V16AUMLA2220NS

Metal-Oxide Varistors (MOVs) Surface Mount Multilayer Varistors (MLVs) > AUML Series AUML Varistor Series Description RY The AUML Series of Multilayer Transient Surge Suppressors was specifically designed to suppress the destructive transient voltages found in an automobile. The most common transient condition results from large inductive energy discharges. The electronic systems in the automobile, for example, antilock brake systems, direct ignition systems, engine control, airbag control systems, wiper motor controls, and so on, are susceptible to damage from these voltage transients and thus require protection. The AUML transient suppressors have temperature independent suppression characteristics affording protection from -55ºC to 125ºC. The AUML suppressor is manufactured from semiconducting ceramics which offer rugged protection and excellent transient energy absorption in a small package. The devices are available in ceramic leadless chip form, eliminating lead inductance and assuring fast speed of response to transient surges. These Suppressors require significantly smaller space and land pads than Silicon TVS diodes, offering greater circuit board layout flexibility for the designer. Metric EIA 3216 1206 1210 4532 1812 5650 2220 Features Applications • Used to help achieve electromagnetic compliance of end products • Replace larger surface mount TVS Zeners in many applications EL • ESD protection for components sensitive to IEC 61000-4-2 (Level 4), MIL-STD883C, Method 3015.7, and other industry specifications (See Also the MLE or MLN Series) • Provides on-board transient voltage protection for ICs and transistors IM • Suppression of inductive switching or other transient events such as EFT and surge voltage at the circuit board level Also see the Littelfuse ML, MLN, and MLE Series of Multilayer Suppressors. IN 3225 A Size Table • AEC-Q200 compliant • High peak surge current capability • RoHS Compliant • Low Profile, compact industry standard chip size; (1206, 1210, 1812, and 2220 Sizes) • Load Dump energy rated per SAE Specification J1113 • Leadless, surface mount chip form • “Zero” Lead Inductance • Inherent bidirectional clamping • No Plastic or epoxy packaging assures better than 94V-0 • No temperature derating flammability rating up to 125ºC ambient • Variety of energy ratings available Absolute Maximum Ratings PR • For ratings of individual members of a series, see Device Ratings and Specifications chart. Continuous AUML Series Units 16, 18, 24, 48, 68 V 1.5 to 25 J Steady State Applied Voltage DC Voltage Range (VM(DC)) Transient Load Dump Energy, (WLD) Jump Start Capability (5 minutes), (VJUMP) 48 V Operating Ambient Temperature Range (TA) -55 to +125 O C Storage Temperature Range (TSTG) -55 to +150 O C Temperature Coefficient (αV) of Clamping Voltage (VC) at Specified Test Current AUML Series Device Ratings and Specifications Maximum Ratings (125°C) Specifications (25°C) Maximum Standby Leakage (at 13V DC) Maximum Continuous DC Voltage Jump Start Voltage (5min) Load dump Energy VM (DC) VJUMP WLD VN (DC) VN (DC) IL VC IP (V) (V) (J) Min (V) Max (V) (μA) (V) (A) V18AUMLA1206 18 24.5 1.5 23 32 50 40 1.5 V18AUMLA1210 18 24.5 3 23 32 50 40 1.5 V18AUMLA1812 18 24.5 6 23 32 100 40 5.0 V16AUMLA2220N 16 24.5 50 21.6@1mA 26.4@1mA 100@16V DC 42 10.0 V18AUMLA2220 18 24.5 25 23 32 200 40 10.0 V24AUMLA2220 24 24.5 25 32 39 200 60 10.0 V48AUMLA1812 48 24.5 6 54.5 66.5 100 90 5.0 V48AUMLA2220 48 24.5 25 54.6 V68AUMLA2220 68 24.5 25 77.2 Maximum Clamping Voltage (VC) at Test Current (8/20μs) RY A Part Number Nominal Voltage Test Current@ 10mA DC 66.5 200 105 10.0 94.4 200 135 10.0 Current, Energy and Power Derating Curve IN NOTES: 1. Average power dissipation of transients not to exceed 0.1W, 0.15W, 0.3W and 1W for model sizes 1206, 1210, 1812, and 2220 respectively. 2. Load dump: Min. time of energy input 40ms, interval 60sec (the load dump time constant Td differs from the time constant of energy input; load dump rating for ISO 7637-2 pulse 5a, please contact Littelfuse. 