SMD Varistors
MLV; Automotive Series
Construction
I
Multilayer technology
I
Termination: nickel barrier (CT series) or silver palladium (CN series)
I
No plastic or epoxy encapsulation assures better than UL 94 V-0 flammability rating
Features
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Sizes 0603 … 2220
I
High energy absorption,
I
I
I
I
I
I
particularly in case of load dump
Stable protection level, low leakage current
High resistance to cyclic temperature stress
Wide range of operating temperature
Low inductance (suitable for ESD protection)
PSpice models
Bidirectional clamping
Taping
I
Supply on 8/12-mm tape, for tape dimensions see pages 154/155,
for reel dimensions and packing units see page 157, chapter
“SMD Varistors: Taping”
Type designation
Detailed description of coding system on page 39, chapter
“General Technical Information”
SIOV-CT 1210 S 14 B AUTO G
EPCOS metal oxide varistor
Design
Size (nominal)
Special tolerance
of varistor voltage
General technical data
Climatic category
LCT
UCT
Damp heat, steady state
(93 % r.h., 40
°
C)
Operating temperature
Storage
temperature
1)
Response time
Solderability
55/125/56
– 55
°
C
+ 125
°
C
56 days
– 55 … + 125
°
C
– 55 … + 150
°
C
< 0,5 ns
235
°
C, 2 s
in accordance with IEC 60068-2-58
in accordance with IEC 60068-2-58
in accordance with IEC 60068-1
Taping mode
Automotive varistor
Specifies special tolerance (B)
Max. AC operating voltage
in accordance with IEC 60068-2-3
in accordance with CECC 42 000
Resistance to soldering heat 260
°
C, 10 s
1) For mounted parts (storage conditions for unused parts on reel see page 38, chapter
“General Technical Information”)
135
04/02
SMD Varistors
Automotive – Nickel Barrier Termination (available upon request)
Maximum ratings
(T
A
= 125
°
C)
Type
SIOV-
12-V supply systems
CT0603S14BAUTOG
CT0805S14BAUTOG
CT1206S14BAUTOG
CT1210S14BAUTOG
CT1812S14BAUTOG
CT2220S14BAUTOG
CT2220S14BAUTOE2G2
24-V supply systems
CT2220K25AUTOE2G2
CT2220K30AUTOG
CT2220K30AUTOE2G2
Ordering code
V
RMS
V
DC
V
B72500T1140S260
B72510T1140S262
B72520T1140S262
B72530T1140S262
B72580T1140S262
B72540T1140S262
B72540T3140S272
B72540T3250K072
B72540T1300K062
B72540T3300K072
14
14
14
14
14
14
14
25
30
30
V
16
16
16
16
16
16
16
31
34
34
i
max
W
max
8/20
m
s (2 ms)
A
J
30
120
200
400
800
1200
1200
1200
1200
1200
0,2
0,3
0,6
1,6
2,4
5,8
5,8
9,6
12,0
12,0
P
max
W
0,003
0,008
0,008
0,010
0,015
0,030
0,030
0,030
0,030
0,030
W
LD
(10x)
J
—
1,0
1,5
3,0
6,0
12,0
25,0
25,0
12,0
25,0
Characteristics
(T
A
= 25
°
C)
Type
SIOV-
12-V supply systems
CT0603S14BAUTOG
CT0805S14BAUTOG
CT1206S14BAUTOG
CT1210S14BAUTOG
CT1812S14BAUTOG
CT2220S14BAUTOG
CT2220S14BAUTOE2G2
24-V supply systems
CT2220K25AUTOE2G2
CT2220K30AUTOG
CT2220K30AUTOE2G2
D
V
v
V
Jump
V
v
Max. clamping
C
typ
L
typ
(5 min) (1 mA) (1 mA)
(1 kHz)
voltage
v
i
nH
V
V
%
nF
V
A
24,5
24,5
24,5
24,5
24,5
24,5
24,5
40,0
45,0
45,0
22
22
22
22
22
22
22
39
47
47
+23/–0
+23/–0
+23/–0
+23/–0
+23/–0
+23/–0
+23/–0
42
42
40
40
40
40
40
65
77
77
1,0
1,0
1,0
2,5
5,0
10,0
10,0
10,0
10,0
10,0
0,12
0,4
0,8
1,7
5,6
9,5
15,0
10,0
4,0
10,0
1,0
1,5
1,8
1,8
2,5
3,0
3,0
3,0
3,0
3,0
Der.
V/I
curve char.
Page Page
238
239
240
242
244
245
245
245
245
245
272
272
272
272
272
272
272
271
271
271
±
10
±
10
±
10
Notes
I
If the maximum loads specified for load dump and jump start are fully utilized, subsequent
polarity reversal of the AUTO varistors is inadmissible.
I
If the load remains under the maximum ratings, polarity reversal may be admissible.
Contact EPCOS for consultancy on this kind of problem.
I
Load dump or jump start can decrease the varistor voltage in load direction by max. 15 %.
I
Load dump: min. time of energy input 40 ms, interval 60 s.
