Ultra-small, power/signal contact design for Board-to-Board/FPC-to-Board providing 3A max current
BM29 Series
20% reduction in size compared with alternate Hirose’s products
3.16mm
BM29
6 contacts
1.5mm
Nov.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
3.55mm
Prior generation
product :
BM23
6 contacts
1.98mm
The narrower and shorter, yet flexible design
allows tight installation.
■Features
Fig.1
Combination Power / Signal contact design
1. Space-saving design
Compact and flexible design ideal for mobile
devices. (Fig.1)
・Pitch : 0.35mm, Depth : 1.5mm, Stacking height : 0.6mm
2. Equipped with power contacts capable of
handling up to 3A current. (Fig.2)
・Rated current : 3A (power contact), 0.3A (signal
contact)
3. The proprietary metal guide prevents the
connector from being damaged against
offset mating. (Fig.3)
Fig.2
4. A tactile click ensures secure mating. (Fig.4)
Contacts mating is designed to reduce
connector damage even if mated incorrectly.
5. 2-points of contact offer high contact
reliability.
Metal
guides
Fig.3
The contact is
designed to
provide a tactile
click.
Click!
Click!
Locking
groove
The load
plummets.
A tactile
click
Metal locks
Fig.4
In cases where the application will demand a high level of reliability, such as automotive,
please contact a company representative for further information.
2020.2②
1
BM29 Series●Ultra-small, power/signal contact design for Board-to-Board/FPC-to-Board providing 3A max current
■Product Specifications
Rated current
Power contact : 3A
Signal contact : 0.3A
Rated voltage
30V AC/DC
Items
Nov.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
1. Insulation resistance
Operation
Storage
-40 to 85°C (Note 1)
temperature range
temperature range
Operation
90% RH or below
Storage
humidity range
(Note 3)
humidity range
Specifications
Minimum of 1000Mø
Measured at 100V DC
150V AC for 1 minute
8. Soldering heat
resistance
90% RH or below
(Notes 2 and 3)
Conditions
2. Withstanding voltage There shall be no flashover or dielectric breakdown.
Signal contact : 100mø max.
3. Contact resistance
Power contact : 30mø max.
There shall be no instantaneous power failure
4. Vibration resistance
lasting for a minimum of 1µs.
Contact resistance : Signal contact : 100mø max.
5. Moisture resistance
Power contact : 30mø max.
Insulation resistance : 100Mø min.
Contact resistance : Signal contact : 100mø max.
Power contact : 30mø max.
6. Temperature cycle
Insulation resistance : 100Mø min.
7. Mating durability
-10 to 60ç (Note 2)
Measured at 20mV AC, 1kHz, and 1mA
Frequency : 10 to 55 Hz, Half amplitude : 0.75mm, in
3 axis directions for 10 cycles each (5 minutes/cycle)
Temperature : 40±2ç, Humidity : 90 to 95%,
left as it is for 96 hours
(-55ç for 30 minutes ➝ 5 to 35°C for 10 minutes ➝
85°C for 30 minutes ➝ 5 to 35°C for 10 minutes)
in 5 cycles
Contact resistance : 100mø max.
Mating times : 10 times
There shall be no dissolution of the resin part
affecting the performance.
Reflow : according to the Recommended temperature profile
Hand soldering : temperature of soldering iron at 350°C for
within 3 seconds
Note 1 : Includes temperature rise caused by current flow.
Note 2 : 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.
Note 3 : Avoid a high humidity environment.
