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siov metal oxide varistors housed (thermofuse) varistors, advanced series series/type: etfv14 date: april 2011 ? epcos ag 2011. reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without epcos' prior express consent is prohibited.
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 130 ? 420 v rms self-protected under abnormal overvoltage conditions high-energy advanced series e2 approvals ul iec vde applications air conditioner, refrigerator, tv, etc. power meter, inverter, telecom equipment, etc. transient voltage surge suppressors (tvss) solar inverter delivery mode bulk (standard) typical applications general technical data climatic category to iec 60068-1 40/85/56 operating temperature to iec 61051 40 ... + 85 c storage temperature 40 ... + 85 c electric strength to iec 61051 3 2.5 kv rms insulation resistance to iec 61051 3 100 m w response time < 25 ns housed varistors etfv14 thermofuse varistors, etfv14 series page 2 of 15 please read cautions and warnings and important notes at the end of this document.
electrical specifications and ordering codes maximum ratings (t a = 85 c) ordering code type (untaped) siov- v rms v v dc v i max (8/20 s) a w max (2 ms) j p max w b72214t2131k101 ETFV14K130E2 130 170 6000 50 0.6 b72214t2141k101 etfv14k140e2 140 180 6000 55 0.6 b72214t2151k101 etfv14k150e2 150 200 6000 60 0.6 b72214t2171k101 etfv14k175e2 175 225 6000 70 0.6 b72214t2211k101 etfv14k210e2 210 270 6000 80 0.6 b72214t2231k101 etfv14k230e2 230 300 6000 90 0.6 b72214t2251k101 etfv14k250e2 250 320 6000 100 0.6 b72214t2271k101 etfv14k275e2 275 350 6000 110 0.6 b72214t2301k101 etfv14k300e2 300 385 6000 125 0.6 b72214t2321k101 etfv14k320e2 320 420 6000 136 0.6 b72214t2351k101 etfv14k350e2 350 460 6000 136 0.6 b72214t2381k101 etfv14k385e2 385 505 6000 136 0.6 b72214t2421k101 etfv14k420e2 420 560 6000 136 0.6 characteristics (t a = 25 c) ordering code type (untaped) siov- v v (1 ma) v d v v (1 ma) % v c,max (i c ) v i c a c typ (1 khz) pf b72214t2131k101 ETFV14K130E2 205 10 340 50 650 b72214t2141k101 etfv14k140e2 220 10 360 50 610 b72214t2151k101 etfv14k150e2 240 10 395 50 570 b72214t2171k101 etfv14k175e2 270 10 455 50 490 b72214t2211k101 etfv14k210e2 330 10 545 50 410 b72214t2231k101 etfv14k230e2 360 10 595 50 380 b72214t2251k101 etfv14k250e2 390 10 650 50 350 b72214t2271k101 etfv14k275e2 430 10 710 50 320 b72214t2301k101 etfv14k300e2 470 10 775 50 300 b72214t2321k101 etfv14k320e2 510 10 840 50 280 b72214t2351k101 etfv14k350e2 560 10 910 50 260 b72214t2381k101 etfv14k385e2 620 10 1025 50 240 b72214t2421k101 etfv14k420e2 680 10 1120 50 220 housed varistors etfv14 thermofuse varistors, etfv14 series page 3 of 15 please read cautions and warnings and important notes at the end of this document.
dimensional drawings lead configuration weight nominal diameter mm v rms v weight g 14 130 ... 420 4.0 ... 5.6 housed varistors etfv14 thermofuse varistors, etfv14 series page 4 of 15 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 ma dc @ 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 s) applied. to meet the specified value endurance at upper category temperature 1000 h at uct after having continuously applied the maximum allowable ac voltage at uct 2 c for 1000 h, the specimen shall be stored at room temperature and normal humidity for 1 to 2 h. thereafter, the change of v v shall be measured. | d v/v (1 ma)| 10% surge current derating, 8/20 m s 10 surge currents (8/20 m s), unipolar, interval 30 s, amplitude corresponding to derating curve for 10 impulses at 20 m s | d v/v (1 ma)| 10% (measured in direction of surge current) no visible damage surge current derating, 2 ms 10 surge currents (2 ms), unipolar, interval 120 s, amplitude corresponding to derating curve for 10 impulses at 2 ms | d v/v (1 ma)| 10% (measured in direction of surge current) no visible damage electric strength iec 61051-1, test 4.9.2 metal balls method, 2500 v rms , 60 s the varistor is placed in a container holding 1.6 0.2 mm diameter metal balls such that only the terminations of the varistor are protruding. the specified voltage shall be applied between both terminals of the specimen connected together and the electrode inserted between the metal balls. no breakdown housed varistors etfv14 thermofuse varistors, etfv14 series page 5 of 15 please read cautions and warnings and important notes at the end of this document.
test test methods/conditions requirement climatic sequence the specimen shall be subjected to: a) dry heat at uct, 16 h, iec 60068-2-2, test ba b) damp heat, 1st cycle: 55 c, 93% r. h., 24 h, iec 60068-2-30, test db c) cold, lct, 2 h, iec 60068-2-1, test aa d) damp heat, additional 5 cycles: 55 c/25 c, 93% r. h., 24 h/cycle, iec 60068-2-30, test db. then the specimen shall be stored at room temperature and normal humidity for 1 to 2 h. thereafter, the change of v v shall be measured. thereafter, insulation resis- tance r ins shall be measured at v = 500 v. | d v/v (1 ma)| 10% r ins 3 100 m w rapid change of temperature iec 60068-2-14, test na, lct/uct, dwell time 30 min, 5 cycles | d v/v (1 ma)| 5% no visible damage damp heat, steady state iec 60068-2-78, test ca the specimen shall be subjected to 40 2 c, 90 to 95% r. h. for 56 days without load / with 10% of the maxi- mum continuous dc operating voltage v dc . then stored at room temperature and normal humidity for 1 to 2 h. thereafter, the change of v v shall be measured. thereafter, insulation resis- tance r ins shall be measured at v = 500 v (insulated varistors only). | d v/v (1 ma)| 10% r ins 3 100 m w housed varistors etfv14 thermofuse varistors, etfv14 series page 6 of 15 please read cautions and warnings and important notes at the end of this document.
