Multilayer Surface Mount Transient Voltage Surge Suppressors Seri
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Multilayer Surface Mount Transient Voltage Surge Suppressors
Series family Transient Voltage Surge Suppression devices based Littelfuse Multilayer fabrication technology. These components designed suppress variety transient events, including those specified other standards used Electromagnetic Compliance (EMC). Series typically applied protect integrated circuits other components circuit board level. wide operating voltage energy range make Series suitable numerous applications power supply, control signal lines. Series manufactured from semiconducting ceramics, providing bi-directional voltage clamping supplied leadless, surface mount form compatible with modern reflow wave soldering procedures. operate over wider temperature range than zener diodes, inherently bi-directional, much smaller footprint than plastic-housed components. Littelfuse Inc. manufactures other Multilayer Series products. Series data sheet applications, series data sheet high speed applications, multiline protection AUML Series automotive applications.
Features
Leadless 0402, 0603, 0805, 1206 1210 Chip Size Multilayer Ceramic Construction Technology Operating Temperature Range Operating Voltage Range VM(DC) =5.5V 120V Rated Surge Current (8x20µs) Rated Energy (10x1000µs) Inherent Bi-directional Clamping Plastic Epoxy Packaging Assures Better than 94V-0 Flammability Rating. Standard Capacitance Types Available
Applications
Suppression Inductive Switching Other Transient Events Such Surge Voltage Circuit Board Level. Protection Components Sensitive 61000-4-2, MIL-STD 883C Method 3015.7 Other Industry Specifications (See Also Series). Provides On-Board Transient Voltage Protection Transistors. Used Help Achieve Electromagnetic Compliance Products Replace Larger Surface Mount Zeners Many Applications
Series
Absolute Maximum Ratings. ratings individual members series, Device Ratings Specifications table.
Series Continuous: Steady State Applied Voltage: Voltage Range (VM(DC)). Voltage Range (VM(AC)RMS). Transient: Non-Repetitive Surge Current, 8/20µs Waveform (ITM). Non-Repetitive Surge Energy, 10/1000µs Waveform (WTM). UNITS
0.02 +125 +150 <0.01
Operating Ambient Temperature range (TA). Storage Temperature (TSTG). Temperature Coefficient Clamping Voltage (VC)
Device Ratings Specifications
MAXIMUM RATINGS MAXIMUM NONREPETITIVE SURGE CURRENT (8/20µs) I(A) MAXIMUM NONREPETITIVE SURGE ENERGY (10/1000µs) W(J) 0.050 0.050 0.020 0.050 MAXIMUM CLAMPING VOLTAGE
NOTED)
SPECIFICATIONS
PART NUMBER
MAXIMUM CONTINUOUS WORKING VOLTAGE VM(DC) VM(AC)
(8/20µs)
NOMINAL VOLTAGE TEST CURRENT VN(DC) VN(DC) 15.9 15.9 15.9 15.9 15.9 18.5 20.3 20.3 20.3 20.3 20.3
TYPICAL CAPACITANCE 1MHz (pF) 1100 2200 1200 6000 1600 4500 1600
V3.5MLA0603 V3.5MLA0805 V3.5MLA0805L V3.5MLA1206 V5.5MLA0402 V5.5MLA0603 V5.5MLA0805 V5.5MLA0805L V5.5MLA1206 V9MLA0402 V9MLA0402L V9MLA0603 V9MLA0805L V12MLA0805L V14MLA0402 V14MLA0603 V14MLA0805 V14MLA0805L V14MLA1206
15.5 15.5 15.5 15.5 15.5
Series
MAXIMUM RATINGS MAXIMUM NONREPETITIVE SURGE CURRENT (8/20µs) I(A) MAXIMUM NONREPETITIVE SURGE ENERGY (10/1000µs) W(J) 0.050 MAXIMUM CLAMPING VOLTAGE
NOTED)
SPECIFICATIONS
PART NUMBER
MAXIMUM CONTINUOUS WORKING VOLTAGE VM(DC) VM(AC)
(8/20µs)
NOMINAL VOLTAGE TEST CURRENT VN(DC) VN(DC) 29.5 29.5 29.5 29.5 54.5 54.5 38.5 38.5 38.5 38.5 66.5 66.5
TYPICAL CAPACITANCE 1MHz (pF) 1100 1250 1000 1575 1530
V18MLA0402 V18MLA0603 V18MLA0805 V18MLA0805L V18MLA1206 V18MLA1210 V26MLA0603 V26MLA0805 V26MLA0805L V26MLA1206 V26MLA1210 V30MLA0603 V30MLA0805L V30MLA1210 V30MLA1210L V33MLA1206 V42MLA1206 V48MLA1210 V48MLA1210L V56MLA1206 V60MLA1210 V68MLA1206 V85MLA1210 V120MLA1210
NOTES: -suffix capacitance energy version, Contact your Littelfuse Sales Representative custom capacitance requirements. Typical leakage <25µA, maximum leakage 50µA VM(DC); 0402-size, typical leakage <5µA, maximum leakage 10µA VM(DC); Average power dissipation transients 0402, 0603, 0805, 1206 1210 sizes exceed 0.03W, 0.05W, 0.1W, 0.1W 0.15W respectively.