■Materials / Finish
Product
Receptacle
Header
Part
Material
Finish
Insulator
LCP
Black
Phosphor bronze
Gold plated
Signal contact
Power contact
UL specification
UL94V-0
-------------------
■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
BM 29B 0.6 − * DS/ 2 − 0.35 V (**)
❹
❺
❻
❼
❽
Series Name : BM
Connector type DS : Receptacle
Series No. : 29B
Number of Power Contacts : 2
Stacking height
Contact Pitch : 0.35mm
Number of Signal Contacts : 2, 4, 6, 24
Terminal shape V : Straight SMT
Packaging
(51) : Emboss tape packaging
(20,000 pcs/reel)
(53) : Emboss tape packaging
(1,000 pcs/reel)
●Header
BM 29B − * DP/ 2 − 0.35 V (**)
❹
❻
❼
❽
Series Name : BM
Contact Pitch : 0.35mm
Series No. : 29B
Terminal shape V : Straight SMT
Number of Signal Contacts : 2, 4, 6, 24
Packaging
(51) : Emboss tape packaging (20,000 pcs/reel)
(53) : Emboss tape packaging (1,000 pcs/reel)
Connector type DP : Header
Number of Power Contacts : 2
2
❺
BM29 Series●Ultra-small, power/signal contact design for Board-to-Board/FPC-to-Board providing 3A max current
■Receptacle
A
B
C
1.5
P=0.35
D±0.02
E±0.02
C±0.02
D
E
Insulation area
0
0
0.98-0.05
1.18-0.05
0.6
P=0.35±0.02
+0.
05
1.82 0
Recommended metal mask thickness : 100µm, Aperture ratio : 100%
0.3±0.02
0.46±0.02
0.18±0.02
Part No.
Unit:mm
HRS No.
BM29B0.6-2DS/2-0.35V(**)
BM29B0.6-4DS/2-0.35V(**)
BM29B0.6-6DS/2-0.35V(**)
BM29B0.6-24DS/2-0.35V(**)
673-7001-0 **
673-7063-0 **
673-7003-0 **
673-7053-0 **
No. of Contacts
Signal Power
2
2
4
2
6
2
24
2
A
B
C
D
E
2.46
2.81
3.16
6.31
0.7
1.09
1.44
4.59
−
0.35
0.7
3.85
2.08
2.43
2.78
5.93
0.98
1.33
1.68
4.83
Note 1 : Please place your orders for full reel quantities of embossed tape packages.
Note 2 : This connector has no polarity.
■Header
F
G
H
1.4
P=0.35
0.19
0.41
0.12
Recommended PCB pattern diagram
(0.53)
P=0.35±0.02
G±0.02
H±0.02
0.55
+0.
05
1.61 0
Nov.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
Recommended PCB pattern diagram
Recommended metal mask thickness : 100µm, Aperture ratio : 80%
0.25±0.02
0.18±0.02
Part No.
BM29B-2DP/2-0.35V(**)
BM29B-4DP/2-0.35V(**)
BM29B-6DP/2-0.35V(**)
BM29B-24DP/2-0.35V(**)
Unit:mm
HRS No.
673-7002-0 **
673-7064-0 **
673-7004-0 **
673-7052-0 **
No. of Contacts
Signal
Power
2
2
4
2
6
2
24
2
F
G
H
1.81
2.16
2.51
5.66
0.77
1.12
1.47
4.62
0.35
0.7
3.85
−
Note 1 : Please place your orders for full reel quantities of embossed tape packages.
Note 2 : This connector has no polarity.
3
BM29 Series●Ultra-small, power/signal contact design for Board-to-Board/FPC-to-Board providing 3A max current
Embossed Tape Dimensions (conforms to JIS C 0806)
2±0.5
Ø1
0.8
1±
12
M±0.3
12
0°
L±0.1
Ø1.5 feed hole
diameter
Ø380±2
Ø80±1
K-K
3±
0 .2
Product label
Ø2
K
0°
4±0.1
1.75±0.1
2±0.1
0
4±0.1
●Reel dimensions
Ø1.5 +0.1
●Receptacle
Nov.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
N±0.5
Q±1
K
0.2±0.1
J
J
J-J
0.74±0.15
Unit:mm
Part No.
HRS No.
