SSW-121-21-S-S Equivalent & Substitute Parts

Part Overview

The SSW-121-21-S-S is a 21-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 product is currently active and ROHS3 compliant. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when inventory requirements necessitate additional suppliers.

Substiute Parts

SSW-121-21-S-S

Samtec Inc.In Stock: 780SSW-121-21-S-S Datasheet

Current PartRFQ

SSW-121-01-S-S

Samtec Inc.In Stock: 890SSW-121-01-S-S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SSW-121-21-S-S is determined by strict equivalence across the following critical parameters:

• Connector type (Receptacle)
• Number of positions (21)
• Pitch specification (0.100" / 2.54mm)
• Mounting method (Through Hole)
• Contact configuration (Forked contacts)
• Mating contact finish (Gold plating at 30.0µin thickness)
• Post contact finish (Tin)
• Current rating (4.7A per contact)
• Operating temperature range (-55°C ~ 125°C)
• Insulation material (Liquid Crystal Polymer)
• Flammability rating (UL94 V-0)
• Compliance status (ROHS3)

The substitute part SSW-121-01-S-S meets all these criteria and is therefore electrically and mechanically interchangeable with the main part number.

Parameter Comparison

Engineering Selection Recommendations

Both SSW-121-21-S-S and SSW-121-01-S-S are active products from Samtec Inc. with identical electrical and mechanical specifications. Selection between these part numbers should be based on inventory availability and procurement lead times. Both parts maintain ROHS3 compliance and UL94 V-0 flammability certification, ensuring regulatory conformance for applications requiring these standards. The substitute part SSW-121-01-S-S currently has higher inventory availability (798 pcs vs. 731 pcs), which may provide supply chain advantages for high-volume requirements.

Frequently Asked Questions (FAQ)

Q: Are SSW-121-21-S-S and SSW-121-01-S-S electrically interchangeable?

A: Yes. Both connectors have identical electrical specifications including 21 positions, 0.100" pitch, 4.7A per contact current rating, and -55°C to 125°C operating temperature range.

Q: Can these connectors be used interchangeably in PCB designs?

A: Yes. Both connectors share identical mechanical specifications: through-hole mounting, forked contact type, gold-plated mating contacts (30.0µin thickness), tin-plated posts, and Liquid Crystal Polymer insulation with UL94 V-0 rating.

Q: What is the difference between SSW-121-21-S-S and SSW-121-01-S-S?

A: These part numbers are functionally equivalent. The difference lies in the internal designation within Samtec's product line. Both are from the SSW series and share the same base product number (SSW-121).

Q: Are both parts RoHS compliant?

A: Yes. Both SSW-121-21-S-S and SSW-121-01-S-S are ROHS3 compliant.

Q: What is the contact material for these connectors?

A: Both connectors use phosphor bronze contacts with gold plating on the mating end (30.0µin thickness) and tin plating on the post end.