3. Thermal shock capability per Mil-Std-750, Method 1051: -55ºC to 125ºC, 5 minutes at 25ºC, 25 Cycles: 15 minutes at each extreme. 4. For application specific requirements, please contact Littelfuse. 5. Only available in “S” package and max. non-repetitive surge current (8/20μs) is 5000A. Peak Pulse Current Test Waveform for Clamping Voltage PR EL IM When transients occur in rapid succession, the average power dissipation is the energy (watt-seconds) per pulse times the number of pulses per second. The power so developed must be within the specifications shown on the Device Ratings and Characteristics Table for the specific device. Certain parameter ratings must be derated at high temperatures as shown below. Figure 1 Figure 2 01 = Virtual Origin of Wave T = Time from 10% to 90% of Peak T1 = Rise Time = 1.25 x T T2 = Decay Time Example - For an 8/20μs Current Waveform: 8μs = T1 = Rise Time 20μs = T2 = Decay Time © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/10/19 Metal-Oxide Varistors (MOVs) Surface Mount Multilayer Varistors (MLVs) > AUML Series Maximum Leakage Current/Clamping Voltage Curve for AUML Series at 25ºC Temperature Effects In the leakage region of the AUML suppressor, the device characteristics approaches a linear (ohmic) relationship and shows a temperature dependent affect. In this region the suppressor is in a high resistance mode (approaching 106Ω) and appears as a near open-circuit. Leakage currents at maximum rated voltage are in the microamp range. Figure 3 RY When clamping transients at higher currents (at and above the 10mA range), the AUML suppressor approaches a 1-10 characteristic. In this region the characteristics of the AUML are virtually temperature independent. Figure 3 shows the typical effect of temperature on the V-I characteristics of the AUML suppressor. Load Dump Energy Capability A A Load Dump transient occurs when the alternator load in the automobile is abruptly reduced. The worst case scenario of this transient occurs when the battery is disconnected while operating at full rated load. There are a number of different Load Dump specifications in existence in the automotive industry, with the most common one being that recommended by the Society of Automotive Engineers, specification #SAE J1113. Because of the diversity of these Load Dump specifications Littelfuse defines the Load Dump energy capability of the AUML suppressor range as that energy dissipated by the device itself, independent of the test circuit setup. The resultant Load Dump energy handling capability serves as an excellent figure of merit for the AUML suppressor. Standard Load Dump specifications require a device capability of 10 pulses at rated energy, across a temperature range of -40ºC to +125ºC. This capability requirement is well within the ratings of all of the AUML Series (Figure 6 on next page). M IN Typical V-I Characteristics of the V18AUMLA2220 at -40ºC, 25ºC, 85ºC and 125ºC PR EL I Figure 4 The very high energy absorption capability of the AUML suppressor is achieved by means of a highly controlled manufacturing process. This technology ensures that a large volume of suppressor material, with an interdigitated layer construction, is available for energy absorption in an extremely small package. Unlike equivalent rated Silicon TVS diodes, the entire AUML device volume is available to dissipate the Load Dump energy. Hence, the peak temperatures generated by the Load Dump transient are significantly lower and evenly dissipated throughout the complete device (Figure 5 below). This even energy dissipation ensures that there are lower peak temperatures generated at the P-N grain boundaries of the AUML suppressor. There are a number of different size devices available in the AUML Series, each one with a load dump energy rating, which is size dependent. © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/10/19 Metal-Oxide Varistors (MOVs) Surface