V14MLA0805LN

Varistor Products Surface Mount Multilayer Varistors (MLVs) > MLA Series RoHS MLA Varistor Series Description The MLA Series (also known as "ML" series) family of transient voltage surge suppression devices is based on the Littelfuse Multilayer fabrication technology. These components are designed to suppress a variety of transient events, including those specified in IEC 61000-4-2 or other standards used for Electromagnetic Compliance (EMC). The MLA Series is typically applied to protect integrated circuits and other components at the circuit board level. Size Table Metric 1005 1608 2012 0805 1206 1210 EIA 0402 The MLA Series is manufactured from semiconducting ceramics, and is supplied in a leadless, surface mount package. The MLA Series is compatible with modern reflow and wave soldering procedures. It can operate over a wider temperature range than Zener diodes, and has a much smaller footprint than plastichoused components. Littelfuse Inc. manufactures other multilayer series products. See the MLE Series data sheet for ESD applications, MHS Series data sheet for high-speed ESD applications, the MLN Series for multiline protection and the AUML Series for automotive applications. electromagnetic compliance of end products mount TVS Zeners in many applications Applications switching or other transient events such as EFT and surge voltage at the circuit board level 61000-4-2, MIL-STDand other industry specifications (see also the MLE or MLN Series) transient voltage protection for ICS and transistors Features current (8 x 20μs) (10 x 1000μs) clamping construction technology operating temp. range packaging assures better than UL94V-0 flammability rating types available RoHS compliant 0805, 1206 and 1210 chip sizes VM(DC) = 5.5V to 120V Absolute Maximum Ratings For ratings of individual members of a series, see device ratings and specifications table. Continuous Steady State Applied Voltage: DC Voltage Range (VM(DC)) AC Voltage Range (VM(AC)RMS) Transient: Non-Repetitive Surge Current, 8/20μs Waveform, (ITM) Non-Repetitive Surge Energy, 10/1000μs Waveform, (WTM) ) A Storage Temperature Range (TSTG) Temperature Coefficient ( V) of Clamping Voltage (VC) at Specified Test Current ©2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/ML.html of MLA.html for current information. ML Series Units V V 4 to 500 0.02 to 2.5 A J ºC ºC %/º C MLA Varistor Series MLA Series Varistor Products Device Ratings and Specifications Maximum Ratings (125º C) Specifications (25ºC) Maximum Maximum Non- Maximum Non- Maximum Clamping Nominal Voltage Typical Continuous repetitive Surge repetitive Surge Voltage at 1A (or as at 1mA DC Test Capacitance Working Voltage Current (8/20μs) Energy (10/1000μs) Noted) (8/20μs) Current at f = 1MHz VN(DC) VN(DC) VM(DC) VM(AC) ITM WTM VC C Min Max (V) (V) (A) (J) (V) (V) (V) (pF) 2.5 0.100 2.5 120 2.5 40 0.100 2.5 100 6000 5.5 4.0 20 0.050 21.0 10.8 220 5.5 4.0 20 0.050 15.9 21.5 5.5 4.0 0.100 500 5.5 4.0 0.100 450 5.5 4.0 120 1840 5.5 4.0 40 0.100 400 5.5 4.0 150 0.400 9.0 6.5 20 0.050 11.0 16.0 120 9.0 6.5 4 0.020 11.0 16.0 9.0 6.5 0.100 25.5 11.0 16.0 490 9.0 6.5 0.100 25.5 11.0 16.0 9.0 6.5 40 0.100 25.5 11.0 16.0 520 12.0 9.0 40 0.100 29.0 14.0 18.5 410 14.0 10.0 20 0.050 15.9 21.5 14.0 10.0 0.100 15.9 21.5 180 14.0 10.0 120 15.9 560 14.0 10.0 40 0.100 15.9 14.0 10.0 150 0.400 15.9 1400 18.0 14.0 20 0.050 50.0 22.0 28.0 40 18.0 14.0 0.100 50.0 22.0 28.0 120 18.0 14.0 120 44.0 22.0 28.0 520 18.0 14.0 40 0.100 44.0 22.0 28.0 290 18.0 14.0 150 0.400 44.0 22.0 28.0 18.0 14.0 500 2.500 44.0 at 2.5 22.0 28.0 1440 26.0 20.0 0.100 60.0 110 26.0 20.0 100 60.0 29.5 220 26.0 20.0 40 0.100 60.0 29.5 140 26.0 20.0 150 0.600 60.0 29.5 600 26.0 20.0 1.200 60.0 at 2.5 29.5 1040 25.0 0.100 46.0 90 25.0 0.100 46.0 90 25.0 280 1.200 68.0 at 2.5 1820 25.0 220 0.900 68.0 at 2.5 26.0 180 0.800 49.0 500 