SIOV metal oxide varistors
Leaded varistors, Automotive series
Series/Type: B722*
Date: December 2011
© EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
Construction
Round varistor element, leaded
Coating: epoxy resin (D1: phenolic resin),
flame-retardant to UL 94 V-0
Features
High energy absorption,
particularly for load dump
Jump-start strength
Stable protection level, minimum leakage current
High resistance to cyclic temperature stress
PSpice models
High operating temperature range up to 125 °C
Delivery mode
Bulk (standard), taped versions on reel or in Ammo pack upon request.
For further details refer chapter "Taping, packaging and lead configuration" for leaded
varistors.
General technical data
Climatic category to IEC 60068-1 40/85/56
for D1 types 40/125/56
Operating temperature to IEC 61051 40 ... + 85 °C
for D1 types 40 ... +125 °C
Storage temperature 40 ... +125 °C
for D1 types 40 ... +150 °C
Electric strength to IEC 61051 ≥2.5 (not D1 types) kVRMS
Insulation resistance to IEC 61051 ≥100 (not D1 types) MΩ
Response time < 25 ns
Leaded varistors B722*
Automotive series
Page 2 of 24Please read Cautions and warnings and
Important notes at the end of this document.
Electrical specifications and ordering codes
Maximum ratings (TA=85°C, TA= 125 °C for S...D1 types)
Ordering code Type
(untaped)
SIOV-
VRMS
V
VDC
V
imax
(8/20 µs)
A
Wmax
(2 ms)
J
Pmax
W
WLD
(10 x)
J
12-V supply systems
B72207S1140K201 S07K14AUTOS2D1 14 16 250 0.9 0.02 12
B72210S1140K102 S10K14AUTO 14 16 500 2.0 0.05 25
B72210S1140K501 S10K14AUTOS5D1 14 16 500 2.0 0.05 25
B72214S1140K102 S14K14AUTO 14 16 1000 4.0 0.10 50
B72214S1140K501 S14K14AUTOS5D1 14 16 1000 4.0 0.10 50
B72220S1140K102 S20K14AUTO 14 16 2000 12.0 0.20 100
B72210S1170K102 S10K17AUTO 17 20 500 2.5 0.05 25
B72214S1170K102 S14K17AUTO 17 20 1000 5.0 0.10 50
B72220S1170K102 S20K17AUTO 17 20 2000 14.0 0.20 100
24-V supply systems
B72220S1250K102 S20K25AUTO 25 28 2000 22.0 0.20 100
B72214S1300K102 S14K30AUTO 30 34 1000 9.0 0.10 50
B72220S1300K102 S20K30AUTO 30 34 2000 26.0 0.20 100
Leaded varistors B722*
Automotive series
Page 3 of 24Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (TA=25°C)
Ordering code VJump
(5 min)
V
Vv
(1 mA)
V
∆Vv
(1 mA)
%
vc,max
(ic)
V
ic
A
Ctyp
(1 kHz)
nF
12-V supply systems
B72207S1140K201 25 22 ±10 43 2.5 2.3
B72210S1140K102 25 22 ±10 43 5.0 5.2
B72210S1140K501 25 22 ±10 43 5.0 5.2
B72214S1140K102 25 22 ±10 43 10.0 10.0
B72214S1140K501 25 22 ±10 43 10.0 10.0
B72220S1140K102 25 22 ±10 43 20.0 19.0
B72210S1170K102 30 27 ±10 53 5.0 4.4
B72214S1170K102 30 27 ±10 53 10.0 8.2
B72220S1170K102 30 27 ±10 53 20.0 15.6
24-V supply systems
B72220S1250K102 40 39 ±10 77 20.0 11.1
B72214S1300K102 45 47 ±10 93 10.0 5.0
B72220S1300K102 45 47 ±10 93 20.0 9.4
Note:
If the maximum loads specified for load dump and jump start are fully utilized, subsequent
polarity reversal of the AUTO varistors is inadmissible.
If the load remains under the maximum ratings, polarity reversal may be admissible.Contact
EPCOS for consultancy on this kind of problem.
Load dump or jump start can decrease the varistor voltage in load direction by max. 15%.
