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| Data sheet Connectors The Interface Partner SL-SMT 3.5 ... reduces costs in the production process SL-SMT 3.5 is the high temperature resistant pin header for the 3.5 mm pitch range specially developed to be compatible with Reflow production processes. Existing pcb connector headers cannot withstand the high temperatures experienced in Reflow soldering up to 260 C. The SL-SMT has been designed using LCP (Liquid Crystal Polymer) which is stable at these high temperatures. In addition, convential assembly of pcb modules requires both Wave soldering for standard THT (Through-Hole-Technology) components like pcb connector headers; and then Reflow soldering for the SMT (Surface-Mount-Technology) components. With the SL-SMT, which uses THR technology, the Wave solder operation is not needed. The shorter THR solder pins offer the flexibility of SMT components but achieve a mechanical strength of 10x that of "Gull Wing" SMT components. This additional strength is of great importance for pcb connectors where connection operations put strain onto standard SMT solder joints. The SL-SMT is not only suitable for the latest soldering techniques, it has also been designed to be compatible with standard automatic "Pick-and-Place" machines. "Tape-on-Reel" and "Tray" packaging enable fully automatic component placement of the 90 (horizontal) and 180 (vertical) pin headers. These products are available in the standard open-ended, closed-ended and flanged versions, and mate with any of the female socket connectors in our BL 3.5 range. Advantages: up to 30% reduction in the number of production steps required stable at 260 C - compatible for Convection and Vapour-phase Reflow soldering compatible for automatic "Pick-and-Place" THR gives 10x greater strength than "Gull Wing" SMT placement on both sides of pcb possible USA Weidmuller Inc. 821 Southlake Boulevard Richmond, VA. 23236 Tel. (804) 794-2877 Fax (804) 794-0252 Great Britain Weidmuller Ltd. 1 Abbey Wood Road, Kingshill, West Malling Kent ME 19 4YT Tel. (17 95) 58 09 99 Fax (17 32) 87 42 96 Other countries Weidmuller Interface GmbH & Co. Postfach 30 30 D-32720 Detmold Tel. (0 52 31) 14-0 Fax (05 23 1) 14-20 83 SL-SMT 3.5 pin headers At the pcb level, the SL-SMT 3.5 pin header ensures a cost saving in the production process and, for field wiring, offers a free choice of connection technology thanks to an extensive range in 3.5 mm pitch. Packaging types of the SL SMT 3.5 The packaging of the SL SMT 3.5 was conceived for the typical component placement process used for SMT components: Automatic component placement: Tape-on-Reel (ToR) Tray Manual component placement: Standard box (Std) The high temperature resistant SL SMT 3.5 pin header can also be used in the wave soldering process, the advantage being that the plastic is resistant to high temperatures. For this application however, standard pin lengths are needed. These are available on request. Technical data Materials Insulation material Colour Fusion temperature Flammability class. Basis contact material Contact plating 1) Characteristic system values Pitch Connection method Processing method Soldering pin length 2) PCB hole diameter 3) Insulation resistance Through resistance Operating temperature range with BL 3.5 VDE 0110 4.97 rated data Rated current 4) Overvoltage category/Pollution severity Rated voltage Impulse voltage UL rated data Rated voltage, industrial Rated current CSA rated data Rated voltage, industrial Rated current LCP, halogen-free black 335 V0 CuSn tin-plated Derating curves C UL 94 mm mm omm M m C 3.50 Through-Hole-Reflow convection and vapour phase soldering 1.5 1.4+0.1 106 4.2 -20...