VE1812K801R020

Surface Mount Varistors VE High Temperature 150°C Overview Applications KEMET's VE series of high temperature, low voltage varistors are designed to protect sensitive electronic devices against high voltage surges in the low voltage region. In addition to superior operating performance at rated 150°C (AEC–Q200 compliance) they offer excellent transient energy absorption due to improved energy volume distribution and power dissipation. Typical applications include transient over-voltage protection in automotive assembly motors and controllers as well as surge protection of non-automotive electronic products exposed to over-heating, i.e., consumer, telecommunication or industrial. Load dump and jump start protection of 12 to 24 V supply systems. Protection of integrated circuits and other components at the circuit board level including the suppression of inductive switching or other transient events such as surge voltage. ESD protection for components sensitive to IEC 1000–4–2, MILSTD 883C Method 3015.7 and other industry spec. Replacement of larger surface mount TVS Zeners in many applications. Designed to achieve electromagnetic compliance of end products and provide on-board transient voltage protection of ICs and transistors. Benefits • AEC-Q200 qualified Grade 1 • Surface mount form factor • Operating ambient temperature of −55°C to +150°C • Superior operating performance rated at 150°C (AEC-Q200 compliance) • Operating voltage range of 11 – 170 V • AC voltage range (Vrms) of 8 – 130 V • High resistance to cyclic temperature stress • Low leakage currents after 1,000 hours rated at 150°C • High energy absorption capability • Available case sizes: 0603, 0805, 1206, 1210, 1812, 2220 • Short response time • Broad range of current and energy handling capabilities • Low clamping voltage – Uc • Non-sensitive to mildly activated fluxes • Barrier type end terminations solderable with Pb-free solders according to JEDEC J–STD–020C and IEC 60068–2–58 • RoHS 2 2011/65/EC, REACH compliant Click image above for interactive 3D content Open PDF in Adobe Reader for full functionality One world. One KEMET © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com V0003_VE • 4/30/2019 1 SMD Varistors VE High Temperature 150°C Ordering Information VE 0603 M 300 R 002 Series Chip Size Code Tolerances Rated Peak Single Pulse Transient Current (A) Packaging/ Termination Maximum Continuous Working Voltage (Vrms AC) Varistor SMD High Temperature 150°C Low Voltage Multilayer Chip 0603 = 0603 0805 = 0805 1206 = 1206 1210 = 1210 1812 = 1812 2220 = 2220 K = ±10% L = ±15% M = ±20% 300 = 30 101 = 100 121 = 120 151 = 150 201 = 200 251 = 250 301 = 300 401 = 400 501 = 500 601 = 600 801 = 800 102 = 1,000 122 = 1,200 (First two digits represent significant figures. Third digit specifies number of zeros.) R = Reel 180 mm/Ni Sn Barrier Terminations 008 = 8 011 = 11 014 = 14 017 = 17 020 = 20 025 = 25 030 = 30 035 = 35 040 = 40 050 = 50 060 = 60 075 = 75 095 = 95 115 = 115 130 = 130 Dimensions – Millimeters 0.5±0.25 W t L Size Code L W tmax 0603 1.6±0.20 0.80±0.10 0.95 0805 1206 1210 1812 2220 2.0±0.25 3.2±0.30 3.2±0.30 4.7±0.40 5.7±0.50 1.25±0.20 1.60±0.20 2.50±0.25 3.20±0.30 5.00±0.40 0.80 0.85 0.85 1.25 1.25 © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com V0003_VE • 4/30/2019 2 SMD Varistors VE High Temperature 150°C Environmental Compliance RoHS 2 2011/65/EC, REACH Performance Characteristics Continuous Units Value DC Voltage Range (Vdc) V 11 – 170 AC Voltage Range (Vrms) V 8 – 130 Peak Single Pulse Surge Current, 8/20 µs Waveform (Imax) A 30 – 1,200 Single Pulse Surge Energy, 10/1,000 µs Waveform (Wmax) J 0.1 – 12.2 Operating Ambient Temperature °C −55 to +150 Storage Temperature Range (mounted components) °C −55 to +150 %/°C < +0.05 ns 0.2 wt. % are NOT RECOMMENDED. The use of such fluxes could create high leakage current paths along the body of the varistor components. When a flux is applied prior to wave soldering, it is important to completely dry any residual flux solvents prior to the soldering process. Thermal Shock – to avoid the possibility of generating stresses in the varistor chip due to thermal shock, a preheat stage to within 100°C of the peak soldering process temperature is