Metal Oxide Varistors SMD multilayer varistor with Ni-barrier termination CT0402M4G B72590T0040M060 Designation system CT 0402 L 4 G = Chip with three-layer- termination (Ag/Ni/Sn) = Dimensions of the device 04 x 02 (length x width in 1/100 inch) = Tolerance of the varistor voltage (± 20%) = Maximum operating voltage (RMS voltage) = Taped version (cardboard tape, 7” reel, 10000 pieces/reel) Figure l b l = 1.0 ± 0.15 b = 0.5 ± 0.10 s = 0.5 ± 0.10 k = 0.2 ± 0.10 s k (all dimensions in mm) As far as patents or other rights of third parties are concerned, liability is only assumed for components per se, not for applications, processes and circuits implemented within components or assemblies. The information describes the type of component and shall not be considered as assured characteristics. Terms of delivery and rights to change design reserved. ISSUE DATE 28.01.2005 ISSUE g PUBLISHER KB VS PE PAGE 1/6 Metal Oxide Varistors SMD multilayer varistor with Ni-barrier termination CT0402M4G B72590T0040M060 V-I-characteristic VAR9757A 100 80 V 60 v 40 20 10 8 6 4 2 1 10 -6 10 -5 10 -4 10 -3 10 -2 10 -1 10 0 10 1 A 10 2 i Derating field 1000 i max. tr 100 10 1x 1 0,1 0,01 10 ISSUE DATE 100 28.01.2005 ISSUE t r [µs] g 1000 PUBLISHER 10000 KB VS PE PAGE 2/6 Metal Oxide Varistors SMD multilayer varistor with Ni-barrier termination CT0402M4G B72590T0040M060 Electrical data Maximum operating voltage RMS voltage DC voltage VRMS = 4 V VDC = 5.5 V Varistor voltage (@ 1 mA) VV = 8 up to 12 V Clamping voltage (@ 1 A, typical) VC = 19 V Maximum clamping voltage (@ 1 A) VC = 24 V Maximum average power dissipation Pmax = 3 mW Maximum surge current (8/20 µs) Imax = 1 x 25 A Maximum energy absorption (2 ms) Emax = 1 x 17 mJ Capacitance (@ 1 kHz, 1 V, 25 °C, typical) C = 200 pF Response time < 0.5 ns Operating temperature -40 … +85 °C Storage temperature (mounted parts) -40 … +125 °C Termination material Ag/Ni/Sn (thickness not specified, adjusted to fulfil wettability specification according to IEC 60068-2-58) Max. current, energy and average power dissipation depending on ambient temperature % 100 90 80 70 60 50 40 30 20 10 0 -55 ISSUE DATE 28.01.2005 70 80 ISSUE 90 100 110 120 Ambient temperature g PUBLISHER 130 140 150 °C KB VS PE PAGE 3/6 Metal Oxide Varistors SMD multilayer varistor with Ni-barrier termination CT0402M4G B72590T0040M060 Recommended geometry of solder pad B C B A A = 0.6 mm B = 0.6 mm C = 0.5 mm E = 1.7 mm A D Recommended soldering temperature profile Soldering zone max. 7 s at max. temp. Cooling-down zone max. 2 C/s (natural air cooling) Preheating zone max. 2 C/s 300 C T 40 s 245 215 180 100 s 100 20 0 50 100 150 200 s 250 t VAR0543-W-E This component should be soldered within 12 months after delivery from EPCOS. They should be left in their original packings to avoid soldering problems due to oxidized terminals. Storage temperature: -25 to 45 °C Relative humidity: < 75% annual average, < 95% on maximum 30 days in a year. The usage of mild non-activated fluxes for soldering is recommended, as well as proper cleaning of the PCB. The components are suited for Pb-free soldering. ISSUE DATE 28.01.2005 ISSUE g PUBLISHER KB VS PE PAGE 4/6 Metal Oxide Varistors SMD multilayer varistor with Ni-barrier termination CT0402M4G B72590T0040M060 Taping according to IEC 60286-3 Tape material: cardboard T P 2 P 0 Tape end (trailer) 40 min. empty cavities W F E D 0 G B 0 Leader T 1 T T A 0 1 P 1 2 25 min. empty cavities Direction of unreeling 300 mm cover tape Dimensions and tolerances: Definition Symbol Dimension Tolerance Compartment width A0 [mm] 0.6 [mm] ± 0.2 Compartment length B0 1.15 ± 0.2 Sprocket hole diameter D0 1.5 +0.1/ -0 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 2.0 ± 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 8.0 1.75 3.5 0.75 0.6 ± 0.3 ± 0.1 ± 0.05 min. max. Thickness of cardboard tape T 0.3 max. 1) £ ± 0.2 mm over any 10 pitches ISSUE DATE 28.01.2005 ISSUE g PUBLISHER KB VS PE PAGE 5/6 Metal Oxide Varistors SMD multilayer varistor with Ni-barrier termination CT0402M4G B72590T0040M060 Packing Reel material: plastic Packing unit: 10000 pcs./reel Reel dimensions: Definition Dimension Tolerance [mm] [mm] A 180 +0/ -3 Reel width (inside) W1 8.4 +1.5/ -0 Reel width (outside) W2 14.4 max. Reel diameter Symbol Ó EPCOS AG 2005. Reproduction, publication and dissemination of this data sheet, enclosures hereto and the information contained therein without EPCOS' prior express consent is prohibited. Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers' Association), unless otherwise agreed. ISSUE DATE 28.01.2005 ISSUE g PUBLISHER KB VS PE PAGE 6/6