Varistor Products Surface Mount Multilayer Varistors (MLVs) > MLA Automotive Series RoHS MLA Automotive Varistor Series Description The wide operating voltage and energy range make the MLA Automotive Series suitable for numerous applications on power supply, control and signal lines. The MLA Automotive Series is manufactured from semiconducting ceramics, and is supplied in a leadless, surface mount package. The MLA Automtove Series is compatible with modern reflow and wave soldering procedures. Size Table Metric EIA 2012 1206 1210 It can operate over a wider temperature range than Zener diodes, and has a much smaller footprint than plastichoused components. Features Applications t 4VQQSFTTJPOPG inductive switching or other transient events such as EFT and surge voltage at the circuit board level t &4%QSPUFDUJPOGPS*&$ 61000-4-2, MIL-STDDNFUIPE and other industry specifications t 3P)4DPNQMJBOU t 3BUFEGPSFOFSHZ YT t -FBEMFTT 1206 and 1210 chip sizes t *OIFSFOUCJEJSFDUJPOBM clamping t .VMUJMBZFSDFSBNJD construction technology t /PQMBTUJDPSFQPYZ packaging assures better than UL94V-0 flammability rating t "&$2DPNQMJBOU t 1SPWJEFTPOCPBSE transient voltage protection for ICS and transistors t 6TFEUPIFMQBDIJFWF electromagnetic compliance of end products t 3FQMBDFMBSHFSTVSGBDF mount TVS Zeners in many applications t $UP $ operating temp. range t 0QFSBUJOHWPMUBHFSBOHF VM(DC)7UP7 t 4UBOEBSEMPX capacitance types available t 3 BUFEGPSTVSHF DVSSFOU YT Absolute Maximum Ratings For ratings of individual members of a series, see device ratings and specifications table. Continuous Steady State Applied Voltage: %$7PMUBHF3BOHF 7M(DC)) "$7PMUBHF3BOHF 7. "$ 3.4) Transient: /PO3FQFUJUJWF4VSHF$VSSFOU s Waveform, (ITM) /PO3FQFUJUJWF4VSHF&OFSHZ s Waveform, (WTM) 0QFSBUJOH"NCJFOU5FNQFSBUVSF3BOHF 5A) 4UPSBHF5FNQFSBUVSF3BOHF 5STG) Temperature Coefficient (DV) of Clamping Voltage (VC) at Specified Test Current (c)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. MLA Auto Series Units UP UP V V VQUP UP UP UP A J C C <0.01 $ MLA Automotive Varistor Series Revision: December 16, 2010 MLA Auto Series The MLA Automotive Series 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 Automotive Series is typically applied to protect integrated circuits and other components at the circuit board level. Varistor Products Surface Mount Multilayer Varistors (MLVs) > MLA Automotive Series Device Ratings and Specifications Part Number 7.-"/)"650 7.-"/)"650 7.-"-/)"650 7.-"/)"650 7.-"/)"650 7.-"/)"650 7.-"-/)"650 7.-"/)"650 7.-"/)"650 7.-"-/)"650 7.-"-/)"650 7.-"/)"650 7.-"/)"650 7.-"-/)"650 7.-"/)"650 7.-"/)"650 7.-"/)"650 7.-"-/)"650 7.-"/)"650 7.-"/)"650 7.-"/)"650 7.-"/)"650 7.-"-/)"650 7.-"/)"650 7.-"/)"650 7.-"/)"650 7.-"-/)"650 7.-"/)"650 7.-"-/)"650 7.-"/)"650 7.-"/)"650 7.-"/)"650 7.