recommended. Additionally, SMD varistors should not be subjected to a temperature gradient greater than 4°C/second, with an ideal gradient being 2°C/second. Peak temperatures should be controlled. Wave and Reflow soldering conditions for SMD varistors with Pb-containing solders are shown in Fig. 1 and 2 respectively, while Wave and Reflow soldering conditions for SMD varistors with Pb-free solders are shown in Figures 1 and 3 © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com V0003_VE • 4/30/2019 8 SMD Varistors VE High Temperature 150°C Soldering cont'd Whenever several different types of SMD components are being soldered, each having a specific soldering profile, the soldering profile with the least heat and the minimum amount of heating time is recommended. Once soldering has been completed, it is necessary to minimize the possibility of thermal shock by allowing the hot PCB to cool to less than 50°C before cleaning. Inspection Criteria – the inspection criteria to determine acceptable solder joints, when Wave or Infrared Reflow processes are used, will depend on several key variables, principally termination material process profiles. Pb-contining Wave and IR Reflow Soldering – typical “before” and “after” soldering results for Barrier Type End Terminations can be seen in Fig. 4. Barrier type terminated varistors form a reliable electrical contact and metallurgical bond between the end terminations and the solder pads. The bond between these two metallic surfaces is exceptionally strong and has been tested by both vertical pull and lateral (horizontal) push tests. The results exceed established industry standards for adhesion. The solder joint appearance of a barrier type terminated varistor shows that solder forms a metallurgical junction with the thin tin-alloy (over the barrier layer), and due to its small volume “climbs” the outer surface of the terminations, the meniscus will be slightly lower. This optical appearance should be taken into consideration when programming visual inspection of the PCB after soldering. Ni Sn Barrier Type End Terminations Figure 4: Soldering Criterion in case of Wave and IR Reflow Pb-containing Soldering Pb-free Wave and IR Reflow Soldering – typical “before” and “after” soldering results for Barrier Type End Terminations are given in a phenomenon knows as “mirror” or “negative” meniscus. Solder forms a metallurgical junction with the entire volume of the end termination, i.e. it diffuses from pad to end termination across the inner side, forming a “mirror” or “negative” meniscus. The height of the solder penetration can be clearly seen on the end termination and is always 30% higher than the chip height. © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com V0003_VE • 4/30/2019 9 SMD Varistors VE High Temperature 150°C Soldering cont'd Solder Test and Retained Samples – reflow soldering test based on J-STD-020D.1 and soldering test by dipping based on IEC 600682 for Pb-free solders are preformed on each production lot as shown in the following chart. Test results and accompanying samples are retained for a minimum of two (2) years. The solderability of a specific lot can be checked at any time within this period should a customer require this information. Resistance to Flux Solderability Static leaching (Simulation of Reflow Soldering) Dynamic Leaching (Simulation of Wave Soldering) Soldering method Dipping Dipping Dipping Dipping with agitation Flux L3CN, ORL0 L3CN, ORL0, R L3CN, ORL0, R L3CN, ORL0, R Pb Solder 62 Sn/36 Pb/2 Ag Pb Soldering temperature (°C) 235±5 235±5 260±5 235±5 Test Parameter Pb-FREE Solder Sn96/Cu0,4–0,8/3–4Ag Pb-FREE Soldering Temperature (°C) 250±5 250±5 280±5 250±5 Soldering Time (s) 2 210 10 > 15 Burn-in Conditions VDCmax, 48 h Acceptance Criterion dVn < 5%, idc must stay unchanged > 95% of end termination must be covered by solder > 95% of end termination must be intact and covered by solder > 95% of end termination must be intact and covered by solder Rework Criteria Soldering Iron – unless absolutely necessary, the use of soldering irons is NOT recommended for reworking varistor chips. If no other means of rework is available, the following criteria must be strictly followed: • Do not allow the tip of the