failure mode
to give maximum protection. A fuse, fussable link, or circuit breaker is
recommended for each data/signal line on the input (line) side of the
protector for those applications that require an open circuit failure mode.
Caution:
A low DC resistance ground may not be indicative of a good
lightning ground. Lightning contains a broad spectrum of frequencies -
up to 1 MHz. A low impedance path to ground at the transient frequen-
cies is necessary. A ground strap is recommended or a #6 AWG
stranded wire. For wire lengths over 1.5 meters, there may be some
excessive line to earth potential under severe thunderstorm conditions.
For these applications, an additional protector may be necessary at the
equipment interface.
3
www.protekdevices.com
05060.R3 11/03
232B
&
232E
COPYRIGHT ProTek Devices 2003
SPECIFICATIONS: ProTek reserves the right to change the electrical and or mechanical characteristics described herein
without notice (except JEDEC).
DESIGN CHANGES: ProTek reserves the right to discontinue product lines without notice, and that the final judgement
concerning selection and specifications is the buyer's and that in furnishing engineering and technical assistance,
ProTek assumes no responsibility with respect to the selection or specifications of such products.
PACKAGE OUTLINE & DIMENSIONS
ProTek Devices
2929 South Fair Lane, Tempe, AZ 85282
Tel: 602-431-8101 Fax: 602-431-2288
E-Mail:
sales@protekdevices.com
Web Site:
www.protekdevices.com
232B Board Outline
0.50" MAX (12.7mm)
3.0" MAX
(76.2mm)
1.90" MAX
(48.2mm)
LINE
EQUIPMENT
030" MAX
(7.6mm)
OUTPUT Connected to
Transmit/Receive Circuits
GND
2
5
12
15
0.07"
(17.8mm)
CONTINUITY
5
4
3
2
12
13
14
15
INPUT
OUTPUT
INPUT Connected to Line From
Outside World
Note:
I/O contacts spaced at 0.156"
(3.96mm) centers.
Orientation Notch
232E Case Outline
EQUIPMENT
1
2
4
GND
3
2
1
4
GND
3
WARNING:
LINE
3.8" MAX
(95.5mm)
3.25"0.015"
(82.6mm0.38mm)
2.25" MAX
(57.2mm)
Mounting
Hole for #8
Screw
1.19" MAX
(30.2mm)
#6 Screws
0.61" MAX
(15.5mm)
Adhesive Mylar Label
Terminal Screw
1.125"
(30.2mm)
Terminal Strip
PDF 
ZIP