+100 BL 3.5/SL-SMT 3.5/90, 2 and 24 poles Conductor H05V-K0.5mm2 A V kV 13 III/3 125 2.5 III/2 125 2.5 II/2 250 2.5 V~ A 300 10 V~ A 300 10 Application notes BL 3.5/SL-SMT 3.5/90, 2 and 24 poles Conductor H07V-K1.5mm2 1) 2) 3) 4) gold-plated contacts available on request additional soldering pin lengths on request pls. see chapter "design recommendation" referred to 20 C ambient temperature, rated cross-section and max. poles in connection with BL 3.5 For the mounting of PCBs it should be noted, that the rated data given in the data sheet relate only to the connection elements. The necessary creepage and clearance paths must be observed in connection with the respective applicant in accordance to VDE 0110. The current-carrying capacity is to be determined according to DIN IEC 326 part 3. Weidmuller connectors are tested according to the DIN 0627 standard, and are valid for its field of applications. Provided that the connectors are used for the intended purpose, all requirements with respect to the occuring of electrical, mechanical, thermic and corrosive stress will be satisfied. BL 3.5/SL-SMT 3.5, 24 poles (conductor bridges over the reflow soldering point) Conductor H07V-K1.5mm2 2 Machine oriented packaging "Tape-on-Reel" Reel dimensions and position of pin headers Feed direction even pole numbers uneven pole numbers pin header is reversed The pin headers for the 90 and 180 versions of the SL-SMT 3.5 are available in "Tape-on-Reel" for automatic component replacement. The reels are anti-static, have a diameter of 330 mm, and are designed for all commercially available feeders. The tapes used conform to the standard IEC 60286-3 and are made of anti-static, black polystyrene. The tape is covered with a transparent plastic film. A high temperature resistant pick-andplace pad is located in the middle of the pin header for automatic gripping of the straight pin header SL-SMT 3.5/180. This pick-and-place pad is included in the "Tape-on-Reel" packaging. The angled SL-SMT 3.5/90 pin header is positioned so that no pick-and-place pad is needed for automatic gripping. Feed direction even pole numbers uneven pole numbers pin header is reversed Unit packaging "Tape-on-Reel" Quantity of SL-SMT 3.5 on the reel open and closed versions Tape width 56 mm Reel diameter 330 mm Poles 2...11 SL-SMT 3.5/90 250 pcs. SL-SMT 3.5/180 200 pcs. Unit packaging "Tape-on-Reel" Quantity of SL-SMT 3.5 on the reel flanged version Tape width 56 mm Reel diameter 330 mm Poles 2...9 SL-SMT 3.5/90 250 pcs. SL-SMT 3.5/180 200 pcs. In tape, the open and closed versions of the SL-SMT 3.5 are currently only available up to 11 poles. Additional tape widths on request. In tape, the flanged version of the SL-SMT 3.5 is currently only available up to 9 poles. Additional tape widths on request. 