SFS14

SFS14 EPCOS | Alldatasheet

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 EPCOS AG 2008. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS’ prior express consent is prohibited. SIOV metal oxide varistors Housed (Fail-safe) varistors Series/Type: SFS14 Date: December 2007

Please read Cautions and warnings and Important notes at the end of this document. Construction ■ Plastic housing protected varistor ■ Terminals: tinned copper wire ■ Housing: heat-resistant and flame-retardant to UL 94 V-0

Features

■ No flame or rupture under specified test conditions (see “Reliability data”, “Overvoltage test”) ■ No harm to other components nearby on printed circuit board (PCB) Approvals ■ UL ■ CSA

Applications

■ Consumer electronics ■ Power supply Delivery mode ■ Bulk (standard) General technical data Climatic category to IEC 60068-1 40/85/56 Operating temperature to CECC 42 000 – 40 … + 85 °C Storage temperature – 40 … +125 °C Electric strength to CECC 42 000 ≥2.5 kV RMS Insulation resistance to CECC 42 000 ≥10 M Ω Response time <25 ns Housed varistors Fail-safe varistor, SFS14 series

Please read Cautions and warnings and Important notes at the end of this document. Other types are available on request. Dimensional drawing Weight Maximum ratings (TA = 85 °C) Ordering code Type (untaped) SIOV- V RMS V VDC V imax (8/20 µs) A Wmax (2 ms) J Pmax W B72214F2381K101 SFS14K385E2 385 505 5000 136 0.6 Characteristics (TA = 25 °C) Ordering code Type (untaped) SIOV- V v (1 mA) V ∆Vv (1 mA) vc, max (ic) V ic A Ctyp (1 kHz) pF B72214F2381K101 SFS14K385E2 620 ±10 1025 50 240 20 max. 11 max. 24 max.25 min. ø0.8±0.05 7.5±1.0 1) Seating plane in accordance with IEC 60717 VAR0593-F-E 3.4±1.0 Nominal diameter mm VRMS V Weight g 14 385 5.5 Fail-safe varistor, SFS14 series Housed varistors

Please 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 V v (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. Surge current derating, 8/20 µs CECC 42 000, test C 2.1 100 surge currents (8/20 µs), unipolar, interval 30 s, amplitude corresponding to derating curve for 100 impulses at 20 µs |∆V/V (1 mA)| ≤10% (measured in direction of surge current) No visible damage Surge current derating, 2m s CECC 42 000, test C 2.1 100 surge currents (2 ms), unipolar, interval 120 s, amplitude corresponding to derating curve for 100 impulses at 2 ms |∆V/V (1 mA)| ≤10% (measured in direction of surge current) No visible damage Overvoltage test The varistor should be subjected to VRMS test (VRMS = 0.85 Vv (1 mA)) until it failed, in series with 5 A fuse and 5 Ω resistor (based on S14 series). No flame, no rupture Fail-safe varistor, SFS14 series Housed varistors

Please read Cautions and warnings and Important notes at the end of this document. v/i characteristics v = f (i) – for explanation of the characteri stics refer A = Leakage current for worst-case to “General technical information”, 1.6.3 B = Protection level varistor tolerances SIOV-SFS14K385E2 v i 100 101 102 103 104A VAR0596-D V 10 5_ 10 4_ _3 10 _2 10 A B 5000 2000 600 400 800 1000 200 100 Fail-safe varistor, SFS14 series Housed varistors

Please 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-SFS14K385E2 VAR0595-V A rt µs i max 1012 10 310 4105 410 103 102 101 100 210 102310 104510 106 t r maxi Fail-safe varistor, SFS14 series Housed varistors

1. EPCOS metal oxide varistors (SIOVs) are designed for specific applications and should not be used for purposes not identified in our specifications, application notes and data books unless otherwise 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 surface 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 24 months ETFV and SFS types 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. Please read Cautions and warnings and Important notes at the end of this document. Housed varistors Fail-safe varistor, SFS14 series

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 rea- son 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 SIOV s. Use SIOVs only in normal atmospheric condi- tions. Avoid use in the presence of deoxidizing gases (chlorine gas, hydrogen sulfide gas, ammonia gas, sulfuric acid gas, etc), corrosive agents, humid or salty conditions. Avoid contact with any liquids and solvents. Please read Cautions and warnings and Important notes at the end of this document. Housed varistors Fail-safe varistor, SFS14 series

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 prod ucts 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 passive electronic components or failure before the end of their usual servic e 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 a passive electronic component could endanger human life or health (e.g. in accident prevention or life-saving systems), it must th erefore 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 a passive electronic component. 3. The warnings, cautions and product-specific notes must be observed. 4. In order to satisfy cert ain 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 th is 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 Produc ts and Services in the Electrical Industry” published by the German Electrical and Electronics Industry Association (ZVEI). 7. The trade names EPCOS, BAOKE, Alu-X, Cera Diode, CSSP, DSSP, MiniBlue, MKK, MLSC, MotorCap, PCC, PhaseCap, PhaseMod, SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SIMID, SineFormer, SIOV, SIP5D, SIP5K, 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.