Series
When transients occur rapid succession, average power dissipation energy (wattseconds) pulse times number pulses second. power developed must within specifications shown Device Ratings Specifications table specific device. applications exceeding ambient temperature, peak surge current energy ratings must derated shown Figure
AMBIENT TEMPERATURE
PERCENT PEAK VALUE
Temperature De-rating
TIME
Figure FIGURE PEAK PULSE CURRENT TEST WAVEFORM CLAMPING VOLTAGE
VIRTUAL ORIGIN WAVE TIME FROM PEAK VIRTUAL FRONT TIME 1.25 VIRTUAL TIME HALF VALUE (IMPULSE DURATION) EXAMPLE: 8/20µs CURRENT WAVEFORM: VIRTUAL FRONT TIME 20µs VIRTUAL TIME HALF VALUE
FIGURE PEAK CURRENT ENERGY DERATING CURVE
Maximum Transient Characteristic Curves
MAXIMUM CLAMPING VOLTAGE
Varistor Voltage
MAXIMUM LEAKAGE
V18MLA0402 V14MLA0402 V9MLA0402 V5.5MLA0402
10µA 100µA
Current
10mA
100mA
100A
FIGURE LIMIT CHARACTERISTIC V5.5MLA0402 V18MLA0402
Series
Maximum Transient Characteristic Curves (Continued)
Varistor Voltage
MAXIMUM CLAMPING VOLTAGE
V9MLA0402L
MAXIMUM LEAKAGE
10µA
100µA
Current
10mA
100mA
FIGURE LIMIT CHARACTERISTIC V9MLA0402L
MAXIMUM CLAMPING VOLTAGE MAXIMUM LEAKAGE
Varistor Voltage
V30MLA0603 V26MLA0603 V18MLA0603 V14MLA0603 V9MLA0603 V5.5MLA0603
10µA 100µA 10mA 100mA
V3.5MLA0603 100A
Current
FIGURE LIMIT CHARACTERISTIC V3.5MLA0603 V30MLA0603
MAXIMUM CLAMPING VOLTAGE MAXIMUM LEAKAGE
Varistor Voltage
V30MLA0805L V26MLA0805L V18MLA0805L V14MLA0805L V12MLA0805L V9MLA0805L V5.5MLA0805L V3.5MLA0805L
10µA 100µA 10mA 100mA 100A
Current
FIGURE LIMIT CHARACTERISTIC V3.5MLA0805L V30MLA0805L
Series
Maximum Transient Characteristic Curves (Continued)
MAXIMUM CLAMPING VOLTAGE MAXIMUM LEAKAGE
Varistor Voltage
V26MLA0805 V18MLA0805 V14MLA0805 V5.5MLA0805 V3.5MLA0805
10µA 100µA 10mA 100mA 100A
Current
FIGURE LIMIT CHARACTERISTIC V3.5MLA0805 V26MLA0805
1000
V68MLA1206 MAXIMUM LEAKAGE V56MLA1206 V42MLA1206 MAXIMUM CLAMPING VOLTAGE
Varistor Voltage
V33MLA1206
V26MLA1206 V18MLA1206 V14MLA1206 V5.5MLA1206 V3.5MLA1206
10µA 100µA 10mA 100mA 100A
Current
FIGURE LIMIT CHARACTERISTIC V3.5MLA1206 V68MLA1206
1000
MAXIMUM CLAMPING VOLTAGE MAXIMUM LEAKAGE
Varistor Voltage
V120MLA1210 V85MLA1210
V60MLA1210 V48MLA1210, V48MLA1210L V30MLA1210, V30MLA1210L V26MLA1210 V18MLA1210
10µA 100µA 10mA 100mA 100A
Current
FIGURE LIMIT CHARACTERISTIC V18MLA1210 V120MLA1210
Series
Device Characteristics
current levels, curve multilayer transient voltage suppressor approaches linear (ohmic) relationship shows temperature dependant effect (figure 10). below maximum working voltage, suppressor high resistance mode (approaching maximum rated working voltage). Leakage currents maximum rated voltage below 50µA, typically 25µA; 0402-size: below 10µA, typically 5µA.
