Littelfuse DHB34 User Manual
Varistor Products
Industrial High Energy Terminal Varistors > DHB34 Series
DHB34 Varistor Series
Agency Approvals
Agency Agency File Number
1449, E320116, 1414, E56529
LR91788
RoHS
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 throughhole solder mounting on printed circuit boards, thereby
eliminating the need for screw mounting.
Features
• Lead-Free, HalogenFree and RoHS
Compliant
• Wide operating
voltage range
M(AC)RMS
110V to 750V
V
• High–energy
absorption
capability
W
= 220J to 1050J
TM
• 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.
• High peak pulse
current (Each of
two discs placed in
parallel) capability
I
= 40,000A
TM
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous DHB34 Series Units
Steady State Applied Voltage:
AC Voltage Range (V
DC Voltage Range (V
Transients:
Peak Pulse Current (ITM)
For 8/20μs Current Wave (See Figure 2) 40000 A
Single Pulse Energy Range
For 2ms Current Wave (W
Operating Ambient Temperature Range (T
Storage Temperature Range (T
Temperature Coefficient (a
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.
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/dhb34.html for current information.
) -55 to + 125 ºC
STG
V
) of Clamping Voltage (VC) at Specified Test Current <0.01 %/ºC
) 110 to 750 V
M(AC)RMS
) 148 to 970 V
M(DC)
) 220 to 1050 J
TM
) -55 to + 85 ºC
A
175
Revised: May 8, 2013
DHB34 Varistor Series
MOV’S
DHB34 Series
HI–ENERGY
Varistor Products
Industrial High Energy Terminal Varistors > DHB34 Series
DHB34 Series Ratings & Specifications
Maximum Rating (85°C) Specifications (25°C)
Lead–free
and RoHS
Compliant Models
Model
Size
Disc
Dia.
(mm)
Part Number
V111DHB34 34 110 148 220 40,000
V131DHB34 34 130 175 270 40,000
V141DHB34 34 140 188 291 40,000
V151DHB34 34 150 200 300 40,000
V181DHB34 34 180 240 330 40,000 254 282 310 468 6,800
V201DHB34 34 200 265 350 40,000 283 314 345 533 6,350
V251DHB34 34 250 330 370 40,000 354 390 429 650 5,000
V271DHB34 34 275 369 400 40,000 389 430 473 730 4,500
V301DHB34 34 300 410 430 40,000 433 478 526 780 4,100
V321DHB34 34 320 420 460 40,000 462 510 561 830 3,800
V331DHB34 34 330 435 475 40,000 467 519 570 843 3,750
V351DHB34 34 350 460 500 40,000 495 550 604 894 3,600
V391DHB34 34 385 510 550 40,000 545 604 663 1,000 3,500
V421DHB34 34 420 560 600 40,000 610 680 748 1,130 3,000
V441DHB34 34 440 585 630 40,000 622 691 759 1,147 2,900
V481DHB34 34 480 640 650 40,000 670 750 825 1,240 2,700
V511DHB34 34 510 675 700 40,000 735 820 910 1,350 2,500
V551DHB34 34 550 710 755 40,000 778 864 949 1,404 2,390
V571DHB34 34 575 730 770 40,000 805 910 1000 1,480 2,200
V661DHB34 34 660 850 900 40,000 940 1050 1160 1,720 2,000
V681DHB34 34 680 875 925 40,000 962 1068 1173 1,777 1,900
V751DHB34 34 750 970 1050 40,000 1080 1200 1320 2,000 1,800
Continuous Transient
V
RMS
V
M(AC)
V
V
M(DC)
Energy
DC
(2ms)
WTM ITM Min V
Peak
Current
8 x 20μs
Varistor Voltage at 1mA
DC Test Current
N(DC)
Max VC f = 1MHz
Maximum
Clamping Voltage
at 200A
V
C
Current (8/20μs)
(V) (V) (J) (A) (V) (V) (V) (V) (pF)
1
156 173 190 288 11,600
2
184 200 228 345 10,000
3
198 220 248 375 9,000
4
212 240 268 405 8,000
Typical
Capaci-
tance
Note:
1. 40kA capability depends on applications rated up to 97V
2. 40kA capability depends on applications rated up to 115V
3. 40kA capability depends on applications rated up to 123V
4. 40kA capability depends on applications rated up to 132V
DHB34 Varistor Series
. 30kA applies if > 97 V
RMS
. 30kA applies if > 115 V
RMS
. 30kA applies if > 123 V
RMS
. 30kA applies if > 132 V
RMS
.
RMS
.
RMS
.
RMS
.
RMS
176
Revised: May 8, 2013
Please refer to www.littelfuse.com/series/dhb34.html for current information.
Specifications are subject to change without notice.
© 2013 Littelfuse, Inc.
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