FX25 Series

Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

0.4mm Pitch, Small & Floating,Board-to-Board Connector

Product Page
https://www.hirose.com/en/product/series/FX25Jan. 2024

FX25 Series/0.4mm Pitch, Small & Floating, Board-to-Board Connector

Features1. 0. 4mm Pitch, Compact,
High Pin Count Connector

Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

The FX25 Series contributes to space- saving inboard design. Compared to Hirose' s existingproducts with 0. 5mm pitch, mounting area isreduced by approximately 40% . Furthermore,when compared to other manufacturer' s productswith the same 0. 4mm pitch, FX25 has one of thesmallest mounting areas and product volume.

Amongst the Industry's Smallest Designs*Dimensions of 110pos.

2. Connection Type :Right Angle Connection
Header Side : Straight Type
Receptacle Side : Right Angle Type

3. Floating Amount :±0. 45mm in the X and Ydirections

Ｙ：±0.45mm
X : ±0.４５ｍｍ
Reｃeptacle Side
Header Side
Floating Part
Secured Part

Floating Design

4. High Speed Transmission :2. 5Gbps2

FX25 Series/0.4mm Pitch, Small & Floating, Board-to-Board Connector

5. Current Capacity : 0. 4A/ pin
Contact uses a highly conductive material andcan conduct 0. 4A/ pin.

6. Excellent Mating Operation
Due to Wide Self- Alignment
Guide

Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

The self- alignment range of 0. 75mm in both theX and Y direction contributes to assembly
automation.

7. Effective Fitting Length :1mm for High Contact
Reliability Design
8. Pick & Place Mounting
This product has a flat surface for Pick & Placemounting

9. Can Inspect Soldered
Area from the Top of theConnector

3FX25 Series/0.4mm Pitch, Small & Floating, Board-to-Board Connector

Application
The FX25 Series can be used in a wide range of consumer, medical, industrial and other products that require spacesaving PCB design.

Product Specifications
Rated Current

0.4A

Operating Temperature (Note 1)-55 to +85℃

Rated Voltage

50V AC/DC

Storage Temperature Range (Note 2)-40 to +60℃

Operating Humidity Range

Relative humidity : 85% Max.
(Without Condensation)

Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

Storage Humidity Range (Note 2)

ItemSpecificationConditions

Contact Resistance

60m Ω Max.

Measured at 100mA

Insulation Resistance

50M Ω Min.

Measured at 100V DC

Withstanding Voltage

No flashover or insulation breakdown

200V AC for 1 min.

Mating Durability

Contact Resistance : 80m Ω Max.

10 times insertion and extraction

Vibration ResistanceNo electrical discontinuity of 1μ s Min.

Frequency 10 to 55 Hz, single amplitude 0.75 mm,
1 cycle 5 min, 3 axial 10 cycles each

Shock ResistanceNo electrical discontinuity of 1μ s Min.

Acceleration 490m/s2, Duration 11ms,
3 sine half-waves in both directions 3 times each

Moisture ResistanceContact Resistance : 80m Ω Max.
Insulation Resistance : 50M Ω Min.

Left for 96 hours at 40℃ and 90 to 95% humidity

Temperature Cycle

Contact Resistance : 80m Ω Max.
Insulation Resistance : 50M Ω Min.

Temperature : -55 → + 85℃
Time : 30 → 30min., 5 cycles

Note 1 : Includes the temperature rise due to current flow.
Note 2 : "Storage" here refers to the long-term storage condition of unused products before the board is mounted.
The operating temperature and humidity range is applied when the circuit board is not energized after mounting, or when it is temporarily stored duringtransportation.

4FX25 Series/0.4mm Pitch, Small & Floating, Board-to-Board Connector

Material / Finish
Component
Insulator

Material

Color / Finish

Header

LCP, Polyamide ResinBlack

UL94V-0

Receptacle

LCP

Black

UL94V-0

Copper Alloy

Contact : Gold Plated (Nickel Underplating)
Mounting : Gold Plated (Nickel Underplating)-BrassTin Plating (Nickel Underplating)-Contact
Retention Tab

Product Number Structure
Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

Remarks

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.

