AYF33 For FPC FPC connectors (0.3mm pitch) Back lock Y3B/Y3BW Series FEATURES New Y3BW is added. 1. Slim and low profile design (Pitch: 0.3 mm) Back lock type and the slim body with a 3.15 mm depth (with the lever). 0.9 Y3B 7. Y3BW features advanced functionality, including a structure to temporarily hold the FPC and a higher holding force. The FPC holding contacts located on both ends of the connector facilitate positioning of FPC and further enhance the FPC holding force. Structure to lock notches on both ends of the FPC with holding contacts 5 3.1 Unit: mm Y3BW 2. Mechanical design freedom is achieved with double top and bottom contacts Top and bottom double contacts eliminate the need of using different connectors (with either top or bottom contacts) depending on the FPC wiring conditions. 3. Easy-to-handle back lock structure 4. Man-hours of assembly time can be reduced by delivering the connectors with their levers opened. 5. Wiring patterns can be placed underneath the connector. 6. Ni barrier with high resistance to solder creepage RoHS compliant Applicable FPC shapes (1) The inserted FPC can be temporarily held until the lever is closed. (2) When the lever is closed, the holding contacts lock the FPC by its notches, enhancing the FPC holding force. APPLICATIONS Mobile devices, such as cellular phones, smartphones, digital still cameras and digital video cameras. ORDERING INFORMATION AYF 3 3 5 33: FPC Connector 0.3 mm pitch (Back lock) Number of pins (2 digits) Contact direction 3: Top and bottom double contacts (Y3B) 6: Top and bottom double contacts, lock holding type (Y3BW) Surface treatment (Contact portion / Terminal portion) 5: Au plating/Au plating (Ni barrier) ACCTB47E 201303-T Panasonic Corporation Automation Controls Business Division industrial.panasonic.com/ac/e/ AYF33 PRODUCT TYPES Y3B Height Number of pins Part number 0.9 mm 7 8 9 11 13 15 17 21 23 25 27 31 33 35 37 39 45 51 61 AYF330735 AYF330835 AYF330935 AYF331135 AYF331335 AYF331535 AYF331735 AYF332135 AYF332335 AYF332535 AYF332735 AYF333135 AYF333335 AYF333535 AYF333735 AYF333935 AYF334535 AYF335135 AYF336135 Height Number of pins Part number 0.9 mm 11 25 51 AYF331165 AYF332565 AYF335165 Packing Inner carton Outer carton 5,000 pieces 10,000 pieces Y3BW Packing Inner carton (1-reel) Outer carton 5,000 pieces 10,000 pieces Notes: 1. Order unit; For volume production: 1-inner carton (1-reel) units. Samples for mounting check: 50-connector units. Please contact our sales office. Samples: Small lot orders are possible. Please contact our sales office. 2. Please contact our sales office for connectors having a number of pins other than those listed above. SPECIFICATIONS 1. Characteristics Electrical characteristics Item Rated current Rated voltage Insulation resistance Specifications 0.2A/pin contact 50V AC/DC Min. 1,000MΩ (initial) Breakdown voltage 150V AC for 1 min. Contact resistance Mechanical characteristics FPC holding force Ambient temperature Storage temperature Conditions Using 250V DC megger (applied for 1 min.) Max. 100mΩ Y3B: Min. 0.13N/pin contacts × pin contacts (initial) Y3BW: Min. 0.13N/pin contacts × pin contacts + 1.00N (initial) –55°C to +85°C –55°C to +85°C (product only) –40°C to +50°C (emboss packing) No short-circuiting or damage at a detection current of 1 mA when the specified voltage is applied for one minute. Based on the contact resistance measurement method specified by JIS C 5402. Measurement of the maximum force applied until the inserted compatible FPC is pulled out in the insertion axis direction while the connector lever is closed No freezing at low temperatures. No dew condensation. Conformed to MIL-STD-202F, method 107G Thermal shock resistance (with FPC mated) 5 cycles, insulation resistance min. 100MΩ, contact resistance max. 80mΩ Environmental characteristics Humidity resistance (with FPC mated) Saltwater spray resistance (with FPC mated) H2S resistance (with FPC mated) Soldering heat resistance Lifetime characteristics Insertion and removal life Unit