BM28 Series●0.35mm pitch, 0.6mm height, Board to Board or Board to FPC Connectors with Rated Current Up to 5A
2
BM 28 B 0.6 − * DS / 2 − 0.35 V
(
**
)
❶❷ ❸ ❹❺ ❻ ❼❽❾
■
Product Specifi cations
Ratings
Rated
current
Power contact : 5A
Signal contact : 40 contacts max. 0.3A
44 contacts min. 0.2A (Note 1)
Operating
temperature range
-40 to 85°C (Note 2)
Storage
temperature range
-10 to 60ç (Note 3)
Rated
voltage
30V AC/DC
Operating
humidity range
20 to 80%
Storage
humidity range
40 to 70% (Note 3)
Items Specifi cations Conditions
1. Contact resistance
Signal contact : 100mø max.
Power contact : 30mø max.
Measured at 20mV AC, 1kHz, and 1mA
2. Insulation resistance 1000Mø min. Measured at 100V DC
3. Withstanding voltage No fl ashover or dielectric breakdown 150V AC for 1 minute
4. Durability
Contact resistance : Signal contact : 100mø max.
Power contact : 30mø max.
10 mating cycles
5. Vibration No electrical discontinuity for more than 1µs.
Frequency : 10 to 55Hz ; half amplitude of 0.75mm,
10 cycles in each of 3 axis directions for 5 minutes/cycle
6. Shock resistance
No electrical discontinuity of 1µs or more.
Acceleration : 450m/s
2
, duration : 11ms, 3-axis half-
sine wave in both directions, 3 cycles for each
7. Humidity
Contact resistance : Signal contact : 100mø max.
Power contact : 30mø max.
Insulation resistance : 100Mø min.
96 hours at a temperature of 40 ±2
ç
and
a humidity range from 90 to 95%
8. Temperature cycle
Contact resistance : Signal contact : 100mø max.
Power contact : 30mø max.
Insulation resistance : 100Mø min.
-55
±3
ç : 30 minutes
➝
85
±2
ç : 30 minutes,
5 cycles
9. Solder heat
resistance
No dissolution or melting of the resin that will
affect the performance.
Refl ow : with recommended temperature profi le ;
Hand soldering at soldering iron temperature of
350
ç
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 fl 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.
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Materials / Finish
Product Part Materials Finish UL Regulation
Receptacle
Header
Insulator LCP Black UL94V-0
Signal contact Copper alloy Gold plated ----------
Power contact Copper alloy Gold plated ----------
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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
❼
Contact Pitch : 0.35mm
❽
Termination type
V : Straight SMT
❾
Gold plated specifi cation and packaging status
(51) : Gold plate thickness 0.05µm
Embossed tape packaging (20,000 pcs/reel)
(53) : Gold plate thickness 0.05µm
Embossed tape packaging (1,000 pcs/reel)
❶
Series Name : BM
❷
Series No. : 28
❸
Stacking height : 0.6mm
❹
Number of Signal Contacts : 6, 10, 16, 20, 24, 30, 34, 40, 44, 50, 60
❺
Connector type
DS : Receptacle
DP : Header
❻
Number of Power Contacts : 2
Aug.1.2018 Copyright 2018 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
