AVX is a leading worldwide manufacturer and supplier of a broad line of passive electronic components and Interconnects.

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1 Niobium Oxide Capacitors VX is a leading worldwide manufacturer and supplier of a broad line of passive electronic components and Interconnects. VX enjoys significant competitive advantages including the benefit of having research, manufacturing, and customer support facilities in 15 countries around the world. This assures customers of the most efficient balance of delivery and production capability in response to their just-in-time inventory requirements. With major research and development centers in five locations around the world, VX has fostered customer relationships involving the design and technology for new and advanced products to fulfill their special end product requirements. VX research and development has anticipated and adapted products that help fuel the explosive growth in communications technology. Tantalum Capacitors/ Niobium Oxide Capacitors Guide Resin-Molded Standard General (Standard) Low Profile Low ESR ace-down TJ 92 TJ 91 TPS TPM -S1 Small Case High Voltage Small Case High Voltage Small Case High Voltage Multi anode Small Case High Capacitance used High Reliability General (High Reliability) Small Case High Capacitance Low ESR High Temperature 97 TRJ -J6 91-J6 TRM 97-HT3 THJ Small Case Multi Small Case High Voltage High Capacitance anode Small Case High Voltage Ultra Small Case High Capacitance Small Case High Capacitance High Voltage Low ESR 38 TCN TCJ TCM Small Case Low Profile -M1 (UDIO) Conformal Coated Low Profile 72 High Capacitance 75 Niobium Oxide Capacitors OxiCap General Low ESR Multianode NOJ NOS NOM TP Leaded Option

2 Niobium Oxide Capacitors Tantalum Capacitors Product Line-up Resin-Molded (Standard) TJ 92 TJ (Low Profile) 91 General General Low Profile Low Profile ppearance Type Resin-Molded Chip Resin-Molded Chip Resin-Molded Chip Resin-Molded Chip Resin-Molded Chip Operating Temperature Range ( C) 55 to to to to to +125 Voltage Range (V) 4 to to 50 4 to to 50 4 to 35 Capacitance (µ) 0.68 to to to to to 680 Tolerance (%) ±20, ±10 ±20, ±10 ±20 ±20, ±10 ±20, ±10 Leakage Current (µ) 0.01CV or 0.5 max. 0.5 to CV to 0.1CV or 0.5 max. 0.5 to CV or 0.5 max. Dissipation actor (%) 4 to 40 max. 4 to 60 max. 4 to 30 max. 4 to 30 max. 6 to 18 max. Consumer products, Industrial equipments Resin-Molded (Standard) Resin-Molded (High Reliability) TPS/ TPM / -S1 97 TRJ -J6 ace-down Terminal General General Multianode (TPM) used type (-S1) ppearance Type Resin-Molded Chip Resin-Molded Chip Resin-Molded Chip Resin-Molded Chip Resin-Molded Chip Operating Temperature Range ( C) 55 to to to to to +125 Voltage Range (V) 2.5 to to 35 () 6.3 to to 50 4 to to 35 (-S1) 0.15 to to 220 () 0.33 to to to 680 Capacitance (µ) 1 to 47 (-S1) Tolerance (%) ±20, ±10 ±20 ±20, ±10 ±20, ±10 ±20, ±10 Leakage Current (µ) 0.5 to CV to 0.2CV or 0.5 max. 0.01CV or 0.5 max. 0.3 to CV or 0.5 max. Dissipation actor (%) 4 to 60 max. 6 to 80 max. () 4 to 15 max. 4 to 30 max. 4 to 30 max. 18 to 30 max. (-S1) 0.5% / 1000 hours 0.5% / 1000 