3M 8119 Fiber Optic Connector Coupler - Equivalent & Substitute Parts

Part Overview

The 3M 8119 is a simplex fiber optic coupler connector designed for ST receptacle-to-ST receptacle panel mount and bulkhead applications in singlemode fiber optic systems. This component provides a mechanical interface for joining two ST-terminated fiber optic cables or adapters in a fixed installation configuration.

The 3M 8119 is discontinued at DiGi Electronics. Identifying equivalent substitute parts ensures continued availability for system maintenance, repair, and new installations requiring compatible ST-ST coupling functionality.

Substiute Parts

8119

3MIn Stock: 8988119 Datasheet

Current PartRFQ

1061101000

MolexIn Stock: 73601061101000 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3M 8119 is determined by the following critical parameters:

• Connector Configuration: ST receptacle-to-ST receptacle coupling interface
• Transmission Mode: Singlemode fiber optic operation
• Form Factor: Simplex (single-channel) design
• Installation Method: Panel mount and bulkhead mounting capability
• Ferrule Composition: Ceramic ferrule material for optical performance
• Environmental Rating: Operating temperature range compatibility

The Molex 1061101000 meets all specified parameters for direct substitution in applications requiring ST-ST simplex singlemode fiber optic coupling with panel or bulkhead mounting.

Parameter Comparison

Engineering Selection Recommendations

The Molex 1061101000 is the direct equivalent substitute for the 3M 8119. Both components share identical functional specifications for ST-ST simplex singlemode fiber optic coupling with panel and bulkhead mounting.

The Molex 1061101000 offers the advantage of active product status with current manufacturing and distribution support. The component maintains RoHS3 compliance, exceeding the RoHS compliance level of the original 3M part. Ceramic ferrule material in the Molex substitute ensures optical performance consistency with the original design.

The Molex 1061101000 is supplied in bulk packaging with documented inventory availability, supporting both immediate procurement and production planning requirements.

Frequently Asked Questions (FAQ)

Q: Can the Molex 1061101000 directly replace the 3M 8119 in existing installations?

A: Yes. Both components are simplex ST receptacle-to-ST receptacle couplers with identical mounting types (panel mount, bulkhead) and singlemode fiber optic specifications. The mechanical and optical interfaces are equivalent.

Q: What is the significance of the ceramic ferrule material in both parts?

A: Ceramic ferrules provide the optical interface surface for fiber alignment and coupling. Both the 3M 8119 and Molex 1061101000 use ceramic ferrule material, ensuring consistent optical performance and low insertion loss in singlemode applications.

Q: Does the Molex 1061101000 include any additional features?

A: The Molex 1061101000 includes a dust cap feature. This addition does not affect compatibility or substitution suitability; it provides supplementary protection during storage and handling.

Q: Are there temperature range differences between the two parts?

A: The 3M 8119 specifies an operating temperature range of -40°C to 85°C. The Molex 1061101000 does not provide a specified operating temperature range in the available documentation. For applications with critical temperature requirements, verify the Molex component's thermal specifications with the manufacturer.

Q: What packaging format is the Molex 1061101000 supplied in?

A: The Molex 1061101000 is supplied in bulk packaging, suitable for production assembly and direct component selection applications.