C-303

Features
Model C-303™ is obsolete and not
recommended for new designs.
The 2420 Series is preferred.
■ Standard 5-pin configuration
■ Fail-short design
■ Low capacitance
■
Listed
■ Meets Telcordia 1361 & RUS PE-80 requirements
Model C-303™ 5-Pin Gas Tube Protector Modules
Bourns® Model C-303™ 5-Pin Protector Modules provide overvoltage protection in the industry-standard 5-pin configuration for use in
central and remote office connector blocks as well as building entrance terminals.
The protector housing is made of self-extinguishing thermoplastic in black (standard service) or red (special service) colors. Modules
are available with either tin-alloy or gold-plated outside plant and central office pins. The ground pin is always tin-alloy plated. The pin
plating can be be matched with the receptacle plating of the connector block or building entrance terminal.
The protectors incorporate a fail-short design to ensure safe operation and protect people and equipment from prolonged electrical
surges.
Characteristics
Test Methods per UL 497, CSA C22.2, Telcordia GR 974, 1361 and SBC SR 5165.
E
T
E
L
O
S
B
O
DC Breakdown Voltage Range @ 2000 V/second ......................................................................
AC Breakdown @ 60 Hz .............................................................................................................
Impulse Breakdown
100 V/µs .................................................................................................................................
1000 V/µs ...............................................................................................................................
Insulation Resistance @ 100 Vdc .............................................................................................. >
Insertion Loss @ 100 MHz ..........................................................................................................
Return Loss @ 100 MHz .............................................................................................................
Capacitance Tip to Ring @ 1 MHz .............................................................................................. <
Capacitance Tip or Ring to Ground @ 1 MHz ............................................................................ <
Impulse Reset 1
52 V, 260 mA ......................................................................................................................... <
135 V, 200 mA ....................................................................................................................... <
150 V, 200 mA ....................................................................................................................... <
Impulse Life Characteristics (Tip and Ring to Ground Simultaneously)
10 A, 10/1000 µs ................................................................................................................... >
100 A, 10/1000 µs ................................................................................................................. >
300 A, 10/1000 µs .................................................................................................................. >
500 A, 10/1000 µs .................................................................................................................. >
2,000 A, 10/250 µs ................................................................................................................. >
5,000 A, 20/100 µs ................................................................................................................. >
20,000 A, 8/20 µs ................................................................................................................... >
AC Life Characteristics (Tip and Ring to Ground Simultaneously)
0.5 A rms continuous.............................................................................................................. >
1 A rms, 1 second, 600 ft. cable ............................................................................................. >
1 A rms, 1 second, 1 mile cable ............................................................................................. >
10 A rms, 1 second ............................................................................................................... >
65 A rms, 11 cycles ................................................................................................................ >
120 A rms, 0.1 second ...........................................................................................................
High Current Capability and Thermal Operation (Tip and Ring to Ground) ................................. >
Storage and Operating Temperature ..........................................................................................
Safety
60 A, 3 sec. ............................................................................................................................
120 A, 0.6 sec. .......................................................................................................................
350 A, 0.04 sec. .....................................................................................................................
30 A, 15 min. ..........................................................................................................................
Safety Standards Listing..............................................................................................................
280-420 V
280-420 V
625 V
875 V
1 GΩ
Exceeds Category 5
Exceeds Category 5
1.25 pF typical
2.50 pF typical
10 ms
10 ms
150 ms
3000 operations
300 operations
100 operations
400 operations 2
25 operations
2 operations
1 operation
30 seconds
60 operations
60 operations
5 operations
1 operation 2
1 operation
30 A rms, 15 min.
-55 to +85 °C
Fail-short
Does not cause a fire hazard
Does not cause a fire hazard
Fail-short, does not cause a fire hazard
UL Listed to United States and
Canadian safety standards
Notes:
Network applied.
Per RUS PE-80.
1
2
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Model C-303™ 5-Pin Gas Tube Protector Modules
Packaging Specifications
Standard Package .................................................................................................................................
Dimensions (H x W x D) ........................................................................................................................
Weight ...................................................................................................................................................
100 modules
76.2 x 152.4 x 203.2 mm
(3 x 6 x 8 in.)
2.0 kg (4.4 lbs.)
7-Type Gas Tube Protector Modules
Voltage protection is provided with dual 350 Vdc gas tubes with
fail-short mechanism that shunt transient voltages to ground
and return to their normal state, providing protection that
withstands thousands of operations.
OSP TIP
SHORT PIN
LONG PIN
EQUIPMENT
TIP
*
GND
E
T
E
L
O
S
B
O
*
EQUIPMENT
RING
OSP RING
LONG PIN
SHORT PIN
*Metallic shunts close circuit on power faults
(fusible pellets melt). Gas tubes fail-short on
high current power fault.
Product Dimensions
42
(1.65)
18
(0.75)
10
(0.4)
DIMENSIONS:
MM
(INCHES)
12.7
(0.50)
How to Order
Product Code
Part Number
Description
Case Color
Front Test
Application
Tin-Alloy Plated Pins
303-0755
A0328090
5-Pin Gas Tube Protector, 350 V
Black
No
Standard Circuit
303-0775
A0312973
5-Pin Gas Tube Protector, 350 V
Red
No
Special Circuit
303M-07S1G0
A0338076
5-Pin Gas Tube Protector, 350 V
Black
No
Standard Circuit
303M-07S3G0
A0338078
5-Pin Gas Tube Protector, 350 V
Red
No
Special Circuit
Gold-Plated Pins
Note: Order by Part Number.
REV. D 01/13
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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