hours Consumer products, Industrial equipments utomotive products, Industrial equipments Resin-Molded (High Reliability) 91-J6 TRM 97-HT3 THJ Multianode Temperature 135 C Temperature 175 C, 200 C ppearance Type Resin-Molded Chip Resin-Molded Chip Resin-Molded Chip Resin-Molded Chip Operating Temperature Range ( C) 55 to to to to +175, +200 Voltage Range (V) 6.3 to to to to 50 Capacitance (µ) 10 to to to to 220 Tolerance (%) ±20, ±10 ±20, ±10 ±20, ±10 ±20, ±10 Leakage Current (µ) 0.01CV or 0.5 max. 1.8 to CV or 0.5 max. 0.5 to 22 Dissipation actor (%) 6 to 12 max. 6 to 8 max. 4 to 15 max. 3 to 10 max. at 95 C Rated Voltage 0.5% / 1000 hours 0.5% / 1000 hours utomotive products, Industrial equipments * This table is not intended to limit the applications. Please see each page of products for detailed specifications. 0.5% / 1000 hours

3 Niobium Oxide Capacitors Tantalum Capacitors Product Line-up 38 TCN TCJ TCM Ultra Small case Small case Ultra Low ESR High Ripple ace-down Terminal ace-down Terminal High Ripple Multianode High Ripple High Ripple ppearance Type Resin Molded Chip Resin Molded Chip Resin Molded Chip Resin Molded Chip Operating Temperature Range ( C) 55 to to to +85, +105, to +105 Voltage Range (V) 4 to to to to 100 Capacitance (µ) 2.2 to to to to 1000 Tolerance (%) ±20 ±20 ±20 ±20 Leakage Current (µ) 0.2CV or 10 max. 35 to to to 408 Dissipation actor (%) 6 to 15 max 6 to 30 max. 6 to 12 max. 8 max. Consumer products, Industrial equipments Conformal Coated -M1/ Low Profile Low ESR/ impedance, Excellent High requency Characteristics or udio Equipment (-M1) Small Rectangular Low ESR/ impedance, Excellent High requency Characteristics Low ESR/ impedance, Excellent High requency Characteristics ppearance Type Coformal Coated Chip Coformal Coated Chip Coformal Coated Chip Operating Temperature Range ( C) 55 to to to +125 Voltage Range (V) 4 to 10 (-M1) / 4 to 16 4 to 16 4 to 35 () 68 to 470 (-M1) / 33 to to 2200 Capacitance (µ) 1 to 470 () Tolerance (%) ±20, ±10 ±20, ±10 ±20, ±10 Leakage Current (µ) 0.01CV to 0.02CV or 0.5 max. 0.01CV to 0.02CV or 0.5 max. 0.01CV to 0.02CV or 0.5 max. Dissipation actor (%) 10 to 40 max. (-M1) / 6 to 45 max. 10 to 45 max. 4 to 40 max () Consumer products, Industrial equipments Niobium Oxide Capacitors OxiCap Product Line-up ppearance Niobium Oxide Capacitors OxiCap NOJ NOS/ NOM Non burn safe technology Non burn safe technology General Multianode (NOM) Type Resin-Molded Chip Resin-Molded Chip Operating Temperature Range ( C) 55 to to +125 Voltage Range (V) 1.8 to to 8 Capacitance (µ) 4.7 to to 1000 Tolerance (%) ±20 ±20 Leakage Current (µ) 1.1 to to 56.4 Dissipation actor (%) 6 to 20 max. 6 to 16 max. 0.5% / 1000 hours 0.2% / 1000 hours utomotive products, Industrial equipments, Consumer products * This table is not intended to limit the applications. Please see each page of products for detailed specifications. Compliance with RoHS Directive Compliance with Compliant RoHS Directive Leaded (Pb) Chromium(VI) Mercury Does not contain Cadmium PBB PBDE MSL * LEVEL 1 to LEVEL 3 (IPC/ JEDC J-STD-020) * If you need detailed information about MSL LEVEL, please contact us.