3 Machine oriented packaging "Tray" Tray dimensions and position of SL-SMT 3.5 pin headers The optimum positioning points for the vacuum pipette depend on the length of the connectors (open, closed or flange). In the tray drawing, we have marked these points with Start X and Step X for the X axis with reference to the example of an SL-SMT 3.5/24/90 without a flange. The following table indicates the dimensions for the X and Y axes for the different pole numbers and versions. To facilitate adjustment on the machine, the label shows the necessary dimension in short form. Example of Label Cat. No. 176179 3001 28.35 / 17.50 / 15.0 -19.25 / 20.0 / 5 Number Step Y Step Y in mm Start Y in mm Number Step X Step X in mm Start X in mm The trays are adapted to the SL-SMT 3.5 pin headers and are based on the standard EN 60286-5. The tray material consists of black anti-static polystyrene. For transport, the trays are covered with a transparent cover. A high temperature resistant pick-andplace pad is placed in the middle of the pin header for automatic gripping of the straight pin header SL-SMT 3.5/180 using a vacuum pipette. This pad in included in the tray packaging. The angled pin header SL-SMT 3.5/90 was conceived to ensure that no pickand-place pad is needed for automatic gripping. Tray dimensions SL-SMT 3.5/90 and 180 open and closed versions X-values 90/180 No. Poles 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Y-values 90 Start Y (mm) 19.25 Step Y (mm) 20.00 Number Step Y 5 Start X (mm) 28.35 30.10 31.85 33.60 35.35 37.10 38.85 40.60 42,35 44.10 45.85 47.60 49.35 51.10 52.85 54.60 56.35 58.10 59.85 61.60 63.35 Step X (mm) 17.50 21.00 24.50 28.00 31.50 35.00 38.50 42.00 45.50 49.00 52.50 56.00 59.50 63.00 66.50 70.00 73.50 77.00 80.50 84.00 87.50 Number Step X 15 13 11 9 8 7 6 6 5 5 4 4 3 3 3 3 3 2 2 2 2 Tray dimensions SL-SMT 3.5/90 and 180 flange versions X-values 90/180 No. Poles 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Start X (mm) 28.35 30.10 31.85 33.60 35.35 37.10 38.85 40.60 42.35 44.10 45.85 47.60 49.35 51.10 52.85 54.60 56.35 58.10 59.85 61.60 63.35 65.10 66.85 Step X (mm) 17.50 21.00 24.50 28.00 31.50 35.00 38.50 42.00 45.50 49.00 52.50 56.00 59.50 63.00 66.50 70.00 73.50 77.00 80.50 84.00 87.50 91.00 94.50 Number Step X 15 13 11 9 8 7 6 6 5 5 4 4 3 3 3 3 3 2 2 2 2 2 2 Y-values 180 Start Y (mm) 17.95 Step Y(mm) 20.00 Number Step Y 5 Unit packaging "Tray" SL-SMT 3.5/90 and 180 open and closed versions No. Poles 2...3 4 5 6 7 8 9 10...11 12...13 14...15 16...20 21...24 on request 96 pcs. 84 pcs. 72 pcs. 60 pcs. 54 pcs. 48 pcs. 42 pcs. 36 pcs. 30 pcs. 24 pcs. 18 pcs. Tray content Unit packaging "Tray" SL-SMT 3.5/90 and 180 flange version No. Poles 2 3 4 5 6 7 8...9 10...11 12...13 14...18 19...24 96 pcs. 84 pcs. 72 pcs. 60 pcs. 54 pcs. 48 pcs. 42 pcs. 36 pcs. 30 pcs. 24 pcs. 18 pcs. Tray content 4 Machine oriented packaging "Tray" Tray dimensions and position of pin headers SL-SMT 3.5/90 even pole numbers uneven pole numbers even pole numbers uneven pole numbers User preparation of the SL-SMT 3.5 in the "Tray" For user preparation of the SL-SMT 3.5 in the "Tray", we also offer all components separately. Tray empty Type Tray SL-SMT 3.5/90 Tray SL-SMT 3.5/180 Tray-Deckel SL-SMT 3.5 PPP-SL-SMT 3.5/180 Description for SL-SMT 3.5/4...24/90, SL-SMT 3.5/4...24/90G and SL-SMT 3.5/2...24/90F for SL-SMT 3.5/4...24/180 , SL-SMT 3.5/4...24/180G and SL-SMT 3.5/2...24/180F for Trays SL-SMT 3.5/.../90 and SL-SMT 3.5/.../180 (open, closed, flange) - for covering and stacking the trays pick-and-place-pad for SL-SMT 3.5/2...24/180 (open, closed, flange) Cat. No. 177210 0000 177215 0000 177216 0000 176224 0000 Qty. 1 1 1 500 SL-SMT 3.5 pin headers Poles 2...4 5...16 17...24 Type SL-SMT 3.5/90 (open, closed, flange) and SL-SMT 3.5/180 (open, closed, flange) SL-SMT 3.5/90 (open, closed, flange) and SL-SMT 3.5/180 (open, closed, flange) SL-SMT 3.5/90 (open, closed, flange) and SL-SMT 3.5/180 (open, closed, flange) Order-No. see page 6+7 see page 6+7 see page 6+7 Qty. 100 50 20 5 SL-SMT 3.5/90 pin headers open ends attachable without loss of poles SL-SMT 3.5/90G pin headers closed ends SL-SMT 3.5/90F pin headers flange version PCB fixing screw Cat. No. 161074 0000 Pin length Colour Poles Type 2 SL-SMT 3.5/2/90 3 SL-SMT 3.5/3/90 4 SL-SMT 3.5/4/90 5 SL-SMT 3.5/5/90 6 SL-SMT 3.5/6/90 7 SL-SMT 3.5/7/90 8 SL-SMT 3.5/8/90 9 SL-SMT 3.5/9/90 10 SL-SMT 3.5/10/90 11 SL-SMT 3.5/11/90 12 SL-SMT 3.5/12/90 13 SL-SMT 3.5/13/90 14 SL-SMT 3.5/14/90 15 SL-SMT 3.5/15/90 16 SL-SMT 3.5/16/90 17 SL-SMT 3.5/17/90 18 SL-SMT 3.5/18/90 19 SL-SMT 3.5/19/90 20 SL-SMT 3.5/20/90 21 SL-SMT 3.5/21/90 22 SL-SMT 3.5/22/90 23 SL-SMT 3.5/23/90 24 SL-SMT 3.5/24/90 1) on request 1.5 mm Pin length Colour ToR 4001 4001 4001 4001 4001 4001 4001 4001 4001 4001 o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) Tray o. r.1 o. r.1 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 Std 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 Poles Type 2 SL-SMT 3.5/2/90G 3 SL-SMT 3.5/3/90G 4 SL-SMT 3.5/4/90G 5 SL-SMT 3.5/5/90G 6 SL-SMT 3.5/6/90G 7 SL-SMT 3.5/7/90G 8 SL-SMT 3.5/8/90G 9 SL-SMT 3.5/9/90G 10 SL-SMT 3.5/10/90G 11 SL-SMT 3.5/11/90G 12 SL-SMT 3.5/12/90G 13 SL-SMT 3.5/13/90G 14 SL-SMT 3.5/14/90G 15 SL-SMT 3.5/15/90G 16 SL-SMT 3.5/16/90G 17 SL-SMT 3.5/17/90G 18 SL-SMT 3.5/18/90G 19 SL-SMT 3.5/19/90G 20 SL-SMT 3.5/20/90G 21 SL-SMT 3.5/21/90G 22 SL-SMT 3.5/22/90G 23 SL-SMT 3.5/23/90G 24 SL-SMT 3.5/24/90G 1) on request 1.5 mm Pin length Colour ToR 4001 4001 4001 4001 4001 4001 4001 4001 4001 4001 o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) Tray o. r.1 o. r.1 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 Std 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 Poles Type 2 SL-SMT 3.5/2/90F 3 SL-SMT 3.5/3/90F 4 SL-SMT 3.5/4/90F 5 SL-SMT 3.5/5/90F 6 SL-SMT 3.5/6/90F 7 SL-SMT 3.5/7/90F 8 SL-SMT 3.5/8/90F 9 SL-SMT 3.5/9/90F 10 SL-SMT 3.5/10/90F 11 SL-SMT 3.5/11/90F 12 SL-SMT 3.5/12/90F 13 SL-SMT 3.5/13/90F 14 SL-SMT 3.5/14/90F 15 SL-SMT 3.5/15/90F 16 SL-SMT 3.5/16/90F 17 SL-SMT 3.5/17/90F 18 SL-SMT 3.5/18/90F 19 SL-SMT 3.5/19/90F 20 SL-SMT 3.5/20/90F 21 SL-SMT 3.5/21/90F 22 SL-SMT 3.5/22/90F 23 SL-SMT 3.5/23/90F 24 SL-SMT 3.5/24/90F 1) on request 1.5 mm Cat. No. 176177 176178 176179 176180 176181 176182 176183 176184 176185 176186 176187 176188 176189 176190 176191 176192 176193 176194 176195 176196 176197 176198 176199 Cat. No. 176154 176155 176156 176157 176158 176158 176160 176161 176162 176163 176164 176165 176166 176167 176168 176169 176170 176171 176172 176173 176174 176175 176176 Cat. No. 176200 176201 176202 176203 176204 176205 176206 176207 176208 176209 176210 176211 176212 176213 176214 176215 176216 176217 176218 176219 176220 176221 176222 ToR 4001 4001 4001 4001 4001 4001 4001 4001 o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1)) o. r.1) Tray 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 Std 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 Accessories Description Locking latch Coding element Light indicator Type BL/SL 3.5 VR OR BL/SL 3.50 KO OR SL 3.5 FLA 1.5/8 Cat. No. 166931 0000 169343 0000 159751 0000 Description Locking latch Coding element Light indicator Type BL/SL 3.5 VR OR BL/SL 3.50 KO OR SL 3.5 FLA 1.5/8 Cat. No. 166931 0000 169343 0000 159751 0000 Description Locking latch Coding element Light indicator PCB fixing screw Type BL/SL 3.5 VR OR BL/SL 3.50 KO OR SL 3.5 FLA 1.5/8 PTSC KA 22x4.5 Cat. No. 166931 