FJ Series

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

Compact Optical Fiber In-Line Connector
for Internal Connection (FJ-L)

May 2024

FJ Series/Compact Optical Fiber In-Line Connector for Internal Connection (FJ-L)

Overview
The FJ- L offers a compact optical connection using standard LC parts, ensuring more stable connectivity compared totraditional fusion methods.

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

1. Space- Saving

FJ-L

Plug diameter: φ5. 5mm.
Jack diameter: φ3. 5mm.
Accommodates ferrules within these dimensions.

4.7

Less than 1/6 by volume
compared to LC connectors

4.7

2. Can tie with wires.
The connector can be tied alongside the wireusing a binding band.

3. Easy Mating with Bayonet
Lock Design
The bayonet lock design ensures easy andsecure mating.

gu
PlkcaJ

Easy mating with bayonet lock2

FJ Series/Compact Optical Fiber In-Line Connector for Internal Connection (FJ-L)

4. Standard LC Connector
FerrulesUtilizes standard LC connector ferrules, offering
flexibility in choosing distributors and cable
assembly manufacturers.
( Note: Only Multimode Fiber ( MMF) is applicable. )Aug.1.2024 Copyright 2024 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

5. Easy Assembly

Plug Design

Assembly is straightforward and more stable thanfusion splicing due to the utilization of standard
optical connector cabling processes.
Additionally, manual assembly is simplified.

Insert the ferrule into the plug tip, place the jack over it,
and insert the plug projection into the jack hole.

Jack Design

Rotate the jack right to lock, left to release.

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FJ Series/Compact Optical Fiber In-Line Connector for Internal Connection (FJ-L)

Product Specifications
Used Cable

φ 0.5 Bending Resistant Fiber (GI50/80)

Operating Temperature
Range(Operating)-10 to +85℃ (85% RH Max.)
Operating in conditions without freezing
and moisture condensation.

Storage Temperature
Range(When packing)-10 to +60℃ (5 to 85% RH)
Operating in conditions without freezing
and moisture condensation.

Storage Temperature
Range(Non-operating aftermounting)-40 to +85℃ (85% RH Max.)
Operating in conditions without freezing
and moisture condensation.

CompatibleConnector

FJ-L Plug Cable Assembly

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

ItemSpecifications

Insertion Loss (Note)

Conditions
Use a 850nmLED stabilized light source.
Measure the insertion loss at both ends (LC ferrule).

0.5dB Max. (Per terminal)

Mating Durability

50 timesVibration ResistanceFrequency 10-55Hz, Half amplitude 0.75mm, 3 directions,
10cycle each.

Impact Resistance
Temperature Cycle
Heat ResistanceNo damage affecting function or operating
performance(Check appearance and signal transmission)
Post-test insertion loss variation: 0.5dBMax.
No damage, cracks or part dislocation

Acceleration 490m/s2, Pulse duration 11ms，Half-Sin wave, 3directions, three times eachTemperature -40℃ ⇔ +85℃ , Time 10min. ⇔ 10min. in100cycles
Test conducted at temperature of +85℃ for 1,000hours

Cold Resistance

Test conducted at temperature of -40℃ for 1,000hours

Temperature and Humidity
Cycle

Test conducted at a temperature -10 to +65℃ , 24hours
each for 10cycles(Note) Insertion loss measurement uses the master cable assembly.

Handling Precautions
Clean the end face of the ferrule after each mating.
( Use a pen- type cleaner on the plug side. )Materials / Finish
Component

Material

Optical Fiber

Fiber: Silica Glass
Coating: UV Curable Resin/Fluorinated Resin

Hytrel Tubing

Tubing: Polyester Thermoplastic Elastomer

FJ-L PlugLC Ferrule: Zirconia/BrassSpring: Stainless Steel
Split Sleeve: Zirconia
LC Coupling P1: Polyether Sulfone
LC Coupling P2: Polyether Sulfone

Plug Cap

Cap: Styrenic Elastomer

FJ-L JackLC Coupling J: Polyether Sulfone

LC Ferrule Cap 1.25

Cap: Polyester Thermoplastic Elastomer

4FJ Series/Compact Optical Fiber In-Line Connector for Internal Connection (FJ-L)

Product Number Structure
Refer to the chart below when determining the product specifications from the product number.