Header / Receptacle

FX25 - 110 P - 0.4 SV❶❷

❸

❹

❺

❶ Series Name

FX25

❹ Contact Pitch

0.4mm❷ No. of Pos.

Mass Production：80, 110pos.
Under Planning：40, 60, 100, 120pos.

❺ Product TypeSV : Straight TypeSH : Right Angle Type❸ Connector TypeP : Header
S : Receptacle

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FX25 Series/0.4mm Pitch, Small & Floating, Board-to-Board Connector

High Speed Transmission Characteristics
1. Pin Assignment

Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

The following pin arrangement is recommended to match the 100Ω differential impedance and reduce crosstalk.

Receptacle Side (Right Angle)

Header Side

Receptacle Side

Header Side

Note : Since the receptacle is a right angle type,
the transmission characteristics of the inner side andouter side diﬀer.

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FX25 Series/0.4mm Pitch, Small & Floating, Board-to-Board Connector

2. Differential Impedance 300ps Rise Time (20 to 80%)

Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

ヘッダー側
HeaderSide

レセプタクル側
Receptacle
Sideｐｓ（20～80％）において、100±10Ωを満たしております。
At立ち上がり時間300a rise time of 300ps(20 to 80%),100±10Ω
is satisﬁed.
3. Insertion Loss

4. Return Loss
ヘッダー側
HeaderSide

レセプタクル側
Receptacle
Side

Excellent insertion loss and return loss up to 5GHz. If you have questions about the varioustransmission standards, please contact a Hirose representative.

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FX25 Series/0.4mm Pitch, Small & Floating, Board-to-Board Connector

Straight Header

P＝０．
４±0.０８５．
１±0.２

5.4±0.３

HRS Mark

A±0.２
B±0.１

5.15±0.３

ｔ＝０．
１±0.０３× Ｗ＝０．
１５±0.０５０．
２±0.０５
Ｃ±0.２５４．
１±0.２５

Recommended PCB Layout
B±0.020.6±0.05

1.25 04.1±0.03＋0.1

P＝0.4±0.02
0.23±0.02
5.8±0.05

Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

１．
２２±0.０３

1.8±0.05

C±0.03

Unit : mm

Part No.

HRS No.

No. of Pos.

A

B

C

Purchase Unit

FX25-40P-0.4SV

Under Planning (Note 1)

40

14.1

7.6

11.5

FX25-60P-0.4SV

Under Planning (Note 1)

60

18.1

11.6

15.5

FX25-80P-0.4SV

CL0575-4002-0-00

80

22.1

15.6

19.5

1,000pcs per reel

FX25-100P-0.4SV

Under Planning (Note 1)

100

26.1

19.6

23.5

-

FX25-110P-0.4SV

CL0575-4001-0-00

110

28.1

21.6

25.5

1,000pcs per reel

FX25-120P-0.4SV

Under Planning (Note 1)

120

30.1

23.6

27.5--Note 1 : Pin counts without HRS No. are currently being planned for development. Please contact a Hirose representative regarding questions on pin countvariation development.
Note 2 : The header side of this product does not have polarity. It can be mated with the receptacle in any orientation.

8FX25 Series/0.4mm Pitch, Small & Floating, Board-to-Board Connector

Right Angle Receptacle
A±0.２
B±0.１

Contact
No.１

４．
１±0.３

４．
２５±0.２P＝０．
４±0.０８W＝０．
１５±0.０５

HRS Mark０．
２±0.０５１．
２２±0.１

C±0.２５３．
２２５±0.３

Recommended PCB Layout
1.8±0.05

PCB End+0.1

4.5±0.05

3.425±0.03

1.3 0+0.1

2 Max.

B±0.02
P＝0.4±0.02
0.23±0.02

1.3 0Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

５．
８５±0.３

ContactNo.２

0.6±0.05

C±0.03

Unit : mm

Part No.

