SSW-126-21-S-S Equivalent & Substitute Parts

Part Overview

The SSW-126-21-S-S is a 26-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 763 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.

Key Parameters

Parameter	Specification
Connector Type	Receptacle
Number of Positions	26
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Contact Type	Forked
Contact Finish - Mating	Gold (30.0µin / 0.76µm)
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

Substitute parts for the SSW-126-21-S-S are identified based on strict equivalence across the following critical parameters:

Connector Interface: 26-position receptacle with 0.100" (2.54mm) mating pitch
Contact Configuration: Forked contact type with gold mating finish and tin post finish
Electrical Performance: 4.7A per contact current rating and -55°C to 125°C operating temperature range
Mechanical Mounting: Through-hole solder termination with push-pull fastening
Material Compliance: Liquid Crystal Polymer insulation, UL94 V-0 flammability rating, and ROHS3 compliance

The substitute parts SSW-126-01-S-S and SSW-126-01-SM-S meet all these criteria and are therefore electrically and mechanically interchangeable with the SSW-126-21-S-S in applications requiring a 26-position 0.100" pitch receptacle connector.

Parameter Comparison

Parameter	SSW-126-21-S-S	SSW-126-01-S-S	SSW-126-01-SM-S
Connector Type	Receptacle	Receptacle	Receptacle
Number of Positions	26	26	26
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Type	Forked	Forked	Forked
Mounting Type	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold (30.0µin)	Gold (30.0µin)	Gold (30.0µin)
Contact Finish - Post	Tin	Tin	Tin
Insulation Color	Black	Black	Black
Insulation Height	0.335" (8.51mm)	0.335" (8.51mm)	0.335" (8.51mm)
Contact Length - Post	0.104" (2.64mm)	0.104" (2.64mm)	0.104" (2.64mm)
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating	4.7A per Contact	4.7A per Contact	4.7A per Contact
Insulation Material	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Contact Shape	Square	Square	Square
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active
Inventory	763 Pcs	1111 Pcs	1138 Pcs

Engineering Selection Recommendations

All three parts—SSW-126-21-S-S, SSW-126-01-S-S, and SSW-126-01-SM-S—are active products manufactured by Samtec Inc. with full ROHS3 compliance and UL94 V-0 material certification. Selection between these parts should be based on inventory availability and lead time requirements, as all three are electrically and mechanically equivalent for 26-position 0.100" pitch receptacle connector applications.

The SSW-126-01-S-S and SSW-126-01-SM-S offer higher inventory levels (1111 and 1138 units respectively) compared to the SSW-126-21-S-S (763 units), making them preferable for applications with immediate procurement needs or high-volume production runs.

Frequently Asked Questions (FAQ)

Q: Are SSW-126-01-S-S and SSW-126-01-SM-S directly interchangeable with SSW-126-21-S-S?

A: Yes. All three parts share identical electrical specifications, mechanical dimensions, contact configurations, and material certifications. They are functionally equivalent 26-position receptacle connectors with 0.100" mating pitch and can be used interchangeably in circuit designs.

Q: What determines substitutability for the SSW-126-21-S-S?

A: Substitutability is determined by matching the following parameters: 26-position count, 0.100" (2.54mm) mating pitch, forked contact type, gold mating finish, tin post finish, 4.7A per contact current rating, -55°C to 125°C operating temperature, through-hole solder mounting, and push-pull fastening. All substitute parts meet these criteria.

Q: Do the substitute parts have the same compliance certifications?

A: Yes. SSW-126-01-S-S and SSW-126-01-SM-S are both ROHS3 compliant with UL94 V-0 material flammability ratings, matching the SSW-126-21-S-S specifications.

Q: What is the difference between SSW-126-01-S-S and SSW-126-01-SM-S?

A: Based on the provided specifications, both parts are identical in all electrical and mechanical parameters. The difference in part number designation (S-S versus SM-S) reflects internal Samtec manufacturing or packaging variations not detailed in the provided specifications.

Q: Can I use these connectors in high-temperature applications?

A: Yes. All three parts are rated for operating temperatures from -55°C to 125°C, making them suitable for industrial and automotive applications within this temperature range.

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