0.4 mm Pitch, 0.6 and 0.8 mm Height, Board-to-Board and Board-to-FPC Connectors
BM20 Series
■Receptacle
Existing products
BM20
2.3mm
2.98mm
2.46mm
10.4mm
10.48mm
A 22.3%
reduction
Existing products
in size!
BM20
Aug.1.2019 Copyright 2019 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
2.98 ∞ 10.4
=About 31.0mm
2
2.3 ∞ 10.48
= About 24.1mm
2
BM20
■Header
Existing products
■Features
1. High density mounting capability
A space saving design that keeps the connector
compact, but still maintains an adequate vacuum
area (no less than 0.7mm wide).
Depth DS: 2.3 mm DP: 1.78 mm
9.32mm
9.4mm
Board occupied area
A 27.1%
reduction
Existing products
in size!
2. Reliable contact performance
Even though the mated height is low, the BM20 still
leads it class in maximum effective mating lengths
for each mating height.
<Effective Mating Length>
Height 0.8 mm: 0.2 mm
Height 0.6 mm: 0.15 mm
The addition of the two point contact system adds
more reliability to the contacts.
BM20
2.46 ∞ 9.32
= About 22.9mm
2
1.78 ∞ 9.4
= About 16.7mm
2
Vaccum pick-up
3. No restrictions to PCB pattern design
for the 0.8 mm height connector
*1
This series utilizes a thin wall to insulate the
bottom surface of the connector and maintains an
effective mating length of 0.2 mm. This removes
any restriction for PCB pattern layout design
under the connector.
Note *1: There are some restrictions for the 0.6
mm height style.
Mating diagram (cross section)
H=0.8
2-point contact
structure
Molded Bottom
surface structure
4. Enhanced mating operations
The structure uses guide ribs to ease the mating
process and offers a self alignment range of up to
0.3 mm. A clear tactile click is used as an
indicator to the user that the mating process was
completed.
5. Drop and shock resistant structure
Dimples were designed into the contacts to
increase their retention force and to absorb the
shock delivered from a drop or other impact.
6. Debris resisting design
When mated, the connector’s design covers the
contacts which help to keep dust and other debris
away from the contacts. The SMT leads are kept
very close to the connector housing which also
helps to prevent shorts caused by debris on the
exposed contacts
H=0.6
Molded Bottom
surface structure
In cases where the application will demand a high level of reliability, such as automotive,
please contact a company representative for further information.
1.78
mm
2013.11②
1
BM20 Series●0.4 mm Pitch, 0.6 and 0.8 mm Height, Board-to-Board and Board-to-FPC Connectors
■Product
Specifications
Rated Current
Ratings
Rated Voltage AC
,
DC 30V
Items
1. Insulation Resistance
2. Withstanding Voltage
3. Contact Resistance
4. Vibration Resistance
5. Humidity Resistance
0.3A
Operating
Temperature Range
Operating Humidity
Range
- 35
∼
85°C
(Note 1)
20
∼
80％
Storage Temperature
Range
Storage Humidity
Range
Conditions
Measured with DC 100 V
Apply AC 100 V for 1 minute
Measured with AC 20 mV, 1 kHz and 1 mA
Frequency 10-55 Hz, half amplitude 0.75 mm, 3
directions for 2 hours
Left at temperature 40±2ç, humidity 90 to 95%,
96 hours
(-55°C: 30 minutes
→
5~35ç: 10 minutes
→
85°C: 30
minutes
→
5~35ç: 10 minutes) 5 cycles
10 mating cycles
Reflow: according to the Recommended Solder Profile
Hand solder: Soldering iron temperature 350°C, no
more than 3 seconds.
- 10
∼
60°C
(Note 2)
40
∼
70%
(Note 2)
Specifications
Minimum of 50 Mø
No flashover or breakdown
Maximum of 100 mø
No electrical discontinuity of 1µs or greater
Contact resistance Maximum of 100 mø
Insulation resistance Minimum of 25 mø
Contact resistance Maximum of 100 mø
Insulation resistance Minimum of 50 mø
Contact Resistance: maximum of 100 mø
Should be no melting of resin parts that affects
its performance
Aug.1.2019 Copyright 2019 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
6. Temperature Cycles
7. Durability
8. Soldering Heat
Resistance
Note 1: Includes temperature rise caused by current flow.
