The P650-U & P850-U Series are
currently available, but not recom-
mended for new designs. Bourns®
TBU-DT Series is preferred.
Features
■ Formerly
brand
■ 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
P650-U and P850-U Series TBU® High-Speed 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
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 3, 5
Telcordia GR-1089
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.
Unit
P650-U180-WH
180
260
180
260
Maximum current through the device that will not cause
current blocking
P650-U260-WH
P850-U180-WH
P850-U260-WH
I
I
I
mA
op
P650-U180-WH
P650-U260-WH
P850-U180-WH
P850-U260-WH
220
330
220
330
Typical current for the device to go from normal operating
state to protected state
mA
mA
trigger
out
P650-U180-WH
P650-U260-WH
P850-U180-WH
P850-U260-WH
360
520
360
520
Maximum current through the device
Series resistance of the TBU® device
P650-Uxxx-WH
P850-Uxxx-WH
6
8
7
9
Ω
Ω
R
R
device
bal
Line-to line series resistance difference between two TBU® devices
0.5
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
quiescent
Voltage below which the triggered TBU® device will
transition to normal operating state
P650-Uxxx-WH
P850-Uxxx-WH
11
14
V
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 and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.