test test methods/conditions requirement solderability iec 60068-2-20, test ta, method 1 with modified conditions for lead-free solder alloys: 245 c, 3 s: after dipping the terminals to a depth of approximately 3 mm from the body in a soldering bath of 245 c for 3 s, the terminals shall be visually examined. the inspection shall be carried out under adequate light with normal eyesight or with the assistance of a magnifier capable of giving a magnification of 4 to 10 times. the dipped surface shall be covered with a smooth and bright solder coating with no more than small amounts of scattered imperfections such as pinholes or un-wetted or de-wetted areas. these imperfections shall not be concentrated in one area. resistance to soldering heat iec 60068-2-20, test tb, method 1a, 260 c, 10 s: each lead shall be dipped into a solder bath having a temperature of 260 5 c to a point 2.0 to 2.5 mm from the body of the specimen, be held there for 10 1 s and then be stored at room temperature and normal humidity for 1 to 2 h. the change of v v shall be measured and the specimen shall be visually examined. | d v/v (1 ma)| 5% no visible damage tensile strength iec 60068-2-21, test ua1 after gradually applying the force specified below and keeping the unit fixed for 10 s, the terminal shall be visually examined for any damage. force for wire diameter: 0.6 mm = 10 n 0.8 mm = 10 n 1.0 mm = 20 n | d v/v (1 ma)| 5% no break of solder joint, no wire break housed varistors etfv14 thermofuse varistors, etfv14 series page 7 of 15 please read cautions and warnings and important notes at the end of this document.
test test methods/conditions requirement vibration iec 60068-2-6, test fc, method b4 | d v/v (1 ma)| 5% no visible damage frequency range: amplitude: duration: pulse: 10 ? 55 hz 0.75 mm or 98 m/s 2 6 h (3 2 h) sine wave after repeatedly applying a single harmonic vibration according to the table above. the change of v v shall be measured and the specimen shall be visually examined. bump iec 60068-2-29, test eb | d v/v (1 ma)| 5% no visible damage pulse duration: max. acceleration: number of bumps: pulse: 6 ms 400 m/s 2 4000 half sine fire hazard iec 60695-11-5 (needle flame test) severity: vertical 10 s 5 s max. housed varistors etfv14 thermofuse varistors, etfv14 series page 8 of 15 please read cautions and warnings and important notes at the end of this document.
test test methods/conditions requirement abnormal overvoltage test the device is designed to meet the limited current abnormal overvoltage condition, outlined in section 39.4 of ul 1449, 3 rd edition. detailed test voltage applied onto the device for different types as in the following table: type device rating v test voltage v ETFV14K130E2 130 260 etfv14k140e2 140 280 etfv14k150e2 150 300 etfv14k175e2 175 350 etfv14k210e2 210 420 etfv14k230e2 230 415 etfv14k250e2 250 500 etfv14k275e2 275 480 etfv14k300e2 300 600 etfv14k320e2 320 600 etfv14k350e2 350 600 etfv14k385e2 385 600 etfv14k420e2 420 600 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 evaluated in accordance with accessibility of live parts test in section 58.2 of ul1449, 3 rd edition. note: uct = upper category temperature lct = lower category temperature r ins = insulation resistance housed varistors etfv14 thermofuse varistors, etfv14 series page 9 of 15 please 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", chapter 1.6.3 a = leakage current, b = protection level } for worst-case varistor tolerances siov-etfv14 ... e2 housed varistors etfv14 thermofuse varistors, etfv14 series page 10 of 15 please read cautions and warnings and important notes at the end of this document.
derating curves maximum surge current i max = f (t r , pulse train) for explanation of the derating curves refer to "general technical information", section 1.8.1 siov-etfv14 ... e2 housed varistors etfv14 thermofuse varistors, etfv14 series page 11 of 15 please 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. housed varistors etfv14 thermofuse varistors, etfv14 series page 12 of 15 please 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. housed varistors etfv14 thermofuse varistors, etfv14 series page 13 of 15 please read cautions and warnings and important notes at the end of this document.
symbols and terms symbol term c capacitance c typ typical capacitance i current i c current at which v c, max is measured i leak leakage current i max maximum surge current (also termed peak current) i max maximum discharge current to iec 61643-1 i nom nominal discharge current to iec 61643-1 lct lower category temperature l typ typical inductance p max maximum average power dissipation r ins insulation resistance r min minimum resistance t a ambient temperature t r duration of equivalent rectangular wave uct upper category temperature v voltage v clamp clamping voltage v c, max maximum clamping voltage at specified current i c v dc dc operating voltage v jump maximum jump start voltage v max maximum voltage v op operating voltage v rms ac operating voltage, root-mean-square value v rms, op, max root-mean-square value of max. dc operating voltage incl. ripple current v surge super imposed surge voltage v v varistor voltage d v v tolerance of varistor voltage w ld maximum load dump w max maximum energy absorption lead spacing all dimensions are given in mm. the commas used in numerical values denote decimal points. housed varistors etfv14 thermofuse varistors, etfv14 series page 14 of 15 please 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, mkk, mkd, 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 15 of 15

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