Mount Multilayer Varistors (MLVs) > AUML Series Speed of Response Explanation of Terms The clamping action of the AUML suppressor depends on a conduction mechanism similar to that of other semiconductor devices (that is P-N Junctions). The apparent slow response time often associated with transient voltage suppressors (Zeners, MOVs) is often due to parasitic inductance in the package and leads of the device and less dependent of the basic material (Silicon, ZNO). Thus, the single most critical element affecting the response time of any suppressor is its lead induc-tance. The AUML suppressor is a surface mount device, with no leads or external packaging, and thus, it has virtually zero inductance. The actual response time of a AUML surge suppressor is in the 1 to 5 ns range, more than sufficient for the transients which are likely to be encountered in an automotive environment. Maximum Continuous DC Working Voltage (VM*(DC)++) This is the maximum continuous DC voltage which may be applied, up to the maximum operating temperature (125ºC), to the ML suppressor. This voltage is used as the reference test point for leakage current and is always less than the breakdown voltage of the device. RY Load Dump Energy Rating WLD+ This is the actual energy the part is rated to dissipate under Load Dump conditions (not to be confused with the "source energy" of a Load Dump test specification). Maximum Clamping Voltage VC+ A This is the peak voltage appearing across the suppressor when measured at conditions of specified pulse current and specified waveform (8/20µs). It is important to note that the peak current and peak voltage may not necessarily be coincidental in time. Multilayer Internal Construction Figure 5 M IN Leakage Current IL+ Nominal Voltage VNDC++ This is the voltage at which the AUML enters its conduction state and begins to suppress transients. In the automotive environment this voltage is defined at the 10mA point and has a minimum (VN(DC) MIN) and maximum (VN(DC) MAX) voltage specified. Additional Information PR EL I AUML Load Dump Pulsing over a Temperature Range of -55ºC to +125ºC In the nonconducting mode, the device is at a very high impedance (approaching 106Ω at its rated working voltage) and appears as an almost open circuit in the system. The leakage current drawn at this level is very low ( AUML Series 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. Reflow Solder Profile Reflow 1. Nickel Barrier (preferred) 2. Silver/Platinum Wave 1. Nickel Barrier (preferred) The recommended solder for the AUML suppressor is a 62/36/2 (Sn/Pb/Ag), 60/40 (Sn/Pb) or 63/37 (Sn/Pb). Littelfuse also recommends an RMA solder flux. Wave Solder Profile IN When using a reflow process, care should be taken to ensure that the AUML 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. Figure 9 A 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. RY The termination option available for each solder technique is: IM Once the soldering process has been completed, it is still necessary to ensure that any further thermal shocks are avoided. One possible cause of thermal shock is hot printed circuit boards being removed from the solder process and subjected to cleaning solvents at room temperature. The boards must be allowed to cool gradually to less than 50ºC before cleaning. Figure 10 EL Lead–free (Pb-free) Soldering Recommendations Littelfuse offers the Nickel Barrier Termination finish for the optimum Lead–free solder performance. Lead–free Re-flow Solder Profile PR The preferred solder is 96.5/3.0/0.5 (SnAgCu) with an RMA flux, but there is a wide selection of pastes and fluxes available with which the Nickel Barrier parts should be compatible. The reflow profile must be constrained by the maximums in the Lead–free Reflow Profile. For Lead–free Wave soldering, the Wave Solder Profile still applies. Note: the Lead–free paste, flux and profile were used for evaluation purposes by Littelfuse, based upon industry standards and practices. There are multiple choices of all three available, it is advised that the customer explores the optimum combination for their process as processes vary considerably from site to site. Figure 11 © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/10/19 Metal-Oxide Varistors (MOVs) Surface Mount Multilayer Varistors (MLVs) > AUML Series Product Dimensions (mm) CHIP LAYOUT DIMENSIONS RY PAD LAYOUT DIMENSIONS Note: Avoid metal runs in this area, parts are not recommended for use in applications using Silver (Ag) epoxy paste. 