Load dump: min. time of energy input 40 ms, interval 60 s.
Leaded varistors B722*
Automotive series
Page 4 of 24Please read Cautions and warnings and
Important notes at the end of this document.
Dimensional drawings Weight
Nominal diameter
mm
VRMS
V
Weight
g
7 14 0.6 ... 0.8
10 14; 17 1.0 ... 2.0
14 14; 17; 30 2.0 ... 4.0
20 14; 17; 25; 30 3.0 ... 6.0
Dimensions
Ordering code [e] ±1
mm
a±1
mm
wmax
mm
thmax
mm
hmax
mm
lmin
mm
d±0.05
mm
VRMS = 14 V
B72207S1140K201 5.0 1.3 9.0 3.5 12.5 25.0 0.6
B72210S1140K102 7.5 1.5 13.0 5.0 16.5 25.0 0.8
B72210S1140K501 7.5 1.5 12.0 4.0 16.0 25.0 0.8
B72214S1140K102 7.5 1.5 17.0 5.0 20.5 25.0 0.8
B72214S1140K501 7.5 1.5 16.0 4.0 20.0 25.0 0.8
B72220S1140K102 10.0 1.6 23.0 5.4 27.5 25.0 1.0
VRMS = 17 V
B72210S1170K102 7.5 1.6 13.0 5.1 16.5 25.0 0.8
B72214S1170K102 7.5 1.7 17.0 5.1 20.5 25.0 0.8
B72220S1170K102 10.0 1.6 23.0 5.6 27.5 25.0 1.0
VRMS = 25 V
B72220S1250K102 10.0 2.9 23.0 6.2 27.5 25.0 1.0
VRMS = 30 V
B72214S1300K102 7.5 1.8 17.0 5.3 20.5 25.0 0.8
B72220S1300K102 10.0 3.2 23.0 6.5 27.5 25.0 1.0
For crimp styles S2 and S5 refer to chapter "Taping, packaging and lead configuration".
Leaded varistors B722*
Automotive series
Page 5 of 24Please read Cautions and warnings and
Important notes at the end of this document.
Reliability data
Test Test methods/conditions Requirement
Varistor voltage The voltage between two terminals with
the specified measuring current applied
is called VV(1 mADC @ 0.2 ... 2 s).
To meet the specified value
Clamping voltage The maximum voltage between two
terminals with the specified standard
impulse current (8/20 µs) applied.
To meet the specified value
Max. DC operating voltage MIL STD 202F, method 108A, UCT,
VDC, 1000 h
|∆V/V (1 mA)| ≤10%
No visible damage
Load dump ISO 7637-1, test pulse 5 (“load dump”)
(DIN 40 839 Part 1; impulse 5)
7 mm varistors (S07K…AUTO…):
10 ×12 J
10 mm varistors (S10K…AUTO…):
10 ×25 J
14 mm varistors (S14K…AUTO…):
10 ×50 J
20 mm varistors (S20K…AUTO…):
10 ×100 J
(minimum 40 ms time of energy input,
60 s interval)
∆V/V (1 mA) ≥-15%
No visible damage
Jump start VDC, load = Vjump; 5 min duration
14 V (S…K14AUTO…); Vjump = 25 V
17 V (S…K17AUTO…); Vjump = 30 V
25 V (S…K25AUTO…); Vjump = 40 V
30 V (S…K30AUTO…); Vjump = 45 V
∆V/V (1 mA) ≥-15%
No visible damage
Fast temperature cycling IEC 60068-2-14, test Na, LCT/UCT,
dwell time 15 min, 100 cycles
for SIOV…AUTO types and dwell time
15 min, 1000 cycles for
SIOV…AUTOD1 types
|∆V/V (1 mA)| ≤5%
No visible damage
Damp heat IEC 60068-2-67, test Cy, 85 °C,
85% r. H., VDC, 1000 h
|∆V/V (1 mA)| ≤10%
No visible damage
Note:
UCT = Upper category temperature
LCT = Lower category temperature
Leaded varistors B722*
Automotive series
Page 6 of 24Please read Cautions and warnings and
Important notes at the end of this document.