-"-/)"650 Maximum Ratings (125 C) Maximum Maximum Maximum NonNon-repetitive Continuous repetitive Surge Surge Energy Working Voltage Current (8/20s) (10/1000s) Specifications (25C) Maximum Clamping Nominal Voltage Typical Voltage at 1A (or as at 1mA DC Test Capacitance Noted) (8/20s) Current at f = 1MHz VM(DC) VM(AC) ITM WTM VC (V) 9.0 9.0 12.0 14.0 14.0 14.0 14.0 26.0 26.0 26.0 26.0 26.0 42.0 (V) 4.0 4.0 4.0 4.0 9.0 10.0 10.0 10.0 10.0 14.0 14.0 14.0 14.0 14.0 20.0 20.0 20.0 20.0 20.0 26.0 40.0 40.0 (A) 120 40 100 120 40 40 40 120 40 120 40 100 40 220 220 (J) 0.100 0.100 0.100 0.100 0.400 0.100 0.100 0.100 0.100 0.100 0.400 0.100 0.100 0.400 0.100 0.100 0.600 1.200 0.100 0.100 1.200 0.900 1.200 0.900 (V) 29.0 44.0 44.0 44.0 BU 60.0 60.0 60.0 60.0 BU BU BU 92.0 BU BU V/ %$ Min (V) 11.0 11.0 14.0 22.0 22.0 22.0 22.0 22.0 46.0 V/ %$ Max (V) 16.0 16.0 46.0 46.0 49.0 60.0 C (pF) 6000 400 490 410 1400 120 290 1440 110 220 140 600 1040 90 90 /05&4 h-hTVGmYJTBMPXDBQBDJUBODFBOEFOFSHZWFSTJPO$POUBDUZPVS-JUUFMGVTFTBMFTSFQSFTFOUBUJWFGPSDVTUPNDBQBDJUBODFSFRVJSFNFOUT 5ZQJDBMMFBLBHFBU$" NBYJNVNMFBLBHFA at VM(DC) "WFSBHFQPXFSEJTTJQBUJPOPGUSBOTJFOUTGPS BOETJ[FTOPUUPFYDFFE8 8 8BOE8SFTQFDUJWFMZ MLA Automotive Varistor Series Revision: December 16, 2010 (c)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. Varistor Products Surface Mount Multilayer Varistors (MLVs) > MLA Automotive Series Peak Current and Energy Derating Curve Peak Pulse Current Test Waveform for Clamping Voltage PERCENT OF PEAK VALUE 100 50 0 T TIME O1 T1 Figure 2 100 T2 80 60 40 20 0 -55 Figure 1 50 60 70 80 90 100 110 120 130 140 150 AMBIENT TEMPERATURE ( oC) (c)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. 017JSUVBM0SJHJOPG8BWF 55JNFGSPNUPPG1FBL T13JTF5JNFY5 T2 = Decay Time Example 'PSBOT$VSSFOU8BWFGPSN s = T13JTF5JNF 20s = T2 = Decay Time MLA Automotive Varistor Series Revision: December 16, 2010 MLA Auto Series PERCENT OF RATED VALUE When transients occur in rapid succession, the average power dissipation is the energy (watt-seconds) per pulse times the number of pulses per second. The power so developed must be within the specifications shown POUIF%FWJDF3BUJOHTBOE4QFDJmDBUJPOT5BCMFGPSUIF TQFDJmDEFWJDF'PSBQQMJDBUJPOTFYDFFEJOH$BNCJFOU temperature, the peak surge current and energy ratings must be derated as shown below. Varistor Products Surface Mount Multilayer Varistors (MLVs) > MLA Automotive Series Limit V-I Characteristic for V3.5MLA0603 to V30MLA0603 Limit V-I Characteristic for V3.5MLA0805L to V30MLA0805L 1000 1000 V30MLA0805L V26MLA0805L V30MLA0603 V18MLA0805L V26MLA0603 Varistor Voltage (V) V18MLA0603 100 Varistor Voltage (V) V14MLA0603 10 V9MLA0603, V9MLA0603L V14MLA0805L 100 10 V12MLA0805L V9MLA0805L V5.5MLA0603, V5.5MLA0603L V5.5MLA0805L V3.5MLA0603 V3.5MLA0805L 1 10A 1 10A 100A 1mA Figure 3 10mA Current (A) 100mA 1A 10A 1mA 10mA 100mA 1A 10A 100A Current (A) Figure 4 