4 Resin-molded Chip, High Reliability 97 RoHS Compliant EC-Q200 qualified ailure rate level 0.5%/ 1000 hrs (twice better than consumer pruducts) pplications utomotive electronics (Engine ECU) Industrial equipment How to Order (Example : 16V 3.3µ) C Case Dimensions S L / B Case S H W2 W1 9 M Packaging (Refer to page packaging for details) Case size Tolerance Rated capacitance S L C/ N Case S Rated voltage H (Unit: mm) Case size L W1 W2 H S 3.2± ± ± ± ±0.2 B 3.5± ± ± ± ±0.2 C 6.0± ± ± ± ±0.2 N 7.3± ± ± ± ±0.2 Marking Rated voltage (Voltage code) Case B Case C Case C r Month code 10 16r Rated Capacitance Rated voltage (V) (Capacitance code ) W2 W1 Month code N Case 47 10r Rated Voltage (V) Rated Capacitance (µ) Specifications Item Performance Characteristics Category 55 to +125 C (Rated temperature : +85 C) Temperature Range Tolerance ±20%, ±10% (at 120Hz) Dissipation actor Refer to next page (120Hz) ESR Refer to next page (100kHz) fter 1 minute application of rated voltage,leakage current at 20 C is not more than 0.01CV or 0.5 µ, whichever is greater. fter 1 minute application of rated voltage,leakage current at Leakage Current* 85 C is not more than 0.1CV or 5 µ,whichever is greater. fter 1 minute application of derated voltage,leakage current at 125 C is not more than 0.125CV or 6.3 µ,whichever is greater. Capacitance Change by Temperature Damp Heat (Steady State) Load Humidity Temperature Cycles Resistance to Soldering Heat Solderability Surge* Endurance* Shear Test Terminal Strength +15% max. (at +125 C) +10% max. (at +85 C) 10% max. (at 55 C) t 85 C, 85% RH or 1000 hours (No voltage applied) Dissipation actor... Initial specified value or less Leakage Current % or less than the initial specified value fter 1000 hours application of rated voltage in series with a 33Ω resistor at 85 C, 85% RH capacitors meet the characteristics requirements table below. Dissipation actor...120% or less than the Initial specified value Leakage Current...200% or less than the initial specified value t 55 C / +125 C,or 30 minutes each,1000 cycles Dissipation actor...initial specified value or less Leakage Current...Initial specified value or less 10 seconds reflow at 260 C, 5 seconds immersion at 260 C. Dissipation actor...initial specified value or less Leakage Current...Initial specified value or less fter immersing capacitors completely into a solder pot at 245 C for 2 to 3 seconds,more than 3/4 of their electrode area shall remain covered with new solder. fter application of surge in series with a 33Ω resistor at the rate of 30 seconds ON, 30 seconds O,for 1000 successive test cycles at 85 C,capacitors shall meet the characteristic requirements table below. Dissipation actor...initial specified value or less Leakage Current...Initial specified value or less fter 2000 hours application of rated voltage in series with a 3Ω resistor at 85 C,or derated voltage in series with a 3Ω resistor at 125 C,capacitors shall meet the characteristic requirements table below. Dissipation actor...initial specified value or less Leakage Current...Initial specified value or less fter applying the pressure load of 17.7N for 60 seconds horizontally to the center of capacitor side body which has no electrode and has been soldered beforehand on a substrate, there shall be found neither exfoliation nor its sign at the terminal electrode. Keeping a capacitor surface-mounted on a substrate upside down and supporting the substrate at both of the opposite bottom points 45mm apart from the center of capacitor, the pressure strength is applied with a specified jig at the center of the substrate so that substrate may bend by 1mm as illustrated. Then, there shall be found no remarkable abnormality on the capacitor terminals. R N (1.8kg f) or 60 seconds s for the surge voltage and derated voltage at 125 C, refer to page precautions for details. We can supply 135 C type. Please see 97-HT3 series. 20 1mm Capacitance and Voltage Range V μ CODE 0J 1 1C 1D 1E 1V () / B () / B () / B B B B (B) / C / B / B / B (B) / C C / B B B (B) / C C (C) / N / B / B/ C (B) / C C/ N N B B / (B) / C N (C) / N / B / B B/ C/ N C/ N N / C B/ C/ N B/ C/ N (N) B/ C B/ C/ N C/ N N N N C/ (N) C ( ) The series in parentheses are being developed. Please contact us when these series are being designed in your application.