0000 169343 0000 159751 0000 161074 0000 Ordering note Depending on the packaging requirement, the corresponding 4-digit packaging number is added to the 6-digit Cat. No. ToR Tray Std = packaging in the "Tape-on-Reel" = packaging in the "Tray" = packaging in a "Standard box" Example for ordering in the "Tray": Poles Type Cat. No. ToR 2 SL-SMT 3.5/2/90 176177 ... Example for ordering in a "Standard box": Poles Type Cat. No. ToR 2 SL-SMT 3.5/2/90 176177 ... Example for ordering in the "Tape-on-Reel": Poles Type Cat. No. ToR Tray 2 SL-SMT 3.5/2/90 176177 4001 ... Std ... Tray 3001 Std ... Tray ... Std 2001 6 SL-SMT 3.5/180 pin headers open ends attachable without loss of poles SL-SMT 3.5/9180G pin headers closed ends SL-SMT 3.5/180F pin headers flange versions PCB fixing screw Cat. No. 161074 0000 Pin length Colour Polzahl Typ 2 SL-SMT 3.5/2/180 3 SL-SMT 3.5/3/180 4 SL-SMT 3.5/4/180 5 SL-SMT 3.5/5/180 6 SL-SMT 3.5/6/180 7 SL-SMT 3.5/7/180 8 SL-SMT 3.5/8/180 9 SL-SMT 3.5/9/180 10 SL-SMT 3.5/10/180 11 SL-SMT 3.5/11/180 12 SL-SMT 3.5/12/180 13 SL-SMT 3.5/13/180 14 SL-SMT 3.5/14/180 15 SL-SMT 3.5/15/180 16 SL-SMT 3.5/16/180 17 SL-SMT 3.5/17/180 18 SL-SMT 3.5/18/180 19 SL-SMT 3.5/19/180 20 SL-SMT 3.5/20/180 21 SL-SMT 3.5/21/180 22 SL-SMT 3.5/22/180 23 SL-SMT 3.5/23/180 24 SL-SMT 3.5/24/180 1) on request 1.5 mm Pin length Colour ToR 4001 4001 4001 4001 4001 4001 4001 4001 4001 4001 o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) Tray o. r.1 o. r.1 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 Std 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 Polzahl Typ 2 SL-SMT 3.5/2/180G 3 SL-SMT 3.5/3/180G 4 SL-SMT 3.5/4/180G 5 SL-SMT 3.5/5/180G 6 SL-SMT 3.5/6/180G 7 SL-SMT 3.5/7/180G 8 SL-SMT 3.5/8/180G 9 SL-SMT 3.5/9/180G 10 SL-SMT 3.5/10/180G 11 SL-SMT 3.5/11/180G 12 SL-SMT 3.5/12/180G 13 SL-SMT 3.5/13/180G 14 SL-SMT 3.5/14/180G 15 SL-SMT 3.5/15/180G 16 SL-SMT 3.5/16/180G 17 SL-SMT 3.5/17/180G 18 SL-SMT 3.5/18/180G 19 SL-SMT 3.5/19/180G 20 SL-SMT 3.5/20/180G 21 SL-SMT 3.5/21/180G 22 SL-SMT 3.5/22/180G 23 SL-SMT 3.5/23/180G 24 SL-SMT 3.5/24/180G 1) on request 1.5 mm Pin length Colour ToR 4001 4001 4001 4001 4001 4001 4001 4001 4001 4001 o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) Tray o. r.1 o. r.1 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 Std 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 Polzahl Typ 2 SL-SMT 3.5/2/180F 3 SL-SMT 3.5/3/180F 4 SL-SMT 3.5/4/180F 5 SL-SMT 3.5/5/180F 6 SL-SMT 3.5/6/180F 7 SL-SMT 3.5/7/180F 8 SL-SMT 3.5/8/180F 9 SL-SMT 3.5/9/180F 10 SL-SMT 3.5/10/180F 11 SL-SMT 3.5/11/180F 12 SL-SMT 3.5/12/180F 13 SL-SMT 3.5/13/180F 14 SL-SMT 3.5/14/180F 15 SL-SMT 3.5/15/180F 16 SL-SMT 3.5/16/180F 17 SL-SMT 3.5/17/180F 18 SL-SMT 3.5/18/180F 19 SL-SMT 3.5/19/180F 20 SL-SMT 3.5/20/180F 21 SL-SMT 3.5/21/180F 22 SL-SMT 3.5/22/180F 23 SL-SMT 3.5/23/180F 24 SL-SMT 3.5/24/180F 1) on request 1.5 mm Best.-Nr. 176073 176074 176075 176076 176077 176078 176079 176080 176081 176082 176083 176084 176085 176086 176087 176088 176089 176090 176091 176092 176093 176094 176095 Best.-Nr. 175298 175299 175300 175301 175302 175303 175304 175305 175306 175307 175308 175309 175310 175311 175312 175313 175314 175315 175316 175317 175318 175319 175320 Best.