Limit V-I Characteristic for V3.5MLA0805 to V26MLA0805 Limit V-I Characteristic for V3.5MLA1206 to V42MLA1206 1000 1000 100 100 Varistor Voltage (V) Varistor Voltage (V) 100A 100A V26MLA0805 10 V18MLA0805 V42MLA1206 V33MLA1206 V26MLA1206 V18MLA1206 V14MLA1206 V5.5MLA1206 V3.5MLA1206 10 V14MLA0805 V5.5MLA0805 V3.5MLA0805 1 10A 100A 1mA 10mA 100mA 1A 10A 100A 1000A Current (A) Figure 5 1 10A 100A 1mA 10mA 100mA Current (A) 1A 10A 100A 1000A Figure 7 Limit V-I Characteristic for V18MLA1210 to V48MLA1210 1000 MAXIMUM CLAMPING VOLTAGE MAXIMUM LEAKAGE Varistor Voltage (V) 100 V48MLA1210, V48MLA1210L V30MLA1210, V30MLA1210L V26MLA1210 10 V18MLA1210 1 10A 100A 1mA Figure 6 10mA 100mA 1A 10A 100A 1000A CURRENT (A) MLA Automotive Varistor Series Revision: December 16, 2010 (c)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. Varistor Products Surface Mount Multilayer Varistors (MLVs) > MLA Automotive Series Clamping Voltage Over Temperature (VC at 10A) 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. "UPSCFMPXUIFNBYJNVNXPSLJOHWPMUBHF UIFTVQQSFTTPS JTJOBIJHISFTJTUBODFNPEFY BQQSPBDIJOH6 at its NBYJNVNSBUFEXPSLJOHWPMUBHF -FBLBHFDVSSFOUTBU NBYJNVNSBUFEWPMUBHFBSFCFMPX" UZQJDBMMZA. CLAMPING VOLTAGE (V) 100 5ZQJDBM5FNQFSBUVSF%FQFOEBODFPGUIF)BSBDUFSJTUJD $VSWFJOUIF-FBLBHF3FHJPO V26MLA1206 V5.5MLA1206 -40 Figure 9 -20 0 40 60 80 20 TEMPERATURE ( oC) 100 120 140 Energy Absorption/Peak Current Capability 25 10% 1E -9 o 50o 75o 1E -8 100o 125 oC 1E -7 1E -6 1E -5 1E -4 1E -3 1E -2 SUPPRESSOR CURRENT (ADC) Figure 8 Speed of Response The Multilayer Suppressor is a leadless device. Its response time is not limited by the parasitic lead inductances found in other surface mount packages. The response time of the Z/0EJFMFDUSJDNBUFSJBMJTMFTTUIBOOTBOEUIF.-" "VUPNPUJWF4FSJFTDBODMBNQWFSZGBTUE7E5FWFOUTTVDIBT ESD. Additionally, in "real world" applications, the associated circuit wiring is often the greatest factor effecting speed of response. Therefore, transient suppressor placement within a circuit can be considered important in certain instances. Energy dissipated within the MLA Automotive Series is calculated by multiplying the clamping voltage, transient current and transient duration. An important advantage of the multilayer is its interdigitated electrode construction within the mass of dielectric material. This results in FYDFMMFOUDVSSFOUEJTUSJCVUJPOBOEUIFQFBLUFNQFSBUVSFQFS FOFSHZBCTPSCFEJTWFSZMPX5IFNBUSJYPGTFNJDPOEVDUJOH grains combine to absorb and distribute transient energy IFBU TFF4QFFEPG3FTQPOTF 5IJTESBNBUJDBMMZSFEVDFT QFBLUFNQFSBUVSFUIFSNBMTUSFTTFTBOEFOIBODFTEFWJDF reliability. As a measure of the device capability in energy and peak current handling, the V26MLA1206 part was tested with NVMUJQMFQVMTFTBUJUTQFBLDVSSFOUSBUJOH " s). At the end of the test,10,000 pulses later, the device voltage characteristics are still well within specification. 