Spotlight III

www.bourns.com
Bourns Announces New Additions to
Product Palette
TISP4500H3
Single bidirectional overvoltage protector developed for
transformer coupled xDSL applications . . . . . . . . . . . . . Page 2
TISP7015, TISP7038
Low Voltage Triple Element TISP® products designed to protect
T1/E1/E3 systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
TISP43xxMM
ADSL & POTS modem protectors, specified to comply with
international modem standards. . . . . . . . . . . . . . . . . . . Page 4
TISP8250
Versatile telecom protector, designed for use in a variety of
applications including telephone handset/base station and SLIC
protection in access or telecommunication center equipment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5
TISP40xxL1
15 V, 30 V & 40 V TISP® products to protect high-frequency
digital telecom lines – now available in a 25 % smaller
footprint SMA package . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6
4B04B-524-RC
Line Protection Module offers Telcordia GR-1089-CORE compliant
overcurrent protection for telecom line cards. . . . . . . . . . Page 6
MF-R055/90, MF-R055/90U and MF-R075/90
90 V Multifuse® Positive Temperature Coefficient (PTC) Resettable
Fuses, provide overcurrent protection in power passing taps and
Network Interface Devices (NID) units. . . . . . . . . . . . . . . Page 7
MSP® Multi-Stage Protection Technology
Protects high-speed telecommunications circuits by combining
the robustness of a heavy-duty Gas Discharge Tube (GDT), with
the responsiveness of solid-state technology... . . . . . . . Page 8
Single Bidirectional Overvoltage
Protection For xDSL Applications
Our new TISP4500H3BJ is a single bidirectional overvoltage protector developed for
transformer coupled xDSL applications. It can be used as a 2-wire (A-B) protector, or as one element
TISP®
Thyristor Surge Protectors
Features
• 200 A 10/700 surge rating
• 350 V Working Voltage
• Enables ITU-T compliance
• Temperature range 0 to
70 °C
in a 3-wire (A-B-C) protector scheme. The main advantage of the TISP4500H3BJ is non-conduction
under ITU-T power contact tests† while still allowing the use of conventional capacitors for line-side
interwinding coupling.
The 350 V 0 to 70 °C rated working voltage (VDRM) means no conduction under the 230 V rms
(325.2 Vpk) testing, and the 500 V protection voltage (V(BO)) protects the interwinding capacitor C
under lightning tests. Power induction tests will cause conduction of the TISP4500H3BJ. The current
and duration of the ITU-T induction test conditions (600 V rms ~1 A/1 s and 450 V rms -1500 V rms
up to ~7.5 A for up to 2 s) is sustainable by a TISP4500H3BJ, however, additional components may be
required to fully comply with ITU-T recommendations.
The TISP4500H3BJ enables designers to develop protection schemes that fully comply with ITU-T
enhanced level testing, while removing the need for unwanted signal attenuating components
previously associated with current limiting under AC power contact testing. The protection scheme
now only has to comprehend primary protector coordination (if used), and induction test current.
The TISP4500H3BJ is rated for up to 200 A 10/700 and is able to
2 Wire Protection Application
provide protection under ITU-T recommendation K.21 enhanced test
level (6 kV).
†ITU-T(2000)
K.20/45/21 & K.44 (test circuits) Power Contact tests 2.3.1 &
Power Induction tests 2.1.1/.2.
We invite you to request your free samples and datasheet with the
prepaid card enclosed and visit Bourns at www.bourns.com.
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Protecting T1/E1/E3 Systems with a Low
Voltage Triple Element TISP® Protector
With high-speed data access systems gaining more importance in the modern world of
telecommunications, we have developed two new triple element thyristor surge protectors ideal for
TISP®
Thyristor Surge Protectors
T1/E1/E3, xDSL and high-speed data line protection. With working voltages of 8 V and 28 V and
Features
protection voltages of 15 V and 38 V respectively, these devices can protect against both transverse
• Protection for signal, data
and control lines
- xDSL, ISDN
- T1/E1/E3
- RS232 & RS485
• Low capacitance
- TISP7015: 40 pF max
- TISP7038: 30 pF max
• Rated for International
Surge Wave Shapes
mode (Metallic) and common-mode (Longitudinal) surges. The TISP7015 and TISP7038 are
guaranteed to withstand 40 A 10/700 surges applied to both Tip and Ring terminals simultaneously.
These devices also benefit from low off-state capacitance,
making them ideal for use in low voltage high-speed
transmission systems. This low capacitance reduces the
overall equivalent capacitance on the data lines and the low
protection voltage reduces the risk of transformer saturation.
