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Features
■ Formerly
brand
The P650-U & P850-U Series are
currently available, but not recom-
mended for new designs. Bourns ?
■ Extremely high speed performance
TBU-DT Series is preferred.
■ Blocks high voltages and currents
■ Low insertion loss
■ Two TBU ? protectors in one small package
■ Very high bandwidth; GHz compatible
■ RoHS compliant*, UL Recognized
P650-U and P850-U Series TBU ? High-Speed Protectors
Bourns Model P650-U and P850-U products are high-speed,
Transient Blocking Units - TBU ? Devices
?
unidirectional protection components, constructed using
MOSFET semiconductor technology, designed to protect against
faults caused by short circuits, AC power cross, induction and
Agency Approval
UL recognized component File # E315805.
Industry Standards
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
Telcordia
GR-1089
Port Type 3, 5
Port Type 2, 4
P650-U
P850-U
currents during surge events. The TBU ? device is provided in a
surface mount DFN package and meets industry standard
ITU-T
K.20, K.20E, K.21, K.21E,
K.45
P850-U
requirements such as RoHS and Pb Free solder 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 connected as
a series pair (refer to page 3 Test Con?guration Diagram)
Operating temperature range
Storage temperature range
P650-Uxxx-WH
P850-Uxxx-WH
P650-Uxxx-WH
P850-Uxxx-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
P650-U180-WH
180
I op
Maximum current through the device that will not cause
current blocking
P650-U260-WH
P850-U180-WH
260
180
mA
P850-U260-WH
P650-U180-WH
220
260
I trigger
Typical current for the device to go from normal operating
state to protected state
P650-U260-WH
P850-U180-WH
330
220
mA
P850-U260-WH
P650-U180-WH
330
360
I out
Maximum current through the device
P650-U260-WH
P850-U180-WH
520
360
mA
P850-U260-WH
520
R device
Series resistance of the TBU ? device
P650-Uxxx-WH
P850-Uxxx-WH
6
8
7
9
Ω
R bal
Line-to line series resistance difference between two TBU ? devices
0.5
Ω
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
P650-Uxxx-WH
P850-Uxxx-WH
P650-Uxxx-WH
P850-Uxxx-WH
1
11
14
1
μs
mA
V
The P-U Series TBU devices are unidirectional; speci?cations are valid for input direction only. For the output direction, the TBU device is a
? ?
resistor.
*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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