weight Panasonic Corporation 120 hours, insulation resistance min. 100MΩ, contact resistance max. 100mΩ 24 hours, insulation resistance min. 100MΩ, contact resistance max. 100mΩ 48 hours, contact resistance max. 100mΩ Peak temperature: 260°C or less 300°C within 5 sec. 350°C within 3 sec. 20 times Order Temperature (°C) 1 –55 −30 2 3 85 +30 4 –55 −30 Time (minutes) 30 Max. 5 30 Max. 5 Bath temperature 40±2°C, humidity 90 to 95% R.H. Bath temperature 35±2°C, saltwater concentration 5±1% Bath temperature 40±2°C, gas concentration 3±1 ppm, humidity 75 to 80% R.H. Reflow soldering Soldering iron Repeated insertion and removal: min. 10 sec./time Y3B: 61 pin contact type: 0.10 g Y3BW: 51 pin contact type: 0.09 g Automation Controls Business Division industrial.panasonic.com/ac/e/ ACCTB47E 201303-T AYF33 2. Material and surface treatment Part name Material Housing: LCP resin (UL94V-0) Lever: LCP resin (UL94V-0) Molded portion Contact Surface treatment — Contact portion; Base: Ni plating, Surface: Au plating Terminal portion; Base: Ni plating, Surface: Au plating Copper alloy DIMENSIONS (Unit: mm) The CAD data of the products with a CAD Data mark can be downloaded from: http://industrial.panasonic.com/ac/e/ Y3B Terminal coplanarity 0.1 (0.10) C±0.20 ACCTB47E 201303-T 2.95 (0.30) (0.10) (0.40) (Contact) B±0.20 Panasonic Corporation (1.35) (FPC insertion depth) B C 3.60 4.20 4.80 5.40 6.00 6.60 7.80 8.40 9.00 9.60 10.80 11.40 12.00 12.60 13.20 15.00 16.80 19.80 1.80 2.40 3.00 3.60 4.20 4.80 6.00 6.60 7.20 7.80 9.00 9.60 10.20 10.80 11.40 13.20 15.00 18.00 1.20 1.80 2.40 3.00 3.60 4.20 5.40 6.00 6.60 7.20 8.40 9.00 9.60 10.20 10.80 12.60 14.40 17.40 Automation Controls Business Division 0.60±0.10 (Terminal pitch) 0.30±0.10 (Contact pitch) 0.60±0.10 (Terminal pitch) (3.15) The degree of terminal flat 0.1 1.80±0.20 (0.10) (0.10) 1.80±0.20 (Contact) (1.35) (FPC insertion depth) 2.95 industrial.panasonic.com/ac/e/ (1.84) (3.15) A 3.90 0.90±0.10 0.90±0.10 0.30±0.10 (Terminal pitch) 0.60±0.10 (Terminal pitch) Number of pins/ dimension 7 9 11 13 15 17 21 23 25 27 31 33 35 37 39 45 51 61 (0.40) 0.60±0.10 (Terminal pitch) CAD Data (0.30) A 1.35 (Suction area) No. of pins: Even number (8 pins) CAD Data (1.84) 1.35 (Suction area) No. of pins: Odd number AYF33 RECOMMENDED FPC DIMENSIONS Y3B (Finished thickness: t = 0.2±0.03) The conductive parts should be based by Ni plating and then Au plating. 0.30±0.07 0.60±0.07 Cutting direction* 0.10 max. *Cut FPC from the copper foil side 0.20±0.02 to the reinforcing plate side. 0.30+0.04 –0.03 (Contact width) 0.60±0.07 0.60±0.02 (Pitch) No. of pins: Even number (8 pins) For Top Contacts B C 2.40 3.00 3.60 4.20 4.80 5.40 6.60 7.20 7.80 8.40 9.60 10.20 10.80 11.40 12.00 13.80 15.60 18.60 1.80 2.40 3.00 3.60 4.20 4.80 6.00 6.60 7.20 7.80 9.00 9.60 10.20 10.80 11.40 13.20 15.00 18.00 1.20 1.80 2.40 3.00 3.60 4.20 5.40 6.00 6.60 7.20 8.40 9.00 9.60 10.20 10.80 12.60 14.40 17.40 0.10 max. 0.20±0.02 0.60±0.07 0.20±0.03 0.10 max. 0.20±0.02 0.60±0.07 0.60±0.02 (pitch) 2.70±0.05 1.80±0.03 1.80±0.03 0.30±0.07 0.10 max. 0.30 +0.04 −0.03 (Width of contact area) 0.60±0.07 Cutting direction* *Cut FPC from the copper foil side to the reinforcing board side. Cutting direction* *Cut FPC from the copper foil side to the reinforcing board side. Panasonic Corporation Automation Controls Business Division 0.20±0.03 3.00±0.50 (Reinforcing board) 0.30±0.07 0.30 +0.04 −0.03 (Width of contact area) 0.30±0.07 0.60±0.02 (pitch) 0.30±0.02 (pitch) 0.30 +0.04 −0.03 (Width of contact area) 2-R 0.2 0 1.35±0.15 1.45±0.15 1.55±0.15 2.00±0.30 (Conductor exposed area) 2.70±0.05 1.80±0.03 1.80±0.03 3.00±0.50 (Reinforcing board) 0.30 +0.04 −0.03 (Width of contact area) 0.60±0.07 0.60±0.02 (pitch) A For Bottom Contacts 1.35±0.15 1.45±0.15 1.55±0.15 2.00±0.30 (Conductor exposed area) 0.75±0.10 0.65±0.10 0.15 max. 0.30±0.07 0.60±0.02 (pitch) 0.30±0.02 (pitch) 0.10 max. 2-R 0.2 0 0.20±0.03 3.00±0.50 (Reinforcing plate) 0.15 max. 20 0. R 0.10 max. 0.30+0.04 –0.03 (Contact width) 