TBU-KE040-500-WH Datasheet, PDF (1/6 Pages) Bourns Electronic Solutions – TBU-KE Series - TBU High-Speed Protectors

*RoHS ^COMPLIANT
00E722550
Features
■ Superior circuit protection
■ Overcurrent and overvoltage protection
■ Blocks surges up to rated limits
■ High-speed performance
■ Small SMT package
■ RoHS compliant*
■ Agency recognition:
Applications
■ Set top box LNB ports
■ Protection modules and dongles
■ Process control equipment
■ Test and measurement equipment
■ General electronics
TBU-KE Series - TBU^® High-Speed Protectors
General Information
The TBU-KE Series of Bourns^® TBU^®
(Transient Blocking Unit) products are very
Line Side
low capacitance unidirectional high-speed
surge protection components designed to protect
against faults caused by short circuits, AC
power cross, induction and lightning surges.
1
2
TBU^® Device
Load Side
The TBU-KE is a unidirectional TBU^® device: the TBU^® protector will trip in less than
1 μs when the current reaches the maximum value in one direction only, that is when
Pin 1 is positive in voltage with respect to Pin 2. No current limiting exists in the oppo-
site polarity, and the TBU^® protector appears as resistive in nature. The reverse current
should not exceed the maximum trigger current level of the TBU^® device. An external
diode may be used to prevent reverse current in DC biased applications.
The TBU^® protector blocks surges and provides an effective barrier behind which sensi-
tive electronics will not be exposed to large voltages or currents during surge events.
After the surge, the TBU^® device resets when the voltage across the TBU^® device falls
to the V_reset level. The TBU^® device will automatically reset on lines which have no DC
bias or have DC bias below V_reset (such as unpowered signal lines).
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.
Agency Approval
Description
UL
File Number: E315805
Absolute Maximum Ratings (@ T_A = 25 °C Unless Otherwise Noted)
Symbol Parameter
Part Number
Value
Unit
TBU-KE025-xxx-WH
250
V_imp
Peak impulse voltage withstand with duration less than 10 ms TBU-KE040-xxx-WH
400
V
TBU-KE050-xxx-WH
500
V_rms
Continuous A.C. RMS voltage
TBU-KE025-xxx-WH
100
TBU-KE040-xxx-WH
200
V
TBU-KE050-xxx-WH
250
T_op
Operating temperature range
T_stg
Storage temperature range
-40 to +125
°C
-65 to +150
°C
Asia-Pacific: Tel: [phone] • Fax: [phone]
Europe: Tel: [phone] • Fax: [phone]
The Americas: Tel: [phone] • Fax: [phone]
www.bourns.com
*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.