42.0 180 0.800 92.0 46.0 60.0 425 48.0 40.0 180 0.900 100 54.5 66.5 48.0 40.0 250 1.200 105.0 at 2.5 54.5 66.5 520 48.0 40.0 220 0.900 105.0 at 2.5 54.5 66.5 500 56.0 40.0 180 1.000 120.0 61.0 180 60.0 50.0 250 1.500 440 68.0 50.0 180 1.000 140.0 90.0 100 85.0 250 2.500 180.0 at 2.5 95.0 115.0 260 120.0 125 2.000 260.0 at 2.5 165.0 80 Part Number 5 V5.5MLA0402N V5.5MLA0402LN 5 4 V5.5MLA0805N V5.5MLA0805LN V5.5MLA1206N V9MLA0402N V9MLA0402LN 5 4 V9MLA0805LN V12MLA0805LN V14MLA0402N V14MLA0805N V14MLA0805LN V14MLA1206N V18MLA0402N V18MLA0805N V18MLA0805LN V18MLA1206N V18MLA1210N V26MLA0805N V26MLA0805LN V26MLA1206N V26MLA1210N V42MLA1206N V48MLA1206N V48MLA1210N V48MLA1210LN V56MLA1206N V60MLA1210N V68MLA1206N V85MLA1210N V120MLA1210N 1 'L' suffix is a low capacitance and energy version; Contact your Littelfuse sales representative for custom capacitance requirements 2 Typical leakage at 25ºC MLA Series Device Characteristics At low current levels, the V-I curve of the multilayer transient voltage suppressor approaches a linear (ohmic) relationship and shows a temperature dependent effect. At or below the maximum working voltage, the suppressor is in a high resistance modex (approaching 106Ω at its maximum rated working voltage). Leakage currents at maximum rated voltage are below 100μA, typically 25μA; for 0402 size below 20μA, typically 5μA. Typical Temperature Dependance of the Haracteristic Curve in the Leakage Region 100% SUPPRESSOR VOLTAGE IN PERCENT OF Clamping Voltage Over Temperature (VC at 10A) 100 CLAMPING VOLTAGE (V) V26MLA1206 V5.5MLA1206 10 -60 -40 -20 0 T VNOM VALUE A 25 oC (%) Figure 11 Energy Absorption/Peak Current Capability Energy dissipated within the MLA Series is calculated by multiplying the clamping voltage, transient current and transient duration. An important advantage of the multilayer is its interdigitated electrode construction within the mass of dielectric material. This results in excellent current distribution and the peak temperature per energy absorbed is very low. The matrix of semiconducting grains combine to absorb and distribute transient energy (heat) (see Speed of Response). This dramatically reduces peak temperature; thermal stresses and enhances device reliability. As a measure of the device capability in energy and peak current handling, the V26MLA1206A part was tested with multiple pulses at its peak current rating (150A, 8/20μs). At the end of the test,10,000 pulses later, the device voltage characteristics are still well within specification. 25 10% 1E -9 1E -8 o 50o 75o 1E -7 100o 125 oC 1E -6 1E -5 1E -4 1E -3 1E -2 Figure 10 SUPPRESSOR CURRENT (ADC) Speed of Response The Multilayer Suppressor is a leadless device. Its response time is not limited by the parasitic lead inductances found in other surface mount packages. The response time of the ZN than 1ns and the MLA can clamp very fast dV/dT events such as ESD. Additionally, in "real world" applications, the associated circuit wiring is often the greatest factor effecting speed of response. Therefore, transient suppressor placement within a circuit can be considered important in certain instances. Multilayer Internal Construction FIRED CERAMIC DIELECTRIC 100 PEAK CURRENT = 150A 8/20 s DURATION, 30s BETWEEN PULSES METAL ELECTRODES METAL END TERMINATION VOLTAGE V26MLA1206 DEPLETION REGION 10 0 2000 4000 6000 NUMBER OF PULSES 8000 10000 12000 Figure 13 DEPLETION REGION Figure 12 GRAINS ©2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/ML.html of MLA.html for current information. MLA Varistor Series Revision: November 10, 2010 MLA Series 20 40 60 80 TEMPERATURE ( oC) 100 120 140 Surface Mount Multilayer Varistors (MLVs) > MLA Series Varistor Products Lead (Pb) Soldering Recommendations The principal techniques used for the soldering of components in surface mount technology are IR Re-flow and Wave