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Features
■ Formerly
brand
The C650 & C850 Series are currently
available, but not recommended for
new designs. Bourns ? TBU-CA
■ Extremely high speed performance
Series is preferred.
■ Blocks high voltages and currents
■ Very high bandwidth; GHz compatible
■ Small package, minimal PCB area
■ Simple, superior circuit protection
■ RoHS compliant*, UL Recognized
C650 and C850 Series TBU ? High-Speed Protectors
Transient Blocking Units - TBU ? Devices
Bourns ? C650 and C850 series products are high-speed
bidirectional protection components, constructed using
MOSFET semiconductor technology, designed to protect
against faults caused by short circuits, AC power cross,
Agency Approval
UL recognized component File # E315805.
Industry Standards
induction and lightning surges.
Description
Model
The TBU high-speed protector, triggering as a function of
?
the MOSFET, blocks surges and provides an effective barrier
behind which sensitive electronics are not exposed to large
voltages or currents during surge events. The TBU ? device is
provided in a surface mount DFN package and meets industry
Telcordia
GR-1089
GR-974
Port Type 1, 3, 5
C650
C850
C650
C850
standard requirements such as RoHS and Pb Free solder
ITU-T
K.20, K.20E, K.21, K.21E, K.45
C850
re?ow pro?les.
Absolute Maximum Ratings (T amb = 25 °C)
Symbol
Parameter
Value
Unit
V imp
V rms
T op
T stg
Maximum protection voltage for impulse faults with rise time ≥ 1 μsec
Maximum protection voltage for continuous V rms faults
Operating temperature range
Storage temperature range
C650-xxx-WH
C850-xxx-WH
C650-xxx-WH
C850-xxx-WH
650
850
300
425
-40 to +85
-65 to +150
V
V
°C
°C
Electrical Characteristics (T amb = 25 °C)
Symbol
Parameter
Min.
Typ.
Max.
Unit
I op
I trigger
Maximum current through the device that will not cause
current blocking
Typical current for the device to go from normal operating
state to protected state
Cx50-100-WH
Cx50-180-WH
Cx50-260-WH
Cx50-100-WH
Cx50-180-WH
Cx50-260-WH
150
220
330
100
180
260
mA
mA
Cx50-100-WH
200
I out
Maximum current through the device
Cx50-180-WH
360
mA
Cx50-260-WH
520
C650-100-WH
C650-180-WH
12
8
14.5
10
R device
Series resistance of the TBU ? device
C650-260-WH
C850-100-WH
8
17
10
19
Ω
C850-180-WH
C850-260-WH
11
11
14
14
t block
I quiescent
V reset
Maximum time for the device to go from normal operating
state to protected state
Current through the triggered TBU ? device with 50 Vdc circuit
voltage
Voltage below which the triggered TBU ? device will transition to
normal operating state
1
14
1
μs
mA
V
C650 and C850 TBU ? High-Speed Protectors are bidirectional; speci?cations are valid in both directions.
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Speci?cations are subject to change without notice.
Customers should verify actual device performance in their speci?c applications.
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