v/i characteristics
v = f (i) - for explanation of the characteristics refer to "General technical information", 1.6.3
A = Leakage current, B = Protection level } for worst-case varistor tolerances
SIOV-S07 ... D1
Leaded varistors B722*
Automotive series
Page 7 of 24Please read Cautions and warnings and
Important notes at the end of this document.
v/i characteristics
v = f (i) - for explanation of the characteristics refer to "General technical information", 1.6.3
A = Leakage current, B = Protection level } for worst-case varistor tolerances
SIOV-S10 ... (AUTO)( D1)
Leaded varistors B722*
Automotive series
Page 8 of 24Please read Cautions and warnings and
Important notes at the end of this document.
v/i characteristics
v = f (i) - for explanation of the characteristics refer to "General technical information", 1.6.3
A = Leakage current, B = Protection level } for worst-case varistor tolerances
SIOV-S14 ... (AUTO)( D1)
Leaded varistors B722*
Automotive series
Page 9 of 24Please read Cautions and warnings and
Important notes at the end of this document.
v/i characteristics
v = f (i) - for explanation of the characteristics refer to "General technical information", 1.6.3
A = Leakage current, B = Protection level } for worst-case varistor tolerances
SIOV-S20 ... AUTO
Leaded varistors B722*
Automotive series
Page 10 of 24Please read Cautions and warnings and
Important notes at the end of this document.
Derating curves
Maximum surge current imax = f (tr, pulse train)
For explanation of the derating curves refer to "General technical information", section 1.8.1
SIOV-S07K14AUTOS2D1
SIOV-S10K14AUTO ... K17AUTO SIOV-S10K14AUTOS5D1
Leaded varistors B722*
Automotive series
Page 11 of 24Please read Cautions and warnings and
Important notes at the end of this document.
Derating curves
Maximum surge current imax = f (tr, pulse train)
For explanation of the derating curves refer to "General technical information", section 1.8.1
SIOV-S14K14AUTO ... K30AUTO SIOV-S14K14AUTOS5D1
SIOV-S20K14AUTO ... K30AUTO
Leaded varistors B722*
Automotive series
Page 12 of 24Please read Cautions and warnings and
Important notes at the end of this document.
Taping, packaging and lead configuration
1 EPCOS ordering code system
For leaded varistors
B722 10 S 2 271 K 1 0 1
Monolithic
varistor
Nominal
disc diameter
Design:
S=Leaded varistor
T = ThermoFuse
F = Fail-safe varistor
Q = EnergetiQ
Series:
0 = StandarD
1 = Automotive
2 = AdvanceD
3 = SuperioR
4 = SuperioR
Max. AC operating voltage:
271 = 27 101= 275 VAC
140 = 14 100= 14 VAC
141 = 14 101= 140 VAC
Tolerance of varistor voltage:
K=±10%
J=±5%
S = Special tolerance
Lead configuration:
1 = Straight leads
2 thru 5 = Kinked form
Packaging:
0 = Bulk,
1 thru 7 = Taping style
Internal coding:
1 = Standard
Leaded varistors B722*
Automotive series
Page 13 of 24Please read Cautions and warnings and
Important notes at the end of this document.
2 Taping and packaging of leaded varistors
Tape packaging for lead spacing = 5 fully conforms to IEC 60286-2, while for lead spacings
= 7.5 and 10 the taping mode is based on this standard.
2.1 Taping in accordance with IEC 60286-2 for lead spacing 5.0 mm
2.2 Taping based on IEC 60286-2 for lead spacing 7.5 and 10 mm
Leaded varistors B722*
Automotive series
Page 14 of 24Please read Cautions and warnings and
Important notes at the end of this document.