1206 Size SYMBOL 1210 Size 1812 Size MM IN MM IN 5.150 0.219 5.510 0.272 B 0.103 2.620 0.147 3.730 C 0.065 1.650 0.073 1.850 0.071 1.80 0.070 1.80 E 0.020 -/+ 0.010 0.50 -/+0.25 0.020 -/+ 0.010 0.50 -/+ 0.25 L 0.125 -/+ 0.012 3.20 -/+ 0.03 0.125 -/+ 0.012 W 0.060 -/+ 0.011 1.60 -/+ 0.28 0.100 -/+ 0.012 MM 8.000 0.172 4.360 0.240 6.190 0.073 1.850 0.073 1.850 0.07 1.80 0.118 3.00 0.020 -/+ 0.010 0.50 -/+ 0.25 0.030 -/+ 0.010 0.75 -/+ 0.25 3.20 -/+ 0.30 0.180 -/+ 0.014 4.50 -/+ 0.35 0.225 -/+ 0.016 5.70 -/+ 0.40 2.54 -/+ 0.30 0.125 -/+ 0.012 3.20 -/+ 0.30 0.197 -/+ 0.016 5.00 -/+ 0.40 M Part Numbering System IN 0.315 IN D (max.) MM 6.910 A IN 0.203 A 2220 Size V 18 AUML A 2220 X X DEVICE FAMILY TVSS Device EL I MAXIMUM DC WORKING VOLTAGE PACKING OPTIONS A: Bulk Pack, 2500 pieces H: 7in (178mm) Diameter Reel* S: 7in (178mm) Diameter Reel* T: 13in (330mm) Diameter Reel* * See quanttities in Packaging table below AUTOMOTIVE MULTILAYER DESIGNATOR END TERMINATION OPTION N or No Letter: Nickel Barrier LOAD DUMP ENERGY RATING INDICATOR DEVICE SIZE i.e., 220 mil x 200 mil Packaging* Quantity 13 Inch Reel (‘T’ Option) 7 Inch Reel (‘H’ Option) 7 Inch Reel (‘S’ Option) Bulk Pack (‘A’ Option) 1206 10,000 2,500 NA 2,500 PR Device Size 1210 8,000 2,000 NA 2,000 1812 4,000 1,000 NA 1,000 2220 4,000 1,000 500 1,000 * It is recommended that the parts be kept in the sealed bag provided and that parts be used as soon as possible when removed from bags. © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/10/19 Metal-Oxide Varistors (MOVs) Surface Mount Multilayer Varistors (MLVs) > AUML Series Symbol RY Tape and Reel Specifications Description Dimensions in Millimeters Width of Cavity Dependent on Chip Size to Minimize Rotation. B0 Length of Cavity K0 Depth of Cavity W Width of Tape F Distance Between Drive Hole Centers and Cavity Centers Dependent on Chip Size to Minimize Rotation. Dependent on Chip Size to Minimize Rotation. Distance Between Cavity Center P2 P0 D0 Drive Hole Diameter D1 Diameter of Cavity Piercing T1 T2 12 -/+ 0.2 5.4 -/+ 0.5 1.75 -/+ 0.1 1.75 -/+ 0.1 4 -/+ 0.1 8-/+ 0.1 Axial Distance Between Drive Hole Centers and Cavity Centers 2 -/+ 0.1 2 -/+ 0.1 Axial Distance Between Drive Hole Centers 8 -/+ 0.1 8 -/+ 0.1 1.55 -/+ 0.05 1.55 -/+ 0.05 1.05 -/+ 0.05 1.55 -/+ 0.05 Embossed Tape Thickness 0.3 Max 0.4 Max Top Tape Thickness 0.1 Max 0.1 Max NOTE: Dimensions in millimeters. • Conforms to EIA-481-1, Revision A • Can be supplied to IEC publication 286-3 Tape 8 -/+ 0.2 3.5 -/+ 0.5 IN Distance Between Drive Hole Centers and Tape Edge IM E P1 8mm Wide Tape 1206 1210 12mm Wide Tape 1812 2220 EL Chip Size A A0 Special Packaging Tape and reel is the standard packaging method of the AUML Series. The standard 300 millimeter (13–inch) reel utilized contains 4000 pieces for the 2200 and 1812 chips, 8000 pieces for the 1210 chip and 10,000 pieces for the 1206 size. Option1: PR Standard Packaging To order: add 'T' to the standard part number, for example V18AUMLA222OT. 178 millimeter (7–inch) reels containing 1000 (2220, 1812), 2000 (1210), 2500 (1206), pieces are available. To order add 'H' to the standard part number, for example V18AUMLA2220H. Option 2 For small sample quantities (less than 100 pieces) the units are shipped bulk pack. To order add 'A' to the standard part number, for example V18AUMLA2220A. Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics. © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/10/19