0.75±0.10 0.65±0.10 0.15 max. 2- A±0.05 B±0.03 C±0.03 0.60±0.02 (Pitch) 0.30±0.02 (Pitch) 1.35±0.15 1.45±0.15 1.55±0.15 2.00±0.30 (Exposed part of the conductor) 0.30±0.07 0.65±0.10 0.75±0.10 No. of pins: Odd number Number of pins/ dimension 7 9 11 13 15 17 21 23 25 27 31 33 35 37 39 45 51 61 industrial.panasonic.com/ac/e/ ACCTB47E 201303-T AYF33 DIMENSIONS (Unit: mm) The CAD data of the products with a CAD Data mark can be downloaded from: http://industrial.panasonic.com/ac/e/ Y3BW 1.35 (Suction area) CAD Data A 0.60±0.10 (Contact pitch) 0.30±0.10 (Contact pitch) 0.60±0.10 (Contact pitch) (3.15) (1.84) 0.90±0.10 Holding contacts (The holding contacts cannot be used as conductors.) Terminal coplanarity (1.35) (FPC insertion depth) 0.1 (2.95) (Contact and holding contact) (0.40) B±0.20 (0.10) General tolerance: ±0.3 (0.10) A B C D 5.40 3.00 2.40 3.60 25 51 9.60 17.40 7.20 15.00 6.60 14.40 7.80 15.60 A B C (0.30) C±0.20 (0.10) Number of pins/ dimension 11 D±0.20 RECOMMENDED FPC DIMENSIONS Y3BW (Finished thickness: t = 0.2±0.03) The conductive parts should be based by Ni plating and then Au plating. 0.20±0.03 3.00±0.50 (Support plates) .20 .20 R0 1.45±0.10 0.75±0.05 0.15 max. 0 2 0. R 2- R0 0.60±0.07 0.65±0.10 0.75±0.10 1.35±0.15 1.45±0.15 1.55±0.15 2.00±0.30 (Exposed part of the conductor) 0.60±0.07 A±0.05 B±0.03 C±0.03 0.60±0.02 (Pitch) 0.30±0.02 (Pitch) 0.30 +0.04 −0.03 (Contact width) 0.10 max. 0.90±0.07 0.45 +0.03 −0.05 0.90±0.07 0.60±0.02 (Pitch) ACCTB47E 201303-T Panasonic Corporation 0.10 max. 0.20±0.02 0.30 +0.04 −0.03 (Contact width) Cutting direction Cut FPC from the copper foil side to the reinforcing plate side. Automation Controls Business Division Number of pins/ dimension 11 4.20 3.00 2.40 25 51 8.40 16.20 7.20 15.00 6.60 14.40 industrial.panasonic.com/ac/e/ AYF33 EMBOSSED TAPE DIMENSIONS (Unit: mm) (Common for respective contact type) • Specifications for taping Tape I (A±0.3) (A±0.3) 28.40 (B) (C±1) Taping reel Top cover tape Embossed carrier tape 380 dia. (2.0) (4.0) (8.0) (1.75) (2.0) (4.0) (1.75) (8.0) Leading direction after packaging (B) • Specifications for the plastic reel (In accordance with EIAJ ET-7200B.) Tape II Embossed mounting-hole Label 1.5 1.5 .1 +0 .0 00 .1 +0 .0 00 dia dia . . • Y3B Dimension table (Unit: mm) Number of pins 7 to 17 21 to 45 51, 61 Type of taping Tape I Tape I Tape II A 16.00 24.00 32.00 B 7.50 11.50 14.20 C 17.40 25.40 33.40 Quantity per reel 5,000 5,000 5,000 A 16.00 24.00 32.00 B 7.50 11.50 14.20 C 17.40 25.40 33.40 Quantity per reel 5,000 5,000 5,000 • Y3BW Dimension table (Unit: mm) Number of pins 11 25 51 Type of taping Tape I Tape I Tape II • Connector orientation with respect to embossed tape feeding direction Type Y3B Direction of tape progress Y3BW NOTES • Y3B No. of pins: Odd number No. of pins: Even number (8 pins) 0.60±0.03 0.23±0.03 0.23±0.03 0.60±0.03 0.60±0.03 0.23±0.03 0.23±0.03 0.60±0.03 Metal mask thickness: When 120µm (Front terminal portion opening area ratio: 96%) (Back terminal portion opening area ratio: 96%) 0.22±0.01 0.60±0.01 Automation Controls Business Division 0.60±0.01 0.22±0.01 0.34±0.01 0.44±0.01 3.15±0.01 Recommended metal mask pattern Metal mask thickness: When 120µm (Front terminal portion opening area ratio: 96%) (Back terminal portion opening area ratio: 96%) 0.34±0.01 0.44±0.01 3.15±0.01 Recommended metal mask pattern 0.60±0.01 0.22±0.01 Panasonic Corporation Recommended PC board pattern (mounting layout) (TOP VIEW) 0.34±0.03 0.44±0.03 3.15±0.03 Recommended PC board pattern (mounting layout) (TOP VIEW) 0.34±0.03 0.44±0.03 3.15±0.03 1. Recommended PC board and metal mask patterns Connectors are mounted with high pitch density, intervals of 0.3 mm or 0.5 mm. In order to reduce solder and flux rise, solder bridges and other issues make sure the proper levels of solder is used. The figures to the right are recommended metal mask patterns. Please use them as a reference. 0.22±0.01 0.60±0.01 industrial.panasonic.com/ac/e/ ACCTB47E 201303-T AYF33 • Y3BW 0.60±0.03 0.23±0.03 0.30±0.03 : Insulation Please refer to the latest product specifications when designing your product. 