(The load dump time constant
t
d
differs from the time constant of the energy input)
136
04/02
SMD Varistors
Automotive – Silver Palladium Termination
Maximum ratings
(T
A
= 125
°
C)
Type
SIOV-
12-V supply systems
CN0603S14BAUTOG
CN0805S14BAUTOG
CN1206S14BAUTOG
CN1210S14BAUTOG
CN1812S14BAUTOG
CN2220S14BAUTOG
CN2220S14BAUTOE2G2
24-V supply systems
CN2220K25AUTOE2G2
CN2220K30AUTOG
CN2220K30AUTOE2G2
Ordering code
V
RMS
V
DC
V
B72500V1140S260
B72510V1140S262
B72520V1140S262
B72530V1140S262
B72580V1140S262
B72540V1140S262
B72540V3140S272
B72540V3250K072
B72540V1300K062
B72540V3300K072
14
14
14
14
14
14
14
25
30
30
V
16
16
16
16
16
16
16
31
34
34
i
max
W
max
8/20
m
s (2 ms)
A
J
30
120
200
400
800
1200
1200
1200
1200
1200
0,2
0,3
0,6
1,6
2,4
5,8
5,8
9,6
12,0
12,0
P
max
W
0,003
0,008
0,008
0,010
0,015
0,030
0,030
0,030
0,030
0,030
W
LD
(10x)
J
—
1,0
1,5
3,0
6,0
12,0
25,0
25,0
12,0
25,0
Characteristics
(T
A
= 25
°
C)
Type
SIOV-
12-V supply systems
CN0603S14BAUTOG
CN0805S14BAUTOG
CN1206S14BAUTOG
CN1210S14BAUTOG
CN1812S14BAUTOG
CN2220S14BAUTOG
CN2220S14BAUTOE2G2
24-V supply systems
CN2220K25AUTOE2G2
CN2220K30AUTOG
CN2220K30AUTOE2G2
D
V
v
V
Jump
V
v
Max. clamping
C
typ
L
typ
(5 min) (1 mA) (1 mA)
(1 kHz)
voltage
v
i
nH
V
V
%
nF
V
A
24,5
24,5
24,5
24,5
24,5
24,5
24,5
40,0
45,0
45,0
22
22
22
22
22
22
22
39
47
47
+23/–0
+23/–0
+23/–0
+23/–0
+23/–0
+23/–0
+23/–0
42
42
40
40
40
40
40
65
77
77
1,0
1,0
1,0
2,5
5,0
10,0
10,0
10,0
10,0
10,0
0,12
0,4
0,8
1,7
5,6
9,5
15,0
10,0
4,0
10,0
1,0
1,5
1,8
1,8
2,5
3,0
3,0
3,0
3,0
3,0
Der.
V/I
curve char.
Page Page
238
239
240
242
244
245
245
245
245
245
272
272
272
272
272
272
272
271
271
271
±
10
±
10
±
10
Notes
I
If the maximum loads specified for load dump and jump start are fully utilized, subsequent
polarity reversal of the AUTO varistors is inadmissible.
I
If the load remains under the maximum ratings, polarity reversal may be admissible.
Contact EPCOS for consultancy on this kind of problem.
I
Load dump or jump start can decrease the varistor voltage in load direction by max. 15 %.
I
Load dump: min. time of energy input 40 ms, interval 60 s.
(The load dump time constant
t
d
differs from the time constant of the energy input)
137
04/02
SMD Varistors
MLV; Automotive Series
b
h
Weight: < 0,2 g
Termination acc. CECC 32101-801
Dimensions
Type
SIOV-CT/CN0603
SIOV-CT/CN0805
SIOV-CT/CN1206
SIOV-CT/CN1210
SIOV-CT/CN1812
SIOV-CT/CN2220
I
mm
1,6
±
0,15
2,0
±
0,20
3,2
±
0,30
3,2
±
0,30
4,5
±
0,40
5,7
±
0,40
b
mm
0,80
±
0,10
1,25
±
0,15
1,60
±
0,20
2,50
±
0,25
3,20
±
0,30
5,00
±
0,40
h
mm
0,9 max.
1,4 max.
1,7 max.
1,7 max.
2,5 max.
2,5 max.
k
mm
0,1 … 0,4
0,13 … 0,75
0,25 … 0,75
0,25 … 0,75
0,25 … 1,0
0,25 … 1,0
VAR0406-M
Termination: nickel barrier (CT) or silver palladium (CN)
B
C
B
A
D
VAR0391-D
Recommended solder pad layout
Type
SIOV-CT/CN0603
SIOV-CT/CN0805
SIOV-CT/CN1206
SIOV-CT/CN1210
SIOV-CT/CN1812
SIOV-CT/CN2220
A
mm
1,0
1,4
1,8
2,8
3,6
5,5
B
mm
1,0
1,2
1,2
1,2
1,5
1,5
C
mm
1,0
1,0
2,1
2,1
3,0
4,2
D
mm
3,0
3,4
4,5
4,5
6,0
7,2
138
04/02
A
k
Herausgegeben von EPCOS AG
Unternehmenskommunikation, Postfach 80 17 09, 81617 München, DEUTSCHLAND
++49 89 636 09, FAX (0 89) 636-2 26 89
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zuholen.
Published by EPCOS AG
Corporate Communications, P.O. Box 80 17 09, 81617 Munich, GERMANY
++49 89 636 09, FAX (0 89) 636-2 26 89
EPCOS AG 2002. Reproduction, publication and dissemination of this brochure and the information contained therein without
EPCOS’ prior express consent is prohibited.
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This brochure replaces the previous edition.
For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or the international Representa-
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