The TISP7015 guarantees 40 pF maximum at 0 V bias while
Surge Ratings
Wave
Shape
Standard
8/20
10/700
10/1000
IEC 61000-4-5
ITU-T K.20/45/21
GR-1089-CORE
Rating
150 A
40 A
30 A
the TISP7038 guarantees a maximum of 30 pF at 0 V bias.
ITU-T Non-powered T1/E1 Application Circuit
We invite you to request your free
samples and datasheet with the
prepaid card enclosed and visit
Bourns at www.bourns.com.
3
Dedicated Protection For
International Modem Design
The design of modem protection has changed little in recent years, but with ever
increasing pressure on manufacturers to reduce costs and equipment size (e.g. notebooks), it has
TISP®
Thyristor Surge Protectors
become more difficult for modem protection to comply with international standards and safety
Features
requirements.
• Specified to comply with
international modem
standards
- ITU-T K.21 -10/700
- FCC Part 68 -Type A & B
10/560,9/720 and 10/160
surge requirements
- UL 1950/60950 & CSA 22.2
60950
- Telecordia GR-1089-CORE
2/10 and 10/1000 surge
guarantees
• Designed for use in POTS
& ADSL Modems
• Available in SMB & 25 %
smaller footprint SMA
Packages
We have responded by introducing three brand-new devices, designed specifically to provide UL
1950/60950 and FCC Part 68 (now TIA/EIA-IS-968) compliance. Our new TISP43xxMMAJ/BJ are
designed for all applicable modem standards and are available in both SMB and SMA packages.
Most modems are assembled using surface-mount technology, with protection components typically
supplied in SMB packages. The TISP43xxMMAJ/BJ series is available in either the SMB or the 25%
smaller footprint SMA packages,
electrical specifications are
identical for either package option.
This package choice allows for the
migration of designs with updated
PCBs to the smaller footprint
Device
Number
TISP4300MMAJ/BJ
TISP4350MMAJ/BJ
TISP4360MMAJ/BJ
Working Protection
Voltage Voltage
VDRM
V(BO)
Application
V
V
230
275
290
300
350
360
POTS Solid-State Relay Modems
POTS Electro-mechanical Relay Modems
ADSL Modems
alternative.
To meet international standards for an international modem design, a ‘superset' of standards tends to
be used for approval. For example, the most stringent tests from the USA are FCC Part 68 lightning
We invite you to request your free
tests mixed with UL 60950 AC safety tests. Some modems are also supplied to Europe and therefore
samples and datasheet with the
often incorporate ITU-T K.21.
prepaid card enclosed and visit
Bourns at www.bourns.com.
A modem that floats with respect to ground (utilizing an isolation or safety barrier) will conduct no
current during common mode FCC surge tests. So only the differential 800 V 10/560 test needs to be
considered. By utilizing a 7 Ω PTC thermistor or
Typical FCC Part 68 Compliant Protection Circuit
series resistance element compliant to UL 60950
AC requirements, any TISP43xxMMAJ/BJ will
pass approval in a suitably designed system.
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TISP8250 - Gated Unidirectional
Overvoltage & Overcurrent Protector
Our new TISP8250 is a versatile telecommunications protector, designed for
use in a variety of applications including: Telephone handset/base station and SLIC protection in
TISP®
Thyristor Surge Protectors
Features
• Applications include
- Telephone handset/base
station
- SLIC protection
• Programmable or fixed
protection voltage
• Functional replacement
for TPP25011
Access or Telecommunication Center equipment.
This unidirectional protector is intended for use with diode bridge fed circuits, like those commonly
employed in analog telephone handsets and DECT base stations, or in protection schemes where
reverse biased conditions will not occur. The TISP8250 can be used as a fixed overvoltage protector
having a "natural" maximum breakover voltage of 340 V - alternatively, when used with an external
reference such as a zener diode, it can be made to operate as a gate triggered protector.
The TISP8250 can also be used as a current triggered protector. Such an application would use the
TISP8250 as a conventional crowbar across the circuit to be protected. Triggering would be caused by
a sense resistor in series with the circuit to be protected connected to the TISP8250 Gate and Cathode
terminals. In this arrangement, the initial fault current flowing into the Circuit Under Protection
(CUP) will cause sufficient voltage drop across the sense resistor to trigger the protector. The sense
resistor value must allow for all normal CUP operating conditions, and yet cause the TISP8250 to
trigger under fault conditions.
When triggered, the TISP8250 shunts the main fault current around the input circuit diverting the
fault current away from the CUP which must be capable of handling the initial fault condition prior
to protector triggering. Triggering resistor selection can be approximated as follows:
Triggering: R(sense) ≈ VGK(MAX)/(Icct(max) - IGT(MAX))
Nominal operation: R(sense) ≈ VGK(MIN)/(Icct(nom) - IGT(MAX))
For example: Maximum CUP current withstand 100 mA, TISP8250 IGT(MAX) = 40 mA, VGK(MAX) = 1.2 V.
