Littelfuse DHB34 Varistor Series - Manual

© 2013 Littelfuse, Inc. 175
Revised: May 8, 2013
Varistor Products
DHB34 Varistor Series
Industrial High Energy Terminal Varistors > DHB34 Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/dhb34.html for current information.
HI–ENERGY
MO
V’S
DHB34 Series
DHB34 Varistor Series
Description
The DHB34 Series of transient surge suppressors is
comprised of two industrial high-energy Metal-Oxide
Varistors (MOVs) discs placed in parallel as a single device.
They are designed to provide surge suppression in the
AC mains outdoor and service entrance environment
(distribution panels) of buildings. DHB34 applications
also include industrial heavy motors, controls, and power
supplies such as used in the oil-drilling, mining, and
transportation fields, including HVAC and motor/generator
applications.
The DHB34 Series provides rigid terminals for through-
hole solder mounting on printed circuit boards, thereby
eliminating the need for screw mounting.
Features
• Lead-Free, Halogen-
Free and RoHS
Compliant
• Wide operating
voltage range
V
M(AC)RMS
110V to 750V
• High–energy
absorption
capability
W
TM
= 220J to 1050J
• High peak pulse
current (Each of
two discs placed in
parallel) capability
I
TM
= 40,000A
• Rigid terminals for
secure through-hole
solder mounting
• No derating up to
85ºC ambient
• Dual Disc Device -
two 34mm varistor
discs in parallel in
a single package.
Agency Approvals
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Agency Agency File Number
1449, E320116, 1414, E56529
LR91788
Continuous DHB34 Series Units
Steady State Applied Voltage:
AC Voltage Range (V
M(AC)RMS
) 110 to 750 V
DC Voltage Range (V
M(DC)
) 148 to 970 V
Transients:
Peak Pulse Current (I
TM
)
For 8/20μs Current Wave (See Figure 2) 40000 A
Single Pulse Energy Range
For 2ms Current Wave (W
TM
) 220 to 1050 J
Operating Ambient Temperature Range (T
A
) -55 to + 85 ºC
Storage Temperature Range (T
STG
) -55 to + 125 ºC
Temperature Coefficient (a V ) of Clamping Voltage (V
C
) at Specified Test Current <0.01 %/ºC
Hi-Pot Encapsulation (COATING Isolation Voltage Capability) 2500 V
COATING Insulation Resistance 1000 MΩ
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
RoHS