MULTILAYER CHIP VARISTORS

Transcription

1 MUIAYER MARUA GENERA CAAOG he multilayer chip varistor is a nonlinear resistive element containing zinc oxide (ZnO) as a main ingredient, which is newly developed for protection against surge voltage, noise, and other abnormal voltages. Unlike conventional varistors, the maximum peak current and nonlinear coefficient are very large, and the resistance is very high under a certain critical voltage, hardly allowing the current to flow. hen the critical voltage is exceeded, the resistance drops abruptly, allowing a large current to flow. Such properties cause a dramatic effect as a protective element for electric and electronic equipment, absorbing abnormal voltages and lightning surge. Features and Applications (Pages) Features Applications CV (P) Multilayer chip ceramic varistor for ESD protection for highspeed signals. For surface mounting. ESD protection for USB and other high-speed signal lines. he low capacitance will not cause signal waveform damping Also for protection of high-speed data lines and high-frequency even during use in high-speed data line. applications from electrostatic surge. Highly reliable termination with Ni+Sn barrier ensures excellent solderability. CVS (P3) CVG (P4P) Multilayer chip varistors for ESD protection requirements. Compact and high maximum peak current. his varistor is quick response to pulses,applied to electrostatic surge due to low ESR. Highly reliable termination with Ni+Sn barrier ensure excellent solderability. General-purpose multilayer chip varistors for surface mounting. Compact and high maximum peak current. arge voltage nonlinear coefficient and low clamping voltage. Quick response to pulses. It is the best for ESD protection in electric devices,such as a notebook PC and a mobile phone. Protection of various semiconductor elements from overvoltage. Protection of various semiconductor elements from overvoltage. Protection of various types of equipment from inductive lightning surge. Absorption of switching surge and electrostatic surge for relays, horns, and motors. CVA (P) High maximum energy type multilayer chip varistors for surface mounting. Use in VDC automobile circuits. Applicable to JASO transient voltage test (ype A, A-) (Size 90). Protection of various semiconductor elements from overvoltage. Absorption of switching surge and electrostatic surge for relays, horns, and motors. Protection of electronic equipment for automobiles from induced lightning surge. CVH (P) Across-the-line multilayer chip varistors for surface mounting. Development of high-voltage varistor composition allows application to AC00Vrms and AC0Vrms power circuits, which has not been materialized by conventional multi layer chip varistors hitherto. Protection of various semiconductor elements from overvoltage. Protection of various types of equipment from inductive lightning surge. Absorption of switching surge and electrostatic surge for relays, horns, and motors. Equivalent Circuit Example of electrostatic absorption waveform Human model EVE4 (kv) Electrostatic contact discharge waveform (without response element) Zener diode CVS0A00M-P Absorption voltage (V)0 0 0 Absorption voltage (V) Absorption voltage (V) ime (ns) ime (ns) ime (ns)

2 MARUA GENERA CAAOG MUIAYER [ CV ] he capacitance of multiplayer chip varistors, CV series, is low enough to minimize the deterioration of signal waveforms even if they are put in high-speed data lines. hey are ideal for protection from static electricity of high-speed signal lines of AV equipment, etc. Features he low capacitance permits the use for protection of USB and other high-speed signal lines from static electricity. Conforming to the ESD test standard, IEC EVE4 (kv) Highly reliable termination with Ni+Sn barrier. ead-free Applications Protection of cellular phones, laptops, and other portable electronic equipment from electrostatic surge. Protection of high-speed signal lines of AV equipment, etc. from electrostatic surge. Part Number System CV 0 C 0 M 0 Ð (B) P C : ow capacitance Varistor voltage 0 : V M:% 0 : 3pF :aping B : Bulk ermination P :Ni/Sn barrier Dimensions ype CV0 EIA Symbol Min 0. CV Part Number ist Specifications rating Reference value of capacitance allowable voltage ESD surge VmA AC.(Vrms) DC.(V) IEC00-4-(kV)contact discharge (V) (pf) CV0CM00 0 CV0C0M0 0 3 CV0C0M 0 CV0CM00 0 CV0C0M0 0 3 CV0C0M 0 Application Examples of CV CV CM00 CV C0M0 CV C0M pf 3pF pf Example of application ransmission method DVI HDMI IEEE4 VDS Ethernet USB ransmission speed.gbps.gbps 00Mbps.Gbps 0M,00Mbps 40Mbps Insertion oss Characteristics Insertion loss characteristics 0 0 CV0CM00 CV0C0M0 CV0C0M Frequency

