E
Series
Metal Oxide
Varistor
Up to 25,000A
Surge Current
Capability
General Purpose
85 C Maximum
Temperature
The E series metal oxide varistors from UCC/NCC are designed for high surge current capability.
These varistors are able to withstand surge currents of up to 25,000A for a short time period, as
specified in the data table. The E series varistors are ideal for use as surge protectors in applications
such as communications equipment and control devices for power distribution.
Refer to the Mini -Glossary at the end of the metal oxide varistors section for additional technical
information and specifications.
Summary of Specifications
Lug terminals.
Operating temperature range: 40 C to 85 C.
Maximum voltage range: 140 to 680VAC or 180 to 895VDC.
Standard varistor voltage tolerance: 10%
Maximum energy: 80 to 640 J depending on case size.
Maximum surge current: 8,000 to 25,000A.
Nominal case size (L W H): 48.0 14.0 42.0mm and 60.0 14.0
METAL OXIDE VARISTOR
55.0mm.
E
156
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
E Series
E Specifications
Item
Operating Temperature Range
Storage Temperature Range
Maximum Voltage Range
Varistor Voltage
Varistor Voltage Tolerance
Maximum Energy
Maximum Surge Current
Nominal Case Size (L W H)
40 to
85 C
Characteristics
50 to 110 C
140 to 680VAC or 180 to 895VDC
220 to 1,100V at 1mA DC
10% ( K )
80 to 640 Joules at 2ms
8,000 to 25,000A at 8 /20 s
48.0 14.0
42.0mm and 60.0 14.0
55.0mm
Diagram of Dimensions
Metal Oxide Varistor/Lug Terminals
E
T
Unit: mm and inches
B
A
F
G
H
L
W
Dimensions (mm)
Case
Code
20
32
L
1.0
48.0
60.0
W
1.0
14.0
14.0
H
1.0
42.0
55.0
A
1.0
39.0
51.0
B
4.3
4.3
E
24.0
24.0
F
12.0
12.0
G
5.0
5.0
T
M4
M4
Dimensions (mm)
Case
Code
20
32
L
0.039
1.890
2.632
W
0.039
0.551
0.551
H
0.039
1.654
2.165
A
0.039
1.535
2.008
B
0.169
0.169
E
0.945
0.945
F
0.472
0.472
G
0.197
0.197
T
M4
M4
METAL OXIDE VARISTOR
E
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
157
E Series
Part Numbering System for E Series
TNR
20
E
511
K
Varistor Voltage Tolerance: K =
10%
Nominal Varistor Voltage: Expressed in volts. The first two digits are
significant figures, and the third digit indicates the number of zeros
following these figures ( e.g. 511 = 510V ).
Series Name: Indicates Basic Varistor Style.
Case Code: 20 and 32.
TNR: Alpha Prefix for Varistors.
When ordering, always specify complete catalog number for E Series.
Varistor Standard Ratings - Lug Terminals
Case
Code
Catalog
Part
Number
Maximum
Applied Voltage
(Continuous)
VAC
rms
VDC
140
150
175
250
275
300
315
420
460
510
550
625
680
140
150
175
250
275
300
315
420
460
510
550
625
680
180
200
225
320
350
385
420
560
615
670
745
825
895
180
200
225
320
350
385
420
560
615
670
745
825
895
Maximum
Peak Current
(8/20µsec.)
(A)
8,000
8,000
8,000
8,000
8,000
8,000
8,000
8,000
8,000
8,000
8,000
8,000
8,000
25,000
25,000
25,000
25,000
25,000
25,000
25,000
25,000
25,000
25,000
25,000
25,000
25,000
Maximum
Energy
(2msec.)