We invite you to request your free
Therefore R(sense) ≈ 1.2/(0.1 -0.04) ≈ 20 Ω and this corresponds approximately to a nominal operating
samples and datasheet with the
current of ≈ VGT(MIN)/R(sense) ≈ (0.6/20) ≈ 0.03 A (30 mA). For fixed voltage operation (no external
prepaid card enclosed and visit
trigger) the TISP8250 behaves like a conventional fixed-voltage protector. The breakover current (I(BO)
Bourns at www.bourns.com.
200 mA maximum @ 25 °C)and holding current (IH) values make the TISP8250 suitable for the
protection of conventional POTS line equipment, when operated
with associated fault current limiting devices such as Bourns®
Multifuse® products and Bourns® Line Protection Modules.
5
15 V, 30 V & 40 V TISP® Products To Protect
High-Frequency Digital Telecom Lines
We are proud to announce three low voltage
TISP® telecom protectors, developed using our new
TISP®
Thyristor Surge Protectors
Features
• Low capacitance (18 pF)
• Applications include:
- T1/E1
- U interface ISDN & Pairgain
- S interface ISDN & HDSL
- Home PNA
• Space saving SMA
package
- 25 % smaller footprint than
existing SMB package
- Supplied on reels of 5000
devices
Device
TISP4015L1AJ/BJ
TISP4030L1AJ/BJ
TISP4040L1AJ/BJ
low voltage Thyristor process, which allows us to
produce devices with lower & more precisely controlled
voltages than ever before. Each device provides 2-point
protection and is typically used for the protection of
transformer windings and low voltage electronics.
This new family of devices offers working voltages
(VDRM) as low as 8 V, together with a 15 V protection
voltage (V(BO)), making the TISP4015L1AJ/BJ ideally
suited to T1/E1 applications. The family also offers
higher working/protection voltage windows of 15/30 V
and 25/40 V for higher voltage applications. They offer
a 30 A 10/1000 lightning surge rating.
ITSP
VDRM V(B0) 10/1000 Coff
V
V
A
pF
8
15
25
15
30
40
30
30
30
23
22
18
The SMA footprint is 25 % smaller
than the standard SMB package.
These devices feature ultra low capacitance that is guaranteed at all anticipated system
levels, making them ideal for high data-rate digital applications. They also benefit from
symmetrical capacitance between two quadrants of the thyristor structure, minimizing
distortion for high data rates. We are currently the only manufacturer to specify both
typical and maximum junction capacitance under bias and no-bias conditions making
circuit design and system performance predictable.
We invite you to request your free samples and datasheet with the prepaid card enclosed and visit Bourns at www.bourns.com.
Bourns® Line Protection Modules
Bourns, Inc., a leading manufacturer of electronic components and integrated solutions,
introduces a new part it its family of 4B series Line Protection Network products. Used in conjunction
with Bourns’ Thyristor Integrated Surge Protectors, TISPPBL3 and TISP61089B, the new product
allows customers to use Bourns for both overvoltage and overcurrent protection for telecom line cards.
SLIC
Recommended Circuit Protection
Manufacturer
Series
Overvoltage
Overcurrent
Ericsson
PBL 3 Series
TISPPBL3
Bourns 4B04B-524-400
Legerity™
ISLIC™ 79R241
TISP61089B Bourns 4B04B-524-400
Infineon
PEB 4266
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Offering power line fault and lightning protection, the 4B04B-524RC features an integral thermal fuse link with a matched pair of
resistors designed to be TELCORDIA (formally BELLCORE)
GR-1089-CORE compliant. With resistance values of 15 Ω - 60 Ω
and a temperature range of -40 °C to +85 °C, the products have an
90 V Multifuse® Positive Temperature Coefficient
(PTC) Resettable Fuses in an HFC Network
The Multifuse® product line is proud to introduce the new 90 V series that includes the MFR055/90, MF-R055/90U and MF-R075/90, which have been specifically designed to provide
Multifuse®
Resettable Fuses
overcurrent protection in broadband cable telephony equipment such as power passing taps and
Network Interface Devices (NID) units.
Features
• Radial leaded device with
Vmax rating of 90 V
• Designed for overcurrent
protection in power
passing taps and NIDs
• Designed to aid
compliance with article
830 in the 1999 National
Electrical Code
• Models with hold currents
of 550 mA and 750 mA at
23 °C
• Available coated /
uncoated and kinked /
straight leads
The potential for power crosses or induced high voltages are very real so networks must provide
adequate protection against such threats. Article 830 in the 1999 National Electrical Code, which deals
with the network powered broadband equipment such as power passing taps, mentions that
maximum power must be limited to 100 VA within 60 seconds because of the risk high currents can
pose to the unknowing subscriber. The MF-R055/90 and the MF-R075/90 have been designed to act as
such current limiters.