0.34±0.03 0.44±0.03 3.15±0.03 Recommended PC board pattern (mounting layout) (TOP VIEW) 0.23±0.03 0.60±0.03 Recommended metal mask pattern 0.34±0.01 0.44±0.01 3.15±0.01 Metal mask thickness: When 120µm (Front terminal portion opening area ratio: 96%) (Back terminal portion opening area ratio: 96%) 0.60±0.01 0.22±0.01 0.22±0.01 0.60±0.01 ACCTB47E 201303-T Panasonic Corporation Automation Controls Business Division industrial.panasonic.com/ac/e/ Notes on Using FPC Connectors ■ PC board design Design the recommended foot pattern in order to secure the mechanical strength in the soldered areas of the terminal. ■ FPC and equipment design • Design the FPC based with recommended dimensions to ensure the required connector performance. • When using back lock type, secure enough space for closing the lever and for open-close operation of the lever. • Make sure that connector positioning and FPC length are appropriate to prevent diagonal insertion of the FPC. Due to the FPC size, weight, or the reaction force of the routed FPC, FPC may be removed. Carefully check the equipment design. Take required measures to prevent the FPC from being removed due to a fall, vibration, or other impact. (Y3BW/Y5BW) ■ The holding contacts cannot be used as conductors. The holding contacts are located on both ends of the contacts, and the shape of the soldered portions is the same as that of the other contacts. Use caution to ensure connect identification. (Y3BL) ■ Soldering terminal structure Since soldering terminals touch FPC, note that the short circuit may occur when the metal parts exposed on side of FPC. ■ Connector mounting Excessive mounter chucking force may deform the molded or metal part of the connector. Consult us in advance if chucking is to be applied. ■ Soldering 1) Manual soldering • Due to the connector’s compact size, if an excessive amount of solder is applied during manual soldering, the solder may creep up and flux wicking near the contact points, or solder interference may cause contact failure. • Make sure that the soldering iron tip is heated within the temperature and time limits indicated in the specifications. • Flux from the solder wire may adhere to the contact surfaces during soldering operations. After soldering, carefully check the contact surfaces and cleans off any flux solder use. • Be aware that a load applied to the connector terminals while soldering may displace the contact. • Thoroughly clean the iron tip. 2) Reflow soldering • Screen-printing is recommended for printing paste solder. • To achieve the appropriate soldering state, make sure that the reflow temperature, PC board foot pattern, window size and thickness of metal mask are recommended condition. • Note that excess solder on the terminals prevents complete insertion of the FPC, and causes flux climbing up. • A screen thickness of 120µm is recommended during cream solder printing. • Consult us when using a screen-printing thickness other than that recommended. • Depending on the size of the connector being used, self alignment may not be possible. Accordingly, carefully position the terminal with the PC board pattern. Panasonic Corporation • The recommended reflow temperature profile is given in the figure below. Upper limit (Soldering heat resistance) Lower limit (Solder wettability) Temperature 260°C 230°C 180°C Peak temperature Preheating 220°C 200°C 25 sec. 150°C 60 to 120 sec. 70 sec. Time • The temperature is measured on the surface of the PC board near the connector terminals. • Depending on reflow condition, poor contact may occur by solder and flux wicking. Please set the reflow conditions that considering the characteristics of solder and flux. Also please make consideration in setting the reflow times and O2 concentration to prevent poor contact by solder and flux wicking. • When performing reflow soldering on the back of the PC board after reflow soldering the connector, secure the connector using, for example, an adhesive. (Double reflow soldering on the same side is possible.) Do not touch the lever or apply any load to the lever until the second reflow soldering. Otherwise, contact deflection occurs and the terminals may be deformed by reflow heating. 