JBXFD2G12MSSDSMR Equivalent & Substitute Parts

Part Overview

The JBXFD2G12MSSDSMR is a 12-position circular connector plug with male pins and solder cup termination, manufactured by Souriau-Sunbank by Eaton. This connector is designed for industrial, instrumentation, medical, and telecommunications applications requiring shielded, free-hanging in-line connections. The part is currently active in production with 1179 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are required for component procurement, inventory management, or supply chain continuity.

Substiute Parts

JBXFD2G12MSSDSMR

Souriau-Sunbank by EatonIn Stock: 1231JBXFD2G12MSSDSMR Datasheet

Current PartRFQ

FGG.2B.312.CLAD52

LEMOIn Stock: 807FGG.2B.312.CLAD52 Datasheet

SimilarRFQ

FGG.2B.312.CLAD82

LEMOIn Stock: 783FGG.2B.312.CLAD82 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the JBXFD2G12MSSDSMR are identified based on strict equivalence of the following critical parameters:

Mandatory Matching Parameters:

• Connector type: Plug with male pins
• Number of positions: 12
• Termination method: Solder cup
• Fastening mechanism: Push-Pull
• Shielding configuration: Shielded
• Current rating: 7A
• Contact finish: Gold plating
• Shell material: Brass
• Insert material: PEEK
• Orientation: G
• Mounting type: Free Hanging (In-Line)
• Material flammability: UL94 V-0
• RoHS compliance: ROHS3 Compliant
• MSL rating: 1 (Unlimited)

The two identified substitutes, FGG.2B.312.CLAD52 and FGG.2B.312.CLAD82 (both LEMO series 2B), meet all mandatory matching parameters. Variations in cable opening dimensions and operating temperature ranges reflect design differences that do not affect functional substitution within the specified electrical and mechanical constraints.

Parameter Comparison

Engineering Selection Recommendations

JBXFD2G12MSSDSMR (Primary Part): This Souriau-Sunbank connector is the specified component with active production status and 1179 units in current inventory. It carries ROHS3 compliance and UL94 V-0 flammability certification. The 830V voltage rating and -40°C to 125°C operating range define the electrical and thermal envelope for this application.

FGG.2B.312.CLAD52 (Substitute Option 1): This LEMO connector meets all mandatory electrical and mechanical parameters with 761 units in inventory. The cable opening specification of 0.165" ~ 0.205" (4.20mm ~ 5.20mm) accommodates smaller diameter cables. The extended operating temperature range (-55°C ~ 250°C) and higher ingress protection rating (IP50) provide enhanced environmental performance. Contact finish thickness of 39.4µin (1.00µm) exceeds the primary part specification. Selection is appropriate when cable diameter constraints and extended temperature performance are required.

FGG.2B.312.CLAD82 (Substitute Option 2): This LEMO connector meets all mandatory electrical and mechanical parameters with 762 units in inventory. The cable opening specification of 0.283" ~ 0.323" (7.20mm ~ 8.20mm) accommodates larger diameter cables. Operating temperature range and ingress protection rating match FGG.2B.312.CLAD52. Selection is appropriate when cable diameter constraints and extended temperature performance are required.

All three parts carry identical RoHS and MSL certifications, ensuring regulatory compliance across substitution scenarios.

Frequently Asked Questions (FAQ)

Q: Can FGG.2B.312.CLAD52 or FGG.2B.312.CLAD82 be used as direct replacements for JBXFD2G12MSSDSMR?

A: Yes, both LEMO connectors meet the mandatory electrical and mechanical parameters: 12-position male pin plug, solder cup termination, push-pull fastening, shielded configuration, 7A current rating, gold contact finish, brass shell with PEEK insert, UL94 V-0 flammability, ROHS3 compliance, and MSL 1 rating. The differences in cable opening dimensions, operating temperature range, and ingress protection rating do not prevent functional substitution within the specified electrical constraints.

Q: What is the difference between FGG.2B.312.CLAD52 and FGG.2B.312.CLAD82?

A: Both connectors are electrically and mechanically equivalent. The primary difference is cable opening diameter: FGG.2B.312.CLAD52 accommodates 0.165" ~ 0.205" (4.20mm ~ 5.20mm) cable diameter, while FGG.2B.312.CLAD82 accommodates 0.283" ~ 0.323" (7.20mm ~ 8.20mm) cable diameter. Selection depends on the cable gauge used in the application.

Q: Why do the LEMO substitutes have a higher operating temperature range than the primary part?

A: The LEMO FGG series is rated for -55°C ~ 250°C operation, while the Souriau-Sunbank JBXFD2G is rated for -40°C ~ 125°C. This difference reflects design and material specifications of each manufacturer's product line. The primary part's temperature range is sufficient for the specified application envelope.

Q: Are there voltage rating differences between the primary part and substitutes?

A: The JBXFD2G12MSSDSMR specifies 830V voltage rating. The LEMO FGG.2B.312.CLAD52 and FGG.2B.312.CLAD82 do not provide voltage rating specifications in the available data. When voltage rating is a critical design parameter, the primary part specification should be verified against application requirements.

Q: What does the contact finish thickness difference mean?

A: The primary part specifies 19.7µin (0.50µm) gold plating thickness, while both LEMO substitutes specify 39.4µin (1.00µm). The LEMO parts provide thicker gold plating, which may offer enhanced durability in high-cycle mating applications. Both thicknesses are within industry standards for gold-plated contacts.

Q: Do all three connectors have the same ingress protection rating?

A: No. The JBXFD2G12MSSDSMR is rated IP40, while both LEMO substitutes are rated IP50 (Dust Protected). IP50 provides enhanced protection against dust ingress compared to IP40. This difference does not prevent substitution but indicates improved environmental sealing in the LEMO designs.

Q: Are there any compliance or certification differences?

A: All three connectors carry identical ROHS3 compliance, MSL 1 (Unlimited) rating, and UL94 V-0 flammability certification. REACH status is unaffected for all parts. ECCN and HTSUS classifications are identical.