5 Resin-molded Chip, High Reliability 97 Standard Ratings Rated Voltage 6.3V 10V 16V Leakage Disspation Cap Case ESR *1 Part Number Current actor ΔC/C (μ) size (μ) (%) J335M * J475M * J685M * 6.8 B 970J685MB * 15 B 970J156MB * J226M * 22 B 970J226MB * J336M * 33 C 970J336MCC * 47 B 970J476MB * 47 C 970J476MCC * 68 N 970J686MNC * 100 N 970J107MNC * 150 C 970J157MCC * M * M * M * 4.7 B MB * 6.8 B MB * M * 10 B MB * 15 B MB * M * 22 B MB * 33 B MB * 33 C MCC * 33 N MNC * 47 B MB * 47 C MCC * 47 N MNC * 68 N MNC * 100 C MCC * 1 971C105M * C155M * C225M * C335M * C475M * 4.7 B 971C475MB * 6.8 B 971C685MB * C106M * 10 B 971C106MB * 10 C 971C106MCC * C156M ±10 15 C 971C156MCC * 22 B 971C226MB * 22 C 971C226MCC * 22 N 971C226MNC * 33 B 971C336MB * 33 C 971C336MCC * 33 N 971C336MNC * 47 C 971C476MCC * 47 N 971C476MNC * Leakage Disspation Rated Cap Case ESR *1 Part Number Current actor ΔC/C Voltage (μ) size (Ω@100kHz) (μ) (%@120Hz) (%) D684M * 1 971D105M * D155M * D225M * 3.3 B 971D335MB * 20V D475M * 4.7 B 971D475MB * 6.8 C 971D685MCC * 10 C 971D106MCC * 15 N 971D156MNC * 22 C 971D226MCC * 22 N 971D226MNC * E684M * 1 971E105M * 2.2 B 971E225MB * 3.3 B 971E335MB * 25V 4.7 C 971E475MCC * 6.8 C 971E685MCC * 10 C 971E106MCC * 10 N 971E106MNC * 15 N 971E156MNC * 22 N 971E226MNC * V334M * V474M * V684M * 1 B 971V105MB * 35V 1.5 B 971V155MB * 2.2 B 971V225MB * 3.3 C 971V335MCC * 4.7 C 971V475MCC * 6.8 N 971V685MNC * 10 N 971V106MNC * In case of capacitance tolerance ±10% type, K will be put at 9th digit of type numbering system. * 1:ΔC/C Marked "*" Item / B/ C/ N Case (%) Damp Heat ±10 Tempereature cycles ±5 Resistance soldering heat ±5 Surge ±5 Endurance ±10 Load Humidity ±10

6 Tantalum Capacitor Packaging Part Number Carrier Tape Dimensions (Unit: mm) M G M Rated capacitance Rated voltage Tolerance Case size Q 2 series have single-side electrode structures as illustrated below, code "Q2" is added at the end of each type number to distinguish from other case sizes. Their electrode area at the cover tape side becomes lessened, accordingly 91/ 92/ / 97/ M/ 38 M 4.0± ±0.1 t3 2.0±0.05 B W Tape Width (mm) 8 R Polarity node is at opposite side of feeding holes. Packaging pplicable case size 91/ 92/ Reel Dia Reel Dia / 97/ 72/ 75 φ180mm φ330mm / 38 E U/ M/ S/ P/ / B R/ P/ Q/ S/ / T/ B t2 U/ 38 U t2 4.0±0.1 P1 1.75± R node is at opposite side of feeding holes. C G C/ N U/ C/ D R/ M B W Reel Dimensions (Unit: mm) S/ 38 S t3 P1 4.0± ± ±0.1 2±0.5 13± min. W B W2 t2 P1 Note: The above shows the dimensions of φ180 reel. In case of φ330 reel, the appearance shape is slightly different. Item Reel Diameter Tape width Item φ180 φ φ φ330±2 W1 9.0±0.3 13±0.3 W2 11.4± ±1.0 Taping Case size Q ty (pcs./ reel) Reel Dia. φ180 Reel Dia. φ330 U M 4000 S 92 P / B B C/ N R/ P Q/ S/ / T B R 1000 M U/ C/ D/ R 500 Note: shall be replaced as necessary. Replaced Replaced J6 97-HT3 -J6 -M1 -S1 W1 Case size W B P1 t2 t3 U 0.73± ± ± max. 3.5±0.05 M 0.97± ± max. 0.20±0.05 S 1.35± ± ± max. 8.0±0.3 P 1.55± ± ±0.1 (1.7 max.) 1.9± ± ± max. (1.7) 0.2 to 0.3 B 3.3± ± max. (1.7) C 3.6± ± max. 12.0± ± ±0.1 N 4.8± ± max. / 72/ to 0.3 t2 B igures in ( ) at t2 are applicable to 92 series P1 4.0± ± ±0.1 Case size W B P1 t2 R 1.05 max. 1.5± ±0.2 P 1.5 max. Q/ S 2.0± ± max. 8.0± ± ± ± ± max. T 3.0± ± max. B 3.25± ± max. 72 R 6.5± ± max. M 6.6± ± max. U 2.7 max. 12.0± ± ± ± ±0.1 C 3.6 max. 75 D 4.8± ± max. R 6.7± ± max. W

7 + Tantalum Capacitors Precautions The schematics, graphs and numerical values that appear in our catalog are a representative sampling of typical usage. These will differ due to series, ratings and lot variation. Therefore, please contact us to confirm the specific characteristics. Note: shall be replaced as necessary. Replaced Replaced J6 97-HT3 -J6 -M1 -S1 1. Circuit Design (1) Rated Voltage and Operating Voltage s shown in ig.1, rated voltage signifies the maximum peak voltage applied to the capacitor at the maximum rated temperature. The rated voltage consists of the sum of both DC voltage and ripple peak voltage. It is