-Nr. 176096 176097 176098 176099 176100 176101 176102 176103 176104 176105 176106 176107 176108 176109 176110 176111 176112 176113 176114 176115 176116 176117 176118 ToR 4001 4001 4001 4001 4001 4001 4001 4001 o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) o. r.1) Tray 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 3001 Std 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 2001 Accessories Description Locking latch Coding element Light indicator Type BL/SL 3.5 VR OR BL/SL 3.50 KO OR SL 3.5 FLA 1.5/8 Cat. No. 166931 0000 169343 0000 159751 0000 Description Locking latch Coding element Light indicator Type BL/SL 3.5 VR OR BL/SL 3.50 KO OR SL 3.5 FLA 1.5/8 Cat. No. 166931 0000 169343 0000 159751 0000 Description Locking latch Coding element Light indicator PCB fixing screw Type BL/SL 3.5 VR OR BL/SL 3.50 KO OR SL 3.5 FLA 1.5/8 PTSC KA 22x4.5 Cat. No. 166931 0000 169343 0000 159751 0000 161074 0000 Ordering note Depending on the packaging requirement, the corresponding 4-digit packaging number is added to the 6-digit Cat. No. ToR Tray Std = packaging in the "Tape-on-Reel" = packaging in the "Tray" = packaging in a "Standard box" Example for ordering in the "Tray": Poles Type Cat. No. ToR 2 SL-SMT 3.5/2/90 176177 ... Example for ordering in a "Standard box": Poles Type Cat. No. ToR 2 SL-SMT 3.5/2/90 176177 ... Example for ordering in the "Tape-on-Reel": Poles Type Cat. No. ToR Tray 2 SL-SMT 3.5/2/180 176177 4001 ... Std ... Tray 3001 Std ... Tray ... Std 2001 7 Design recommendation We recommend design and calculation of the holes and soldering pastes as follows to ensure an optimum soldering result in the component placement and reflow processes: * Large fitting hole of the printed circuit board (final diameter) for automatic placement: o 1.4+0.1 mm This fitting hole is recommended to be able to compensate for printed circuit board, component and machine tolerances. * Small soldering eyelets: o 2.3 mm Small soldering eyelets to ensure that as much soldering paste as possible flows into the through-plating (fitting) hole. Soldering paste calculation The quantity of soldering paste depends on: * * * * * pcb thickness diameter (o) of the pcb's fitting hole soldering pin volume in the pcb soldering paste evaporation desired soldered joint shape form factor F 0.6-0.7 form factor F 0.7-0.8 Calculation example: V soldering pin V fitting hole V soldered joint volume V soldering paste volume = = = = 1.34 mm3 ((o fitting hole)2 * * pcb thickness) / 4 V fitting hole - V soldering pin V soldering paste volume * 2 1) = = = = = = ((1.4 mm)2 * * 1.6 mm) / 4 2.46 mm3 2.46 mm3 - 1.34 mm3 1.12 mm3 1.12 mm3 * 2 2.24 mm3 1) Factor 2 applies only to soldering pastes with a 50% evaporation volume. Adapt this value to other soldering pastes. Stencil calculation The stencil surface calculation depends on: * * * stencil thickness soldering paste volume soldered joint shape Calculation example: A stencil hole surface D stencil hole-o = = V soldering paste volume / stencil thickness = = = 2.24 mm / 0.18 mm = 12.44 mm (12.44 mm * 4 / )0.5 * 0.7 2.79 mm 3 2 (A stencil hole surface * 4/) 0.5 * 0.7 2) 2) The soldered joint form factor for the soldered joint shape recommended by us is 0.7 Important: the maximum diameter of the stencil hole should not exceed 2.8 mm (risk for solder beads forming). For the soldered joint shape and diameter that we recommend, with a stencil thickness of 0.18 mm and a printed circuit board thickness of 1.6 mm, this results in a stencil hole of 2.8 mm (see calculation example). 8 Printed in Germany. Printed on chlorine-free paper. Subject to technical changes. 512755/11/99/CMIP-hom/D.F. |
Price & Availability of SL-SMT35-90
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