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SFMC-125-02-S-D-P Equivalent & Substitute Parts
Part Overview
The SFMC-125-02-S-D-P is a 50-position receptacle connector from Samtec Inc.'s Tiger Eye™ SFMC 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 at 2.9A per contact. The part maintains active product status and is ROHS3 compliant with UL94 V-0 flammability rating. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and component availability across manufacturing cycles.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SFMC-125-02-S-D-P |
| Manufacturer | Samtec Inc. |
| Series | Tiger Eye™ SFMC |
| Connector Type | Receptacle |
| Contact Type | Female Socket |
| 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 |
| Termination | Solder |
| Fastening Type | Push-Pull |
| Contact Finish - Mating | Gold |
| Contact Finish Thickness - Mating | 30.0µin (0.76µm) |
| Current Rating | 2.9A per Contact |
| Operating Temperature | -55°C ~ 125°C |
| Material Flammability Rating | UL94 V-0 |
| Insulation Material | Liquid Crystal Polymer (LCP) |
| Contact Material | Beryllium Copper |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the SFMC-125-02-S-D-P are determined by strict equivalence across the following critical parameters:
- Connector type (Receptacle)
- Contact type (Female Socket)
- Number of positions (50)
- Pitch specification (0.050" / 1.27mm mating pitch)
- Row configuration (2 rows with 0.050" row spacing)
- Mounting method (Surface Mount)
- Termination type (Solder)
- Fastening mechanism (Push-Pull)
- Contact finish (Gold at 30.0µin thickness)
- Current rating (2.9A per contact)
- Operating temperature range (-55°C ~ 125°C)
- Insulation material (Liquid Crystal Polymer)
- Contact material (Beryllium Copper)
- Compliance standards (UL94 V-0, ROHS3)
The SFMC-125-02-SM-D-K meets all these criteria and is classified as a direct substitute within the Tiger Eye™ SFMC series.
Parameter Comparison
| Parameter | SFMC-125-02-S-D-P | SFMC-125-02-SM-D-K |
|---|---|---|
| Manufacturer | Samtec Inc. | Samtec Inc. |
| Series | Tiger Eye™ SFMC | Tiger Eye™ SFMC |
| Connector Type | Receptacle | Receptacle |
| Contact Type | Female Socket | Female Socket |
| 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 |
| Fastening Type | Push-Pull | Push-Pull |
| Contact Finish - Mating | Gold | Gold |
| Contact Finish Thickness - Mating | 30.0µin (0.76µm) | 30.0µin (0.76µm) |
| Current Rating | 2.9A per Contact | 2.9A per Contact |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C |
| Material Flammability Rating | UL94 V-0 | UL94 V-0 |
| Insulation Material | Liquid Crystal Polymer (LCP) | Liquid Crystal Polymer (LCP) |
| Contact Material | Beryllium Copper | Beryllium Copper |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Both the SFMC-125-02-S-D-P and SFMC-125-02-SM-D-K maintain active product status within the Tiger Eye™ SFMC series. Both parts are ROHS3 compliant and carry UL94 V-0 flammability certification, meeting regulatory requirements for industrial and commercial applications. The parts are electrically and mechanically interchangeable based on all provided specifications. Selection between these parts should be based on inventory availability and supply chain requirements, as both meet identical performance and compliance criteria.
Frequently Asked Questions (FAQ)
Q: Are SFMC-125-02-S-D-P and SFMC-125-02-SM-D-K electrically interchangeable?
A: Yes. Both connectors feature identical electrical specifications including 50-position configuration, 0.050" pitch, 2.9A per contact current rating, and gold-plated beryllium copper contacts. They are electrically interchangeable in applications requiring these specifications.
Q: What is the significance of the pitch specification in connector substitution?
A: Pitch (0.050" / 1.27mm) defines the center-to-center spacing between contacts. Connectors with different pitch values are not mechanically compatible. Both substitute parts maintain identical pitch specifications, ensuring mechanical compatibility with mating connectors.
Q: Do both parts support the same mounting method?
A: Yes. Both SFMC-125-02-S-D-P and SFMC-125-02-SM-D-K are surface mount receptacles with solder termination and push-pull fastening. They are compatible with identical PCB assembly processes.
Q: What does the row spacing parameter indicate?
A: Row spacing (0.050" / 1.27mm) specifies the distance between the two rows of contacts. Both parts maintain identical row spacing, ensuring compatibility with the same mating connector designs.
Q: Are there any compliance differences between these parts?
A: No. Both parts are ROHS3 compliant, carry UL94 V-0 flammability rating, and maintain MSL 1 (Unlimited) moisture sensitivity level. Compliance certifications are identical.
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