SIOV metal oxide varistors Housed (ThermoFuse) varistors, AdvanceD series Series/Type: ETFV25 Date: February 2010 © EPCOS AG 2010. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS' prior express consent is prohibited. Housed varistors ETFV25 ThermoFuse varistors, ETFV25 series Construction Round varistor element, leaded Coating: epoxy resin, flame-retardant to UL 94 V-0 Terminals: tinned copper wire, metal compound wire Housing: thermoplastic, flame-retardant to UL 94 V-0 Features Wide operating voltage range 115 … 420 VRMS Self-protected under abnormal overvoltage conditions Very high surge current ratings of 20 kA Approvals UL Applications Air conditioner, refrigerator, TV, etc. Power meter, inverter, telecom equipment, etc. Transient voltage surge suppressors (TVSS) Delivery mode Bulk (standard) Typical applications General technical data Climatic category Operating temperature Storage temperature Electric strength Response time Please read Cautions and warnings and Important notes at the end of this document. to IEC 60068-1 to CECC 42 000 to CECC 42 000 Page 2 of 10 40/85/56 40 ... + 85 40 ... +125 ≥ 2.5 < 25 °C °C kVRMS ns Housed varistors ETFV25 ThermoFuse varistors, ETFV25 series Electrical specifications and ordering codes Maximum ratings (TA = 85 °C) Ordering code B72225T4111K101 B72225T4131K101 B72225T4141K101 B72225T4151K101 B72225T4171K101 B72225T4211K101 B72225T4231K101 B72225T4251K101 B72225T4271K101 B72225T4301K101 B72225T4321K101 B72225T4351K101 B72225T4381K101 B72225T4421K101 Type (untaped) SIOVETFV25K115E4 ETFV25K130E4 ETFV25K140E4 ETFV25K150E4 ETFV25K175E4 ETFV25K210E4 ETFV25K230E4 ETFV25K250E4 ETFV25K275E4 ETFV25K300E4 ETFV25K320E4 ETFV25K350E4 ETFV25K385E4 ETFV25K420E4 VRMS VDC Wmax (2 ms) J 170 185 195 215 245 290 315 345 375 410 445 495 600 700 Pmax V 150 170 180 200 225 270 300 320 350 385 420 460 505 560 imax (8/20 µs) A 20000 20000 20000 20000 20000 20000 20000 20000 20000 20000 20000 20000 20000 20000 V 115 130 140 150 175 210 230 250 275 300 320 350 385 420 Vv (1 mA) V 180 205 220 240 270 330 360 390 430 470 510 560 620 680 ∆Vv (1 mA) % ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 vc,max (ic) V 300 340 360 395 455 545 595 650 710 775 840 910 1025 1120 ic Ctyp (1 kHz) pF 2280 2010 1860 1740 1500 1245 1140 1050 945 870 810 750 675 630 W 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Characteristics (TA = 25 °C) Ordering code B72225T4111K101 B72225T4131K101 B72225T4141K101 B72225T4151K101 B72225T4171K101 B72225T4211K101 B72225T4231K101 B72225T4251K101 B72225T4271K101 B72225T4301K101 B72225T4321K101 B72225T4351K101 B72225T4381K101 B72225T4421K101 Type (untaped) SIOVETFV25K115E4 ETFV25K130E4 ETFV25K140E4 ETFV25K150E4 ETFV25K175E4 ETFV25K210E4 ETFV25K230E4 ETFV25K250E4 ETFV25K275E4 ETFV25K300E4 ETFV25K320E4 ETFV25K350E4 ETFV25K385E4 ETFV25K420E4 Please read Cautions and warnings and Important notes at the end of this document. Page 3 of 10 A 150 150 150 150 150 150 150 150 150 150 150 150 150 150 Housed varistors ETFV25 ThermoFuse varistors, ETFV25 series Dimensional drawings Weight Nominal diameter mm 25 Lead configuration Please read Cautions and warnings and Important notes at the end of this document. Page 4 of 10 VRMS V 115 ... 420 Weight g 13.3 ... 16.3 Housed varistors ETFV25 ThermoFuse varistors, ETFV25 series Reliability data Test Test methods/conditions Varistor voltage The voltage between two terminals with To meet the specified value the specified measuring current applied is called VV (1 mADC @ 0.2 ... 2 s). 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 |∆V/V (1 mA)| ≤10% (measured in direction of surge current) 100 surge currents (8/20 µs), unipolar, interval 30 s, amplitude corresponding to derating curve for 100 impulses at 20 µs Requirement No visible damage |∆V/V (1 mA)| ≤10% (measured in direction of 100 surge currents (2 ms), unipolar, interval 120 s, amplitude corresponding surge current) to derating curve for 100 impulses at 2 No visible damage ms Surge current derating, 2 ms CECC 42 000, test C 2.1 Abnormal overvoltage test UL1449, limited current abnormal overvoltage test. Apply a high AC voltage to ThermoFuse varistor, the amplitude of overvoltage and current limit will be adopted from UL1449 general instruction in section 37. The specimen will be tested on a softwood surface covered with a double layer of white tissue paper. The specimen is to be loosely draped with a double layer of cheesecloth. The cheesecloth shall cover openings where flame, molten or other particles may be expelled as a result of the test. The test result will be visually inspected. Please read Cautions and warnings and Important notes at the end of this document. Page 5 of 10 Any of these phenomena shall not be observed, or this specimen will be judged as failed part. 1. Emission of flame, molten metal, glowing or flaming particles through any openings (pre-existed or created as a result of the test) in the product. 2. Charring, glowing, or flaming of the supporting surface, tissue paper, or cheesecloth. 3. Ignition of the enclosure. 4. Creation of any openings in the enclosure that result in accessibility of live parts, when judged in accordance with accessibility of live parts, UL1449 section 13. Housed varistors ETFV25 ThermoFuse varistors, ETFV25 series v/i characteristics v = f (i) for explanation of the characteristics refer to "General technical information", chapter 1.6.3 A = Leakage current, B = Protection level } for worst-case varistor tolerances SIOV-ETFV25 ... E4 Please read Cautions and warnings and Important notes at the end of this document. Page 6 of 10 Housed varistors ETFV25 ThermoFuse varistors, ETFV25 series 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-ETFV25 ... E4 Please read Cautions and warnings and Important notes at the end of this document. Page 7 of 10 Housed varistors ETFV25 ThermoFuse varistors, ETFV25 series 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 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. Page 8 of 10 Housed varistors ETFV25 ThermoFuse varistors, ETFV25 series 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 conditions. 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. Page 9 of 10 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 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 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, BAOKE, Alu-X, CeraDiode, CSMP, CSSP, CTVS, DeltaCap, DigiSiMic, DSSP, MiniBlue, MiniCell, MKK, MLSC, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic, 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. Page 10 of 10