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SSM-120-SM-SV-BE Equivalent & Substitute Parts
Part Overview
The SSM-120-SM-SV-BE is a 20-position receptacle connector from Samtec Inc.'s Tiger Claw™ SSM series, designed for surface mount applications with bottom entry configuration. This connector features gold-plated mating contacts, 0.100" (2.54mm) pitch, and is rated for 5.2A per contact at 405VAC/572VDC. The part is Active status and ROHS3 compliant, making it suitable for industrial and commercial board-to-board or cable interconnect applications. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and cost optimization while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SSM-120-SM-SV-BE |
| Manufacturer | Samtec Inc. |
| Category | Rectangular Connectors |
| Series | Tiger Claw™ SSM |
| Number of Positions | 20 |
| Pitch - Mating | 0.100" (2.54mm) |
| Connector Type | Receptacle, Bottom Entry |
| Contact Type | Female Socket |
| Mounting Type | Surface Mount |
| Current Rating | 5.2A per Contact |
| Voltage Rating | 405VAC, 572VDC |
| Operating Temperature | -55°C ~ 125°C |
| Contact Finish - Mating | Gold |
| Insulation Material | Liquid Crystal Polymer (LCP) |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitution eligibility for the SSM-120-SM-SV-BE is determined by strict equivalence across the following critical parameters:
- Connector Type & Configuration: Receptacle, bottom entry, board-to-board or cable style
- Position Count & Pitch: 20 positions at 0.100" (2.54mm) mating pitch
- Contact Specifications: Female socket contacts with gold mating finish
- Mounting & Termination: Surface mount with solder termination
- Electrical Ratings: 5.2A per contact, 405VAC/572VDC voltage rating
- Operating Environment: -55°C to 125°C temperature range
- Material & Compliance: LCP insulation, ROHS3 compliant
The substitute part SSM-120-S-SV-BE meets all these criteria, differing only in internal design designation (S vs. SM suffix) while maintaining identical electrical, mechanical, and environmental specifications.
Parameter Comparison
| Parameter | SSM-120-SM-SV-BE | SSM-120-S-SV-BE | Match |
|---|---|---|---|
| Manufacturer | Samtec Inc. | Samtec Inc. | ✓ |
| Series | Tiger Claw™ SSM | Tiger Claw™ SSM | ✓ |
| Number of Positions | 20 | 20 | ✓ |
| Pitch - Mating | 0.100" (2.54mm) | 0.100" (2.54mm) | ✓ |
| Connector Type | Receptacle, Bottom Entry | Receptacle, Bottom Entry | ✓ |
| Contact Type | Female Socket | Female Socket | ✓ |
| Mounting Type | Surface Mount | Surface Mount | ✓ |
| Termination | Solder | Solder | ✓ |
| Current Rating | 5.2A per Contact | 5.2A per Contact | ✓ |
| Voltage Rating | 405VAC, 572VDC | 405VAC, 572VDC | ✓ |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | ✓ |
| Contact Finish - Mating | Gold | Gold | ✓ |
| Contact Finish Thickness - Mating | 30.0µin (0.76µm) | 30.0µin (0.76µm) | ✓ |
| Insulation Material | Liquid Crystal Polymer (LCP) | Liquid Crystal Polymer (LCP) | ✓ |
| Insulation Color | Black | Black | ✓ |
| Insulation Height | 0.290" (7.37mm) | 0.290" (7.37mm) | ✓ |
| Contact Shape | Square | Square | ✓ |
| Contact Material | Phosphor Bronze | Phosphor Bronze | ✓ |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ✓ |
| Product Status | Active | Active | ✓ |
| Base Product Number | SSM-120 | SSM-120 | ✓ |
Engineering Selection Recommendations
Both SSM-120-SM-SV-BE and SSM-120-S-SV-BE are Active status products from Samtec Inc. and maintain full ROHS3 compliance. The parts are electrically and mechanically identical across all specified parameters, including electrical ratings, operating temperature range, contact materials, and insulation specifications. Selection between these parts may be based on inventory availability: SSM-120-SM-SV-BE has 904 pieces in stock, while SSM-120-S-SV-BE has 830 pieces available. Both parts carry identical compliance certifications (ROHS3, EAR99, HTSUS 8536.69.4040) and moisture sensitivity level (MSL 1 - Unlimited).
Frequently Asked Questions (FAQ)
Q: Can SSM-120-S-SV-BE be used as a direct replacement for SSM-120-SM-SV-BE?
A: Yes. Both parts are electrically and mechanically equivalent. They share identical specifications for position count, pitch, contact ratings, voltage ratings, operating temperature, and all material properties. The difference in part number suffix (SM vs. S) reflects internal design designation only and does not affect functional compatibility.
Q: What are the critical parameters that define substitution eligibility?
A: Substitution is valid when the following parameters match: 20-position count, 0.100" (2.54mm) pitch, receptacle bottom-entry configuration, female socket contacts, surface mount termination, 5.2A per contact current rating, 405VAC/572VDC voltage rating, -55°C to 125°C operating temperature, gold mating contact finish, and LCP insulation material.
Q: Are there any packaging or compliance differences between these parts?
A: Both parts are supplied in tube packaging and are ROHS3 compliant with identical moisture sensitivity levels (MSL 1 - Unlimited). No compliance or packaging differences exist.
Q: What is the mating pitch and how does it affect compatibility?
A: The mating pitch is 0.100" (2.54mm), which defines the spacing between contact positions. Both parts maintain this identical pitch, ensuring mechanical and electrical compatibility with mating connectors designed for this standard spacing.
Q: Can these connectors be used in high-temperature applications?
A: Yes. Both parts are rated for operating temperatures from -55°C to 125°C, making them suitable for industrial and commercial applications within this temperature range.
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