IA
NT
Features
■
Formerly
■
■
■
■
■
■
Applications
■
POTS linecards
■
VolP equipment
■
Voice and data combo linecards
■
ONU, ONT
■
Gateways
■
Cable and DSL modems
brand
Extremely high speed performance
Blocks high voltages and currents
Two TBU
™
protectors in one small package
Simple, superior circuit protection
Minimal PCB area
RoHS compliant*, UL Recognized
*R
oH
S
CO
M
PL
TBU
™
P500-G and P850-G Protectors
Transient Blocking Units - TBU
™
Devices
Agency Approval
UL recognized component File # E315805.
Industry Standards
Description
Telcordia
ITU-T
GR-1089
Port Type 2, 4
Port Type 3, 5
Model
P500-G
P850-G
P850-G
Bourns
®
Model P500-G and P850-G
TBU
™
products are high speed, surge
protection components designed to
protect Subscriber Line Interface Circuits
(SLICs) against transients caused by
AC power cross, induction and lightning
surges.
The TBU device blocks surges and
provides an effective barrier behind
which sensitive electronics are not
exposed to large voltages or currents
during surge events.
™
K.20, K.20E, K.21, K.21E, K.45
Absolute Maximum Ratings (T
amb
= 25 °C)
Symbol
V
imp
V
rms
T
op
T
stg
Parameter
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
P500-Gxxx-WH
P850-Gxxx-WH
P500-Gxxx-WH
P850-Gxxx-WH
Value
500
850
300
425
-40 to +85
-65 to +150
Unit
V
V
°C
°C
Electrical Characteristics (T
amb
= 25 °C)
Symbol
Parameter
Maximum current through the device that will not cause
current blocking
P500-G120-WH
P500-G200-WH
P850-G120-WH
P850-G200-WH
P500-G120-WH
P500-G200-WH
P850-G120-WH
P850-G200-WH
P500-G120-WH
P500-G200-WH
P850-G120-WH
P850-G200-WH
50
150
275
150
275
200
400
200
400
55
2
1
0.7
22
Min.
Typ.
Max.
100
200
100
200
Unit
I
op
mA
I
trigger
Typical current for the device to go from normal operating
state to protected state
mA
I
out
Maximum current through the device
mA
Ω
Ω
µs
mA
V
R
TBU
R
bal
t
block
I
quiescent
V
reset
Series resistance of the TBU
™
device
Line-to line series resistance difference between two TBU
™
devices
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
The P-G series TBU
™
devices are bidirectional; specifications are valid in both directions.
*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
BOURNS [ BOURNS ELECTRONIC SOLUTIONS ]
