DDR3 SDRAM-DIMM socket 240pins DMM12 Series OUTLINE DMM12 series is DDR3 SDRAM-DIMM socket of 240 pins. FEATURES １．Anti-deflection ・By adjusting the expansion rate of mounting board and resin of connector housing, it has superior mountability and deforming connector housing are a little. ２．High density mounting ・High density mounting can be available by reducing the width of connector. ３．Mountability (for automatic mounting machine) ・It adopts no board lock and SMT mounting style to support automatic mounting machine. ４．Easy to repair ・It is easy to repair after soldering process. ５．High-speed transmission ・ By adopting SMT mounting style, it is suitable for high speed transmission. SPECIFICATIONS Rated Voltage AC100V（r.m.s.) Rated Current 0.5A / contact Dielectric Withstand Voltage 250VAC(r.m.s.)/ 1 minute Insulation Resistance 1,000M Ω at 250VDC Contact Resistance 30 m Ω max. MATERIAL/FINISH Item RoHS Compliant Compliant Material / Finish Contact Copper Alloy / Contact Area Au plating, Tail Area Au(Flash) plating Insulator Heat resistant Resin（UL94V-0) / Black Eject lever Heat Resistant Resin (UL94V-0) / Black ◎ Specifications and/or dimenssions in this catalogue are subject to change without notice. Your catalogue checking the latest speifications with our drawings would be highly appreciated. 140310 http://www.ddknet.co.jp DMM12 Series Unit：mm ○ DDR3 SDRAM-DIMM Socket DMM12-S240FA-1N T- FG Lead-free FG： Tail Area：Au (Flash) over Ni Plating Number of pin 240：240 pins Polyamide Tape None：without Polyamide Tape T ：with Polyamide Tape Contact Plating 1：Mating Area：Au （0.76 μ）over Ni Plating Connector Lock N： No board lock ■ Dimensions Key position 1.00 71=71.00 1.00 47=47.00 Pin No.121 0.30 1.00 Pin No.1 1.00 2.50 2.50 Pin No.240 Pin No.120 Center position 12.00 7.00 5.10 （5.00） 141.00 128.60 min. 5.00 （12.00） φ2.05 81.00 0.90 6.20 3.30 max. φ1.58 57.00 2-2.50 min. 2-8.50 min. 2-10.00 min. A φ2.34 3.40 6.70 3-1.50 11.80 （15.75） A Keep Out Area Key position Center position 2-10.50 min. 2-17.50 min. （156.87 Ejector opened) （7.93） Detail AーA Polyamide tape 6.00 50.00 Center position ◎ Specifications and/or dimenssions in this catalogue are subject to change without notice. Your catalogue checking the latest speifications with our drawings would be highly appreciated. http://www.ddknet.co.jp 2 DMM12 Series Unit：mm ○ DDR3 SDRAM-DIMM Socket ■ Recommended P.C.B. Pattern Lay-out 1.00 φ2.45 0.05 8.40 min. φ2.45 0.05 Pin No.121 Y 8.40 min. 1.00 2.50 （ (12.00) φ 2. 45 2.50 ） Y 2.50 （ φ 2. 45 ） 71.00 X X 1.00 (12.00) 2.50 71.00 Pin No.240 φ2.45 0.05 0.10 X Y B Center position Key position 57.00 Center position162.00以上 Key position 57.00 Pin No.240 φ2.45 0.05 0.10 X Y 1.00 B Pin No.1 Keep Out Area Pin No.1 Keep Out Area 47.00 Pin No.121 47.00 Pin No.120 81.00 Pin No.120 81.00 162.00以上 φ2.45 0.05 0.10 X Y 7.00 0.05 Detail B ■ Applicable Memory Module Dimensions Detail B 133.35 0.15 Center line of 133.35 8‒R F 5.00 1.00 71= 71.00 （72Pads） 1.00 47= 47.00 （48Pads） A 0.40 min. (Tie Bar Keep Out Zone) Detail F 5.00 1.00 71= 71.00 （72Pads） COMPONENT AREA Center line of 133.35 12.00 ◎ Specifications and/or dimenssions in this catalogue are subject to change without notice. Your catalogue checking the latest speifications with our drawings would be highly appreciated. http://www.ddknet.co.jp 3 0m a x. G G-503606(2/2) 1.27 0.1 C 0.80 0.05 0.1 A B 1.00 B 1.50 0.10 0.1 D 2.50 A Detail E 0.125 0.075 1.00 47= 47.00 （48Pads） 0.7 DMM12-S240FA-1N 3.80 min. COMPONENT AREA E D 4‒2.80 min. 4‒2.10 0.15 （4.00 min.） 12.00 3.00 0.10 0.10 B Center line of 1.50 0.125 0.075 Detail G 0.20 0.15 2.50 0.20 B 4.00 min. 30.00 17.30 9.50 8‒1.45 min. (Flat Surface) 7.00 0.05 3.70 0.05 0.70 0.03 0.10 X Y 3.70 0.05 0.70 0.03 0.10 X Y 0.05 φ2.45 0.10 X Y