2.3 Tape dimensions (in mm)
Sym-
bol
= 5.0 Tolerance = 7.5 Tolerance = 10.0 Tolerance Remarks
w max. max. max. see tables in
each series
th max. max. max. under
"Dimensions"
d 0.6 ±0.05 0.8 ±0.05 1.0 ±0.05
P012.7 ±0.3 12.71) ±0.3 12.7 ±0.3 ±1 mm/20
sprocket holes
P13.85 ±0.7 8.95 ±0.8 7.7 ±0.8
F 5.0 +0.6/0.1 7.5 ±0.8 10.0 ±0.8
∆h 0 ±2.0 depends on s depends on s measured at
∆p 0 ±1.3 0 ±2.0 0 ±2.0 top of compo-
nent body
W 18.0 ±0.5 18.0 ±0.5 18.0 ±0.5
W05.5 min. 11.0 min. 11.0 min. Peel-off
force > 5 N
W19.0 ±0.5 9.0 +0.75/0.5 9.0 +0.75/0.5
W23.0 max. 3.0 max. 3.0 max.
H 18.0 +2.0/0 18.0 +2.0/0 18.0 +2.0/02)
H016.0
(18.0) ±0.5 16.0
(18.0) ±0.5 16.0 ±0.5 3)
H132.2 max. 45.0 max. 45.0 max.
D04.0 ±0.2 4.0 ±0.2 4.0 ±0.2
t 0.9 max. 0.9 max. 0.9 max. without lead
L 11.0 max. 11.0 max. 11.0 max.
l 4.0 max.
1) Taping with P0= 15.0 mm upon request
2) Applies only to uncrimped types
3) Applies only to crimped types (H0= 18 upon request)
Leaded varistors B722*
Automotive series
Page 15 of 24Please read Cautions and warnings and
Important notes at the end of this document.
2.4 Taping mode
Example: B72210S0271K1 51
|
Digit 14
Digit 14 Taping
mode
Reel type Seating plane height H0
for crimped types
mm
Seating plane height H
for uncrimped types
mm
Pitch distance
P0
mm
0Bulk
1 G I 16 18 12.7
2 G2 I 18 12.7
3 G3 II 16 18 12.7
4 G4 II 18 12.7
5 G5 III 16 18 12.7
6 GA Ammo pack 16 18 12.7
7 G2A Ammo pack 18 12.7
Internal coding for special taping
G6 III 18 12.7
G10 II 16 18 15.0
G11 II 18 15.0
G10A Ammo pack 16 18 15.0
G11A Ammo pack 18 15.0
Leaded varistors B722*
Automotive series
Page 16 of 24Please read Cautions and warnings and
Important notes at the end of this document.
2.5 Reel dimension
Dimensions (in mm)
Reel type d f n w
I 360 max. 31 ±1 approx. 45 54 max.
II 360 max. 31 ±1 approx. 55 64 max.
III 500 max. 23 ±1 approx. 59 72 max.
If reel type III is not compatible with insertion equipment because of its large diameter, nominal
disk diameter 10 mm and 14 mm can be supplied on reel II upon request (taping mode G3).
2.6 Ammo pack dimensions
Leaded varistors B722*
Automotive series
Page 17 of 24Please read Cautions and warnings and
Important notes at the end of this document.
3 Lead configuration
Straight leads are standard for disk varistors. Other lead configurations as crimp style or cus-
tomer-specific lead wire length according to 3.1, 3.2, 3.3 and 3.4 are optional. Crimped leads
(non-standard) are differently crimped for technical reasons; the individual crimp styles are denot-
ed by consecutive numbers (S, S2 through S5) as shown in the dimensional drawings below.
The crimp styles of the individual types can be seen from the type designation in the ordering ta-
bles.
3.1 Crimp style mode
Example: B72210S0271K 501
|
Digit 13
Digit 13 of ordering code Crimp style Figure
1 Standard, straight leads 1
2 S2 2
3 S3 3
4 S4 4
5 S5 5
Available upon request
Internal coding 6
3.2 Standard leads and non-standard crimp styles
Standard, straight leads Non-standard,
crimp style S2
Non-standard,
crimp style S3
Figure 1 Figure 2 Figure 3
Leaded varistors B722*
Automotive series
Page 18 of 24Please read Cautions and warnings and
Important notes at the end of this document.
Non-standard, crimp style S4 Non-standard, crimp style S5
Figure 4 Figure 5
3.3 Component height (hmax) for crimped versions (non-standard)
Due to technical reasons the component height (hmax) increases if a crimp is added. The maxi-
mum height of the crimped component can be found in the table below.
