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SSW-118-01-SM-S Equivalent & Substitute Parts
Part Overview
The SSW-118-01-SM-S is an 18-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 gold-plated mating contacts, tin-plated posts, and is rated for 4.7A per contact with an operating temperature range of -55°C to 125°C. The part is currently active in production with 959 units in stock. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and connector interface standards to ensure direct functional interchangeability in circuit designs.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Connector Type | Receptacle |
| Number of Positions | 18 |
| Pitch - Mating | 0.100" (2.54mm) |
| Mounting Type | Through Hole |
| Contact Type | Forked |
| Contact Finish - Mating | Gold |
| Contact Finish - Post | Tin |
| Current Rating | 4.7A per Contact |
| Operating Temperature | -55°C ~ 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-118-01-SM-S is determined by strict equivalence across the following critical parameters:
- Connector Interface: 18-position receptacle with 0.100" (2.54mm) pitch mating interface
- Contact Configuration: Forked contact type with gold mating finish and tin post finish
- Electrical Rating: 4.7A per contact current capacity
- Thermal Performance: -55°C to 125°C operating temperature range
- Material Compliance: UL94 V-0 flammability rating and ROHS3 compliance
- Mounting Standard: Through-hole solder termination with push-pull fastening
The SSW-118-01-S-S meets all substitution criteria as it maintains identical specifications across all critical parameters while differing only in packaging designation (S-S versus SM-S suffix).
Parameter Comparison
| Parameter | SSW-118-01-SM-S | SSW-118-01-S-S |
|---|---|---|
| Manufacturer | Samtec Inc. | Samtec Inc. |
| Series | SSW | SSW |
| Connector Type | Receptacle | Receptacle |
| Number of Positions | 18 | 18 |
| 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 (30.0µin / 0.76µm) | Gold (30.0µin / 0.76µm) |
| Contact Finish - Post | Tin | Tin |
| Insulation Color | Black | Black |
| 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 ~ 125°C | -55°C ~ 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 |
| Base Product Number | SSW-118 | SSW-118 |
Engineering Selection Recommendations
Both the SSW-118-01-SM-S and SSW-118-01-S-S are active production parts from Samtec Inc. with full ROHS3 compliance and UL94 V-0 material certification. Selection between these parts should be based on packaging and inventory availability rather than electrical or mechanical performance, as all functional parameters are identical. The SSW-118-01-SM-S currently maintains higher inventory (959 units) compared to the SSW-118-01-S-S (711 units), which may influence procurement decisions for high-volume applications.
Frequently Asked Questions (FAQ)
Q: Can SSW-118-01-S-S be used as a direct replacement for SSW-118-01-SM-S?
A: Yes. Both parts are functionally equivalent across all electrical and mechanical specifications. The suffix designation (SM-S versus S-S) reflects packaging classification only and does not affect connector performance, contact rating, or thermal characteristics.
Q: What determines compatibility between these connector models?
A: Compatibility is established through matching connector interface (18-position, 0.100" pitch receptacle), contact configuration (forked type with gold/tin finish), electrical rating (4.7A per contact), operating temperature range (-55°C to 125°C), and material compliance (UL94 V-0, ROHS3).
Q: Are there any differences in PCB footprint or mounting between these parts?
A: No. Both parts share identical through-hole mounting specifications, insulation height (0.335"), contact post length (0.104"), and board-to-board interface dimensions.
Q: What is the significance of the packaging designation in the part number?
A: The packaging designation (SM-S or S-S) indicates the form in which the connector is supplied (bulk packaging configuration) but does not affect the connector's electrical performance, mechanical dimensions, or functional interchangeability.
Q: Are both parts compliant with current environmental and safety standards?
A: Yes. Both SSW-118-01-SM-S and SSW-118-01-S-S are ROHS3 compliant and carry UL94 V-0 material flammability certification, meeting current environmental and safety requirements for electronic component applications.
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