Metal oxide varistor SMD Varistors, Monolithic (CU) Series/Type: Ordering code: CU4032K230G2K1 B72660M0231K093 Date: Version: 2007-12-03 1 Content of header bars 1 and 2 of data sheet will be automatically entered in headers and footers! Please fill in the table and then change the color to "white". This ensures that the table disappears (invisible) for the customer PDF. Don't change formatting when entering or pasting text in the table and don't add any cell or line in and to it! Identification/Classification 1 (header 1 + top left header bar): Metal oxide varistor Identification/Classification 2 (header 2 + bottom left header bar): SMD Varistors, Monolithic (CU) Ordering code: (top right header bar) B72660M0231K093 Series/Type: (top right header bar) CU4032K230G2K1 Preliminary data (optional): (if necessary) Department: KB VS PE Date: 2007-12-03 Version: 1 Prepared by: Dr. Kofler Release signed by: Dr. Engel Release signed QS: Hr. Schlauer Modifications/Remarks: New form (old edition: a) (c) EPCOS AG 2007. Reproduction, publication and dissemination of this data sheet, enclosures hereto and the information contained therein without EPCOS' prior express consent is prohibited Metal oxide varistor SMD Varistors, Monolithic (CU) B72660M0231K093 CU4032K230G2K1 Designation system CU 4032 K 230 G2 K1 = chip encapsulated = dimensions of the device 40 x 32 (length x width in 1/100 inch) = tolerance of the varistor voltage (10%) = max. RMS operating voltage = taped version, blister tape, 13" reel (1000 pcs. /reel) = sealed type Electrical data Max. operating voltage RMS voltage VRMS = 230 V DC voltage VDC = 300 V Varistor voltage (@ 1 mA, 25 C) Max. clamping voltage (@ 10 A) VV = 324...396V VC = 595 V Max. average power dissipation Max. surge current (8/20 s) Max. energy absorption (2 ms) Capacitance (@ 1 kHz, 1 V, 25 C; typical) Pmax = 0.25 W Imax = 1 x 1200 A Emax = 1 x 17 J C = 115 pF Response time Operating temperature Storage temperature (mounted parts) < 0.5 ns -40 ... +85 C -40 ... +125 C KB VS PE Please read Cautions and warnings and Important notes at the end of this document. 2007-12-03 Page 2 of 12 Metal oxide varistor SMD Varistors, Monolithic (CU) B72660M0231K093 CU4032K230G2K1 v/i-characteristic VAR9109A 5000 v 4000 V 2000 1000 800 600 400 200 100 80 60 50 10 -5 10 -4 10 -3 10 -2 10 -1 10 0 10 1 10 2 10 3 A 10 4 i Derating field 10000 i max. tr 1000 1x 100 2x 10 x 10^2 x 10^3 x 10^4 x 10^5 x 10^6 x 10 inf.. 1 0,1 10 100 1000 10000 t r [s] KB VS PE Please read Cautions and warnings and Important notes at the end of this document. 2007-12-03 Page 3 of 12 Metal oxide varistor SMD Varistors, Monolithic (CU) B72660M0231K093 CU4032K230G2K1 Temperature derating Max. current, energy, operating voltage and average power dissipation depending on ambient temperature % 100 90 80 70 60 50 40 30 20 10 0 -55 70 80 90 100 110 120 Ambient temperature 130 140 150 C Dimensional drawing in mm L H l = 10.2 0.3 b = 8.0 0.3 h = 4.5 0.3 AL = 1.5 0.3 X = 0.3max X AL B Recommended solder pad layout B C A B A A = 3.5 mm B = 2.8 mm C = 6.5 mm D = 12.1 mm D KB VS PE Please read Cautions and warnings and Important notes at the end of this document. 2007-12-03 Page 4 of 12 Metal oxide varistor SMD Varistors, Monolithic (CU) B72660M0231K093 CU4032K230G2K1 Recommended soldering temperature profiles Reflow soldering temperature profile tp Temperature Tp Ramp-up Critical zone TL to Tp TL tL T Smax T Smin Ramp-down t S Preheat 25 t 25 C to peak Time TPT0892-3-E Profile feature Sn-Pb eutectic assembly Pb-free assembly Average ramp-up rate (TSmax to Tp) Preheat - Temperature min (TSmin) - Temperature max (TSmax) - Time (tSmin to tSmax) Time maintained above - Temperature min (TL) - Time (tL) 3 C/ second max. 3 C/ second max. 100 C 150 C 60 ... 120 seconds 150 C 200 C 60 ... 180 seconds 183 C 60 ... 150 seconds 217 C 60 ... 150 seconds Peak classification temperature (Tp) 220 C ... 240 C 240 C ... 260 C Time within 5 C of actual peak temperature (tp) Ramp-down rate 10 ... 30 seconds 20 ... 40 seconds 6 C/ second max. 6 C/ second max. Time 25 C to peak temperature 6 minutes max. 8 minutes max. Notes: All temperatures refer to topside of the package, measured on the package body surface. Max. number of reflow cycles: 3 KB VS PE Please read Cautions and warnings and Important notes at the end of this document. 2007-12-03 Page 5 of 12 Metal oxide varistor SMD Varistors, Monolithic (CU) B72660M0231K093 CU4032K230G2K1 Wave soldering temperature profile Temperature characteristic at component terminal with dual-wave soldering 300 Normal curve Limit curves 10 s C Temperature 250 235 C ... 260 C 2nd wave 200 1st wave 5 K/s 2 K/s approx. 200 K/s 150 100 C ... 