3FQFUJUJWF1VMTF$BQBCJMJUZ Multilayer Internal Construction 100 METAL ELECTRODES PEAK CURRENT = 150A 8/20 s DURATION, 30s BETWEEN PULSES V26MLA1206 VOLTAGE FIRED CERAMIC DIELECTRIC METAL END TERMINATION DEPLETION REGION 10 0 DEPLETION Figure 11 REGION Figure 10 2000 4000 6000 8000 10000 12000 NUMBER OF PULSES GRAINS (c)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. MLA Automotive Varistor Series Revision: December 16, 2010 MLA Auto Series 10 -60 VNOM VALUE AT 25 oC (%) SUPPRESSOR VOLTAGE IN PERCENT OF 100% Varistor Products Surface Mount Multilayer Varistors (MLVs) > MLA Automotive Series Lead (Pb) Soldering Recommendations 5IFQSJODJQBMUFDIOJRVFTVTFEGPSUIFTPMEFSJOHPG DPNQPOFOUTJOTVSGBDFNPVOUUFDIOPMPHZBSF*33FnPX and Wave soldering. Typical profiles are shown on the right. Reflow Solder Profile 250 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 Automotive Series chip is not subjected to a thermal gradient steeper than 4 degrees QFSTFDPOEUIFJEFBMHSBEJFOUCFJOHEFHSFFTQFSTFDPOE During the soldering process, preheating to within 100 degrees of the solder's peak temperature is essential to minimize thermal shock. MAXIMUM TEMPERATURE 230C 200 TEMPERATURE C The recommended solder for the MLA Automotive Series TVQQSFTTPSJTB 4O1C"H 4O1C PS 4O1C -JUUFMGVTFBMTPSFDPNNFOETBO3."TPMEFSnVY 40-80 SECONDS ABOVE 183C 150 RAMP RATE <2C/s 100 PREHEAT DWELL 50 PREHEAT ZONE 0 Figure 12 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 TIME (MINUTES) Wave Solder Profile 300 MAXIMUM WAVE 260C 250 TEMPERATURE C 0ODFUIFTPMEFSJOHQSPDFTTIBTCFFODPNQMFUFE JUJT still necessary to ensure that any further thermal shocks BSFBWPJEFE0OFQPTTJCMFDBVTFPGUIFSNBMTIPDLJTIPU 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 UPMFTTUIBO$CFGPSFDMFBOJOH 200 150 SECOND PREHEAT 100 FIRST PREHEAT 50 0 0.0 0.5 1.0 1.5 Figure 13 2.0 2.5 3.0 TIME (MINUTES) 3.5 4.0 4.5 Lead-free (Pb-free) Soldering Recommendations -JUUFMGVTFPGGFSTUIF/JDLFM#BSSJFS5FSNJOBUJPOPQUJPO TFF /TVGmYJO1BSU/VNCFSJOH4ZTUFNGPSPSEFSJOH GPSUIF optimum Lead-free solder performance, consisting of a .BUUF5JOPVUFSTVSGBDFQMBUFEPO/JDLFMVOEFSMBZFS QMBUFE on Silver base metal. Lead-free Re-flow Solder Profile 300 MAXIMUM TEMPERATURE 260C, TIME WITHIN 5C OF PEAK 20 SECONDS MAXIMUM 5IFSFnPXQSPmMFNVTUCFDPOTUSBJOFECZUIFNBYJNVNT JOUIF-FBEoGSFF3FnPX1SPmMF'PS-FBEoGSFFXBWF TPMEFSJOH UIF8BWF4PMEFS1SPmMFTUJMMBQQMJFT /PUFUIF-FBEoGSFFQBTUF nVYBOEQSPmMFXFSFVTFEGPS evaluation purposes by Littelfuse, based upon industry standards and practices. There are multiple choices of all UISFFBWBJMBCMF JUJTBEWJTFEUIBUUIFDVTUPNFSFYQMPSFTUIF optimum combination for their process as processes vary considerably from site to site. TEMPERATURE C 250 5IFQSFGFSSFETPMEFSJT 4O"H$V XJUIBO3." nVY CVUUIFSFJTBXJEFTFMFDUJPOPGQBTUFTBOEnVYFT BWBJMBCMFXJUIXIJDIUIF/JDLFM#BSSJFSQBSUTTIPVMECF compatible. RAMP RATE <3C/s 200 60 - 150 SEC > 217C 150 100 PREHEAT ZONE 50 0 0 Figure 14 MLA Automotive Varistor Series Revision: December 16, 2010 1.0 2.0 3.0 4.0 5.0 6.0 7.0 TIME (MINUTES) (c)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. Varistor Products Surface Mount Multilayer Varistors (MLVs) > MLA Automotive Series Product Dimensions (mm) 1"%-":065%*.