A resettable polymer PTC fuse has some very obvious benefits in the area of cable telephony that will
help protect devices from fault conditions. The fact that a PTC automatically resets itself once the fault
clears eliminates the costly and timely service calls of service technicians. The MF-R055/90 with its
hold current of 550 mA at room temperature, 350 mA at 60 °C and maximum voltage rating of 90 V,
suits power passing taps designed to supply single family homes. The MF-R075/90 with its hold
current of 750 mA at room temperature, 480 mA at 60 °C and maximum voltage rating of 90 V suits
power passing taps designed to supply multi-dwelling units.
We invite you to request
your free datasheet with
the prepaid card enclosed
Model
V max
V
I max
A
and visit Bourns at
www.bourns.com.
MF-R055/90
MF-R055/90U
MF-R075/90
90
90
90
10
10
10
Ihold
Itrip
[email protected]
23 °C
Hold
0.55
0.55
0.75
[email protected]
23 °C
Trip
1.1
1.1
1.5
Initial
Resistance
Values
Ω@
Ω@
23 °C
23 °C
Min.
Max.
0.45
0.9
0.45
0.9
0.37
0.75
One hour post
trip resistance
standard trip
Min.
2.0
2.0
1.65
Maximum
time to trip
[email protected]
23 °C
Max.
1.6
1.6
2.0
[email protected]
23 °C
Tripped
power
dissipation
[email protected]
23 °C
60
28
60
2.0
2.0
2.5
LPM
Line Protection Modules
Open Frame SIP body style conforming to
UL 94V-0 standards, and can be used for
secondary circuit protection in central
office and remote equipment.
Availability: Sample quantities are available
and are offered for evaluation.
We invite you to request your free samples and datasheet
with the prepaid card enclosed and visit bourns.com.
7
Bourns® Multi-Stage Protection
Technology
Bourns® MSP® Assembly is designed to meet the challenges of tomorrow’s highspeed telecommunications circuits by combining the robustness of a heavy-duty Gas Discharge Tube,
GDT
Gas Discharge Tubes
Features
• 6th Generation Gas
Discharge Tube, GDT
- 2000 A 10/250 impulse
capability
- No failures during life tests
- UL 497 listed for back-up
gapless use
• Metal Oxide Varistors
- Eliminates leading cause of
premature GDT failure
- Better impulse limiting
than GDTs alone
• Patented Switch-Grade
Fail-Short
- Reduces risk of thermal
runaway
- Maximum fire safety
protection
GDT, with the responsiveness of solid-state technology.
As wireline telecom networks become shorter in length, modern electronic equipment is more
susceptible to higher energy surges over progressively smaller pair counts. MSP® (Multi-Stage
Protection) devices use patented technology to provide the highest surge carrying levels available,
while minimizing bandwidth limiting capacitance. Service life is extended by the elimination of air
back up gaps, while precision matched Metal Oxide Varistors (MOVs) ensure optimum safety and
consistently low clamping levels.
MSP® technology exceeds all industry standards for Impulse-Life and AC Life. Field deployments
throughout the years have proven spectacularly reliable. Recent uses with VDSL (12 MHz bandwidth
with 50 Mbps data rates) have demonstrated enhanced system performance and reach parameters
attesting to the technology’s “future-proofing” electronic performance.
High-speed data is virtually unimpeded due to its low insertion loss and behaves transparently to the
information flow due to its high return loss. In a recent deployment of a fiber optic-copper/LAN
system with VOD (Video-On Demand), streaming video at a rate of 108 Mbps was sent through the
copper loop flawlessly to the customer premises without error.
MSP® products meet or exceed requirements put forth by agencies such as Underwriter’s
We invite you to request your free
Laboratories, Telcordia (formerly Bellcore), CSA, and RUS.
datasheet with the prepaid card
enclosed and visit Bourns at
MSP® technology is featured in the Bourns® circuit protection product line, and primary telephony
www.bourns.com.
products including 5-pin CO (Central Office) protectors and NID (Network Interface Devices) protectors.
Reliable Electronic Solutions
www.bourns.com
Sales/Technical Assistance
Phone
Fax
Tollfree
909-781-5500
909-781-5700
1-877-4BOURNS
"Multifuse" and "MSP" are registered trademarks of Bourns, Inc.
"TISP" is a trademark of Power Innovations, Ltd., a Bourns Company and
Registered in U.S. Patent and Trademark Office.
"Bourns" is a registered trademark of Bourns, Inc. in the U.S. and other countries.
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COPYRIGHT © 2002, BOURNS, INC. LITHO IN U.S.A. IO 7/02 5M/PI0207