SUPPRESSOR VOLTAGE PERCENT VNOM 25°C
FIGURE MULTILAYER INTERNAL CONSTRUCTION
CLAMPING VOLTAGE V26MLA1206
V5.5MLA1206
100%
TEMPERATURE (°C)
FIGURE CLAMPING VOLTAGE OVER TEMPERATURE 10A)
25°c
100°
125°C
1E-9
1E-8
1E-7
1E-6
1E-5
1E-4
1E-3
1E-2
Energy Absorption/Peak Current Capability
Energy dissipated within calculated multiplying clamping voltage, transient current transient duration. important advantage multilayer interdigitated electrode construction within mass dielectric material. This results excellent current distribution peak temperature energy absorbed very low. matrix semiconducting grains combine absorb distribute transient energy (heat) (Figure 11). This dramatically reduces peak temperature, thermal stresses enhances device reliability. measure device capability energy peak current handling, V26MLA1206A part tested with multiple pulses peak current rating (150A, 8/20µs). test, 10,000 pulses later, device voltage characteristics still well within specification (figure 13).
SUPPRESSOR CURRENT
FIGURE TYPICAL TEMPERATURE DEPENDANCE CHARACTERISTIC CURVE LEAKAGE REGION
Speed Response
Multilayer Suppressor leadless device. response time limited parasitic lead inductances found other surface mount packages. response time Zinc Oxide dielectric material less than 1nanosecond clamp very fast dV/dt events such ESD. Additionally, "real world" applications, associated circuit wiring often greatest factor affecting speed response. Therefore, transient suppressor placement within circuit considered important certain instances.
PEAK CURRENT =150A 8/20µs DURATION, BETWEEN PULSES
VOLTAGE
V26MLA1206
2000 4000 6000 8000 10000 12000 NUMBER PULSES
FIGURE REPETITIVE PULSE CAPABILITY
Series
Soldering Recommendations
principal techniques used soldering components surface mount technology infrared (IR) re-flow, vapour phase re-flow wave soldering. Typical profiles shown figures When wave soldering, suppressor attached circuit board means adhesive. assembly then placed conveyor through soldering process contact wave. With vapour phase re-flow, device placed solder paste substrate. solder paste heated, re-flows solders unit board. recommended solder suppressor 62/36/2 (Sn/Pb/Ag), 60/40 (Sn/Pb) 63/37 (Sn/Pb). Littelfuse also recommends solder flux. Wave soldering most strenuous processes. avoid possibility generating stresses thermal shock, preheat stage soldering process recommended, peak temperature solder process should rigidly controlled. 0402-size devices, re-flow recommended. When using re-flow process, care should taken ensure that chip subjected thermal gradient steeper than degrees second; ideal gradient being degrees second. During soldering process, preheating within degrees solder's peak temperature essential minimize thermal shock. Examples soldering conditions suppressor given tables below. Once soldering process been completed, still necessary ensure that further thermal shocks avoided. possible cause thermal shock printed circuit boards being removed from solder process subjected cleaning solvents room temperature. boards must allowed cool gradually less than before cleaning.
AXIM PERATURE
RATE
SECONDS ABOVE
PREHEAT DWELL
PREHEAT ZONE
TIME (MINUTES)
FIGURE REFLOW SOLDER PROFILE
AXIM WAVE
SECOND PREHEAT
FIRST PREHEAT
TIME MINUTES)
FIGURE WAVE SOLDER PROFILE
Termination Options
Littelfuse offers types electrode termination finish Multilayer product series: Silver/Platinum (standard, available 0402) Silver/Palladium (optional)
AXIM PERATURE RATE
SECONDS ABOVE
(The ordering information section describes designate them.)
