Features
Applications
■ Formerly
brand
■ Mb Ethernet port protection
■ Gb Ethernet port protection
■ Isolated and floating interfaces
■ Extremely high speed performance
■ Blocks high voltages and currents
■ Low insertion loss
■ Two TBU™ protectors in one small package
■ Very high bandwidth; GHz compatible
■ RoHS compliant*, UL Recognized
TBU™ P650-U and P850-U Protectors
Transient Blocking Units - TBU™ Devices
Agency Approval
Bourns® Model P650-U and P850-U products are high speed,
unidirectional protection components, constructed using
MOSFET semiconductor technology, designed to protect against
faults caused by short circuits, AC power cross, induction and
lightning surges.
UL recognized component File # E315805.
Industry Standards
Description
Model
P650-U
P850-U
Port Type 3, 5
Telcordia GR-1089
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 standard
requirements such as RoHS and Pb Free solder reflow profiles.
Port Type 2, 4
K.20, K.20E, K.21, K.21E,
K.45
ITU-T
P850-U
Absolute Maximum Ratings (T
= 25 °C)
amb
Symbol
Parameter
Maximum protection voltage for impulse faults with rise time ≥ 1 µsec
Maximum protection voltage for continuous V
Value
Unit
P650-Uxxx-WH
P850-Uxxx-WH
650
850
V
V
V
imp
faults connected as P650-Uxxx-WH
300
425
rms
V
rms
a series pair (refer to page 3 Test Configuration Diagram)
P850-Uxxx-WH
T
T
Operating temperature range
-40 to +85
°C
°C
op
Storage temperature range
-65 to +150
stg
Electrical Characteristics (T
= 25 °C)
amb
Symbol
Parameter
Min.
Typ.
Max.
180
260
180
260
Unit
P650-U180-WH
Maximum current through the device that will not cause
current blocking
P650-U260-WH
P850-U180-WH
P850-U260-WH
P650-U180-WH
P650-U260-WH
P850-U180-WH
P850-U260-WH
P650-U180-WH
P650-U260-WH
P850-U180-WH
P850-U260-WH
P650-Uxxx-WH
P850-Uxxx-WH
I
I
I
mA
op
220
330
220
330
Typical current for the device to go from normal operating
state to protected state
mA
mA
trigger
out
360
520
360
520
7
Maximum current through the device
Series resistance of the TBU™ device
6
8
Ω
Ω
R
R
TBU
bal
9
0.5
Line-to line series resistance difference between two TBU™ device
Maximum time for the device to go from normal operating
state to protected state
P650-Uxxx-WH
P850-Uxxx-WH
t
1
µs
block
Current through the triggered TBU™ device with 50 Vdc circuit
voltage
I
1
mA
V
quiescent
Voltage below which the triggered TBU™ device will
transition to normal operating state
P650-Uxxx-WH
P850-Uxxx-WH
11
14
V
reset
The P-U Series TBU™ devices are unidirectional; specifications 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.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.