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TCS-DL004-500-WH

P1-P3P4-P6P7-P7
Features
n High-speed performance
n Superior overcurrent protection
n Bidirectional
n Low resistance
n Excellent channel to channel resistance
matching
n Small SMT package
n RoHS compliant* and halogen free**
Applications
n VDSL and Ethernet ports
n Protection modules and dongles
n Process control equipment
n Test and measurement equipment
TCS-DL Series - TCS
™
Dual Transient Current Suppressors
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
** Bourns follows the prevailing definition of “halogen free” in the industry. Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less;
(b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less.
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.
General Information
The Bourns
®
TCS
™
DL Series High-Speed Protector products contain dual, well-matched,
low resistance, bidirectional, very high-speed Transient Current Suppressors. By limiting
the maximum current to a safe level, a Bourns
®
TCS
™
DL device offers superior protection
for very high data rate differential lines against faults caused by short circuits, induction
and lightning surges.
Bourns
®
TCS
™
High-Speed Protectors are typically used in conjunction with low capacitance
TVS devices to form an extremely low let-through energy barrier to excessive voltages
and currents during surge events which may cause damage to unprotected high-speed,
low voltage driver and receiver components.
Absolute Maximum Ratings (@ T
A
= 25 °C Unless Otherwise Noted)
Symbol Parameter Value Unit
V
imp
Peak impulse voltage withstand with duration less than 1 ms 40 V
T
op
Operating temperature range -55 to +125 °C
T
stg
Storage temperature range -65 to +150 °C
T
JMAX
Maximum junction temperature +125 °C
Electrical Characteristics (@ T
A
= 25 °C Unless Otherwise Noted)
Symbol Parameter Part Number Min. Typ. Max. Unit
I
trigger
Current required for the device to go from operating state to
protected state
TCS-DL004-250-WH
TCS-DL004-500-WH
TCS-DL004-750-WH
250
500
750
375
750
1100
500
1000
1500
mA
R
ON
Series resistance of the TCS™ device
TCS-DL004-250-WH
TCS-DL004-500-WH
TCS-DL004-750-WH
1.6
1.0
0.7
2.3
1.4
1.0
3.0
1.8
1.3
Ω
D
RON
Channel to channel resistance match
TCS-DL004-250-WH
TCS-DL004-500-WH
TCS-DL004-750-WH
±0.05
±0.03
±0.02
Ω
t
limit
Time for the device to go from normal operating state to current limiting state 50 ns
R
θJA
Junction to air thermal resistance, FR4 PCB.
0.035 sq. in. of copper in addition to solder pads
130 °C/W
TCS
™
Device
Line 1
In/Out
Line 2
In/Out
Line 1
Out/In
Line 2
Out/In
*RoHS COMPLIANT
LEAD FREE
*RoHS COMPLIANT
&
**HALOGEN FREE
LEAD FREE
VERSIONS ARE
RoHS COMPLIANT*
The Bourns
®
TCS
™
High-Speed Protector is provided in a space-saving, surface mount
DFN package meeting industry standard requirements such as RoHS and Pb Free solder reow proles.
Asia-Pacic: Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA: Tel: +36 88 520 390 • Email: eurocus@bourns.com
The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
Temperature (°C)
-55 -35 -15 525456585 105 125
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
Normalized Resistance
Voltage (V)
-1.2
-1.0
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
1.2
403020100-10-20-30-40
Normalized Current
Temperature (°C)
-55 -35 -15 525456585 105 125
0
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
Normalized Trip Current
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in differ-
ent applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
TCS-DL Series - TCS
™
Dual Transient Current Suppressors
Performance Graphs
Normalized V-I Curve Under Surge Conditions
Resistance Change vs. Temperature
Graph 1 below shows a normalized Typical V-I curve for Bourns
®
TCS
™
DL Series High-Speed Protector products under surge
conditions. Graphs 2 and 3 show the change in resistance and
trip current versus temperature, respectively.
Trip Current Change vs. Temperature
SURGE PROTECTION
The Bourns
®
TCS™ High-Speed Protector is designed to be
used in conjunction with a suitable overvoltage limiting device,
such as a TVS diode or a TISP
®
thyristor as shown below, to
provide comprehensive current and voltage limiting protection