Note 2: The term "storage" here refers to products stored for a long period prior to board mounting and use. The operating
temperature and humidity range covers the non-energized condition of connectors after board mounting and the
temporary storage conditions during transportation, etc.
■Materials
Product
Receptacle
Header
Component
Insulator
Contact
Materials
LCP
Phosphorous bronze
Finish
Black
Gold plating
UL Regulation
UL94V-0
----------------------
■Product
Number Structure
Refer to this page when determining product specifications by model types. Please place orders with part numbers listed in
this catalog. The characteristics and specifications of the product described in this catalog are reference values. Please
make sure to check the latest delivery specifications at the time of product use.
●Receptacle/Header
BM 20 # (
**
) −
*
DS − 0.4 V (51)
❶
❷
❸
❹
❺
❻
❼
½
❾
❶
Series Name: BM
❷
Series No.: 20
❸
Shape Symbols
B: With reinforcing metal fitting
JC: Connector for conductivity testing
❹
Stack height: 0.6 mm, 0.8 mm
❺
No. of Contacts:
❻
Connector Type
DS: Double row receptacle
DP: Double row header
❼
Contact Pitch: 0.4 mm
½
Terminal Shape V: Vertical SMT
❾
Packaging
(51): Embossed tape package (8,000 pieces per reel)
2
BM20 Series●0.4 mm Pitch, 0.6 and 0.8 mm Height, Board-to-Board and Board-to-FPC Connectors
■H=0.6
mm receptacle
Aug.1.2019 Copyright 2019 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
■H=0.8
mm receptacle
BRecommended
PCB layout【H= 0.6 mm】
Resist
coating area
BRecommended
PCB layout【H= 0.8 mm】
3
BM20 Series●0.4 mm Pitch, 0.6 and 0.8 mm Height, Board-to-Board and Board-to-FPC Connectors
BRecommended
metal mask size (Mask thickness 100 µm)
【0.6
mm and 0.8 mm common】
Aug.1.2019 Copyright 2019 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
Part No.
BM20B(0.6)-10DS-0.4V(51)
BM20B(0.6)-20DS-0.4V(51)
BM20B(0.6)-24DS-0.4V(51)
BM20B(0.6)-30DS-0.4V(51)
BM20B(0.6)-34DS-0.4V(51)
BM20B(0.6)-40DS-0.4V(51)
Part No.
BM20B(0.8)-10DS-0.4V(51)
BM20B(0.8)-20DS-0.4V(51)
BM20B(0.8)-24DS-0.4V(51)
BM20B(0.8)-30DS-0.4V(51)
BM20B(0.8)-34DS-0.4V(51)
BM20B(0.8)-40DS-0.4V(51)
BM20B(0.8)-44DS-0.4V(51)
BM20B(0.8)-50DS-0.4V(51)
HRS No.
CL0684-9308-8-51
CL0684-9309-0-51
CL0684-9310-0-51
Under planning
Under planning
CL0684-9313-8-51
HRS No.
CL0684-9008-4-51
CL0684-9009-7-51
CL0684-9010-6-51
CL0684-9011-9-51
CL0684-9020-0-51
CL0684-9012-1-51
Under planning
Under planning
No. of Contacts
10
20
24
30
34
40
No. of Contacts
10
20
24
30
34
40
44
50
A
4.48
6.48
7.28
8.48
9.28
10.48
A
4.48
6.48
7.28
8.48
9.28
10.48
11.28
12.48
B
1.6
3.6
4.4
5.6
6.4
7.6
B
1.6
3.6
4.4
5.6
6.4
7.6
8.4
9.6
C
4.02
6.02
6.82
8.02
8.82
10.02
C
4.02
6.02
6.82
8.02
8.82
10.02
10.82
12.02
Unit: mm
D
4.06
6.06
6.86
8.06
8.86
10.06
Note 1: This product is sold by full reel quantities of 8,000 pieces per reel. Please place orders in full reel quantities.
Note 2: This connector is NOT polarized.
4
BM20 Series●0.4 mm Pitch, 0.6 and 0.8 mm Height, Board-to-Board and Board-to-FPC Connectors
■H=0.6
mm header
Aug.1.2019 Copyright 2019 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
■H=0.8
mm header
0.4
E
F
0.4
P=0.4
1.78
0.15
BRecommended
PCB layout【0.6 mm and 0.8 mm common】
BRecommended
metal mask size (Mask thickness 100 μm)【0.6 mm and 0.8 mm common】
0.66
5
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