SIOV metal oxide varistors SMD varistors standard series, CU types Series/Type: B726* Date: January 2018 © EPCOS AG 2018. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS' prior express consent is prohibited. EPCOS AG is a TDK Group Company.
SMD varistors (CU types) B726* Standard series EPCOS type designation system for SMD varistor standard series CU 4032 K Construction: CU Encapsulated chip Case sizes: 3225 32 x 25 4032 40 x 32 Varistor voltage tolerance: K ±10% Maximum RMS operating voltage (VRMS): 275 275 V Taping mode: G2 Taped, 330-mm reel Please read Cautions and warnings and Important notes at the end of this document.
SMD varistors (CU types) B726* Standard series Construction Cylindrical varistor element, encapsulated. Encapsulation: thermoplastic, flame-retardant to UL 94 V-0. Termination: tinned copper alloy, suitable for lead-free wave and reflow soldering, and compatible with tin/lead solder.
SMD varistors (CU types) B726* Standard series Temperature derating Climatic category: 40/+85 °C Please read Cautions and warnings and Important notes at the end of this document.
SMD varistors (CU types) B726* Standard series Electrical specifications and ordering codes Maximum ratings (TA = 85 °C) imax (8/20 µs) 1 time V V A CU3225K11G2 B72650M0110K072 11 14 100 CU4032K11G2 B72660M0110K072 11 14 250 CU3225K14G2 B72650M0140K072 14 18 100 CU4032K14G2 B72660M0140K072 14 18 250 CU3225K17G2 B72650M0170K072 17 22 100 CU4032K17G2 B72660M0170K072 17 22 250 CU3225K20G2 B72650M0200K072 20 26 100 CU4032K20G2 B72660M0200K072 20 26 250 CU3225K25G2 B72650M0250K072 25 31 100 CU4032K25G2 B72660
SMD varistors (CU types) B726* Standard series Characteristics (TA = 25 °C) Type CU3225K11G2 CU4032K11G2 CU3225K14G2 CU4032K14G2 CU3225K17G2 CU4032K17G2 CU3225K20G2 CU4032K20G2 CU3225K25G2 CU4032K25G2 CU3225K30G2 CU4032K30G2 CU3225K35G2 CU4032K35G2 CU3225K40G2 CU4032K40G2 CU3225K50G2 CU4032K50G2 CU3225K60G2 CU4032K60G2 CU3225K75G2 CU4032K75G2 CU3225K95G2 CU4032K95G2 CU3225K115G2 CU4032K115G2 CU3225K130G2 CU4032K130G2 CU3225K140G2 CU4032K140G2 CU3225K150G2 CU4032K150G2 CU3225K175G2 CU4032K175G2 VV (1 mA
SMD varistors (CU types) B726* Standard series Electrical specifications and ordering codes Maximum ratings (TA = 85 °C) imax (8/20 µs) 1 time V V A CU3225K230G2 B72650M0231K072 230 300 400 CU4032K230G2 B72660M0231K072 230 300 1200 CU3225K250G2 B72650M0251K072 250 320 400 CU4032K250G2 B72660M0251K072 250 320 1200 CU3225K275G2 B72650M0271K072 275 350 400 CU4032K275G2 B72660M0271K072 275 350 1200 CU3225K300G2 B72650M0301K072 300 385 400 CU4032K300G2 B72660M0301K072 300 385 1200 1) Note: Nominal discharge c
SMD varistors (CU types) B726* Standard series Dimensional drawing Dimensions in mm Chip size VRMS,max EIA in mm l w h 3225 11 ... 175 8.0 ±0.3 6.3 ±0.3 3.2 ±0.3 3225 230 ... 300 8.0 ±0.3 6.3 ±0.3 4.5 ±0.3 4032 11 ... 175 4032 230 ... 300 10.2 ±0.3 8.0 ±0.3 4.5 ±0.3 10.2 ±0.3 8.0 ±0.3 3.2 ±0.3 Recommended solder pad layout Dimensions in mm Please read Cautions and warnings and Important notes at the end of this document. Chip size EIA in mm A B C 3225 3.50 2.80 4.50 4032 3.