recommended that capacitors are used at a voltage less than the rated voltage. (Reduced rated voltage should be applied at the temperature higher than 85 C) ig. 1 Voltage (V) Ripple Voltage Rated Voltage Operating Voltage DC Voltage Time (sec.) It is also recommended to properly derate the voltage to improve operating reliability. ig.2 is commonly used to consider the derated voltage. ig. 2 Coefficient of Recommendable Operating Voltage mbient Temperature ( ο C) 197-HT3 series (135 type) 2Other series (except 38 series) (2) Low Impedance Circuit In low impedance circuit applications such as power supply circuits, the failure rate may increase due to inrush current. dditionally, if a short occurs within the capacitor, burning may possibly occur. Therefore, sufficient voltage derating (less than 1/2 of rated voltage) is recommended. If you need assistance, please contact us. ig. 3 ~ ilter Power supply circuit Low impedance circuit By-pass IC (3) Regarding the applied voltage of conductive polymer tantalum 38 series, we recommend the applied voltage shown in following table. Recommended operating voltage (Rated voltage ratio) Type LZT/ 38-XE Rated voltage 6.3V 10V 6.3V Use in High Impedance circuit Less than 90% Less than 80% Less than 70% Use in Low Impedance circuit Less than 90% Less than 80% Less than 70% (4) Operating Temperature ll parts must be used within the specified category temperature range, since, the temperature has a great effect on reliability. Therefore, when using capacitors, please try to keep the temperature as low as possible. Please take into consideration that the capacitor itself generates heat which affects the atmospheric temperature.

8 Precautions (5) Ripple Capability The ripple capability of solid tantalum electrolytic capacitors is defined by both Equivalent Resistance (ESR) and power dissipation due to ripple current. If the capacitor sees a higher ripple current than specified amount, heat generation within the capacitor will increase eventually causing a failure. The capacitors should be used at a voltage less than the rated voltage that consists of the sum of both DC voltage and ripple peak voltage. lso, reverse voltage due to variation of ripple peak voltage should not be applied to the capacitor. If you need detailed information about permissible ripple voltage and permissible ripple current, please contact us. (6)Reverse Voltage Solid tantalum electrolytic capacitors are polarized, and therefore, no reverse voltage is acceptable. (Electrical characteristics shall be deteriorated when reverse voltage is applied.) When checking a part using a tester, please make sure the polarity of the tester before the probes touch both capacitor terminals. (7) Leakage current value differs depending on the voltage applied. Please use higher ratings, especially when it is used in the integration circuit or time-constant circuit. (8) Low voltage application or high resistance connected to the capacitor in series, a problem could possibly result if the following application exists: Low voltage, high resistance conncected to the capacitor in series, and a circuit is sensitive to leakage current, a problem could occur due to the lower recovery of the leakage current characteristic of tantalum capacitor, caused by heat stress during the soldering process. (9) Cautions on designing When tantalum capacitor is used at high frequency circuit, please note that the electrical characteristics may change drastically. 