3) Reworking on a soldered portion • Finish reworking in one operation. • For reworking of the solder bridge, use a soldering iron with a flat tip. Do not add flux, otherwise the flux may creep to the contact parts. When adding the solder for reworking, do not add an excessive solder. Otherwise, solder and flux may creep up and solder bridges may occur. • Use a soldering iron whose tip temperature is within the temperature range specified in the specifications. ■ Do not drop or handle the connector carelessly. Otherwise, the terminals may become deformed due to excessive force or applied solderability may be during reflow degrade. ■ Do not open/close the lever or insert/remove an FPC until the connector is soldered. Forcibly applied external pressure on the terminals can weaken the adherence of the terminals to the molded part or cause the terminals to lose their evenness. In addition, do not insert an FPC into the connector before soldering the connector. ■ When cutting or bending the PC board after mounting the connector, be careful that the soldered sections are subjected to excessive force. Automation Controls Business Division The soldered areas should not be subjected to force. industrial.panasonic.com/ac/e/ ACCTB13E 201303-T Notes on Using FPC Connectors ■ Precautions for insertion/removal of FPC <Front-Lock> • To open the lever, hold its center and pull it up. An uneven load applied to the lever on one side may deform and break the lever. Do not apply an excessive load to the lever in the opening direction, otherwise, the terminals may be deformed. • Don’t further apply an excessive load to the fully opened lever; otherwise, the lever may be deformed. • Fully open the lever to insert an FPC. • Since this product connects at the bottom, please insert the FPC so that its electrode plane is facing the board to which it will be mounted. Do not insert the FPC in the reverse direction of the contact section; otherwise, operation failures or malfunctions may be caused. <Back-Lock> • Avoid touching the lever (applying any external force) until an FPC is inserted. Do not open/close the lever without an FPC inserted. Failure to follow this instruction will cause the contacts to warp, leading to the contact tips to interfere with the insertion of an FPC, deforming the terminals. Failure to follow this instruction may cause the lever to be removed, terminals to be deformed, and/or the FPC insertion force to increase. Without an FPC inserted (140°) (Y3FT) • This product has a structure to position an inserted FPC using the FPC tabs. Therefore, insert an FPC at an angle to the board. If the FPC is inserted in the direction parallel to the board, the molded positioning parts block the FPC, leading to incomplete insertion. Do not insert the FPC at an excessive angle to the board. Otherwise, it may cause the deformation of metal parts, FPC insertion failures, and FPC circuit breakages. FPC FPC positioning part (Y3F) • Completely insert the FPC horizontally. Do not insert the FPC at an excessive angle to the board. Otherwise, it may cause the deformation of metal parts, FPC insertion failures, and FPC circuit breakages. • The FPC insertion section is on the opposite side of the lever. Be careful not to make a mistake in the FPC insertion position or the lever opening/closing position. Otherwise, a contact failure or connector breakage may occur. • Do not insert an FPC upside down. Inserting an FPC in a direction opposite to that you intended may cause an operation failure or malfunction. • Insert an FPC with the lever opened at right angle, that is, in the factory default position. • Completely insert the FPC horizontally. An FPC inserted at an excessive angle to the board may cause the deformation of