±0.4mm Floating Amount, Small Size with 3.8mm Width,
125℃ Head Resistance
Automotive Board to Board Connector BM54 Series
The BM54 series is a board-to-board connector that combines floating functionality and compact size to meet automotive specifications. It has a generous floating amount of ±0.4mm in the XY direction, yet is compact with 3.8mm width. Floating also improves assembly work efficiency by absorbing board misalignment.
Furthermore, its heat resistance of 125°C, which is required for in-vehicle equipment, makes it suitable for a wide range of applications including consumer and industrial equipment as well as front cameras, rear/side cameras, millimeter wave radar, and LiDAR, which are key components in automated driving.
Example : Board-to-Board Connection in Automotive Camera
One of the World’s Smallest Width Dimensions
With a height of 3.0 mm, a contact pitch of 0.4 mm, and a width of 3.8 mm, the BM54 series is one of the world's smallest board-to-board connectors with a floating function. Compared to other companies' products, it occupies 34% less board space, contributing to the miniaturization of sets.
*In ±0.4mm floating board-to-board connector
Comparison of PCB Mounting Space
0.4mm pitch, 3.0mm Stacking Height, 30pos.
Floating Range ±0.4mm in X and Y directions absorb PCB Misalignment
A floating design on the plug side allows ±0.4mm of movement in the XY axis direction. By absorbing misalignment when mounting the connector or assembling the board into the end of product, the design flexibility is expanded. It is also possible to mount and assemble multiple connectors on the same board. Contact reliability is also ensured with an effective mating length of up to 0.4 mm.
Effective Mating Length
±0.3mm (Stacking Height : 3.0mm)
±0.4mm (Stacking Height : 3.5 to 4.5mm)
Connector absorbs misalignment.
Can Mount Multiple Connectors on One Board
|-55 to +125℃
*Includes the temperature rising by current flow.
Initial : 80mΩ Max. After the Test : 100mΩ Max.
|100V AC for 1 min.
|100MΩ Min. (100V DC)
Variations (As of October 2023)
|Stacking Height (mm)
*In cases where the application will demand a high level of reliability, such as automotive, please contact a company representative for further information.
*The contents and specifications are subject to change.