3 MUIAYER [ CVS ] MARUA GENERA CAAOG he multilayer chip varistor,cvs series,has a high maximum peak current with small size. It is the best for ESD protection in electronic devices, such as a notebook PC and a mobile phone. Features his varistor contains Zinc Oxide as a main ingredient, and is available to be applied to high-speed signal line due to low capacitance. his varistor has quick response to pulses, and is best for protection against electrostatic surge due to low ESR. Highly reliable termination with Ni+Sn barrier. ead-free Applications Protection of various electric and electronic devices (mobile electronic devices, AV devices) from electrostatic surge. Operating temperature range : Ð C~+ C Part Number System CVS 0 A (B) M Ð P A : High capacitance Varistor voltage : V M:% :aping B : Bulk ermination P :Ni/Sn barrier Dimensions ype CVS0 EIA Symbol Min 0. CVS CVS Part Number ist Specifications CVS0A00M CVS0AM CVS0A0M CVS0A00M CVS0AM CVS0A0M CVS0A0M CVS0A0M CVS0A0M CVSAM CVSA0M CVSA0M CVSA0M CVSA0M rating allowable voltage peak current AC.(Vrms) DC.(V) / s(a) energy clamping voltage VmA (J) (A) (V) (V) (pf) Dimensions and electric characteristics other than described are available by request. Please contact our sales department for details. 3

4 MARUA GENERA CAAOG MUIAYER [ CVGA A ] he multilayer chip varistor, CVG, is a surge absorbing ceramic varistor developed for high-density surface mounting. he compact varistor has a multilayer structure for high maximum peak current. Features Very large maximum peak current in compact sizes. he zinc oxide material ensures high reliability with excellent nonlinearity and response. It is possible to supply in embossed taping best for automatic mounting. Applications Protection of various semiconductor elements from overvoltage. Protection of various types of equipment from inductive lightning surge. Absorption of switching surge and electrostatic surge for relays, horns, and motors. Operating temperature range : Ð C~+ C Part Number System CVG A (B) M Ð A : High capacitance Varistor voltage : V M:% :aping B:Bulk ermination :Ag Dimensions ype CVGA EIA Symbol ~0:.00. 4~: Ð0. CVGA ~0:.00. 4~: Ð0. changes according to the varistor voltage. Part Number ist Specifications CVGAM CVGA0M CVGA0M CVGA0M CVGA0M CVGA0M CVGA4M CVGAM CVGAM CVGA0M CVGA0M CVGA0M CVGA0M CVGA0M CVGA4M CVGAM rating allowable voltage peak current AC.(Vrms) DC.(V) / s(a) energy clamping voltage VmA (J) (A) (V) (V) Dimensions and electric characteristics other than described are available by request. Please contact our sales department for details. 4 4 (pf),, ,3,4,9,,3,

5 MUI AYER [ CVGB B ] MARUA GENERA CAAOG he multilayer chip varistor, CVG are surge absorbing ceramic varistors developed for high-density surface mounting. he compact varistor has a multilayer structure for high maximum peak current. Features Very large maximum peak current in compact sizes. he zinc oxide material ensures high reliability with excellent nonlinearity and response. It is possible to supply in embossed taping best for automatic mounting. Applications Protection of various semiconductor elements from overvoltage. Protection of various types of equipment from inductive lightning surge. Absorption of switching surge and electrostatic surge for relays, horns, and motors. Operating temperature range : Ð C~+ C Part Number System CVG B (B) M Ð B : ow capacitance Voltage : V M:% :aping B:Bulk ermination :Ag Dimensions ype CVGB EIA Symbol ~0: ~:.0. Ð0. CVGB ~0:.00. 4~: Ð0. changes according to the varistor voltage. Part Number ist Specifications CVGBM CVGB0M CVGB0M CVGB0M CVGB0M CVGB0M CVGB4M CVGBM CVGBM CVGB0M CVGB0M CVGB0M CVGB0M CVGB0M CVGB4M CVGBM rating allowable voltage peak current AC.(Vrms) DC.(V) / s(a) energy clamping voltage VmA (J) (A) (V) (V) Dimensions and electric characteristics other than described are available by request. Please contact our sales department for details. 4 4 (pf) 43 34,3,