SMD varistors (CU types) B726* Standard series Delivery mode EIA case size Taping 3225 3225 3225 3225 3225 3225 3225 3225 3225 3225 3225 3225 3225 3225 3225 3225 3225 3225 3225 3225 3225 4032 4032 4032 4032 4032 4032 4032 4032 4032 4032 4032 4032 4032 4032 4032 4032 4032 4032 4032 4032 4032 Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister Blister
SMD varistors (CU types) B726* Standard series Reliability data Note: For CU varistors mounted on PCB by reflow soldering. 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). Requirement Clamping voltage The maximum voltage between two terminals with the specified standard impulse current (8/20 µs) applied.
SMD varistors (CU types) B726* Standard series 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.
SMD varistors (CU types) B726* Standard series Test Test methods/conditions Requirement Robustness of termination Substrate bending test IEC 60068-2-21, test Ue1 Deflection = 2 mm t = 60 s |∆V/V (1 mA)| ≤10% No visible damage Shear test IEC 60068-2-21, test Ue3 Force = 5 N t = 10 ±1 s |∆V/V (1 mA)| ≤10% No visible damage IEC 60068-2-6, test Fc, method B4 Frequency range: 10 … 55 Hz Amplitude: 0.
SMD varistors (CU types) B726* Standard series V/I characteristics CU3225 ... Please read Cautions and warnings and Important notes at the end of this document.
SMD varistors (CU types) B726* Standard series V/I characteristics CU4032 ... Please read Cautions and warnings and Important notes at the end of this document.
SMD varistors (CU types) B726* Standard series Derating curves for CU3225... Maximum surge current Isurge,max = f (tr, pulse train) For explanation of the derating curves refer to "General technical information", chapter 2.7.2 CU3225K11G2 ... K40G2 CU3225K50G2 ... K300G2 Please read Cautions and warnings and Important notes at the end of this document.
SMD varistors (CU types) B726* Standard series Derating curves for CU4032... Maximum surge current Isurge,max = f (tr, pulse train) For explanation of the derating curves refer to "General technical information", chapter 2.7.2 CU4032K11G2 ... K40G2 CU4032K50G2 ... K300G2 Please read Cautions and warnings and Important notes at the end of this document.
SMD varistors (CU types) B726* Standard series Taping and packing for CU varistors Blister tape (taping to IEC 60286-3) Dimensions in mm Symbol Case size 3225 4032 Tolerance Compartment width A0 7.0 8.6 ±0.20 Compartment length B0 8.70 10.6 ±0.20 Thickness cover tape K0 5.00 max. Overall thickness T2 5.50 max. Thickness tape T 0.30 max. Sprocket hole diameter D0 1.50 +0.10/ 0 Sprocket hole diameter D1 1.50 min. Sprocket hole pitch P0 4.00 ±0.
SMD varistors (CU types) B726* Standard series Additional taping information Reel material Polystyrol (PS) Tape material Polystyrol (PS) or Polycarbonat (PC), PVC or PET Tape break force min. 10 N Top cover tape strength min.
SMD varistors (CU types) B726* Standard 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.
SMD varistors (CU types) B726* Standard 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.
SMD varistors (CU types) B726* Standard series Symbols and terms Symbol Term C Capacitance Ctyp Typical capacitance i Current ic Current at which Vc, max is measured Ileak Leakage current imax Maximum surge current (also termed peak current) Imax Maximum discharge current In Nominal discharge current to UL 1449 LCT Lower category temperature Ltyp Typical inductance Pmax Maximum average power dissipation Rins Insulation resistance Rmin Minimum resistance TA Ambient temperature
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.
Important notes 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.