(J )
80
95
100
130
140
150
160
175
190
215
240
245
250
200
240
260
350
400
410
420
450
500
545
600
620
640
Rated
Wattage
(W)
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
Maximum
Clamping
Voltage
(A)
(V)
100
100
100
100
100
100
100
100
100
100
100
100
100
200
200
200
200
200
200
200
200
200
200
200
200
200
360
395
445
650
710
775
840
1,120
1,240
1,355
1,500
1,650
1,815
360
395
445
650
710
775
840
1,120
1,240
1,355
1,500
1,650
1,815
Capacitance
(typical)
at 1kHz
( pF )
2,200
1,500
1,400
1,200
1,000
950
930
850
800
700
600
400
350
5,500
4,800
4,200
3,500
2,700
2,600
2,400
2,100
2,000
1,800
1,700
1,000
800
Varistor
Voltage at
1mA DC
( V 10%)
220
240
270
390
430
470
510
680
750
820
910
1,000
1,100
220
240
270
390
430
470
510
680
750
820
910
1,000
1,100
20
TNR20E221K
TNR20E241K
TNR20E271K
TNR20E391K
TNR20E431K
TNR20E471K
TNR20E511K
TNR20E681K
TNR20E751K
TNR20E821K
TNR20E911K
TNR20E102K
TNR20E112K
TNR32E221K
TNR32E241K
TNR32E271K
TNR32E391K
TNR32E431K
TNR32E471K
TNR32E511K
TNR32E681K
TNR32E751K
TNR32E821K
TNR32E911K
TNR32E102K
TNR32E112K
32
METAL OXIDE VARISTOR
E
158
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
E Series
Varistor Volt - Ampere and Pulse Lifetime Characteristics
V- I Curve
- 20 Case Code
TNR20E221K~TNR20E112K
Max. Leakage Current
Voltage (V)
5000
4000
3000
2000
1500
1000
800
700
600
500
400
300
200
150
100
80
70
60
50
40
30
10
6
Pulse Lifetime Ratings
-20 Case Code
at +20°C
Max. Clamping Voltage
Peak Pulse Current (A)
10000
7000
5000
3000
2000
1000
700
500
300
200
100
70
50
30
20
10
7
5
3
2
20
100
200
1k
2k
10k
Impulse Duration (µs)
10
2
10
3
10
4
10
5
10
6
1 Time
2
10
1
Test Condition Interval:
1~10
2
times: 2 min.
10
3
~10
6
times: 10 sec.
TNR20E221K~TNR20E112K
20E112K
20E102K
20E911K
20E821K
20E751K
20E681K
20E511K
20E471K
20E431K
20E391K
20E271K
20E241K
20E221K
10
5
10
4
10
3
10
2
10
1
10
0
10
1
10
2
10
3
5,000A Max.
10
4
Direct Current (A)
8/20
µsec.
Impulse Current (A)
V- I Curve
-32 Case Code
TNR32E221K~TNR32E112K
Max. Leakage Current
Voltage (V)
5000
4000
3000
2000
1500
1000
800
700
600
500
400
300
200
150
100
80
70
60
50
40
30
10
6
Pulse Lifetime Ratings
-32 Case Code
at +20°C
Max. Clamping Voltage
Peak Pulse Current (A)
32E112K
32E102K
32E911K
32E821K
32E751K
32E681K
32E511K
32E471K
32E431K
32E391K
32E271K
32E241K
32E221K
TNR32E221K~TNR32E112K
30k
20k
10k
7k
5k
3k
2k
1k
700
500
300
200
100
70
50
1 Time
2
10
1
10
2
Test Condition Interval:
1~10
2
times: 2 min.
10
3
~10
6
times: 10 sec.
10
3
10
4
10
5
10
6
12,000A Max.
30
20
10
7
5
3
2
20
100
200
1k
2k
10k
Impulse Duration (µs)
10
5
10
4
10
3
10
2
10
1
10
0
10
1
10
2
10
3
10
4
10
5
Direct Current (A)
8/20
µsec.
Impulse Current (A)
METAL OXIDE VARISTOR
E
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
159
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