Surge arrester
2-electrode arrester
Series/Type: A81-A75X
Ordering code: B88069X3881****
Version/Date: Issue 04 / 2012-11-20
Version: 6
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Identification/Classification 1:
(header 1 + top left header bar) Surge arrester
Identification/Classification 2:
(header 2 + bottom left header bar) 2-electrode arrester
Ordering code:
(top right header bar) B88069X3881****
Series/Type:
(top right header bar) A81-A75X
EPCOS AG 2015. Reproduction, publication and dissemination of this public ation, enclosures hereto and the inform ation
contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
Surge arrester B88069X3881****
2-electrode arrester A81-A75X
PPD AB PD / PPD AB PM Issue 04 / 2012-11-20
Please read Cautions and warnings and Page 2 of 4
Important notes at the end of this document.
Features Applications
Standard size
Very high current rating
Fast response time
Stable performance over life
Very low capacitance
High insulation resistance
RoHS-compatible
Tower mounted amplifier
Consumer electronic
Alarm systems
Electrical specifications
DC spark-over voltage 1) 2)
75
20 V
%
Impulse spark-over voltage
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
< 350
< 300
< 650
< 600
V
V
V
V
Service life
10 operations 50 Hz, 1 s 20 A
10 operations [5× (+) & 5× (–)] 8/20 µs 20 kA
1 operation 8/20 µs 25 kA
1 operation 10/350 µs 2.5 kA
Insulation resistance at 50 VDC > 10
G
Capacitance at 1 MHz < 1.5 pF
Arc voltage at 1 A
Glow to arc transition current
Glow voltage
~ 15
~ 0.6
~ 60
V
A
V
Weight ~ 1.5 g
Operation and storage temperature -40 ... +125 °C
Climatic category (IEC 60068-1) 40/ 125 / 21
Marking, blue negative
75 YY O
75 - Nominal voltage
YY - Year of production
O - Non radioactive
1) At delivery AQL 0.65 level II, DIN ISO 2859
2) In ionized mode
Terms in accordance with ITU-T Rec. K.12, IEC 61663-2 and IEC 61643-311.
Surge arrester B88069X3881****
2-electrode arrester A81-A75X
PPD AB PD / PPD AB PM Issue 04 / 2012-11-20
Please read Cautions and warnings and Page 3 of 4
Important notes at the end of this document.
Dimensional drawing in mm
Ordering codes and packing advices
B88069X3881S102 = 100 pcs. on 5 taped stripes B88069X3881T502 = 500 pcs. on tape & reel
Cautions and warnings
Surge arresters must not be operated directly in power supply networks.
Surge arresters may become hot in case of longer periods of current stress (danger of burning).
If the contacts of the surge arrester are defective, current stress can lead to the formation of
sparks and loud noises.
Surge arresters may be used only within their specified values. In case of overload, the lead
contacts may fail or the component may be destroyed.
Damaged surge arresters must not be re-used.
Page 4 of 4
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 we are 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 a 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.tdk-electronics.tdk.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 our General Terms and
Conditions of Supply.
7. Our manufacturing sites serving the automotive business apply the IATF 16949 standard. The IATF
certifications confirm our compliance with requirements regarding the quality management system in the
automotive industry. Referring to customer requirements and customer specific requirements (“CSR”) TDK
always has and will continue to have the policy of respecting individual agreements. Even if IATF 16949
may appear to support the acceptance of unilateral requirements, we hereby like to emphasize that only
requirements mutually agreed upon can and will be implemented in our Quality Management
System. For clarification purposes we like to point out that obligations from IATF 16949 shall only become
legally binding if individually agreed upon.
8. The trade names EPCOS, CeraCharge, CeraDiode, CeraLink, CeraPad, CeraPlas, CSMP, CTVS,
DeltaCap, DigiSiMic, ExoCore, FilterCap, FormFit, LeaXield, MiniBlue, MiniCell, MKD, MKK, MotorCap,
PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PowerHap, PQSine, PQvar, SIFERRIT, SIFI, SIKOREL,
SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, ThermoFuse, WindCap are trademarks registered
or pending in Europe and in other countries. Further information will be found on the Internet at www.tdk-
electronics.tdk.com/trademarks.
Release 2018-10
