0.35mm pitch, 0.6mm height, Board to Board or Board to FPC Connectors with Rated Current Up to 5A BM28 Series Conventional article (P=0.35mm, 20pos.) BM28-10pos. (+2pos. for power) Power lines are concentrated into 2 power contacts instead of conventional multiple signal contacts. Features Usage specification 1. Rated current 5A Earphone jack 2 Power contacts up to 5A with 0.2A contacts for USB signal, space-saving connector. NFC Camera 2 Highly reliable contact design Battery 2-point contact design for both power & signal ensures a highly reliable contact 3 Good mating operation Guide ribs ensure 0.3mm self-alignment. Clear tactile click prevents partial mating, increases mating LCD operability. 4 Supports USB3.1 Gen.2 (10Gbps) transmission Main board Signal connector supports USB3.1 Gen.2 transmission Interface connector signals. Usage Devices designed to be thinner and smaller, such as mobile phone, wearable device, tablet PC. Contact design Environmental * Halogen-free As defined by IEC 61249-2-21 Power contact : Br : 900ppm max, Cl : 900ppm max 2-point contact Br+Cl :1500ppm max Signal contact : 2-point contact In cases where the application will demand a high level of reliability, such as automotive, 1 2019.7 please contact a company representative for further information.BM28 Series0.35mm pitch, 0.6mm height, Board to Board or Board to FPC Connectors with Rated Current Up to 5A Product Speci cations Power contact : 5A Rated Operating Storage Signal contact : 40 contacts and under : 0.3A -40 to 85C (Note 2) -10 to 60 (Note 3) current temperature range temperature range 44 contacts and more : 0.2A (Note 1) Ratings Rated Operating Storage 30V AC/DC 20 to 80% 40 to 70% (Note 3) voltage humidity range humidity range Items Speci cations Conditions Signal contact : 100m max. 1. Contact resistance Measured at 20mV AC, 1kHz, and 1mA Power contact : 30m max. 2. Insulation resistance 1000M min. Measured at 100V DC 3. Withstanding voltage No ashover or dielectric breakdown 150V AC for 1 minute Contact resistance : Signal contact : 100m max. 4. Durability 10 mating cycles Power contact : 30m max. Frequency : 10 to 55Hz half amplitude of 0.75mm, 5. Vibration No electrical discontinuity for more than 1s. 10 cycles in each of 3 axis directions for 5 minutes/cycle 2 Acceleration : 450m/s , duration : 11ms, 3-axis half- 6. Shock resistance No electrical discontinuity of 1s or more. sine wave in both directions, 3 cycles for each Contact resistance : Signal contact : 100m max. 96 hours at a temperature of 40 2 and 7. Humidity Power contact : 30m max. a humidity range from 90 to 95% Insulation resistance : 100M min. Contact resistance : Signal contact : 100m max. -553 : 30 minutes 852 : 30 minutes, 8. Temperature cycle Power contact : 30m max. 5 cycles Insulation resistance : 100M min. Re ow : with recommended temperature pro le 9. Solder heat No dissolution or melting of the resin that will Hand soldering at soldering iron temperature of resistance affect the performance. 350 for 3 seconds max. Note 1 : The total current capacity for connectors with 50 or more signal contacts is 10A for all contacts. (Signal contact only) Note 2 : Includes temperature rise caused by current ow. Note 3 : Storage refers to long-term-storage of unused items before they are mounted on the PCB. Operating temperature / humidity range applies to the state of temporary storage such as non-powered after mounting on the PCB, and during transportation, etc. Materials / Finish Product Part Materials Finish UL Regulation Insulator LCP Black UL94V-0 Receptacle Signal contact Copper alloy Gold plated ---------- Header Power contact Copper alloy Gold plated ---------- 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. Receptacle / Header ( ) BM 28 B 0.6 * DS / 2 0.35 V ** Series Name : BM Number of Power Contacts : 2 Series No. : 28 Contact Pitch : 0.35mm Termination type Stacking height : 0.6mm V : Straight SMT Number of Signal Contacts : Gold plated speci cation and packaging status 6, 10, 16, 18, 20, 24, 30, 34, 36, 40, 44, 50, 58, 60 (51) : Gold plate thickness 0.05m Connector type Embossed tape packaging (20,000 pcs/reel) DS : Receptacle (53) : Gold plate thickness 0.05m DP : Header Embossed tape packaging (1,000 pcs/reel) 2