6 MARUA GENERA CAAOG MUIAYER [ CVA ] he multilayer chip varistor, CVA are ceramic varistors for high-density surface mounting suitable for VDC automobile circuits. Features High maximum energy type he zinc oxide material ensures high reliability with excellent nonlinearity and response. Applicable to JASO transient voltage test (ype A, A-) (Size 90) JASO "General Rules for Environmental est of Automobile Electronic Equipment" Compact and available to be surface mounted. Applications Protection of electronic equipment for automobiles from inductive lightning surge. Protection of various semiconductor elements from overvoltage. Protection of various types of equipment from inductive lightning surge. Absorption of switching surge and electrostatic surge for relays, horns, and motors. Operating tempereture range : C~+C Part Number System CVA A 0 M Ð (B) (R) A : High capacitance Varistor voltage 0 : V M:% :aping B:Bulk ermination :Ag R : Ag/Pd Dimensions ype EIA Symbol Max. CVA CVA CVA CVA CVA Part Number ist Specifications CVAA0M CVAA0M CVAA0M CVA0A0M CVA90A0M allowable voltage AC.(Vrms) DC.(V) rating Short-time applied clamping voltage peak current energy voltage min. VmA / s (A) One time (J) (VDC) (A) (V) (V) ,

7 MUIAYER [ CVH ] MARUA GENERA CAAOG Development of high-voltage varistor composition allows application to AC00Vrms and AC0Vrms power circuits, which has not been materialized by conventional multilayer chip varistors hitherto. Features Applicable to AC00Vrms and AC0Vrms power lines. Applicable to high voltage (varistor voltage: 4 V max.). he zinc oxide material ensures high reliability with excellent nonlinearity and response. Compact and available to be surface mounted. Applications Protection of various semiconductor elements from overvoltage. Protection of various types of equipment from inductive lightning surge. Absorption of switching surge and electrostatic surge for relays, horns, and motors. Operating temperature range : Ð C~+ C Part Number System CVH A (B) K Ð R A : High capacitance Varistor voltage : 0V K:0% :aping B:Bulk ermination R : Ag/Pd Dimensions ype CVH EIA Symbol Max CVH ~:3. ~: changes according to the varistor voltage. Part Number ist Specifications CVHAK CVHAK CVHAK CVHAK CVHAK CVHAK CVH0AK CVH0AK CVH0AK CVH0AK CVH0AK CVH0AK CVH0AK CVH0A4K rating clamping voltage allowable voltage peak current energy VmA AC.(Vrms) DC.(V) / s (A) One time (J) (A) (V) (V)

