HRS DM3BT-DSF-PEJS
Product Overview
The DM3 Series microSD Card Connectors are designed for extremely small size and high reliability in demanding applications. These connectors feature a unique reverse card insertion protection mechanism, ensuring durability and correct card re-insertion. An effective ground and shield configuration with 4-connection points to the PCB provides secure grounding and EMI protection. Constructed with high-strength materials, the DM3 Series offers a rigid and strong structure despite its compact dimensions. Available in Push-Push (with ejection mechanism), Hinge Push-Pull (manual, no ejection), and Push-Pull (manual, no ejection) variants, these connectors cater to diverse integration needs. They are ideal for applications requiring compact, robust, and user-friendly memory card interfaces.
Product Attributes
- Brand: HIROSE ELECTRIC CO., LTD.
- Series: DM3 Series
- Certifications: UL94V-0 (Insulator)
- Material - Insulator: LCP
- Material - Contacts: Copper alloy
- Material - Guide cover: Stainless steel
- Material - Other components: Copper alloy, Stainless steel, Piano wire
- Finish - Contacts: Gold plated (Contact area), Gold plated (Lead area)
- Finish - Lead area: Nickel plated (DM3AT, DM3BT), Tin plated (DM3CS, DM3D)
- Color: Black (Insulator)
Technical Specifications
| Item | Specification | Conditions | Note |
|---|---|---|---|
| Ratings | Current rating: 0.5A Voltage rating: 125V AC | ||
| Operating temperature range | -25C to +85C | Includes temperature rise caused by current flow. | |
| Storage temperature range | -40C to +85C | Refers to products stored for long periods prior to mounting and use. | |
| Operating humidity range | RH 95% max. (No condensation) | ||
| Insulation resistance | 1000M min. (Initial value) | Measure at 500V DC | |
| Withstanding voltage | 500 V AC / 1 minute | 1mA | No flashover or insulation breakdown |
| Contact resistance | 40m max. (change from initial value) | ||
| Vibration | 10 to 55Hz, single amplitude of 0.75mm, 3 directions for 2 hours | No damage, cracks or parts dislocation. | |
| Humidity | 96 hours at 40 2C, and humidity of 90 to 95% | No damage, cracks or parts dislocation. | |
| Temperature cycle | -55C 5 to 35C 85C 5 to 35C Times: 30 min. 5 min. 30 min. 5 min. 5 cycles | No deformation of components affecting performance. | |
| Durability | 10,000 cycles (DM3AT, DM3B) 5,000 cycles (DM3C, DM3D) | 400 to 600 cycles per hour | |
| Resistance to soldering heat | Reflow: At the recommended temperature profile Manual soldering: 350C for 3 seconds | ||
| Models | DM3AT, DM3BT, DM3CS, DM3D | Push-Push (ejection mechanism), Top/Bottom board mounting Hinge, Push-Pull (no ejection mechanism), Top board mounting Push-Pull (no ejection mechanism), Top board mounting | |
| Termination Type | SF (Right-angle SMT - Standard) DSF (Right-angle SMT - Reverse) | ||
| Card ejection | PEJM5, PEJS (Push insert/push eject) None (Manual card insertion/ejection) | ||
| Number of contacts | 8 |
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