iron to directly contact the top of the chip • Do not exceed the following soldering iron specifications: Output Power: 30 Watts maximum Temperature of Soldering Iron Tip: 280°C maximum Soldering Time: 10 Seconds maximum Storage Conditions – SMD varistors should be used within 1 year of shipment from factory to avoid possible soldering problems caused by oxidized terminals. The storage environment should be controlled, with humidity less than 40% and temperature between -25 and 45 °C. Varistor chips should always be stored in their original packaged unit. © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com V0003_VE • 4/30/2019 10 SMD Varistors VE High Temperature 150°C Soldering Pad Configuration M B W C A t B A L D Size L (mm) W (mm) h (mm) tmax (mm) A (mm) B (mm) C (mm) D (mm) 0603 1.6±0.20 0.80±0.10 0.5±0.25 1.0 1.0 1.0 0.6 2.6 0805 2.0±0.25 1.25±0.20 0.5±0.25 1.1 1.4 1.2 1.0 3.4 1206 3.2±0.30 1.60±0.20 0.5±0.25 1.6 1.8 1.2 2.1 4.5 1210 3.2±0.30 2.50±0.25 0.5±0.25 1.8 2.8 1.2 2.1 4.5 1812 4.7±0.40 3.20±0.30 0.5±0.25 1.9 3.6 1.5 3.2 6.2 2220 5.7±0.50 5.00±0.40 0.5±0.25 1.9 5.5 1.5 4.2 7.2 1210 1812 2220 180 4,000 2,500 2,500 2,000 180 1,500 1,500 1,000 1,000 180 1,500 1,500 1,000 1,000 Packaging Voltage Range (V) 2 – 14 17 20 – 40 50 – 130 Chip Size 0603 0805 1206 180 4,000 3,500 3,500 180 4,000 3,500 3,500 180 4,000 2,500 2,500 2,000 Reel Size © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com V0003_VE • 4/30/2019 11 SMD Varistors VE High Temperature 150°C Construction Detailed Cross Section Glass Passivation Termination (Ag/Pd, Ni/Sn) Glass Passivation ZnO Layer Inner Electrodes (Ag) Termination (Ag/Pd, Ni/Sn) Terminate Edge Inner Electrodes (Ag) Terminate Edge © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com V0003_VE • 4/30/2019 12 SMD Varistors VE High Temperature 150°C Taping & Reel Specifications Tape Size (mm) A0 B0 K0 Maximum B1 Maximum D1 Minimum E2 Minimum P1 F W T2 Maximum W1 W2 Maximum W3 A 8 mm 12 mm 0603 0805 1206 1210 1812 2220 1.2 1.9 1.1 4.35 0.3 6.25 4.0 3.5 8.0 3.5 8.4+1.5 14.4 7.9 – 10.9 180 1.6 2.4 1.1 4.35 0.3 6.25 4.0 3.5 8.0 3.5 8.4+1.5 14.4 7.9 – 10.9 180 1.9 3.75 1.8 4.35 0.3 6.25 4.0 3.5 8.0 3.5 8.4+1.5 14.4 7.9 – 10.9 180 2.9 3.7 2.0 4.35 0.3 6.25 4.0 3.5 8.0 3.5 8.4+1.5 14.4 7.9 – 10.9 180 3.75 5.0 2.0 8.2 1.5 10.25 8.0 5.5 12.0 6.5 12.4+2 18.4 11.9 – 15.4 180 5.6 6.25 2.0 8.2 1.5 10.25 8.0 5.5 12.0 6.5 12.4+2 18.4 11.9 – 15.4 180 © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com V0003_VE • 4/30/2019 13 SMD Varistors VE High Temperature 150°C Terms and Definitions Term Rated AC Voltage Rated DC Voltage Supply Voltage Symbol Vrms Vdc V Leakage Current Idc Varistor Voltage Reference Current Clamping Voltage Protection Level Vn In Class Current Ic Voltage Clamping Ratio Vc/Vapp Jump Start Transient Vjump Rated Single Pulse Transient Energy Wmax Load Dump Transient WLD Rated Peak Single Pulse Transient Current Rated Transient Average Power Dissipation Capacitance Response Time Varistor Voltage Temperature Coefficient Insulation Resistance Isolation Voltage Operating Temperature Climatic Category Storage Temperature Vc Definition Maximum continuous sinusoidal AC voltage (< 5% total harmonic distortion) which may be applied to the component under continuous operation conditions at 25°C Maximum continuous DC voltage (< 5% ripple) which may be applied to the component under continuous operating conditions at 25°C The voltage by which the system is designated and to which certain operating characteristics of the system are referred; Vrms = 1, 1 x V The current passing through the varistor at Vdc and at 25°C or at any other specified temperature Voltage across the varistor measured at a given reference current In Reference current = 1 mA DC The peak voltage developed across the varistor under standard atmospheric conditions, when passing an 8/20 μs class current pulse A peak value of current which is 1/10 of the maximum peak current for 100 pulses at two per minute for the 8/20 μs pulse A figure of merit measure of the varistor clamping effectiveness as defined by the symbols Vc/Vapp, where (Vapp = Vrms or Vdc) The jump start transient resulting from the temporary application of an overvoltage in excess of the rated battery voltage. The