Nominal diameter
mm
VRMS
V
Crimp style
mm
hmax
mm
5 11 ... 175 S2 5.0 10.0
5 210 ... 460 S3 5.0 10.0
7 11 ... 175 S2 5.0 12.0
7 210 ... 460 S3 5.0 12.0
10 11 ... 300 S5 7.5 15.5
10 320 ... 460 S3/S5 7.5 16.5
10 510 S3/S5 7.5 17.5
10 Automotive S5 7.5 17.0
10 Automotive (D1 types) S5 7.5 16.0
10 11 ... 175 S4 5.0 16.5
10 210 ... 460 S3 5.0 16.5
14 11 ... 300 S5 7.5 20.0
14 320 ... 460 S3/S5 7.5 20.0
14 510 S3/S5 7.5 21.5
14 Automotive S5 7.5 21.0
14 Automotive (D1 types) S5 7.5 20.0
20 11 ... 320 S5 10.0 27.0
20 385 ... 510 S5 10.0 27.5
Leaded varistors B722*
Automotive series
Page 19 of 24Please read Cautions and warnings and
Important notes at the end of this document.
3.4 Trimmed leads (non-standard)
Varistors with cut leads available upon request.
Lead length tolerances:
Straight leads +/1.0 mm
Crimped leads +/0.8 mm
Minimum lead length 3.5 mm
Figure 6
Leaded varistors B722*
Automotive series
Page 20 of 24Please read Cautions and warnings and
Important notes at the end of this document.
Cautions and warnings
General
1. EPCOS metal oxide varistors are designed for specific applications and should not be used
for purposes not identified in our specifications, application notes and data books unless oth-
erwise agreed with EPCOS during the design-in-phase.
2. Ensure suitability of SIOVs through reliability testing during the design-in phase. SIOVs
should be evaluated taking into consideration worst-case conditions.
3. For applications of SIOVs in line-to-ground circuits based on various international and local
standards there are restrictions existing or additional safety measures required.
Storage
1. Store SIOVs only in original packaging. Do not open the package before storage.
2. Storage conditions in original packaging:
Storage temperature: 25 °C ... +45 °C,
Relative humidity: <75% annual average,
<95% on maximum 30 days a year.
Dew precipitation: is to be avoided.
3. Avoid contamination of an SIOV's during storage, handling and processing.
4. Avoid storage of SIOVs in harmful environments that can affect the function during long-term
operation (examples given under operation precautions).
5. The SIOV type series should be soldered within the time specified:
SIOV-S, -Q, -LS, -B, -SFS 24 months
ETFV 12 months.
Handling
1. SIOVs must not be dropped.
2. Components must not be touched with bare hands. Gloves are recommended.
3. Avoid contamination of the surface of SIOV electrodes during handling, be careful of the
sharp edge of SIOV electrodes.
Soldering (where applicable)
1. Use rosin-type flux or non-activated flux.
2. Insufficient preheating may cause ceramic cracks.
3. Rapid cooling by dipping in solvent is not recommended.
4. Complete removal of flux is recommended.
Leaded varistors B722*
Automotive series
Page 21 of 24Please read Cautions and warnings and
Important notes at the end of this document.
Mounting
1. Potting, sealing or adhesive compounds can produce chemical reactions in the SIOV ceramic
that will degrade the component’s electrical characteristics.
2. Overloading SIOVs may result in ruptured packages and expulsion of hot materials. For this
reason SIOVs should be physically shielded from adjacent components.
Operation
1. Use SIOVs only within the specified temperature operating range.
2. Use SIOVs only within the specified voltage and current ranges.
3. Environmental conditions must not harm SIOVs. Use SIOVs only in normal atmospheric con-
ditions. Avoid use in deoxidizing gases (chlorine gas, hydrogen sulfide gas, ammonia gas,
sulfuric acid gas etc), corrosive agents, humid or salty conditions.Contact with any liquids and
solvents should be prevented.
Leaded varistors B722*
Automotive series
Page 22 of 24Please read Cautions and warnings and
Important notes at the end of this document.