8 MARUA GENERA CAAOG PERFORMANCE AND ES MEHOD Characteristics Specifications est Method and Conditions Standard est Condition allowable Voltage Short-time applied voltage (Applicable to CVA ) o meet the specified value. C,% RH in principle. If results obtained are doubted, a further test should be carried out at C, % RH. he voltage between two terminals with direct current ma applied is called varistor voltage. he measurement shall be made as fast as possible to avoid heat affection. he maximum voltage that can be applied continuously indicating maximum DC voltage and RMS value of ~ Hz AC. he maximum value of DC voltage that can be applied for a short period of time. ( minutes) Clamping Voltage he maximum voltage between two terminals with the specified standard shock-wave current waveform (/ s) applied. energy he maximum energy when the specified impulse energy current is applied time without damage to the varistor. peak current he maximum current when a standard shock-wave current waveform(/s) is applied time without damage to the varistor. Adhesion strength of termination Resistance to Flexure of Substrate Vibration resistance Visual Reference value No peeling-off or exfoliation shall be manifest or recognizable in its incipient stages. No mechanical damage. VmA0% No remarkable visible damage No peeling-off or exfoliation and no failure shall be measured with khz0%, khz Vrms. A specimen is mounted on a test substrate A by reflow soldering, and the force of N (0. kgf) is applied to the center of the sides of the sample in the horizontal direction of the substrate for 0 seconds. A specimen is mounted on a test substrate B by reflow soldering, and the center of the substrate is pressurized as the specimen side down and bent +0.mm, 0mm for seconds. A sample is mounted on a test substrate A by reflow soldering. Vibration frequency : 0~Hz Full amplitude : mm,0~ ~0Hz min. XYZ direction hrs for each total hrs. Soldering temperature : 3 C Solderability % coverage minimum Immersion time : 0.sec. ype of solder : HA or H3A Flux : Ethanol solution of rosin (%) Resistance to soldering heat Visual No mechanical damage he loss of electrode due to solder dipping shall not exceed % of the electrode edge. VmA0% Preheating : 0 C,~min. Soldering temperature : C Immersion time : 0.sec. ype of solder : HA or H3A Flux : Ethanol solution of rosin (%) Step emperature ime Visual No mechanical damage 3 C min. Room temp. min. emperature cycling Vaistor voltage VmA0% 3 + C min. 4 Room temp. min. eaving a specimen under the temperature of step ~4 above in order completes cycle. After being left at room temperature for 4 hours, the specimen is visually examined and measured varistor voltage. Humidity load test ife test at high temperature load VmA0% VmA0% est temperature : C (CVH series C) Relative Humidity : 90~9% Duration :,000 hours Applied Voltage. allowable Voltage is applied continuously. est temperature : C (CVH series C) Duration :,000 hours Applied Voltage. allowable Voltage is applied continuously. b Substrate A c a Solder resist erminal Substrate B b a c 00 ø4. d Solder resist erminal Parts dimension Substrate A Substrate B Size a b c a b c d Substrate material : Glass epoxy

9 HANDING PRECAUIONS MARUA GENERA CAAOG Mounting. Chip mounting () If the bottom dead point of the suction nozzle is too low the force on the chip may be great enough to cause breaking or cracking while mounting. Adjust the distance of the botton dead point of the nozzle from the top surface of the chip, after resetting the substrate straight, to prevent overload on the chip. Board Guide Suction nozzle Board Guide Chip Board Supporting pin Improper Proper Improper Proper Supporting pin () o prevent cracking or breaking, set the static load force between 00~0gf when mounting. (3) A worn clamp fixture of the mounter can cause an uneven distribution of the clamping force, leading to cracking or breaking of the varistor. Check the dimensions of the clamping fixture in the closed position, perform routine maintenance on the suction nozzle and clamping fixture, and inspect or change worn parts on a periodic basis.. Board breaking hen large multi-circuit boards are broken into individual boards after soldering, flexure stress may be placed on the parts causing them to cracking or breaking. For designing patterns please refer to below. Improper Proper Improper Proper Improper Proper R R arge ICs and transformers arge ICs and transformers Break line Break line Break line Soldering. Basic design Recommended land pattern c Solder resist and ype Chip ength () width () a ~ ~0..0~..~. 3...~ ~.~4. 3.~ d a and dimension b c d ~3. 0.4~0. 0.3~0..~4. 0.~0. 0.4~0. 3.0~4. 0.9~. 0.4~0. 4.~..~. 0.4~0. 4.~..~. 0.~.0.~..3~3. 0.~..~.3 ~ 0.~..~0. 4.~.3 0.~.3 b CVH : 3.0~4.. General cautions for soldering () Excessively high soldering temperatures or long soldering times can cause leaching of the terminations, and consequently decrease adherence strength or maximum peak current. 9

