Littelfuse FBMOV Varistor Series - Manual (Page 2)

© 2013 Littelfuse, Inc. 250
Revised: May 8, 2013
Varistor Products
FBMOV Varistor Series
Industrial High Energy Terminal Varistors > FBMOV Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ba or /bb.html for current information.
For applications exceeding 85° C, ambient temperatures, the peak
surge current and energy rating must be reduces as shown in
Figure 1.
Peak Current, Energy and Power De-rating Curve
100
90
80
70
60
50
40
30
20
10
0
-55 50 60 70 80 90 100 110 120 130 140 150
AMBIENT TEMPERATURE ( o C)
PERCENT OF R
A
TED
V
ALUE
100
90
50
10
O
1 T
T
1
T 2
TIME
PERCENT OF PEAK
V
ALUE
Peak Pulse Current Test Waveform
0
1
= Virtual Origin of Wave
T = Time from 10% to 90% of Peak
T
1
= Rise Time = 1.25 x T
T
2
= Decay Time
Example - For an 8/20 μs Current Waveform:
8μs = T
1
= Rise Time
20μs = T
2
= Decay Time
FBMOV Series Ratings & Specifications
Part
Number
Maximum Rating (85°C) Specifications (25°C)
Continuous Transient
Varistor Voltage at 1mA
DC Test Current
Maximum
Clamping Volt
V
C
at 200A
Current (8/20μs)
Typical
Capaci-
tance f =
1MHz
AC Volts DC Volts
Energy
(2ms)
Peak
Current
8 x 20μs
V
M(AC)RMS
V
M(DC)
W
TM
I
TM
Min V
N(DC)
Max V
C
C
(V) (V) (J) (A) (V) (V) (V) (V) (pF)
FBMOV115M 115 150 340 40000 162 180 198 295 6400
FBMOV130M 130 170 380 40000 184 205 226 335 5600
FBMOV140M 140 180 420 40000 200 220 240 355 5000
FBMOV150M 150 200 440 40000 216 240 264 390 4600
FBMOV175M 175 225 500 40000 243 270 297 450 3800
FBMOV230M 230 300 600 40000 324 360 396 585 3000
FBMOV250M 250 320 660 40000 351 390 429 640 2800
FBMOV275M 275 350 700 40000 387 430 473 700 2500
FBMOV300M 300 385 740 40000 423 470 517 765 2300
FBMOV320M 320 420 780 40000 459 510 561 825 2160
FBMOV385M 385 505 860 40000 558 620 682 1010 1800
FBMOV420M 420 560 920 40000 612 680 748 1100 1640
FBMOV440M 440 585 940 40000 643 715 787 1160 1580
FBMOV460M 460 615 980 40000 675 750 825 1220 1500
FBMOV510M 510 670 1040 40000 738 820 902 1335 1360
FBMOV550M 550 745 1100 40000 819 910 1001 1475 1260
FBMOV625M 625 825 1200 40000 900 1000 1100 1625 1110
FBMOV750M 750 970 1340 40000 1080 1200 1320 1950 920
NOTE: Average power dissipation of transients not to exceed 2.5W. See Figures 3 and 4 for more information on power dissipation.