■ Cable Assembly

FJ L N - LN - M08 01 - 1M

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

❶❷ ❸❹

❺

❶ Series NameFJ Series❷ Ferrule Type❻❼❺ Cable

M08: Outer Dia. φ 0.5, Red

L: LC Ferrule❻ Serial Number

Different Series❸ Connector TypeFJ-L
P: Plug (Assembled)
N: Ferrule only

❼ Length##M: 1m Min.
##MM: 1m or less.

❹ Reverse EndSC
FC
FCAPC
LC
LP: FJ-L Plug
LN: FJ-L Ferrule only
UP: FJ-U Ferrule+Spring
UN: FJ-U Ferrule only
BL: DetachConnector

Specification(Note) We also have a combination cable assembly with our BF4 series.
For more information, please contact Hirose representative.

■ Plug Kit

FJ - L - P - KT 1❶❷❸❹❺❶ Series NameFJ Series❹ Packaging StyleKit❷ Ferrule Type

L: LC Ferrule❺ Serial Number

Different Series❸ Connector Type

P: Plug■ JackFJ - L - J - 1❶❷❸❹

❶ Series NameFJ Series❸ Connector Type

J: Jack❷ Ferrule Type

L: LC Ferrule❹ Serial Number

Different Series5FJ Series/Compact Optical Fiber In-Line Connector for Internal Connection (FJ-L)

Cable Assembly

11.81

11.81

ø1.249

ø1.2491000

Part No.

HRS No.
CL0719-1500-0-00

1pc per bag

Plug Kit

A

4.7

A

A-A
18.85

Part No.
FJ-L-P-KT1

HRS No.

4.7

Purchase Unit

CL0719-1100-0-00

200 sets per bag

Note 1: Ferrules are not included.
Note 2: The actual kit has not been assembled.

Jack

4.7

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

FJLN-LN-M0801-1M

Purchase Unit

13.5

Part No.
FJ-L-J-1

HRS No.

4.7

Purchase Unit

CL0719-1101-0-00

100pcs per bag

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FJ Series/Compact Optical Fiber In-Line Connector for Internal Connection (FJ-L)

Precautions
Precautions for Handling Products( Changes in Content)- The contents of this document, including information on connectors ( Hereinafter, this product) , are subject to change
without prior notice.

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

( Prohibition on Reproduction)- Reprinting and reproduction of this document without the written consent of Hirose Electric Co. , Ltd. ( Hereinafter, Hirose)is prohibited. Even if the written consent of Hirose is obtained, it is prohibited to change the contents of this document
and reproduce it. Hirose assumes no obligation or responsibility for such changed information or reproduction.
( Design Safety Responsibility: )- Hirose is not liable for the application of this product or your product design. Responsibility for the safety and complianceof products and applications using these connectors rests with you. Adequate safety measures should be taken.
( Design Responsibility: )- It is your responsibility to design and use this product safely, ensuring that it does not endanger life, body, or property.
Consult and adhere to product documentation ( catalogs, specifications, design notes) when using this product. Evaluate
and use product data and technical details at your own risk.
( Use in Specific Applications: )- If you are considering use for applications that require extremely high quality or reliability ( Nuclear equipment, aerospaceequipment, transport equipment, various safety- related equipment, etc. ) , please contact your sales representative inadvance.
( Restrictions on Modification: )- Disassembling, reverse engineering, modifying, analyzing, or copying this product is prohibited.
( Prohibited Uses: )- This product must not be used in the manufacture, use, or sale of items prohibited by national or international laws andregulations.
( Intellectual Property and Warranties: )- The technical information contained in this product documentation is for the purpose of explaining typical and applied
operations of this product, and does not guarantee or license any intellectual property or other rights of our company or
any third party in the use thereof.
( Warranty Exclusions: )- Hirose disclaims all warranties ( Guarantee of function and operation, guarantee of merchantability, guarantee ofconformity to specific use and purpose, guarantee of accuracy of information, etc. ) with respect to the products andtechnical information unless otherwise agreed upon in writing or in writing ( specifications, etc. ) .
( Export Precautions: )- When exporting this product outside Japan, the exporter is required to make the determination in accordance with theForeign Exchange and Foreign Trade Law. If you would like the determination issued by our company, please contact
your sales representative. In the export arrangement, you are the exporter and responsible for complying with therelevant laws, regulations and our company terms and conditions.

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

FJ Series/Compact Optical Fiber In-Line Connector for Internal Connection (FJ-L)

While Taking into Consideration
Specifications mentioned in this catalog are reference values.
When considering to order or use this product, please review 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, the warranty of the product may beaffected.
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, public
infrastructure, 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 5/ 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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