130 C 100 50 2 K/s Forced cooling 0 0 50 100 150 200 s 250 Time KKE0144-J-E Soldering guidelines The usage of mild, non-activated fluxes for soldering is recommended, as well as proper cleaning of the PCB. The components are suitable for reflow soldering to JEDEC J-STD-020C. Storage condition As far as possible, the components should be employed within 24 months after delivery from EPCOS. They should be left in their original packings to avoid soldering problems due to oxidized contacts. Storage temperature: - 25 up to + 45C. Relative humidity: < 75 % annual average, < 95 % on max. 30 days in a year. KB VS PE Please read Cautions and warnings and Important notes at the end of this document. 2007-12-03 Page 6 of 12 Metal oxide varistor SMD Varistors, Monolithic (CU) B72660M0231K093 CU4032K230G2K1 Taping and packaging Tape and reel packing according to IEC 60286-3 Tape material: Blister Dimensions and tolerances Definition Symbol Dimension Tolerance [mm] [mm] Compartment width A0 8.6 0.2 Compartment length B0 10.6 0.2 Compartment height K0 5.0 max. Sprocket hole diameter D0 1.5 +0.1 /-0 Compartment hole diameter D1 1.5 min. Sprocket hole pitch P0 4.0 0.1 1) Distance center hole to center compartment P2 2.0 0.05 Pitch of the component compartments P1 12.0 0.1 Tape width Distance edge to center of hole Distance center hole to center compartment Distance compartment to edge Overall thickness W E F G T2 16.0 1.75 7.5 0.75 5.5 0.3 0.1 0.05 min. max. Thickness tape T 0.3 max. 1) 0.2 mm over any 10 pitches Package: 16mm tape KB VS PE Please read Cautions and warnings and Important notes at the end of this document. 2007-12-03 Page 7 of 12 Metal oxide varistor SMD Varistors, Monolithic (CU) B72660M0231K093 CU4032K230G2K1 Packing Packing material: Plastic Reel dimensions 40 min. empty cavities A Direction of unreeling Tape end (trailer) Leader W1 130.2 25 min. empty cavities _0 o60 +2 W2 300 mm cover tape KKE0058-I Dinition Symbol Dimension Tolerance [mm] [mm] A 330 +0 / -3 Reel width (inside) W1 16.4 +1.5 /-0 Reel width (outside) W2 22.4 max. Reel diameter Packing unit: 1000 pcs. / reel KB VS PE Please read Cautions and warnings and Important notes at the end of this document. 2007-12-03 Page 8 of 12 Metal oxide varistor SMD Varistors, Monolithic (CU) B72660M0231K093 CU4032K230G2K1 Cautions and warnings General Some parts of this publication contain statements about the suitability of our varistors and CeraDiodes for certain areas of application, including recommendations about incorporation/design-in of these products into customer applications. The statements are based on our knowledge of typical requirements often made of our varistors and/or CeraDiodes in the particular areas. We nevertheless expressly point out that such statements cannot be regarded as binding statements about the suitability of our varistors and/or CeraDiodes 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 incumbent on the customer to check and decide whether the varistors and/or CeraDiodes with the properties described in the product specification are suitable for use in a particular customer application. Do not use EPCOS varistors and CeraDiodes for purposes not identified in our specifications, application notes and data books. Ensure the suitability of a varistor or CeraDiode in particular by testing it for reliability during design-in. Always evaluate a varistor or CeraDiode under worst-case conditions. Pay special attention to the reliability of varistors and CeraDiodes intended for use in safetycritical applications (e.g. medical equipment, automotive, spacecraft, nuclear power plant). Design notes Always connect a varistor or CeraDiode in parallel with the electronic circuit to be protected. Consider maximum rated power dissipation if a varistor or CeraDiode has insufficient time to cool down between a number of pulses occurring within a specified isolated time period. Ensure that electrical characteristics do not degrade. Consider derating at higher operating temperatures. Choose the highest voltage class compatible with derating at higher temperatures Surge currents beyond specified values will puncture a varistor or CeraDiode. In extreme cases a varistor or CeraDiode will burst. If steep surge current edges are to be expected, make sure your design is as low-inductance as possible. In some cases the malfunctioning of passive electronic components or failure before the end of their service life cannot be completely ruled out in the current state of the art, even if they are operated as specified. In applications requiring a very high level of operational safety and especially when the malfunction or failure of a passive electronic component could endanger human life or health (e.g. in accident prevention, life-saving systems, or automotive battery line applications such as clamp 30), ensure by suitable design of the application or other measures (e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by third parties in the event of such a malfunction or failure. Only use varistors from the AUTO series in safety-relevant applications. Specified values only apply to varistors and CeraDiodes that have not been subject to prior electrical, mechanical or thermal damage. The use of varistors and CeraDiodes in line-to-ground applications is therefore not advisable, and it is only allowed together with safety countermeasures like thermal fuses. KB VS PE Please read Cautions and warnings and Important notes at the end of this document. 