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SFC-125-T2-LM-D-A Equivalent & Substitute Parts
Part Overview
The SFC-125-T2-LM-D-A is a 50-position receptacle connector from Samtec Inc.'s Tiger Eye™ SFC series, designed for surface mount board-to-board or cable applications. This connector features 0.050" (1.27mm) pitch mating with gold-plated female socket contacts rated for 3.1A per contact at 350VAC. The part is currently active in production with 945 units in stock.
Identifying equivalent and substitute parts is necessary when addressing supply chain constraints, inventory optimization, or application-specific requirements while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Connector Type | Receptacle |
| Number of Positions | 50 |
| Pitch - Mating | 0.050" (1.27mm) |
| Number of Rows | 2 |
| Row Spacing - Mating | 0.050" (1.27mm) |
| Mounting Type | Surface Mount |
| Contact Finish - Mating | Gold |
| Current Rating | 3.1A per Contact |
| Voltage Rating | 350VAC |
| Operating Temperature | -55°C ~ 125°C |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the SFC-125-T2-LM-D-A is determined by strict equivalence across the following critical parameters:
- Connector Type & Position Count: Receptacle configuration with 50 positions
- Pitch & Row Configuration: 0.050" (1.27mm) mating pitch with 2-row layout and 0.050" row spacing
- Mounting & Termination: Surface mount with solder termination
- Electrical Performance: 3.1A per contact current rating and 350VAC voltage rating
- Contact Material & Finish: Gold-plated mating surface on phosphor bronze contacts
- Environmental Compliance: ROHS3 compliance and MSL 1 rating
The substitute part SFC-125-T2-L-D-A meets all these criteria, differing only in the fastening mechanism designation within the same Tiger Eye™ SFC series.
Parameter Comparison
| Parameter | SFC-125-T2-LM-D-A | SFC-125-T2-L-D-A |
|---|---|---|
| Manufacturer | Samtec Inc. | Samtec Inc. |
| Series | Tiger Eye™ SFC | Tiger Eye™ SFC |
| Connector Type | Receptacle | Receptacle |
| Number of Positions | 50 | 50 |
| Pitch - Mating | 0.050" (1.27mm) | 0.050" (1.27mm) |
| Number of Rows | 2 | 2 |
| Row Spacing - Mating | 0.050" (1.27mm) | 0.050" (1.27mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Termination | Solder | Solder |
| Contact Finish - Mating | Gold | Gold |
| Contact Finish Thickness - Mating | 10.0µin (0.25µm) | 10.0µin (0.25µm) |
| Insulation Color | Black | Black |
| Insulation Height | 0.180" (4.57mm) | 0.180" (4.57mm) |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C |
| Current Rating (Amps) | 3.1A per Contact | 3.1A per Contact |
| Voltage Rating | 350VAC | 350VAC |
| Insulation Material | Liquid Crystal Polymer (LCP) | Liquid Crystal Polymer (LCP) |
| Contact Shape | Square | Square |
| Contact Material | Phosphor Bronze | Phosphor Bronze |
| Base Product Number | SFC-125 | SFC-125 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| ECCN | EAR99 | EAR99 |
| HTSUS | 8536.69.4040 | 8536.69.4040 |
| Product Status | Active | Active |
| Inventory | 945 Pcs New Original In Stock | 960 Pcs New Original In Stock |
Engineering Selection Recommendations
Both the SFC-125-T2-LM-D-A and SFC-125-T2-L-D-A are active production parts with full ROHS3 compliance and identical electrical and mechanical specifications. Selection between these parts should be based on:
- Availability: SFC-125-T2-L-D-A currently has 960 units in stock versus 945 units for the SFC-125-T2-LM-D-A
- Product Status: Both parts maintain active status with no planned obsolescence
- Compliance: Both meet ROHS3 requirements and carry MSL 1 rating, suitable for unlimited shelf life storage
No performance degradation or functional compromise occurs when substituting between these parts within the same application context.
Frequently Asked Questions (FAQ)
Q: Are SFC-125-T2-LM-D-A and SFC-125-T2-L-D-A electrically interchangeable?
A: Yes. Both parts share identical electrical specifications including 3.1A per contact current rating, 350VAC voltage rating, and gold-plated contact finish. They are direct electrical equivalents.
Q: What is the difference between these two part numbers?
A: The parts differ only in fastening type designation within their part number nomenclature. All other mechanical and electrical parameters are identical.
Q: Can I use SFC-125-T2-L-D-A as a direct replacement in existing designs using SFC-125-T2-LM-D-A?
A: Yes. The parts are mechanically and electrically equivalent with identical PCB footprints, mounting requirements, and performance characteristics.
Q: Are both parts RoHS compliant?
A: Yes. Both SFC-125-T2-LM-D-A and SFC-125-T2-L-D-A are ROHS3 compliant.
Q: What is the moisture sensitivity level for these connectors?
A: Both parts carry MSL 1 rating, indicating unlimited shelf life with no special moisture control requirements during storage or handling.
Q: Do these parts require any special handling or storage conditions?
A: No. With MSL 1 rating, standard component storage conditions are sufficient. No baking or desiccant storage is required.
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