IA
NT
Features
■
Formerly
■
■
■
■
■
■
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
The P500-G & P850-G Series are
currently available, but not recom-
mended for new designs. Bourns
®
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 bidirectional protection components, constructed
using MOSFET semiconductor technology, designed to protect
against faults caused by short circuits, AC power cross,
induction and lightning surges.
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.
Absolute Maximum Ratings (T
amb
= 25 °C)
Symbol
V
imp
V
rms
T
op
T
stg
Parameter
K.20, K.20E, K.21, K.21E, K.45
Value
P500-Gxxx-WH
P850-Gxxx-WH
P500-Gxxx-WH
P850-Gxxx-WH
500
850
300
425
-40 to +85
-65 to +150
Unit
V
V
°C
°C
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
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
device
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 ]