2. Mounting (1) Recommended mounting pad dimensions for chip type are as shown in Table 1 and Table 2. Dimensions may vary depending upon reflow conditions, type of solder and/or board size. ig. 4 c Center of nozzle [Cautions when mounting 72, 75, and chip] djustment of ΔC toward anode side is required when mounting, as there is a difference between the center of total length of anode tab ( 凸 portion) and the center of board land dimension. - + a b c b Table-1 Resin - molded chip Type Case 91/ 92/ / 97/ / 38 a b b c U M S P B C N Table-2 Conformal - coated chip Type Case a b b c Δc R/ P Q/ S T B In the case of / 72/ 75 chip mounting, make the centering with the dimensions except anode tab ( 凸 portion) length. Table-3 Conformal - coated chip 72/ 75 Type a b b c Δc 72 R/ M U/ C D R (2) Soldering temperature and soldering time for chip type should be within limits as shown below when measured at terminal surface. In case you repeat soldering process more than 1 time, please contact us for advice. Board size, distribution of reflow temperature and capacitor position on the circuit board will influence to reflow conditions. Please check actual reflow condition before applying condition shown in ig. 5. In case you repeat soldering process more than 1 time, please contact us for advice. 72, 75, 91, 92,,, 97, Reflow (Infrared Ray, Hot Plate, Hot ir, etc.) ig. 5 Temp. ( o C) Pre-heat Pre-heat Reflow 72,75,91,92,,97, Reflow Time (Sec.) low (Dipping, Wave Soldering, etc.) ig. 6 Pre-heat Soldering Temp. ( o C) (Pre-heat is subject to Reflow. ) Time (Sec.) 72, 75, 91, 92,, 97, Vapor Phase Soldering 30 sec. max. at 215 C (Pre-heat is subject to Reflow.) : 72, 75, 91, 92,,, 97,

9 Precautions 38 Reflow (Infrared Ray, Hot Plate, Hot ir, etc.) ig. 7 3 C/ sec max. 5sec max. 260 C 6 C/ sec max. 200 C 217 C Temp. ( o C) 150 C 180sec max. 90sec max. Time (Sec.) ll series Soldering-iron (30 watts or less) ig , 75, 91, 92,,, 97,, 38 Temp. ( o C) Time (Sec.) NOTE : Preheat is required to reduce heat shock regardless of the method of soldering. Preheat time for 72, 75, and series should be as long as possible. (3)Cleaning Please wash PC board as soon as possible after soldering process to eliminate flux, and acid and alkaline material. In case of ultrasonic cleaning, attention should be paid to the following: 1Cleaning condition : requency=25 to 40kHz, Power =10 to 20W/ l, Time = within 3 minutes. 2Do not allow a circuit board to touch the agitator. 3 Do not stack circuit boards in the cleaning bath. 3. Notes on Storage It is desirable to store capacitors at normal temperatures 35 C Max. and normal humidity. Keep out of direct sunlight. Don t apply force to capacitor body, especially terminal. Don t apply shock and vibration by dropping etc. or moisture-proof packed products, keep in sealed storage bag. Unseal the storage bag just before mounting and be conscious to use up the capacitors. If some capacitors remained, return the capacitors with desiccant into the storage bag and seal the unsealed part. Once the storage bag is opened, store the capacitors in the ambient conditions and time shown in the below table. MSL Time Condition hours 30 C/ 60%RH Compliant to IPC/ JEDEC J-STD-020D It is preferable to store for no more than 1 year under the above condition. (when you use part that has been stored more than 1 year, please contact as for assistance) 4. Disposal of capacitors When disposing, scrap it as industrial wastes. 5. Others 1This product has been designed and manufactured for general electronic equipment. If you use them on extremely high quality or safety electronic equipment such as Medical equipment, erospace equipment, etc., please contact us for conformity specifications. 2The above mentioned material is according to EIJ RCR-2368B (revised in March 2002, titled Guideline of notabilia for fixed tantalum electrolytic capacitors with solid electrolyte for use in electronic equipment ). Please refer to this book for details. 3Please refer to VX individual technical material for further information of 2 and contents in this catalog. The corelations among rated voltage, surge voltage and derated voltage are as shown. 72/ 75/ 91/ 92/ / / 97/ 92-LZT/ -LZT/ -XE 38 Rated voltage (V) [ 85 C * ] Rated voltage (V) [ 60 C] Rated voltage (V) [ 85 C] C * Surge voltage (V) C Derated voltage (V) C Surge voltage (V) C * Derated voltage (V) C Derated voltage (V) C Derated voltage (V) 5 8 * In case of 97-HT3, 85 C and 125 C shall be 95 C and 135 C respectively. 38-LZT/ 38-XE Rated voltage (V) [ 60 C] C Surge voltage (V) 8 85 C Derated voltage (V) C Derated voltage (V) 2 3.3