HRS No.

No. of Pos.

AB

CPurchase Unit

FX25-40S-0.4SH

Under Planning (Note)

40

13.7

7.6

12.6

FX25-60S-0.4SH

Under Planning (Note)

60

17.7

11.6

16.6

FX25-80S-0.4SH

CL0575-4102-0-00

80

21.7

15.6

20.6

1,000psc per reel

FX25-100S-0.4SH

Under Planning (Note)

100

25.7

19.6

24.6

-

FX25-110S-0.4SH

CL0575-4101-0-00

110

27.7

21.6

26.6

1,000psc per reel

FX25-120S-0.4SH

Under Planning (Note)

120

29.7

23.6

28.6--Note : Pin counts without HRS No. are currently being planned for development. Please contact a Hirose representative regarding questions on pin count variation
development.

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FX25 Series/0.4mm Pitch, Small & Floating, Board-to-Board Connector

Packaging Specifications
Header（FX25-##P-0.4SV）
Embossed Carrier Tape Dimensions（No scale）

E Max.

80.
±21
φ+2

D 0

1.7 +0.150（Ｆ）

Embossed Carrier Tape+0.1

1.5 0(0.5)

Embossed Carrier Tape（6.4）

Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

C±0.3
B±0.1

φ80 Ｍａｘ．

A±0.3

Unreeling Direction

φ382 Ｍａｘ．

P=12±0.15

0.2
3±φ12±0.2
P=4±0.1

Reel Dimensions（No scale）+0.1
φ1.5 0

Unit : mm

Part No.

HRS No.

A

B

C

DE

F

FX25-40P-0.4SV

Under Planning (Note 1)------

FX25-60P-0.4SV

Under Planning (Note 1)------

FX25-80P-0.4SV

CL0575-4002-0-00

20.2

40.4

44.0

44.4

47.4

50.4

FX25-100P-0.4SV

Under Planning (Note 1)------

FX25-110P-0.4SV

CL0575-4001-0-00

20.2

40.4

44.0

44.4

47.4

50.4

FX25-120P-0.4SV

Under Planning (Note 1)------

Note : Pin counts without HRS No. are currently being planned for development. Please contact a Hirose representative regarding questions on pin count variation
development.

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FX25 Series/0.4mm Pitch, Small & Floating, Board-to-Board Connector

Receptacle (FX25-##S-0.4SH)
Embossed Carrier Tape Dimensions（No scale）
Unreeling Direction

E Max.

80.
±21φ+2

D 0φ80 Ｍａｘ．

C±0.3
B±0.1

1.7 +0.150（Ｆ）

Embossed Carrier Tape
+0.1

Embossed Carrier Tape(0.5)

1.5 0(7.25)

Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

φ382 Ｍａｘ．

+0.1

φ1.5 0A±0.3

P＝12±0.15

0.2
3±φ1

P=4±0.1
0.475±0.15

Reel Dimensions（No scale）

Unit : mm

Part No.

HRS No.

A

B

C

DE

F

FX25-40S-0.4SH

Under Planning (Note)------

FX25-60S-0.4SH

Under Planning (Note)------

FX25-80S-0.4SH

CL0575-4102-0-00

20.2

40.4

44.044.4

47.4

50.4

FX25-100S-0.4SH

Under Planning (Note)------

FX25-110S-0.4SH

CL0575-4101-0-00

20.2

40.4

44.0

44.4

47.4

50.4

FX25-120S-0.4SH

Under Planning (Note)------

Note : Pin counts without HRS No. are currently being planned for development. Please contact a Hirose representative regarding questions on pin count variation
development.

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FX25 Series/0.4mm Pitch, Small & Floating, Board-to-Board Connector

Recommended Temperature Profile＜ Applicable Conditions ＞(Peak Temperature : 250℃ Max.)260

Test PCB Dimensions: 110 × 60 × 1.6mm
Material: Glass epoxy
Solder Composition: Sn-3Ag-0.5Cu
Flux Content: 11wt%Metal Mask Thickness: 0.12mm, 0.15mm
Number of Reflow Times : 2 times Max.