PREHEAT ZONE
TIME MINUTES)
FIGURE VAPOR PHASE SOLDER PROFILE
Series
Recommended Outline
Note: Avoid metal runs this area TABLE LAYOUT DIMENSIONS SIZE 1206 SIZE 0805 SIZE 0603 SIZE DEVICE DEVICE DEVICE Inch Inch Inch 0.203 5.15 0.144 3.65 0.110 2.80 0.103 2.62 0.084 2.13 0.064 1.62 0.065 1.65 0.058 1.48 0.044 1.12
DIMENSION
1210 SIZE DEVICE Inch 0.219 5.53 0.147 3.73 0.073 1.85
0402 SIZE DEVICE Inch 0.100 2.54 0.048 1.22 0.030 0.76
Explanation Terms
Rated Voltage (VM(DC)) This maximum continuous voltage which applied maximum operating temperature device. rated operating voltage (working voltage) also used reference point leakage current. This voltage always less than breakdown voltage device. Rated Voltage (VM(AC)RMS) This maximum continuous sinusoidal voltage which applied. This voltage applied temperature maximum operating temperature device. Maximum Non-Repetitive Surge Current (ITM) This maximum peak current which applied 8/20µs impulse, with rated voltage also appled, without causing device failure. pulse applied either polarity with same confidence factor. Figure waveform description. Maximum Non-Repetitive Surge Energy (WTM) This maximum rated transient energy which dissipated single current impulse specified impulse duration (10/1000µs), with rated voltage applied, without causing device failure. Leakage (IL) Rated Voltage non-conducting mode, device very high impedance (>106) appears essentially open circuit system. leakage current drawn this level very low. device ratings. Nominal Voltage (VN(DC)) This voltage which device changes from state state enters conduction mode operation. voltage usually characterized point specified minimum maximum voltage listed. Clamping Voltage (VC) This voltage appearing across suppressor when measured conditions specified pulse current specified waveform. Device Ratings. Capacitance This capacitance device specified frequency (1MHz) bias (1Vp-p). Device Ratings.
Series
Mechanical Dimensions
DIMENSION Max.
1210 Inch
1206 Inch
CHIP SIZE 0805 Inch
0603 Inch
0402 Inch
0.113 2.87 0.071 1.80 0.043 1.10 0.035 0.90 0.024 0.60 0.02±0.01 0.50±0.25 0.02±0.01 0.50±0.25 0.01±0.029 0.50±0.25 0.015±0.008 0.4±0.2 0.010 0.006 0.25 0.15 0.125±.012 3.20±0.30 0.125±0.012 3.20±0.30 0.079±0.008 2.01±0.20 0.063±0.006 1.6±0.15 0.039 0.004 0.10±0.012 2.54±0.30 0.06±0.011 1.60±0.28 0.049±0.008 1.25±0.20 0.032±0.06 0.8±0.15 0.020 0.004
Ordering Information
VxxML TYPES DEVICE FAMILY Littelfuse TVSS Device MAXIMUM WORKING VOLTAGE MULTILAYER SERIES DESIGNATOR PERFORMANCE DESIGNATOR Standard (See Data Sheet) Array (See Data Sheet) 1206 PACKING OPTIONS 13in (330mm) Diameter Reel (178mm) Diameter Reel Bulk Pack TERMINATION OPTION Letter: Ag/Pt (Standard) Ag/Pd (0402- 0603-size only available Ag/Pd CAPACITANCE OPTION Letter: Standard Capacitance Version (Where available device ratings standard versions)
DEVICE SIZE i.e. 120mil 60mil (3mm 1.5mm)
Standard Shipping Quantities
DEVICE SIZE 1210 1206 0805 0603 0402 INCH REEL ("T" OPTION) 8,000 10,000 10,000 10,000 INCH REEL ("H" OPTION) 2,500 2,500 2,500 2,500 10,000 BULK PACK ("A" OPTION) 2,500 2,500 2,500 2,500
Series
Tape Reel Specifications
Conforms EIA-481-1, Revision supplied publication 286-3 DESCRIPTION Width Cavity Length Cavity Depth Cavity Width Tape Distance Between Drive Hole Centers Cavity Centers Distance Between Drive Hole Centers 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 Diameter Cavity Piercing Tape Thickness DIMENSIONS MILLIMETERS 0402-Size 0603- 0805- 1206- 1210-Sizes Dependent Chip Size Minimize Rotation Dependent Chip Size Minimize Rotation Dependent Chip Size Minimize Rotation ±0.2 ±0.05 ±0.05 1.75 ±0.1 ±0.1 ±.0.1 ±0.1 1.55 ±0.05 1.05 ±0.05 Max.
SYMBOL
Littelfuse products manufactured, assembled tested under ISO9000 quality systems certification.
Littelfuse products sold description only. Littelfuse reserves right make changes specification time without notice. Accordingly, reader cautioned verify that data sheets current before placing orders. Information furnished Littelfuse believed accurate reliable. However responsibility assumed Littelfuse subsidiaries use, infringements patents patent rights third parties which result from use. license granted implication otherwise under patent patent rights Littelfuse Inc. subsidiaries.
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