microSD Card Connectors DM3 Series Features DM3D (Push -Pull, manual, without Common to the entire Series ejection mechanism) 1. Extremely small in size Partial card insertion hold Small external dimensions and the above-the-board height make the connectors the smallest on the market. Card will not fall-out even when it is not fully inserted. Full insertion and electrical / mechanical connection is confirmed 2. Reverse card insertion protection with a distinct tactile feel. Unique card slot design (patented) protects the connector Accessible termination areas from damage when the card is attempted to be inserted in An inner lead system that can be reworked is used in this design. reverse, allowing it to re-inserted correctly. Contact solder terminations may be inspected and reworked. 3. Effective ground and shield configuration 4-connection points of the metal cover to the printed circuit board assures secure connection of the ground circuit and provides EMI protection. 4. Rigid and strong construction Despite its small size, high-strengths materials used in the connectors produced a strong and rigid structure. 5. Card detection switch Card insertion-ejection Series Image Page The card detection switch is Normally Open DM3AT and DM3BT (Push - Push, with DM3AT 2~4 ejection mechanism) Card fall-out prevention Built-in card tray and the unique push insertion-push ejection Push-Push mechanism (patented) prevent accidental card ejection or fall- out. Despite its small size the connectors will eject the card to a distance of 4.0mm, allowing easy hold and removal of the card. DM3BT 5~6 Exposed termination leads Easy inspection and rework of the solder termination joints. DM3CS (Hinge, Push-Pull, manual, without ejection mechanism) Hinge-manual Simple and reliable card insertion insertion/ DM3CS 7~8 Hinged metal cover provides location and guides the card ejection during the insertion / removal. Closing of the cover confirms the electrical and mechanical connection with a tactile click sensation. Reliable contact with the card contact pads Push-Pull Unique contact design and card slide action will clean the manual insertion/ DM3D 9~10 contact areas of the card. ejection Accessible termination areas Contact solder terminations may be inspected and reworked. 2017.1 1 Dec.1.2018 Copyright 2018 HIROSE ELECTRIC CO., LTD. All Rights Reserved.DM3 SeriesmicroSD Card Connectors Product Specifications (DM3 Series) Current rating : 0.5A Operating temperature range : -25 to +85 (Note 1) Operating humidity range : RH 95% max. Ratings Voltage rating : 125V AC Storage temperature range : -40 to +85 (Note 2) (No condensation) Item Specification Conditions Measure at 500V DC 1. Insulation resistance 1000M min. (Initial value) 500 V AC / 1 minute 2. Withstanding voltage No flashover or insulation breakdown 3. Contact resistance 100m max. (Initial value) 1mA No electrical discontinuity of 100 ns or longer Frequency : 10 to 55Hz, single amplitude of 0.75mm, 4. Vibration No damage, cracks or parts dislocation. 3 directions for 2 hours Contact resistance : 40m max. (change from initial value) 5. Humidity Insulation resistance : 100M min. 96 hours at of 40 2, and humidity of 90 to 95% No damage, cracks or parts dislocation. Contact resistance : 40m max. (change from initial value) -55 5 to 35 85 5 to 35 6. Temperature cycle Insulation resistance : 100M min. Times : 30 min. 5 min. 30 min. 5 min. No damage, cracks or parts dislocation. 5 cycles 10,000 cycles, 400 to 600 cycles per hour (DM3AT, DM3B) Contact resistance : 40m max. (change from initial value) 7. Durability 5,000 cycles, 400 to 600 cycles per hour (DM3C, DM3D) 8. Resistance to Reflow : At the recommended temperature profile No deformation of components affecting performance. soldering heat Manual soldering : 350 for 3 seconds Note 1 : Includes temperature rise caused by current flow. Note 2 : The termstorag refers to products stored for long period prior to mounting and use. Materials / Finish DM3AT, DM3BT Part Material Finish Remarks Insulator LCP Color : Black UL94V-0 Contact area : Gold plated Contacts Copper alloy ------------------- Lead area : Gold plated Stainless steel (DM3AT) Guide cover Lead area : Gold plated ------------------- Copper alloy (DM3BT) Stainless steel (DM3AT, DM3BT) ------------------- Other components ------------------- Piano wire (DM3BT) Nickel plated DM3CS, DM3D Part Material Finish Remarks Insulator LCP Color : Black UL94V-0 Contact area : Gold plated Contacts Copper alloy ------------------- Lead area : Gold plated ------------------- (DM3CS) Guide cover Stainless steel ------------------- Tin plated (DM3D) Product Number Structure Refer to the chart below when determining the product specifications from the product number. Please select from the product numbers listed in this catalog when placing orders. DM3 AT SF PEJM5 1 2 3 4 1 Series name : DM3 3 Termination type : SF Right-angle SMT(Standard) DSF Right-angle SMT(Reverse) 2 Connector type : AT Push-Push (ejection mechanism), Top board mounting (Standard) BT Push-Push (ejection mechanism), Bottom board mounting (Reverse) Card ejection code : PEJM5, PEJS 4 CS Hinge, Push-Pull (no ejection mechanism), Top board mounting (Standard) (Push insert/push eject) D Push-Pull (no ejection mechanism), Top board mounting (Standard) None : Manual card Number of contacts : 8 insertion/ejection 2 Dec.1.2018 Copyright 2018 HIROSE ELECTRIC CO., LTD. All Rights Reserved.