against surges.
Coordination of Bourns
®
TCS
™
High-Speed Protector with Overvoltage
Limiting Device
This two-stage protection limits the maximum voltage at the
interface to the clamping voltage of the overvoltage device,
while also limiting the current into the protected device to the
dened limit of the Bourns
®
TCS
™
High-Speed Protector.
Designers should choose a Bourns
®
TCS
™
High-Speed
Protector with a current limit that the protected device can
handle for the duration of the surge event.
The Bourns
®
TCS
™
High-Speed Protector acts like a low value
resistor during normal operation. As the Bourns
®
TCS
™
High-
Speed Protector has no electrical connection to anything other
than the signal line it protects, the capacitance to ground is
purely dictated by the capacitance of the device to surrounding
components and PCB traces, which with careful layout can be
kept to an absolute minimum.
The Bourns
®
TCS
™
High-Speed Protector can block voltages
up to 40 V. This enables very low voltage electronics to be
protected by a lower capacitance, higher voltage TVS device,
thus achieving very low capacitive loading on high-speed signal
lines. For example, on a 3.3 V driver, a 12 V rated TVS may
be used, having much lower and more linear capacitance than
a lower voltage type. Even though a high voltage TVS is used,
the maximum stress seen by the protected device is much
lower than would be seen by using a low voltage TVS by itself,
as the current is limited to within the maximum limits of the
Bourns
®
TCS
™
High-Speed Protector.
The Bourns
®
TCS
™
High-Speed Protector is primarily designed
to offer superior and cost-effective protection of sensitive
electronics against high energy surges that are transient in
nature. Unlike the more complex TBU
®
High-Speed Protector
device, the TCS
™
Protector does not exhibit a strong foldback
Basic Device Operation
PROTECTED
DEVICE
VOLTAGE
LIMITING
DEVICE
TRANSIENT
SURGE
Bourns
®
TCS
™
HSP
TCS-DL Series - TCS
™
Dual Transient Current Suppressors
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.
Basic Device Operation (Continued)
characteristic after reaching the current limit, and therefore
doesn’t protect against DC and low frequency stresses
(typically achieved through the use of a transformer or
capacitive coupling). This is analogousto comparing the shunt-
ing characteristics of a Transient Voltage Suppressor device to
a thyristor type of protector, such as Bourns
®
TISP
®
devices.
Both the Bourns
®
TCS™ High-Speed Protector and TVS
device have limited or no foldback characteristic, and therefore
have relatively low short term surge energy limits. When used
together in a protection circuit, the surge must not exceed the
thermal capability of either device. The following three graphs
show the maximum surge duration with respect to voltage of the
three TCS-DL devices at both +25 °C and +85 °C.
Time (Seconds)
0.00001 0.0001 0.001 0.01 0.1 1
0
10
20
30
40
50
Voltage Across TCS
™
Device (Volts)
25 °C
85 °C
Time (Seconds)
0.00001 0.0001 0.001 0.01 0.1 1
0
10
20
30
40
50
Voltage Across TCS
™
Device (Volts)
25 °C
85 °C
Time (Seconds)
0.00001 0.0001 0.001 0.01 0.1 1
0
10
20
30
40
50
Voltage Across TCS
™
Device (Volts)
25 °C
85 °C
TCS-DL004-250-WH SOA Single Surge Duration
TCS-DL004-750-WH SOA Single Surge Duration
TCS-DL004-500-WH SOA Single Surge Duration
Time (Seconds)
0.00001 0.0001 0.001 0.01 0.1 1
0
10
20
30
40
50
Voltage Across TCS
™
Device (Volts)
25 °C
85 °C
Time (Seconds)
0.00001 0.0001 0.001 0.01 0.1 1
0
10
20
30
40
50
Voltage Across TCS
™
Device (Volts)
25 °C
85 °C
Time (Seconds)
0.00001 0.0001 0.001 0.01 0.1 1
0
10
20
30
40
50
Voltage Across TCS
™
Device (Volts)
25 °C
85 °C
Time (Seconds)
0.00001 0.0001 0.001 0.01 0.1 1
0
10
20
30
40
50
Voltage Across TCS
™
Device (Volts)
25 °C
85 °C
Time (Seconds)
0.00001 0.0001 0.001 0.01 0.1 1
0
10
20
30
40
50
Voltage Across TCS
™
Device (Volts)
25 °C
85 °C
Time (Seconds)
0.00001 0.0001 0.001 0.01 0.1 1
0
10
20
30
40
50
Voltage Across TCS
™
Device (Volts)
25 °C
85 °C
P1-P3P4-P6P7-P7

TCS-DL004-500-WH

Mfr. #:
Buy TCS-DL004-500-WH
Manufacturer:
Bourns
Description:
Surge Suppressors TCS Dual 40V 500mA
Lifecycle:
New from this manufacturer.
Delivery:
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