BM29B0.6-2DS/2-0.35V(**)
BM29B0.6-4DS/2-0.35V(**)
BM29B0.6-6DS/2-0.35V(**)
BM29B0.6-24DS/2-0.35V(**)
673-7001-0 **
673-7063-0 **
673-7003-0 **
673-7053-0 **
L
M
N
Q
5.5
5.5
5.5
7.5
12
12
12
16
13.5
13.5
13.5
17.4
17.5
17.5
17.5
21.4
●Reel dimensions
2±0.5
1±
0.2
Ø1
0.8
12
0°
0°
12
T±0.1
U±0.3
Ø1.5 feed hole
diameter
Ø380±2
Ø80±1
Product label
M-M
Ø2
+0.1
0
M
3±
4±0.1
Ø1.5
2±0.1
4±0.1
1.75±0.1
●Header
No. of Contacts
Signal Power
2
2
4
2
6
2
24
2
W±0.5
X±1
M
L
L-L
L
0.2±0.1
0.55±0.15
Unit:mm
Part No.
BM29B-2DP/2-0.35V(**)
BM29B-4DP/2-0.35V(**)
BM29B-6DP/2-0.35V(**)
BM29B-24DP/2-0.35V(**)
4
HRS No.
673-7002-0 **
673-7064-0 **
673-7004-0 **
673-7052-0 **
No. of Contacts
Signal Power
2
2
4
2
6
2
24
2
T
U
W
X
5.5
5.5
5.5
7.5
12
12
12
16
13.5
13.5
13.5
17.4
17.5
17.5
17.5
21.4
BM29 Series●Ultra-small, power/signal contact design for Board-to-Board/FPC-to-Board providing 3A max current
Precautions
1.Recommended
temperature profile
MAX 250℃
250
220℃
Temperature
( ℃)
220
200
180
180℃
150℃
150
Nov.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
100
50
25
25℃
(60 seconds)
0
90 to 120 seconds
Preheating time
(60 seconds)
Soldering time
Start
Time (seconds)
[Conditions]
1. Peak temperature
2. Heating unit
3. Preheating unit
4. Number of times
: 250ç
: No less than 220ç for no more than 60 seconds
: 150 to 180ç for 90 to 120 seconds
: No more than 2 times
Note 1 : The temperature is the surface temperature of the PCB in the vicinity of the connector
lead part.
Note 2 : When you use nitrogen reflow, please mount the product with the oxygen concentration
at a minimum of 1,000 [ppm].
Please contact us if the concentration is below 1,000 [ppm].
2. Recommended hand
soldering conditions
Soldering iron temperature : 340 ± 10°C,
Soldering time : within 3 seconds
3. Recommended screen
thickness/aperture ratio
(pattern area ratio)
Thickness : 0.1mm
Aperture ratio : 100% on the DS side ; 80% on the DP side
4. Warpage of the PCB
5. Cleaning
6. Notes
A maximum of 0.02mm at the center part of the connector based on both ends of the connector.
Not recommended. If you clean this product, please evaluate the performance before using it.
(Cleaning may cause a change in the mating/unmating property and its resistance to
environment)
Care should be taken that mating/unmating operation when the product is not mounted on the
PCB could cause damage or deformation, etc. of the contact.
Avoid supporting the PCB only by connectors, and support it by other means than connectors.
Care should be taken that excessive prying mating/unmating could cause damage.
During hand soldering, do not apply flux which will cause flux oozing on connector.
This product may differ in hue due to production lot variability, but it doesn’t have any
influence on the performance.
Please refer to the next page for the precautions for mating/unmating.
Considering the possibility of disengagement due to the counterforce caused by the drop, impact
and routing of FPC, fix the mated state by the use of housings and cushion materials, etc.
Caution! Do not use the connector in non-recommended conditions (i.e., rated current, rated
voltage, PCB design and operating environment, etc.). Such usage could lead to material
outgassing, ignition, or short-circuit, etc.
Refer to the specifications and the guidelines for board pattern dimensions, board cautions,
and connector treatment.
Pleasae contact Hirose if using the connector under conditions other than those described in
the specifications and the guidelines is being considered.
5
BM29 Series●Ultra-small, power/signal contact design for Board-to-Board/FPC-to-Board providing 3A max current
●Notes when mating connector
Be sure to mate this product manually.
Mating procedure
1)Align the connector at the guide.
Nov.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
A guide rib (tapered metal) is provided on the outer wall of the connector for mating support.
Align the connector to this guide rib.