&/4*0/4 $)*1-":065%*.&/4*0/4 C E B NOTE D L W A /05&"WPJENFUBMSVOTJOUIJTBSFB QBSUTOPUSFDPNNFOEFEGPSVTFJOBQQMJDBUJPOTVTJOH 4JMWFS "H FQPYZQBTUF 1206 Size IN MM IN MM A 0.160 B 0.100 4.06 0.160 C 0.040 1.02 0.040 0805 Size 0603 Size IN MM IN MM 4.06 0.120 0.100 1.02 0.040 1.02 D NBY 1.10 0.040 1.00 E 0.020 0.020 0.010 0.4 L 2.01 1.6 W 0.100 0.060 1.60 0.049 MLA Auto Series 1210 Size Dimension Part Numbering System V 18 MLA 1206 X X X AUTO AUTOMOTIVE SERIES DEVICE FAMILY Littelfuse TVSS Device PACKING OPTIONS (see Packaging table for quantities) H: 7in (178mm) Diameter Reel, Plastic Carrier Tape MAXIMUM DC WORKING VOLTAGE MULTILAYER SERIES DESIGNATOR DEVICE SIZE: 0603 = .063 inch x .031 inch (1.6 mm x 0.8 mm) 0805 = .08 inch x .08 inch (2.0 mm x 1.25 mm) 1206 = .126 inch x .063 inch (3.2 mm x 1.6 mm) 1210 = .126 inch x .1 inch (3.2 mm x 2.5 mm) END TERMINATION INDICATOR N: Nickel Barrier (Matte Tin outer surface, plated on Nickel underlayer plated on silver base metal) CAPACITANCE OPTION No Letter: Standard L: Low Capacitance Version Packaging* Quantity Device Size 7" Inch Reel ("H" Option) 1210 1206 2,000 1BDLBHJOH *UJTSFDPNNFOEFEUIBUQBSUTCFLFQUJOUIFTFBMFECBHQSPWJEFEBOEUIBUQBSUTCFVTFEBTTPPOBTQPTTJCMFXIFOSFNPWFEGSPNCBHT (c)2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/ML.html or MLA.html for current information. MLA Automotive Varistor Series Revision: December 16, 2010 Varistor Products Surface Mount Multilayer Varistors (MLVs) > MLA Automotive Series Tape and Reel Specifications D0 PRODUCT IDENTIFYING LABEL P0 For T and H Pack Options: PLASTIC CARRIER TAPE For R Pack Options: EMBOSSED PAPER CARRIER TAPE P2 E F K0 W B0 t1 D1 P1 Symbol EMBOSSMENT TOP TAPE A0 8mm NOMINAL 178mm OR 330mm DIA. REEL Dimensions in Millimeters Description 0603, 0805, 1206 & 1210 Sizes A0 Width of Cavity %FQFOEFOUPO$IJQ4J[FUP.JOJNJ[F3PUBUJPO B0 Length of Cavity %FQFOEFOUPO$IJQ4J[FUP.JOJNJ[F3PUBUJPO %FQFOEFOUPO$IJQ4J[FUP.JOJNJ[F3PUBUJPO K0 Depth of Cavity W Width of Tape F %JTUBODF#FUXFFO%SJWF)PMF$FOUFSTBOE$BWJUZ$FOUFST E %JTUBODF#FUXFFO%SJWF)PMF$FOUFSTBOE5BQF&EHF P1 %JTUBODF#FUXFFO$BWJUZ$FOUFST P2 "YJBM%SJWF%JTUBODF#FUXFFO%SJWF)PMF$FOUFST$BWJUZ$FOUFST P0 "YJBM%SJWF%JTUBODF#FUXFFO%SJWF)PMF$FOUFST D0 %SJWF)PMF%JBNFUFS D1 %JBNFUFSPG$BWJUZ1JFSDJOH T1 Top Tape Thickness .BY /05&4 t$POGPSNTUP&*" 3FWJTJPO" t$BOCFTVQQMJFEUP*&$QVCMJDBUJPO MLA Automotive Varistor Series Revision: December 16, 2010 (c)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.