SSW-125-01-S-S Equivalent & Substitute Parts

Part Overview

The SSW-125-01-S-S is a 25-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, forked contact geometry, and push-pull fastening. The part is currently active in production with 762 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in applications where the primary part becomes unavailable or when inventory constraints require alternative sourcing.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	25
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)
Insulation Color	Black
Number of Rows	1
Style	Board to Board or Cable
Operating Temperature Range	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SSW-125-01-S-S is determined by strict alignment of the following critical parameters:

Connector Type & Position Count: Must be a 25-position receptacle
Pitch & Mounting: 0.100" (2.54mm) pitch with through-hole solder termination
Fastening & Contact Finish: Push-pull fastening with gold-plated mating contacts at 30.0µin thickness
Insulation & Temperature: Black insulation with operating range supporting -55°C minimum and 125°C maximum
Compliance: ROHS3 compliance required

The identified substitute part 2-534237-3 (TE Connectivity AMP Connectors) meets these core electrical and mechanical criteria, enabling direct functional replacement in applications where the SSW-125-01-S-S is specified.

Parameter Comparison

Parameter	SSW-125-01-S-S (Samtec)	2-534237-3 (TE Connectivity)	Compatibility
Connector Type	Receptacle	Receptacle	Match
Number of Positions	25	25	Match
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	Match
Mounting Type	Through Hole	Through Hole	Match
Termination	Solder	Solder	Match
Fastening Type	Push-Pull	Push-Pull	Match
Contact Finish - Mating	Gold	Gold	Match
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	Match
Insulation Color	Black	Black	Match
Number of Rows	1	1	Match
Style	Board to Board or Cable	Board to Board or Cable	Match
Operating Temperature Range	-55°C ~ 125°C	-65°C ~ 125°C	Compatible (TE part exceeds minimum)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Insulation Height	0.335" (8.51mm)	0.340" (8.64mm)	Nominal variation
Contact Length - Post	0.104" (2.64mm)	0.115" (2.92mm)	Nominal variation
Current Rating (Amps)	4.7A per Contact	2A	TE part rated lower

Engineering Selection Recommendations

Both the SSW-125-01-S-S and 2-534237-3 are active production parts with ROHS3 compliance. The primary electrical and mechanical parameters align, including connector type, position count, pitch, mounting method, fastening mechanism, and contact finish specifications. The operating temperature range of the TE Connectivity substitute (-65°C ~ 125°C) exceeds the Samtec original (-55°C ~ 125°C), providing broader environmental capability.

Selection between these parts should account for the current rating differential: the Samtec SSW-125-01-S-S is rated at 4.7A per contact, while the TE Connectivity 2-534237-3 is rated at 2A per contact. Applications requiring current levels between 2A and 4.7A per contact must use the Samtec part. Applications operating within the 2A per contact limit may use either part based on availability and procurement requirements.

Minor dimensional variations exist in insulation height (0.005" difference) and contact post length (0.011" difference), which fall within standard manufacturing tolerances for this connector category and do not affect functional interchangeability in standard PCB applications.

Frequently Asked Questions (FAQ)

Q: Can the 2-534237-3 directly replace the SSW-125-01-S-S in all applications?

A: Direct replacement is possible when the application current requirement does not exceed 2A per contact. The SSW-125-01-S-S supports 4.7A per contact, while the TE Connectivity substitute is rated at 2A per contact. Verify your circuit current specifications before substitution.

Q: What are the key compatibility criteria for these connectors?

A: Both connectors share identical specifications for position count (25), pitch (0.100"), mounting type (through-hole), termination (solder), fastening (push-pull), mating contact finish (gold at 30.0µin), and insulation color (black). These parameters ensure mechanical and electrical interchangeability.

Q: Do the dimensional differences affect PCB layout?

A: The insulation height difference (0.005") and contact post length difference (0.011") are within standard manufacturing tolerances. PCB layouts designed for either connector will accommodate both parts without modification.

Q: Are both parts RoHS compliant?

A: Yes, both the SSW-125-01-S-S and 2-534237-3 are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: What is the difference in operating temperature range?

A: The Samtec SSW-125-01-S-S operates from -55°C to 125°C, while the TE Connectivity 2-534237-3 operates from -65°C to 125°C. The TE part provides a lower temperature capability of 10°C additional margin.

Q: How do the packaging formats differ?

A: The SSW-125-01-S-S is supplied in bulk packaging, while the 2-534237-3 is supplied in tube packaging. Verify packaging requirements for your assembly and inventory management processes.

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