2007-12-03 Page 9 of 12 Metal oxide varistor SMD Varistors, Monolithic (CU) B72660M0231K093 CU4032K230G2K1 Storage Only store varistors in their original packaging. Do not open the package before storage. Storage conditions in original packaging: temperature -25 to +45C, relative humidity 75% annual mean, maximum 95%, dew precipitation is inadmissible. Do not store varistors or CeraDiodes where they are exposed to heat or direct sunlight. Otherwise the packaging material may be deformed or varistors and CeraDiodes may stick together, causing problems during mounting. Avoid contamination of the varistor or CeraDiode surface during storage, handling and processing. Avoid storing varistors or CeraDiodes in harmful environments where they are exposed to corrosive gases for example (SOx, Cl). Use varistors and CeraDiodes as soon as possible after opening factory seals such as polyvinylsealed packages. Solder varistors after shipment from EPCOS within the time specified: - Varistors and CeraDiodes with Ni barrier termination, 12 months - Varistors and CeraDiodes with AgPd termination, 6 months - SHCV and CU series, 24 months Handling Do not drop varistors and CeraDiodes and allow them to be chipped. Do not touch varistors and CeraDiodes with your bare hands - gloves are recommended. Avoid contamination of the varistor surface during handling. Mounting When varistors or CeraDiodes are encapsulated with sealing material or overmolded with plastic material, be sure to observe the precautions in "Mounting instructions", "Sealing, potting and overmolding". Make sure an electrode is not scratched before, during or after the mounting process. Make sure contacts and housings used for assembly with varistors and CeraDiodes are clean before mounting. The surface temperature of an operating varistor or CeraDiode can be higher. Ensure that adjacent components are placed at a sufficient distance from a varistor to allow proper cooling. Avoid contamination of the varistor or CeraDiode surface during processing. Only varistors with an Ni barrier termination are approved for lead-free soldering. KB VS PE Please read Cautions and warnings and Important notes at the end of this document. 2007-12-03 Page 10 of 12 Metal oxide varistor SMD Varistors, Monolithic (CU) B72660M0231K093 CU4032K230G2K1 Soldering Complete removal of flux is recommended to avoid surface contamination that can result in an instable and/or high leakage current. Use resin-type or non-activated flux. Bear in mind that insufficient preheating may cause ceramic cracks. Rapid cooling by dipping in solvent is not recommended, otherwise a component may crack. Conductive adhesive gluing Varistors with an AgPd termination are approved for conductive adhesive gluing only. Operation Use varistors and CeraDiodes only within the specified operating temperature range. Use varistors and CeraDiodes only within specified voltage and current ranges. Environmental conditions must not harm a varistor or CeraDiode. Only use them in normal atmospheric conditions. Reducing the atmosphere (e.g. hydrogen or nitrogen atmosphere) is prohibited. Prevent a varistor from contacting liquids and solvents. Make sure that no water enters a varistor (e.g. through plug terminals). Avoid dewing and condensation. EPCOS varistors and CeraDiodes are designed for indoor applications. Under all circumstances avoid exposure to: - direct sunlight - rain or condensation - steam, saline spray - corrosive gases - atmosphere with reduced oxygen content EPCOS varistors and CeraDiodes are not suitable for switching applications or voltage stabilization where static power dissipation is required. Varistors are designed for ESD protection and transient suppression. CeraDiodes are designed for ESD protection only. This listing does not claim to be complete, it merely reflects our experience. KB VS PE Please read Cautions and warnings and Important notes at the end of this document. 2007-12-03 Page 11 of 12 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 passive 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 a passive 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 a passive 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. 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, CSSP, 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. Page 12 of 12