FunctionMAX™ Floating Board-to-Board, Connecting Business-to-Business

To the Highest Peaks of "Floating" and "High Speed Transmission"

As the name "FunctionMAX" implies, this product family is a series of Board-to-Board connectors from Hirose with a mission to meet al l the needs of the industrial market with maximum functionality.
FunctionMAX will never stop pursuing the highest level of functionality for its floating design and high speed transmission connectors, as well as cutting-edge technology for tomorrow’s innovative applications.
We create interconnections for demanding applications that enable our customers to select the most suitable products from our extensive product lineup.

FunctionMAX Digital Catalog

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Floating Functions

Floating connections correct alignment issues due to assembly errors

The floating design offers a degree of "play" between the contacts during mating and allows the connector to absorb alignment errors.

Leading Example of Floating Design

Benefits of a Floating Function

Multiple floating Connectors

Multiple floating connectors can be used on the same PCB.

Contribute to Design

These connectors contribute to the device design by absorbing assembly errors and help to reduce the need for corrective re-work operations.

Reduce the Stress

Spring portion of the terminal absorbs stress imparted by alignment errors. This reduces the stress applied to the mounted parts. This also enhances reliability and prevents solder cracking.

High-Speed Transmission

Reliable performance to meet the needs for future communication speeds.

Hiroseʼs connectors meet high speed communication needs with their solid performance and design for such fields as telecommunications, automotive, factory automation and medical devices.

High Speed Transmission Characteristics

Return Loss (Reflection)
Return loss is reduced by impedance matching, including the floating portion, based on the pitch of the terminals, signal contact width, distance from the ground terminal, and dielectric constant of the insulation material.

Insertion Loss (Attenuation)
The pitch of the terminals, the width and thickness of the signal contact, the dielectric loss tangent of insulation materials, and other factors are used to optimize the design, including the floating portion, so as to minimize resonance and ensure that the insertion loss is proportional to the frequency.

Cross Talk (Leakage)
The terminal and ground pin assignment between the differential pairs are optimized according to t he terminal pitch and transmission rate to minimize resonance and crosstalk.

FunctionMAX has a strong presence in the automotive field.

Connection Examples and Customer Feedback

Product Lineup

FunctionMAX is the best selection for board-to-board connectors.
Superior performance is ensured in diverse environments.

The FunctionMAX family includes both a floating design and high speed transmission capabilities. These series possess additional unique features to meet requirements of various industrial applications.

FX10/11 Series　0.5mm Pitch

These two series focus on high speed transmission. Wide product variations with different stack heights and pin counts. These series have enjoyed strong market support. The three-piece design allows for a floating design.

FX22 Series　0.5mm Pitch

Developed as a coplanar version of the FX20. Enables co-planar connections with multiple connectors. This series also incorporates a highly-reliable two-point contact design. The ultra low-profile design contributes to the reduced size of finished product sets.

FX8/8C Series　0.6mm Pitch

One of the most popular FunctionMAX connectors with a long sales history. Wide variations with a variety of stacking heights and pin counts are available. Compact design allows easy mounting, and supports excellent high speed transmission.

ER8 Series　0.8mm Pitch

Low profile design that supports high speed transmission and enables high density mounting. Halogen free available.

FX18 Series　0.8mm Pitch

The core FunctionMAX connector. User-friendly with a broad range of options. Power terminals can also be used for sequence and grounding applications and act as multi-function terminals.

FX27 Series　0.8mm Pitch

Added floating function and high speed transmission capability to this card edge connector. As an interface between top and bottom boards, it can be also used as a parallel connector. Stacking height, wiring and component mounting are customizable.

FX30B Series
3.81mm Pitch/7.62mm Pitch

Developed for power sources. Features a special misalignment absorbing design similar to floating connectors. UL/C-UL and TÜV compliant.

[For Automotive Applications]

FX20 Series　0.5mm Pitch

This is the first floating connector series developed at Hirose. The independent two-point contact provides high contact reliability and resistance to vibration and impact.

FX23/23L Series　0.5mm Pitch

This series achieves two functions in one connector: floating function and high speed transmission. Saves space by incorporating a power hybrid design. Connectors are also suitable for use with conformal coatings applied after soldering.

FX26 Series　1.0mm Pitch

This high-spec series was developed with the aim of creating a product with specifications that can be used in the engine room. Two-point contact with a vibration resistant and floating design that can be used safely under continuous vibration and in high temperature environments up to 140ºC.

Product Comparison Chart

Series
Pitch			0.5mm	0.5mm	0.5mm	0.5mm	0.5mm	0.6mm	0.8mm	0.8mm	1.0mm	0.8mm	3.81mm 7.62mm
Pin Count			80-168	60-140	20-140	40-80	20-120	60-140	10-120	40-140	20-60	40-120	2-5
Connec tion	Parallel		4-13mm	2-3mm	15-30mm		8-30mm	3-16mm	7-12mm	10-45mm	12-25mm	22mm～	20-30mm
	Right Angle								(120 Pin only)
	Coplanar								(120 Pin only)
	Cable
Rating	Current		0.3A	0.3A	0.5A	0.7A	0.5A	0.4A	0.5A	0.5A	0.7A	0.5A	13-17A 16-19 A
Rating	Voltage		AC 50V	AC 50V	AC 50V	AC 50V	AC 50V	AC 100V	AC 100V	AC 100V	AC 125V	AC 100V	AC/DC 150+ V AC/DC 600V
Mount ing	SMT	ALL SMT
	SMT	SMT+ Through- hole reflow							Right-angle type only.
	Through hole
Additional features	Floating (Mis- alignment absorption)		±0.3mm		±0.6mm	±0.6mm	±0.6mm				±0.7mm	±0.6mm	±0.3mm
	High-speed transmission		15Gbps	10Gbps			8Gbps	3.125Gbps	10Gbps	10Gbps		2.5Gbps
	Multi-point contact
	Power/Signal hybrid						3.0A			3.0A
	Shielding
	Sequential structure
	Standard												UL / C-UL ,TÜV
	Automotive application