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SSW-120-01-FM-S Equivalent & Substitute Parts
Part Overview
The SSW-120-01-FM-S is a 20-position receptacle connector manufactured by Samtec Inc., designed for board-to-board or cable applications with 0.100" (2.54mm) pitch through-hole mounting. This connector features forked contacts with gold mating finish and tin post finish, rated for 4.7A per contact across an operating temperature range of -55°C to 125°C. The part is currently active in production with 648 units in stock. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within the SSW series connector family.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Connector Type | Receptacle |
| Number of Positions | 20 |
| Pitch - Mating | 0.100" (2.54mm) |
| Contact Type | Forked |
| Mounting Type | Through Hole |
| Termination | Solder |
| Fastening Type | Push-Pull |
| Contact Finish - Mating | Gold (3.00µin / 0.076µm) |
| Contact Finish - Post | Tin |
| Current Rating | 4.7A per Contact |
| Operating Temperature | -55°C to 125°C |
| Insulation Material | Liquid Crystal Polymer (LCP) |
| Material Flammability Rating | UL94 V-0 |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the SSW-120-01-FM-S is determined by strict equivalence across the following critical parameters:
- Connector type (Receptacle)
- Number of positions (20)
- Mating pitch (0.100" / 2.54mm)
- Contact type (Forked)
- Mounting method (Through Hole)
- Termination type (Solder)
- Fastening mechanism (Push-Pull)
- Contact finish specifications (Gold mating, Tin post)
- Current rating (4.7A per contact)
- Operating temperature range (-55°C to 125°C)
- Insulation material (LCP)
- Flammability rating (UL94 V-0)
- Regulatory compliance (ROHS3)
The SSW-120-01-F-S meets all substitution criteria and belongs to the same SSW series base product family (SSW-120).
Parameter Comparison
| Parameter | SSW-120-01-FM-S (Main) | SSW-120-01-F-S (Substitute) |
|---|---|---|
| Manufacturer | Samtec Inc. | Samtec Inc. |
| Series | SSW | SSW |
| Connector Type | Receptacle | Receptacle |
| Number of Positions | 20 | 20 |
| Pitch - Mating | 0.100" (2.54mm) | 0.100" (2.54mm) |
| Contact Type | Forked | Forked |
| Mounting Type | Through Hole | Through Hole |
| Termination | Solder | Solder |
| Fastening Type | Push-Pull | Push-Pull |
| Contact Finish - Mating | Gold (3.00µin / 0.076µm) | Gold (3.00µin / 0.076µm) |
| Contact Finish - Post | Tin | Tin |
| Insulation Height | 0.335" (8.51mm) | 0.335" (8.51mm) |
| Contact Length - Post | 0.104" (2.64mm) | 0.104" (2.64mm) |
| Operating Temperature | -55°C to 125°C | -55°C to 125°C |
| Current Rating | 4.7A per Contact | 4.7A per Contact |
| Insulation Material | Liquid Crystal Polymer (LCP) | Liquid Crystal Polymer (LCP) |
| Material Flammability Rating | UL94 V-0 | UL94 V-0 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active |
| Inventory | 648 Pcs | 1070 Pcs |
Engineering Selection Recommendations
Both the SSW-120-01-FM-S and SSW-120-01-F-S are active production parts with ROHS3 compliance and identical electrical and mechanical specifications. Selection between these parts may be based on inventory availability. The SSW-120-01-F-S currently has higher stock levels (1070 units versus 648 units), which may provide supply chain advantages for high-volume applications. Both parts carry the same regulatory certifications and flammability ratings, ensuring equivalent performance in applications requiring UL94 V-0 compliance.
Frequently Asked Questions (FAQ)
Q: Can SSW-120-01-F-S be used as a direct replacement for SSW-120-01-FM-S?
A: Yes. Both parts are electrically and mechanically equivalent across all specified parameters, including connector type, position count, pitch, contact configuration, current rating, and operating temperature range.
Q: Are there differences in contact finish between these parts?
A: No. Both parts feature identical gold mating finish (3.00µin / 0.076µm thickness) and tin post finish.
Q: Do both parts meet the same compliance standards?
A: Yes. Both SSW-120-01-FM-S and SSW-120-01-F-S are ROHS3 compliant with UL94 V-0 flammability rating.
Q: What is the significance of the part number suffix difference (FM-S versus F-S)?
A: The part number suffix indicates internal Samtec designation within the SSW series. Both variants maintain identical electrical and mechanical specifications for the 20-position 0.100" pitch receptacle configuration.
Q: Are these connectors suitable for high-current applications?
A: Both parts are rated for 4.7A per contact, supporting applications within this current specification across the -55°C to 125°C operating temperature range.
Q: Can these connectors be used interchangeably in PCB designs?
A: Yes. Identical mounting type (through hole), pitch (0.100"), insulation height (0.335"), and contact length ensure mechanical and electrical interchangeability in PCB layouts.
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