SSW-140-21-G-S Equivalent & Substitute Parts

Part Overview

The SSW-140-21-G-S is a 40-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 forked contacts, solder termination, and push-pull fastening. The part is currently active in production with 696 units in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are required for design flexibility, inventory management, or supply chain continuity.

Substiute Parts

SSW-140-21-G-S

Samtec Inc.In Stock: 746SSW-140-21-G-S Datasheet

Current PartRFQ

SSW-140-01-G-S

Samtec Inc.In Stock: 868SSW-140-01-G-S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SSW-140-21-G-S is determined by strict equivalence across the following critical parameters:

• Connector Type & Position Count: Receptacle configuration with 40 positions
• Pitch & Mounting: 0.100" (2.54mm) mating pitch with through-hole PCB mounting
• Contact System: Forked contact type with gold plating on mating surfaces
• Electrical Performance: 4.7A per contact current rating
• Thermal & Compliance: Operating range -55°C ~ 125°C, UL94 V-0 flammability, ROHS3 compliance

The substitute part SSW-140-01-G-S meets all these criteria, differing only in internal design designation (suffix -01 vs. -21) while maintaining identical functional and electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both SSW-140-21-G-S and SSW-140-01-G-S are active production parts with full ROHS3 compliance and identical electrical, mechanical, and thermal specifications. Selection between these parts should be based on:

• Inventory Availability: SSW-140-01-G-S has higher stock (808 units vs. 696 units)
• Design Documentation: Verify that the internal design designation (-01 vs. -21) does not affect PCB layout, mating interface, or assembly procedures
• Supply Chain: Both parts are manufactured by Samtec Inc. and carry equivalent regulatory certifications (UL94 V-0, EAR99, ROHS3)

No additional testing or qualification is required when substituting between these parts, as all functional parameters are identical.

Frequently Asked Questions (FAQ)

Q: Can SSW-140-01-G-S be used as a direct replacement for SSW-140-21-G-S?

A: Yes. Both parts are 40-position receptacle connectors with identical pitch (0.100"), mounting type (through-hole), contact configuration (forked, gold-plated), current rating (4.7A per contact), and operating temperature range (-55°C ~ 125°C). The suffix difference (-01 vs. -21) reflects internal design variants within the SSW series but does not affect electrical or mechanical compatibility.

Q: Are there any differences in PCB footprint or mating interface?

A: No. Both parts share identical insulation height (0.335"), contact length (0.104"), and pitch specifications. PCB footprints and mating interfaces are equivalent.

Q: Do both parts meet the same compliance standards?

A: Yes. Both SSW-140-21-G-S and SSW-140-01-G-S are ROHS3 compliant, UL94 V-0 rated, and classified under ECCN EAR99. Regulatory and environmental compliance is identical.

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. Selection may be based on current inventory levels or existing supply chain relationships with Samtec Inc. Both parts are active production items with equivalent long-term availability.

Q: Is there a performance difference in current-carrying capacity?

A: No. Both parts are rated for 4.7A per contact with identical contact material (phosphor bronze) and finish specifications (gold plating at 20.0µin mating surface, 3.00µin post).