soldering. Typical profiles are shown on the right. The recommended solder for the MLA suppressor is TEMPERATURE °C Reflow Solder Profile 250 MAXIMUM TEMPERATURE 230°C Littelfuse also recommends an RMA solder flux. Wave soldering is the most strenuous of the processes. To avoid the possibility of generating stresses due to thermal shock, a preheat stage in the soldering process is recommended, and the peak temperature of the solder process should be rigidly controlled. When using a reflow process, care should be taken to ensure that the MLA chip is not subjected to a thermal gradient steeper than 4 degrees per second; the ideal gradient being 2 degrees per second. During the soldering process, preheating to within 100 degrees of the solder's peak temperature is essential to minimize thermal shock. still necessary to ensure that any further thermal shocks 200 150 40-80 SECONDS ABOVE 183°C RAMP RATE MLA Series Product Dimensions (mm) C E B NOTE D L W A Silver (Ag) epoxy paste. Dimension A B C D (max.) E L W IN 0.160 0.100 0.040 MM 4.06 2.54 1.02 IN 0.160 0.065 0.040 MM 4.06 1.65 1.02 1.80 IN 0.120 0.050 0.040 MM IN 0.100 MM 2.54 IN MM 0.020 1.02 1.10 0.040 0.015 0.89 1.00 0.4 1.6 0.8 0.020 0.024 0.024 0.010 0.51 0.61 0.60 0.25 1.00 0.50 0.020 0.125 0.100 0.50 0.020 0.125 0.50 0.010 0.25 2.01 1.60 0.049 1.25 2.54 0.060 Part Numbering System V 18 MLA 1206 X X X DEVICE FAMILY Littelfuse TVSS Device MAXIMUM DC WORKING VOLTAGE MULTILAYER SERIES DESIGNATOR DEVICE SIZE: 0201 = .024 inch x .012 inch (0.6 mm x 0.3 mm) 0402 = .04 inch x .02 inch (1.0 mm x 0.5 mm) 0603 = .063 inch x .031 inch (1.6 mm x 0.8 mm) 0805 = .08 inch x .08 inch (2.0 mm x 1.25 mm) 1206 = .126 inch x .063 inch (3.2 mm x 1.6 mm) 1210 = .126 inch x .1 inch (3.2 mm x 2.5 mm) PACKING OPTIONS (see Packaging table for quantities) T: 13in (330mm) Diameter Reel, Plastic Carrier Tape H: 7in (178mm) Diameter Reel, Plastic Carrier Tape R: 7in (178mm) Diameter Reel, Paper Carrier Tape A: Bulk Pack END TERMINATION OPTION No Letter: Standard N: Nickel Barrier Option (Matte Tin outer surface, plated on Nickel underlayer plated on silver base metal) CAPACITANCE OPTION No Letter: Standard L: Low Capacitance Version 1 V120MLA1210 standard shipping quantities are 1000 pieces per reel for the "H" option and 4000 pieces per reel for "T" option. Packaging* Quantity Device Size 1210 1206 0805 0402 13” Inch Reel ("T" Option) 8,000 10,000 10,000 10,000 N/A 7” Inch Reel ("H" Option) 2,000 2,500 2,500 2,500 N/A 7” Inch Reel ("R" Option) N/A N/A N/A 4,000 10,000 Bulk Pack ("A" Option) 2,000 2,500 2,500 2,500 N/A ©2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/ML.html of MLA.html for current information. MLA Varistor Series Revision: November 10, 2010 MLA Series 1210 Size 1206 Size 0805 Size 0603 Size 0402 Size Surface Mount Multilayer Varistors (MLVs) > MLA Series Varistor Products Tape and Reel Specifications D0 P0 P2 E For T and H Pack Options: PLASTIC CARRIER TAPE For R Pack Options: EMBOSSED PAPER CARRIER TAPE PRODUCT IDENTIFYING LABEL F K0 B0 W t1 D1 P1 A0 EMBOSSMENT TOP TAPE 8mm NOMINAL 178mm OR 330mm DIA. REEL Symbol A0 B0 K0 W F E P1 P2 P0 D0 D1 T1 Top Tape Thickness Width of Cavity Length of Cavity Depth of Cavity Width of Tape Description Dimensions in Millimeters 0402 Size 0603, 0805, 1206 & 1210 Sizes Dependent on Chip Size to Minimize Rotation. Dependent on Chip Size to Minimize Rotation. Dependent on Chip Size to Minimize Rotation. Distance Between Drive Hole Centers and Cavity Centers Distance Between Drive Hole Centers and Tape Edge Distance Between Cavity Centers Axial Drive Distance Between Drive Hole Centers & Cavity Centers Axial Drive Distance Between Drive Hole Centers Drive Hole Diameter N/A 0.1 Max 0.1 Max MLA Varistor Series Revision: November 10, 2010 ©2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/ML.html or MLA.html for current information.