metal parts, FPC insertion failures, and FPC circuit breakages. • Insert the FPC to the full depth of the connector without altering the angle. • Insert the FPC into the connector after checking the position of FPC insertion slot and FPC. Do not insert the FPC without positioning the FPC and connector. Otherwise, it may cause connector breakages. When it is hard to insert the FPC, do not insert the FPC on that condition. Confirm the FPC and connector positioning. • Do not apply an excessive load to the lever in the opening direction beyond its open position; otherwise, the lever may be deformed or removed. • Do not apply an excessive load to the lever in a direction perpendicular to the lever rotation axis or in the lever opening direction; otherwise, the terminals may be deformed, and the lever may be removed. FPC • Insert the FPC to the full depth of the connector without altering the angle. • When closing the lever, carefully use the tip of your finger to push the entire lever or both sides of it. If pressure to the lever is applied unevenly, IE: only the edge, it may deform or break the FPC. Make sure that the lever is closed completely. Not doing so will cause a faulty connection. • Avoid applying an excessive load to the top of the lever during or after closing the lever. Otherwise, the terminals may be deformed. • Remove the FPC at an angle with the lever fully opened. If the lever is closed, or if the FPC is forcedly pulled into a direction parallel to the board, the molded part may break. ACCTB13E 201303-T Panasonic Corporation • To close the lever, turn down the lever by pressing the entire lever or both sides of the lever with fingers tips. And close the lever completely. Be careful not to apply partial load to the lever that may cause its deformation or destruction. Close the lever completely to prevent contact failure. • If pressure to the lever is applied unevenly, it may deform or break the FPC. Make sure that the lever is closed completely. Not doing so will cause a faulty connection. • Avoid applying an excessive load to the top of the lever during or after closing the lever. Otherwise, the terminals may be deformed. • When opening the lever to remove the FPC, ensure that the lever will not go over the initial position; otherwise, the lever may be removed. Automation Controls Business Division industrial.panasonic.com/ac/e/ Notes on Using FPC Connectors • Remove the FPC at parallel with the lever fully opened. If the lever is closed, or if the FPC is forcedly pulled, the product or FPC may break. • If a lever is accidentally detached during the handling of a connector, do not use the connector any longer. ■ After an FPC is inserted, carefully handle it so as not to apply excessive stress to the base of the FPC. When using FPC with a bent condition, please pay attention to precautions below; otherwise, in some conditions it may cause conduction failure, connector breakage, unlocking lever or FPC disconnection. • Design so that a load is not applied to connector directly by FPC bending. • Avoid sharp FPC bending at the root of FPC insertion part. • Design so that a load is not applied to the part of FPC bending. • Fix the FPC if there might be a load on FPC when using the FPC with cutout, do not apply a bending load to the cutout part of FPC. Otherwise, it may cause FPC disconnection and deformation since the cutout part of FPC is subjected to bending stress. FPC cutout part ■ Other cautions • When coating the PC board after soldering the connector (to prevent the deterioration of insulation), perform the coating in such a way so that the coating does not get on the connector. • The connectors are not meant to be used for switching. • There is no problem on the product quality though the swelling and the black spot, etc. might be generated in the molding parts. Please refer to the latest product specifications when designing your product. Panasonic Corporation Automation Controls Business Division industrial.panasonic.com/ac/e/ ACCTB13E 201303-T