240
220℃

220200℃

Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

Temperature (℃)

200180160140

0150℃This temperature profile is for the above conditions.
The temperature profile may vary depending on the type ofcream solder, the manufacturer, the board size and otherconditions such as mounting materials. Please check themounting status before use.

(90 to 120 seconds)(within 60 seconds)
Preheating Time（150 to 200℃） Soldering Time
（220℃ or more）

Cleaning Conditions
Organic Solvent Cleaning
Solvent

Cleaning at Normal Temperature

Heated Cleaning

IPA (Isopropyl Alcohol)

OKOK

Water- Based Cleaning
When using water- based cleaning agents ( e. g. , terpene, and alkali saponifiers) , select the cleaning agent based on thedocumentation issued by the various manufacturers, which describes its effects on metals and resins. Do not to leave
moisture on the connectors.

Cleaning Precautions
Residual flux or cleaning agents on the connectors from cleaning with organic solvents or water- based cleaners
may cause deterioration of the electrical performance. It is important to check that a thorough washing has been
performed.

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FX25 Series/0.4mm Pitch, Small & Floating, Board-to-Board Connector

Precautions During Use
Specified Dimensions Between PCBs
Please confirm the Drawing and use within the specified dimensions.

FX25-##S-0.4SH

Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

2.0 Max.

PCB

FX25-##P-0.4SV

PCBSecuring PCBs
Using only connectors is not recommended. If the board is supported only by the connector, an excessive load may beapplied to the connector which may result in damage or contact failure.
Take measures to secure the board other than using the connector.

Mating Precautions
The self- alignment range is ±0. 75mm in the X and Y directions.
While following the guide, insert the connector straight in without applying excessive load during mating.

±0.75ｍｍ±0.75ｍｍ

Self-Alignment Range :X Axis Direction (Longitudinal Direction) : ±0.75mm

Y Axis Direction (Lateral Direction) : ±0.75mm

Mating Precautions
It is recommended to operate the connector straight without tilting the connector. If it is not possible to operate theconnector straight due to the layout of the board or the panel design, refrain from bending the connector as much as
possible during mating while making sure not to apply excessive force. When mating is completed, align the connectors
so they are connected straight.

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FX25 Series/0.4mm Pitch, Small & Floating, Board-to-Board Connector

Misalignment Allowance in the Mated Condition
Since this connector has a floating design, the maximum allowable PCB misalignment amount is ±0. 45mm in the X
and Y directions when mated. However, it is not suitable for misalignment absorption when the misalignment amountconstantly changes due to vibration, etc. Be sure to secure the PCBs after mating. The floating operation can be
repeated 10 times max. based on the connector mating durability ( insertion/ extraction times) .
Floating Part

Misalignment Tolerance Land : ±0.45mm
Floating Movable Part

Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

Fixed Part

［FX25 Series Header Side : Floating Design]

Floating Movable Amount : XY Axis ±0.45mm

While Taking into Consideration
Specifications mentioned in this catalog are reference values.
When considering to order or use this product, please confirm the Drawing and Product Specifications sheets.
Use an appropriate cable when using the connector in combination with cables.
If considering usage of a non- specified cable, please contact your sales representative.
If assembly process is done by jigs & tools which are not identified by Hirose, assurance will not be given.
If considering usage for below mentioned applications, please contact your sales representative.
In cases where the application will demand a high level of reliability, such as automotive, medical instruments, publicinfrastructure, aerospace/ defense etc. Hirose must review before assurance of reliability can be given.

HIROSE
2-6-3,Nakagawa Chuoh,Tsuzuki-Ku,Yokohama-Shi 224-8540,JAPANhttps://www.hirose.com※ The contents of this catalog are current as of date of 1/ 2024. Contents are subject to change without notice for the purpose of improvements.
※ The HRS logo and "HIROSE" are trademarks of HIROSE ELECTRIC CO., LTD.

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