10 MARUA GENERA CAAOG HANDING PRECAUIONS () For soldering, please refer to the soldering curves below. he Ag and Ag/Pd terminal electrodes are not applicable to flow soldering. Use them for reflow soldering. (3) Recommended solder: Sn/Pb/Ag = /3/ or equivalent Recommended flux: Inactive rosin flux (Cl content 0.% max) Contact us for the use of Pb-free solder. Reflow soldering recommended conditions Note: isted below are recommended reflow soldering conditions for the temperature profile. () Keep the peak temperature as low as possible. () Do not keep the parts above 0 C for more than seconds. Note: Reflow soldering should be done only once. emperature ( C) Preheating Soldering Gradual cooling at room temperature 0~ C ~3min. ~0sec. more than min. 3. Cleaning hen using ultrasonic cleaning, the board may resonate if the output power is too high. Because this vibration can cause cracking or a decrease in the adherence of the termination, we recommend the conditions below. Frequency : khz Output power : /Iitter Cleaning time : minutes max. hese varistors are made of ceramic so avoid dropping or other mechanical shock that could damage the parts. Guide to application he performance of varistors may deteriorate, the inside elements may be damaged, and they cause the varistors to smoke or catch fire, if the following precautions are not observed..do not use varistors in places whose temperature exceeds their rated operating temperature due to direct sunlight or heating objects..do not use varistors in a humid place directly exposed to the weather or steam. 3.Do not use varistors in places filled with dust, salt K mist or corrosive gas. 4.Do not apply high voltage exceeding the rated maximum allowable circuit voltage to varistors. In the case of automotive jumping starters, use the varistors within short-term allowable voltage limits prescribed in the catalog. If voltage wave form is not complete DC, a maximum value of peak voltages shall not exceed the rated maximum allowable circuit voltage..do not apply peak currents exceeding the rated maximum energy..hen peak currents are repeatedly applied to varistors, do not exceed the surge life prescribed in the catalog..using varistors in circuits whose frequency exceeds khz may damage their elements by heat generation due to dielectric loss. Varistors may fly off and injure someone if the following precautions are not observed..do not use varistors in circuits to which surge currents exceeding the specified limits are applied..do not exceed the rated maximum allowable circuit voltage. he following preventive measures should be made for avoiding unexpected accident..hen using a varistor in between circuits, insert an electric leakage breaker(ground-fault circuit interrupter) or current fuse and thermal fuse in series with the varistor. Also, in case of excessive voltage due to ground short circuit accident, use the varistor with the rated voltage higher than the excessive voltage..hen using a varistor in between circuits and ground, connect an earth leakage breaker (ground-fault circuit interrupter) or both of a current fuse and thermal fuse in series with the varistor. Also, in case of excessive voltage due to ground short circuit accident, use the varistor with the rated voltage higher than the excessive voltage. Storage/keeping Deterioration of solderability can be caused by oxidization/sulfurization because of high temperature, high humidity or chlorine/sulfur gas. Parts should be used within months if possible and stored -0 C~+ C and %RH in an atmosphere free of sulfur, chlorine or toxic gasses. 0

11 PACKAGE FORM DEAIS MARUA GENERA CAAOG aping aping Specifications Conforming to JIS C 00 Paper Carrier Plastic Carrier A F E A B F E B P P P0 P P P0 Size Carrier tape A 0. B F 0.0 E 0. P 0. P 0.0 P0 0. D 0. max. max. 0 0 Paper Carrier Embossed Carrier Reel ype-size E Size 0~, 0 90 A C A B B C min 30. min 30. min 30. R D D E R Number of stored standard parts (pcs/reel) ype CVS0 CV0 CVS0 CV0 CVS ype CVG CVG (mm) (mm) Quantity 0,000 4,000 3,000 Quantity 3,000,000 3,000,000 ype CVA CVA CVA CVA0 CVA90 ype CVH CVH0 (mm) max max max 3.0max 4.max (mm) 3.max 3.max 4.max Quantity,000, Quantity 0 0 Note: he number of stored parts differs according to the rating.