circuit power supply may be subjected to a temporary overvoltage condition due to the voltage regulation failing or it may be deliberately generated when it becomes necessary to boost start the car Energy which may be dissipated for a single 10/1,000 μs pulse of a maximum rated current, with rated AC voltage or rated DC voltage also applied, without causing device failure Load Dump is a transient which occurs in an automotive environment. It is an exponentially decaying positive voltage which occurs in the event of a battery disconect while the alternator is still generating charging current with other loads remaining on the alternator circuit at the time of battery disconect Imax Maximum peak current which may be applied for a single 8/20 μs pulse, with, rated line voltage also applies, without causing device failure P Maximum average power which may be dissipated due to a group of pulses occurring within a specified isolated time period, without causing device failure at 25°C C tr Capacitance between two terminals of the varistor measured at 1 kHz The time lag between application of a surge and varistor's "turn-on" conduction action TC (Vn at 85°C – Vn at 25°C)/(Vn at 25°C) x 60°C) x 100 IR Minimum resistance between shorted terminals and varistor surface The maximum peak voltage which may be applied under continuous operating conditions between the varistor terminations and any conducting mounting surface The range of ambient temperature for which the varistor is designed to operate continuously as defined by the temperature limits of its climatic category UCT = Upper Category Temperature – the maximum ambient temperature for which a varistor has been designed to operate continuously, LCT = Lower Category Temperature – the minimum ambient temperature at which a varistor has been designed to operate continuously DHD = Dump Heat Test Duration Storage temperature range without voltage applied LCT/UCT/DHD © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com V0003_VE • 4/30/2019 14 SMD Varistors VE High Temperature 150°C KEMET Electronics Corporation Sales Offices For a complete list of our global sales offi ces, please visit www.kemet.com/sales. Disclaimer All product specifi cations, statements, information and data (collectively, the “Information”) in this datasheet are subject to change. The customer is responsible for checking and verifying the extent to which the Information contained in this publication is applicable to an order at the time the order is placed. All Information given herein is believed to be accurate and reliable, but it is presented without guarantee, warranty, or responsibility of any kind, expressed or implied. Statements of suitability for certain applications are based on KEMET Electronics Corporation’s (“KEMET”) knowledge of typical operating conditions for such applications, but are not intended to constitute – and KEMET specifi cally disclaims – any warranty concerning suitability for a specifi c customer application or use. The Information is intended for use only by customers who have the requisite experience and capability to determine the correct products for their application. Any technical advice inferred from this Information or otherwise provided by KEMET with reference to the use of KEMET’s products is given gratis, and KEMET assumes no obligation or liability for the advice given or results obtained. Although KEMET designs and manufactures its products to the most stringent quality and safety standards, given the current state of the art, isolated component failures may still occur. Accordingly, customer applications which require a high degree of reliability or safety should employ suitable designs or other safeguards (such as installation of protective circuitry or redundancies) in order to ensure that the failure of an electrical component does not result in a risk of personal injury or property damage. Although all product–related warnings, cautions and notes must be observed, the customer should not assume that all safety measures are indicted or that other measures may not be required. KEMET is a registered trademark of KEMET Electronics Corporation. © KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com V0003_VE • 4/30/2019 15