2)The connector enters automatically.
The connector slightly lowers when aligned correctly.
Find the guide by moving the connector in the X and Y directions.
Finding
Finding
The connector slightly lowers when aligned.
3)Once aligned, mate the connector fully.
The connector becomes parallel when aligned. You cannot move it laterally and longitudinally.
4)Confirm the mated connector.
If incorrectly mated, remove, and mate it again.
6
BM29 Series●Ultra-small, power/signal contact design for Board-to-Board/FPC-to-Board providing 3A max current
●Notes when unmating connector
1)Vertical direction
Nov.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
When removing the connector, remove it vertically. Number of contacts, FPC thickness, or other factors may make the
vertical removal difficult.
OK
OK
2)Longitudinal removal
Remove the connector in the pitch direction in a slanted manner.
OK
3)Lateral removal
Pull out the tip end of the FPC in the vertical direction.
Applying a large force horizontally could deform the contacts.
OK
NG
4)Evaluate the mated state for thin FPCs.
Connector breakage or peeling off at soldering area could occur if the FPC does not have enough rigidity,
please check the action in advance on the same type of FPC.
Thin FPC
7
Nov.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
BM29 Series●Ultra-small, power/signal contact design for Board-to-Board/FPC-to-Board providing 3A max current
USA:
HIROSE ELECTRIC (U.S.A.), INC. HEADQUARTERS CHICAGO OFFICE
2300 Warrenville Road, Suite 150,
Downers Grove, IL 60515
Phone : +1-630-282-6700
http://www.hirose.com/us/
USA:
HIROSE ELECTRIC (U.S.A.), INC. SAN JOSE OFFICE
2841 Junction Ave, Suite 200
San Jose, CA. 95134
Phone : +1-408-253-9640
Fax : +1-408-253-9641
http://www.hirose.com/us/
USA:
HIROSE ELECTRIC (U.S.A.), INC. DETROIT OFFICE (AUTOMOTIVE)
17197 N. Laurel Park Drive, Suite 253,
Livonia, MI 48152
Phone : +1-734-542-9963
Fax : +1-734-542-9964
http://www.hirose.com/us/
USA:
HIROSE ELECTRIC (U.S.A.), INC. BOSTON OFFICE
300 Brickstone Square Suite 201,
Andover, MA 01810
Phone : +1-978-662-5255
THE NETHERLANDS:
HIROSE ELECTRIC EUROPE B.V.
Hogehillweg #8 1101 CC Amsterdam Z-O
Phone : +31-20-6557460
Fax : +31-20-6557469
http://www.hirose.com/eu/
GERMANY:
HIROSE ELECTRIC EUROPE B.V. GERMAN BRANCH
Schoenbergstr. 20, 73760 ostfildern
Phone : +49-711-456002-1
Fax : +49-711-456002-299
http://www.hirose.com/eu/
GERMANY:
HIROSE ELECTRIC EUROPE B.V. NUREMBERG OFFICE
Neumeyerstrasse 22-26, 90411 Nurnberg
Phone : +49-911 32 68 89 63
Fax : +49-911 32 68 89 69
http://www.hirose.com/eu/
GERMANY:
HIROSE ELECTRIC EUROPE B.V. HANOVER OFFICE
Bayernstr. 3, Haus C 30855 Langenhagen, Germany
Phone : +49-511 97 82 61 30
Fax : +49-511 97 82 61 35
http://www.hirose.com/eu/
FRANCE:
HIROSE ELECTRIC EUROPE B.V. PARIS OFFICE
130 Avenue Joseph Kessel, Bat E, 78960
Voisins le Bretonneux, France
Phone : +33-1-85764886
Fax : +33-1-85764823
http://www.hirose.com/eu/
UNITED KINGDOM:
HIROSE ELECTRIC EUROPE BV (UK BRANCH)
4 Newton Court, Kelvin Drive, Knowlhill,
Milton Keynes, MK5 8NH
Phone : +44-1908 202050
Fax : +44-1908 202058
http://www.hirose.com/eu/
CHINA:
HIROSE ELECTRIC (CHINA) CO., LTD. (SHANGHAI, HEADQUARTERS)
18, Enterprise Center Tower 2, 209# Gong He
Road, Jing’an District, Shanghai, CHINA 200070
Phone : +86-21-6391-3355
Fax : +86-21-6391-3335
http://www.hirose.com/cn/
CHINA:
HIROSE ELECTRIC (CHINA) CO.,LTD. BEIJING BRANCH
A1001, Ocean International Center, Building 56# East 4th
Ring Middle Road, ChaoYang District, Beijing, 100025
Phone : +86-10-5165-9332
Fax : +86-10-5908-1381
http://www.hirose.com/cn/
CHINA:
HIROSE ELECTRIC (CHINA) CO., LTD. SHENZHEN BRANCH
Room 09-13, 19/F, Office Tower Shun Hing Square, Di Wang Commercial Centre,
5002 Shen Nan Dong Road, Shenzhen City, Guangdong Province, 518008
Phone : +86-755-8207-0851
Fax : +86-755-8207-0873
http://www.hirose.com/cn/
HONG KONG:
HIROSE ELECTRIC HONGKONG TRADING CO., LTD.
