Meets test requirements of Telcordia
Features
GR 974, GR1361, SBC SR 5165 and
Superior protection at a low price
RUS PE-80
Balanced TRIGARD protection
Telcordia Analysis report DA-1547
Patented Switch-Grade Fail-Short device
U
per UL 497 (File: 53117)C L US LISTED
Quick response and high energy handling
Solid brass, gold-plated pins
Low capacitance (<2.5 pF) - ideal for high-
Test point access option
speed networks in high exposure
Sealed option for harsh environments
environments
2420 Series - 5-Pin Gas Discharge Tube (GDT) Protector
The Bourns 3-type Model 2420 overvoltage protection modules utilize Bourns proprietary high-ef ciency gas discharge tube with our
patented Switch-Grade Fail-Short mechanism to provide robust and reliable surge and thermal overload protection at a very
competitive price. The 2420 Series is based on Bourns three-terminal common chamber GDT. This design provides greatly
improved and balanced turn-on characteristics for overvoltage protection. The GDT is UL listed for use without a back-up
device. Air back-up devices can become contaminated; the circuitry of the 2420 eliminates the air back-up gap and thus the possibility of
its contamination. Our unique Switch-Grade Fail-Short device provides more reliable thermal overload protection compared to com-
monly used solder pellet or insulation burn-through designs.
Bourns Model 2420 Series 5-pin protectors can be used universally for broadband voice and data circuits including ADSL, ADSL2+,
VDSL, VDSL2 and high-speed Ethernet. The 2420 Series is an economical, reliable and low capacitance choice for overvoltage
protection of copper pair circuits.
Characteristics
Test Methods per UL 497, CSA C22.2, Telcordia GR 974, 1361 and SBC SR 5165.
DC Breakdown ............................................................................................................................................... 280-420 V
AC Breakdown @ 60 Hz ................................................................................................................................ 280-420 V
Impulse Breakdown
100 V/s .................................................................................................................................................... 625 V
1000 V/s .................................................................................................................................................. 875 V
Insulation Resistance @ 100 Vdc .................................................................................................................. >1 G
Insertion Loss @ 100 MHz ............................................................................................................................. Exceeds Category 5
Return Loss @ 100 MHz ................................................................................................................................ Exceeds Category 5
Capacitance Tip to Ring @ 1 MHz ................................................................................................................. <1.25 pF typical
Capacitance Tip or Ring to Ground @ 1 MHz ................................................................................................ <2.50 pF typical
1
Impulse Reset
52 V, 260 mA ............................................................................................................................................. <10 ms
135 V, 200 mA ........................................................................................................................................... <10 ms
150 V, 200 mA ........................................................................................................................................... <150 ms
Impulse Life Characteristics (Tip and Ring to Ground Simultaneously)
10 A, 10/1000 s ....................................................................................................................................... >3000 operations
100 A, 10/1000 s ..................................................................................................................................... >300 operations
300 A, 10/1000 s ..................................................................................................................................... >100 operations
2
500 A, 10/1000 s ..................................................................................................................................... >400 operations
2,000 A, 10/250 s .................................................................................................................................... >25 operations
5,000 A, 20/100 s .................................................................................................................................... >2 operations
20,000 A, 8/20 s ...................................................................................................................................... >1 operation
AC Life Characteristics (Tip and Ring to Ground Simultaneously)
0.5 A rms continuous ................................................................................................................................. >30 seconds
1 A rms, 1 second, 600 ft. cable ................................................................................................................ >60 operations
1 A rms, 1 second, 1 mile cable ................................................................................................................. >60 operations
10 A rms, 1 second .................................................................................................................................... >5 operations
2
65 A rms, 11 cycles .................................................................................................................................... >1 operation
120 A rms, 0.1 second ............................................................................................................................... 1 operation
High Current Capability and Thermal Operation (Tip and Ring to Ground) .................................................... >30 A rms, 15 min.
Storage and Operating Temperature .............................................................................................................. -55 to +85 C
Telcordia analyzed for controlled (non-sealed) and uncontrolled, high-exposure (sealed) environments per GR 974 and SBC SR 5165.
Telcordia Technical Analysis Report DA-1547.
Notes:
1
Network applied
2
Per RUS PE-80
Line to Line voltage is approximately 1.8 to 2 times the stated Line to Ground breakdown voltage.
Speci cations are subject to change without notice.
Customers should verify actual device performance in their speci c applications. 2420 Series - 5-Pin Gas Discharge Tube (GDT) Protector
How To Order Schematic
2420 - X XX - X - XX
O.P.
EQUIPMENT
TIP
TIP
Model Number Designator
Module Length
3 = Standard: 52.37 mm (2.06 in.) 7 = Special Short: 41.19 mm (1.62 in.)
Housing Color/Circuit Type GND
1 = Black/Standard 6 = Blue/Standard 10 = Yellow/Standard
3 = Red/Special 9 = Orange/Standard Service (non-Bridgelifter)
Pin Plating
G = Gold Plated N = Tin Plated O.P. EQUIPMENT
RING
RING
Special Options
S = Sealed Case ST = Sealed Case and Test Points*
T = Test Points*
*T and ST options are not available on 2420-7x short module.
Examples: 3B1E = 2420-31-G (black, no test points) 3C1E = 2420-31-G-T (black, with test points)
3B3E = 2420-33-G (red, no test points) 3C3E = 2420-33-G-T (red, with test points)
Product Dimensions
2420-3 MODULE
42.17
(1.66)
12.8 29.9
5.7
(0.50) (1.18)
(0.223)
2.3
2.2
DIA. 5 PLCS.
DIA. 2 PLCS.
(.092)
(.085)
19.0
(0.75)
5.6 11.2
11.2
(0.44) (0.220) (0.440)
5.1
3.6 (0.20) 6.1
(0.240)
(0.14)
10.2
(0.40)
2420-7 MODULE
30.99
MM
(1.22)
DIMENSIONS:
(INCHES)
24.9
(0.98) Asia-Paci c:
Tel: +886-2 2562-4117
6.15
Fax: +886-2 2562-4116
(0.24)
Europe:
Tel: +41-41 768 5555
Fax: +41-41 768 5510
The Americas:
Tel: +1-951 781-5500
5.1
Fax: +1-951 781-5700
(0.20)
www.bourns.com
10.2
(0.40)
REV. N 11/12
MSP and TRIGARD are registered trademarks of Bourns, Inc.
Speci cations are subject to change without notice.
Customers should verify actual device performance in their speci c applications.