SSQ-125-01-G-S Equivalent & Substitute Parts

Part Overview

The SSQ-125-01-G-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, push-pull fastening, and operates across -55°C to 125°C. The part is currently active in production and ROHS3 compliant, making it suitable for applications requiring reliable rectangular connector solutions with standard pitch spacing and solder termination.

Alternative models become necessary when inventory constraints occur, when specific packaging requirements differ, or when operational parameters of substitute parts align with application requirements while offering improved availability or cost efficiency.

Substiute Parts

SSQ-125-01-G-S

Samtec Inc.In Stock: 997SSQ-125-01-G-S Datasheet

Current PartRFQ

2-534237-3

TE Connectivity AMP ConnectorsIn Stock: 10022-534237-3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 2-534237-3 (TE Connectivity AMP Connectors) qualifies as an equivalent based on the following critical parameters:

• Connector Type & Position Count: Both are 25-position receptacles, matching the core functional requirement
• Pitch Specification: Both maintain 0.100" (2.54mm) mating pitch, ensuring mechanical and electrical compatibility with standard 0.1" spaced headers and plugs
• Mounting & Termination: Both use through-hole solder termination, compatible with identical PCB footprints
• Fastening Mechanism: Both employ push-pull fastening, maintaining consistent mating/unmating force characteristics
• Contact Material & Mating Finish: Both use phosphor bronze contacts with gold mating finish, supporting equivalent electrical performance and corrosion resistance
• Single Row Configuration: Both are single-row designs, maintaining identical board layout requirements
• Compliance: Both are ROHS3 compliant and carry EAR99 ECCN classification

Substitution is valid where application requirements do not mandate specific operating temperature ranges, voltage ratings, or contact finish thickness specifications beyond the provided parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the SSQ-125-01-G-S and 2-534237-3 are active production parts with ROHS3 compliance and EAR99 classification. Selection between these parts should be based on:

• Inventory Availability: SSQ-125-01-G-S has 929 units in stock; 2-534237-3 has 937 units in stock
• Packaging Format: SSQ-125-01-G-S is supplied in bulk; 2-534237-3 is supplied in tube packaging
• Operating Temperature Range: SSQ-125-01-G-S operates -55°C to 125°C; 2-534237-3 operates -65°C to 125°C, providing extended low-temperature capability
• Insulation Material: SSQ-125-01-G-S uses Liquid Crystal Polymer (LCP); 2-534237-3 uses polyester with glass fill, affecting mechanical and thermal properties
• Contact Finish Thickness: 2-534237-3 provides thicker gold plating (30.0µin vs. 20.0µin), potentially offering enhanced wear resistance
• Voltage Rating: SSQ-125-01-G-S specifies 465VAC/655VDC; 2-534237-3 does not specify voltage rating

Both parts maintain identical pitch, position count, mounting method, and fastening mechanism, ensuring PCB footprint and mating interface compatibility.

Frequently Asked Questions (FAQ)

Q: Can 2-534237-3 be used as a direct replacement for SSQ-125-01-G-S?

A: Yes, for applications where the operating temperature range of -55°C to 125°C is acceptable and voltage specifications do not exceed the SSQ-125-01-G-S ratings. Both connectors share identical pitch (0.100"), position count (25), mounting type (through-hole solder), and fastening mechanism (push-pull), ensuring mechanical and electrical compatibility at the PCB interface.

Q: What are the differences in insulation material between these parts?

A: SSQ-125-01-G-S uses Liquid Crystal Polymer (LCP), while 2-534237-3 uses polyester with glass fill. LCP typically offers superior thermal stability and lower moisture absorption, while glass-filled polyester provides good mechanical strength. Material selection depends on application environment and thermal cycling requirements.

Q: Does the difference in contact finish thickness affect performance?

A: 2-534237-3 provides 30.0µin (0.76µm) gold plating on mating contacts compared to 20.0µin (0.51µm) on SSQ-125-01-G-S. Thicker plating generally extends contact life under repeated mating cycles and provides enhanced corrosion resistance in harsh environments. For standard applications, both thicknesses meet industry requirements.

Q: Are there packaging considerations when switching between these parts?

A: SSQ-125-01-G-S is supplied in bulk packaging, while 2-534237-3 is supplied in tube packaging. Tube packaging may offer better protection during storage and handling but may require different integration into assembly processes. Verify compatibility with your procurement and assembly workflows.

Q: What is the significance of the extended operating temperature range in 2-534237-3?

A: 2-534237-3 operates from -65°C to 125°C, compared to -55°C to 125°C for SSQ-125-01-G-S. The extended low-temperature capability (-65°C vs. -55°C) may be beneficial for aerospace, military, or outdoor applications subject to extreme cold conditions. For standard industrial applications within -55°C to 125°C, both parts are equivalent.

Q: Why is voltage rating specified for SSQ-125-01-G-S but not for 2-534237-3?

A: Voltage ratings depend on connector design, contact spacing, and insulation material properties. SSQ-125-01-G-S explicitly specifies 465VAC and 655VDC ratings. The absence of specified voltage rating for 2-534237-3 does not indicate lower capability but reflects different manufacturer documentation practices. Consult TE Connectivity technical documentation for voltage specifications if this parameter is critical to your application.

Q: Are both parts suitable for high-reliability applications?

A: Both parts are active production items with ROHS3 compliance and carry EAR99 ECCN classification. Both use phosphor bronze contacts with gold mating finish and push-pull fastening for secure connections. Suitability for high-reliability applications depends on specific environmental and performance requirements beyond the provided parameters.