Room 1001, West Wing, Tsim Sha Tsui Centre, 66
Mody Road, Tsim Sha Tsui East, Kowloon, Hong Kong
Phone : +852-2803-5338
Fax : +852-2591-6560
http://www.hirose.com/hk/
TAIWAN:
HIROSE ELECTRIC TAIWAN CO., LTD.
103 8F, No.87, Zhengzhou Rd., Taipei
Phone : +886-2-2555-7377
Fax : +886-2-2555-7355
http://www.hirose.com/tw/
KOREA:
HIROSE KOREA CO.,LTD.
143, Gongdan 1-daero, Siheung-si,
Gyeonggi-do, 15084, Korea
Phone : +82-31-496-7000
Fax : +82-31-496-7100
http://www.hirose.co.kr/
SINGAPORE:
INDIA:
HIROSE ELECTRIC SINGAPORE PTE. LTD. DELHI LIAISON OFFICE
HIROSE ELECTRIC SINGAPORE PTE. LTD.
03, Anson Road, #20-01, Springleaf Tower, Office NO.552, Regus-Green Boulevard, Level5, Tower C,
Sec62, Plot B-9A, Block B, Noida, 201301, Uttar Pradesh, India
Singapore 079909
Phone : +91-12-660-8018
Phone : +65-6324-6113
Fax : +91-120-4804949
Fax : +65-6324-6123
http://www.hirose.com/sg/
http://www.hirose.com/sg/
INDIA:
HIROSE ELECTRIC SINGAPORE PTE. LTD. BANGALORE LIAISON OFFICE
Unit No-403, 4th Floor, No-84, Barton Centre, Mahatma
Gandhi (MG) Road, Bangalore 560 001, Karnataka, India
Phone : +91-80-4120 1907
Fax : +91-80-4120 9908
http://www.hirose.com/sg/
MALAYSIA:
THAILAND:
PENANG REPRESENTATIVE OFFICE
BANGKOK OFFICE (REPRESENTATIVE OFFICE)
73-3-1, Ideal@The One, Jalan Mahsuri, Bayan Unit 4703, 47th FL., 1 Empire Tower, South Sathorn
Road, Yannawa, Sathorn, Bangkok 10120 Thailand
Lepas Penang, 11950, Malaysia
Phone : +66-2-686-1255
Phone : +604-648-5536
Fax : +66-2-686-3433
http://www.hirose.com/sg/
http://www.hirose.com/sg/
®
8
2-6-3,Nakagawa Chuoh,Tsuzuki-Ku,Yokohama-Shi 224-8540,JAPAN
TEL: +81-45-620-3526 Fax: +81-45-591-3726
http://www.hirose.com
http://www.hirose-connectors.com
The characteristics and the specifications contained herein are for reference purpose. Please refer to the latest customer drawings prior to use.
The contents of this catalog are current as of date of 02/2020. Contents are subject to change without notice for the purpose of improvements.