Important notes
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
requirements 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 incumbent on the
customer to check and decide whether an EPCOS product with the properties described 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 life-saving 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 Material
Data Sheets on the Internet (www.epcos.com/material). Should you have any more detailed
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
foregoing for customer-specific products.
6. Unless otherwise agreed in individual contracts,
all orders are subject to the current version of
the “General Terms of Delivery for Products and Services in the Electrical Industry”
published by the German Electrical and Electronics Industry Association (ZVEI).
7. The trade names EPCOS, Alu-X, CeraDiode, CeraLink, CeraPad, CeraPlas, CSMP, CSSP,
CTVS, DeltaCap, DigiSiMic, DSSP, ExoCore, FilterCap, FormFit, LeaXield, MiniBlue, MiniCell,
MKD, MKK, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PQSine, SIFERRIT,
SIFI, SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, SIP5D, SIP5K, TFAP,
ThermoFuse, WindCap are
trademarks registered or pending
in Europe and in other countries.
Further information will be found on the Internet at www.epcos.com/trademarks.
Surge Arrester
3-Electrode-Arrester
T81-A90X
Ordering code:
B88069X8440B202
DC spark-over voltage
1) 2) 4)
Impulse spark-over voltage
4)
at 100 V/µs - for 99 % of measured values
- typical values of distribution
at 1 kV/µs
- for 99 % of measured values
- typical values of distribution
90
±
20
< 400
< 300
< 550
< 450
10
15
10
40
> 10
< 1.5
< 0.2
~ 10
~1
~ 60
~ 2.2
-40 ... +90
40/ 90/ 21
90 YY O
90
YY
O
- Nominal voltage
- Year of production
- Non radioactive
V
%
V
V
V
V
kA
kA
A
A
GΩ
pF
µs
V
A
V
g
°C
Nominal impulse discharge current (wave 8/20 µs)
5)
Single impulse discharge current
(wave 8/20 µs)
5)
Nominal alternating discharge current (50 Hz, 1 s)
5)
Alternating discharge current (50 Hz, 9 cycles)
5)
Insulation resistance at 50 V
dc 4)
Capacitance at 1 MHz
4)
Transverse delay time
3)
Arc voltage at 1 A
Glow to arc transition current
Glow voltage
Weight
Operation and storage temperature
Climatic category (IEC 60068-1)
Marking, red
1)
2)
At delivery AQL 0.65 level II, DIN ISO 2859
In ionized mode
3)
Test according to ITU-T Rec. K.12
4)
Tip or ring electrode to center electrode
5)
Total current through center electrode, half value through
tip respectively ring electrode.
Terms in accordance with ITU-T Rec. K.12 and DIN 57845/VDE0845
AB E / AB PM
Page 1 of 2
Issue 04, 23.05.2002
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