Symbols and terms
Symbol Term
C Capacitance
Ctyp Typical capacitance
i Current
icCurrent at which Vc, max is measured
Ileak Leakage current
imax Maximum surge current (also termed peak current)
Imax Maximum discharge current to IEC 61643-1
Inom Nominal discharge current to IEC 61643-1
LCT Lower category temperature
Ltyp Typical inductance
Pmax Maximum average power dissipation
Rins Insulation resistance
Rmin Minimum resistance
TAAmbient temperature
trDuration of equivalent rectangular wave
UCT Upper category temperature
v Voltage
Vclamp Clamping voltage
vc, max Maximum clamping voltage at specified current ic
VDC DC operating voltage
Vjump Maximum jump start voltage
vmax Maximum voltage
Vop Operating voltage
VRMS AC operating voltage, root-mean-square value
VRMS, op, max Root-mean-square value of max. DC operating voltage incl. ripple current
Vsurge Super imposed surge voltage
VVVaristor voltage
∆VVTolerance of varistor voltage
WLD Maximum load dump
Wmax Maximum energy absorption
Lead spacing
All dimensions are given in mm.
The commas used in numerical values denote decimal points.
Leaded varistors B722*
Automotive series
Page 23 of 24Please read Cautions and warnings and
Important notes at the end of this document.
The following applies to all products named in this publication:
1. Some parts of this publication contain statements about the suitability of our products for
certain areas of application. These statements are based on our knowledge of typical re-
quirements that are often placed on our products in the areas of application concerned. We
nevertheless expressly point out that such statements cannot be regarded as binding
statements about the suitability of our products for a particular customer application.
As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar
with them than the customers themselves. For these reasons, it is always ultimately incum-
bent on the customer to check and decide whether an EPCOS product with the properties de-
scribed in the product specification is suitable for use in a particular customer application.
2. We also point out that in individual cases, a malfunction of electronic components or
failure before the end of their usual service life cannot be completely ruled out in the
current state of the art, even if they are operated as specified. In customer applications
requiring a very high level of operational safety and especially in customer applications in
which the malfunction or failure of an electronic component could endanger human life or
health (e.g. in accident prevention or lifesaving systems), it must therefore be ensured by
means of suitable design of the customer application or other action taken by the customer
(e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by
third parties in the event of malfunction or failure of an electronic component.
3. The warnings, cautions and product-specific notes must be observed.
4. In order to satisfy certain technical requirements, some of the products described in this
publication may contain substances subject to restrictions in certain jurisdictions (e.g.
because they are classed as hazardous). Useful information on this will be found in our Ma-
terial Data Sheets on the Internet (www.epcos.com/material). Should you have any more de-
tailed questions, please contact our sales offices.
5. We constantly strive to improve our products. Consequently, the products described in this
publication may change from time to time. The same is true of the corresponding product
specifications. Please check therefore to what extent product descriptions and specifications
contained in this publication are still applicable before or when you place an order. We also
reserve the right to discontinue production and delivery of products. Consequently, we
cannot guarantee that all products named in this publication will always be available. The
aforementioned does not apply in the case of individual agreements deviating from the fore-
going for customer-specific products.
6. Unless otherwise agreed in individual contracts, all orders are subject to the current ver-
sion of the "General Terms of Delivery for Products and Services in the Electrical In-
dustry" published by the German Electrical and Electronics Industry Association
(ZVEI).
7. The trade names EPCOS, BAOKE, Alu-X, CeraDiode, CSMP, CSSP, CTVS, DeltaCap,
DigiSiMic, DSSP, FormFit, MiniBlue, MiniCell, MKD, MKK, MLSC, MotorCap, PCC,
PhaseCap, PhaseCube, PhaseMod, PhiCap, SIFERRIT, SIFI, SIKOREL, SilverCap,
SIMDAD, SiMic, SIMID, SineFormer, SIOV, SIP5D, SIP5K, ThermoFuse, WindCap are trade-
marks registered or pending in Europe and in other countries. Further information will be
found on the Internet at www.epcos.com/trademarks.
Important notes
Page 24 of 24
