2470

Features
■ Multi-Stage Protection (MSP®)
■ High current handling
■ Balanced TRIGARD® GDT
■ Switch-Grade Fail-Short
■ Self-resetting sneak current protection with
■
C
UL
®
US LISTED
UL Listed per UL 497 (File: E53117)
Bourns® TBU® Electronic Current Limiter
(ECL)
■ Overcurrent and overvoltage protection
■ Fast response to transients
2470 Series 5-Pin TBU® Surge Protector
Bourns® 2470 Series 5-Pin TBU® Protector is a new generation of telecommunications protector designed for protection of
sensitive high-speed network data circuits. Bourns® 2470 Series 5-Pin TBU® Protector integrates four advanced technologies: Our
proprietary advanced balanced TRIGARD® GDT, precision matched Metal Oxide Varistors (MOVs), a patented Switch-Grade Fail-Short
mechanism, and our patented Transient Blocking Unit (TBU®) device that protects the circuit by rapidly switching to a blocking state.
These technologies are combined to provide robust overvoltage and fast, resettable sneak-current protection with extremely low surge
let-through. Additionally, the 2470 Series has very low loss characteristics making it the ultimate choice for protection of sensitive, high
speed communication lines.
Characteristics
Test Methods per IEEE C62.31, UL 497, CSA C22.2, Telcordia GR 1361 and applicable sections of Telcordia GR 974.
DC Breakdown1 ..................................................................................................................................... 300-400 V
AC Breakdown1 ........................................................................60 Hz ................................................... 300-400 V
Impulse Breakdown ..................................................................100 V/µs .............................................. 600 V
1000 V/µs ............................................ 650 V
Insulation Resistance ...............................................................100 Vdc ............................................... > 1 GΩ
Insertion Loss ...........................................................................100 MHz .............................................. < 1 dB over frequency range2
Return Loss ..............................................................................100 MHz .............................................. < 10 dB over frequency range2
Capacitance Line to Line ..........................................................1 MHz .................................................. 12 pF typical
Capacitance Line to Ground .....................................................1 MHz .................................................. 23 pF typical
Line Resistance (Line In - Line Out) ...................................................................................................... 12 ohms typical
Vreset...................................................................................................................................................... < 14 V typical3
Impulse Reset4 .........................................................................52 V, 260 mA ....................................... < 10 ms5
135 V, 200 mA ..................................... < 10 ms5
150 V, 200 mA ..................................... < 150 ms5
Impulse Life Characteristics .....................................................100 A, 10/1000 µs ............................... > 3000 operations6
(Per Side, Simultaneously)
300 A, 10/1000 µs ............................... > 1000 operations6
500 A, 10/1000 µs ............................... > 1000 operations7
2,000 A, 10/250 µs .............................. > 100 operations6
5,000 A, 20/100 µs .............................. > 10 operations6
20,000 A, 8/20 µs ................................ > 1 operation
AC Life Characteristics .............................................................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 .............................. > 20 operations
200 A rms, 11 cycles............................ 1 operation8
120 A rms, 0.1 second ......................... 1 operation
Life Test Criteria
Insulation Resistance Throughout the Life Test ............................................................................... 100 megohms
Life Test Failures .............................................................................................................................. 0.0 %
Failures During Environmental Cycling w/surges ............................................................................ 0.0 %
Fail-Short (Vented or Non-vented Gas Tube) ........................................................................................ > 30 Arms, simultaneously
Storage and Operating Temperature ..................................................................................................... -55 to +85 °C
Notes:
The 2470 Series protectors are not to be used over powered spans.
1 Line to Line voltage is approximately 1.8 times the stated Line to Ground breakdown voltage.
2 See insertion and return loss charts on page 2.
3 Designers should note that deliberate DC bias such as sealing current or remote powering can hold the TBU® device in a blocking
state after a fault has passed.
4 Network applied.
5 Surpasses Telcordia GR 974.
6 Exceeds Telcordia GR 1361.
7 RUS PE-80.
Specifications are subject to change without notice.
8 Protector may short to ground.
The device characteristics and parameters in this data sheet can and do vary in different applications
and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
Applications
■ Telecommunications
■ Data communications
■ High-speed network compatible, i.e.
ADSL2+, VDSL2 and beyond
2470 Series 5-Pin TBU® Surge Protector
How to Order
Product Dimensions
13.0
(0.51)
2470 - 4 x(x) - x - xx - x(x)
5.7
(0.223)
Model Number Designator
Housing Color/Circuit Type
1 = Black/Standard
3 = Red/Special
6 = Blue/Standard
7 = Violet
9 = Orange/Standard Service (Non-Bridgelifter)
10 = Yellow/Standard
19.1
(0.75)
DIMENSIONS:
Pin Plating
G = Gold-plated
N = Tin-plated (GND pin is tin-plated on all models)
MILLIMETERS
(INCHES)
5.6
(0.22)
64.5
(2.54)
Protector Type
Blank = Multi-Stage Protector (MSP®)
BC = Balanced Capacitance MSP®*
Special Options
S = Sealed Case
ST = Sealed Case and Test Points
T = Test Points
* For use on DSL systems that require balanced capacitance of ≤1 pF.
52.6
(2.07)
Loss Characteristics for 5-Pin Protector Groups with Current Limiting Devices
Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
EMEA: Tel: +36 88 520 390 • Fax: +36 88 520 211
The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
REV. D 01/15
“BOURNS”, “MSP and “TRIGARD” are registered trademarks of Bourns, Inc.
“TBU” is a registered trademark of Bourns, Inc. in the U.S., Taiwan and European Community.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
11.2
(0.44)
6.1
(0.24)
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