SSQ-126-21-L-D Equivalent & Substitute Parts

Part Overview

The SSQ-126-21-L-D is a 52-position receptacle connector manufactured by Samtec Inc., designed for board-to-board or cable applications with 0.100" (2.54mm) pitch spacing. This connector features gold-plated mating contacts, through-hole solder termination, and push-pull fastening. The part is currently active in production with 1097 units in stock.

Substitute parts are identified when design requirements allow flexibility in connector variants while maintaining electrical and mechanical compatibility within the SSQ series platform.

Substiute Parts

SSQ-126-21-L-D

Samtec Inc.In Stock: 1194SSQ-126-21-L-D Datasheet

Current PartRFQ

SSQ-126-01-L-D

Samtec Inc.In Stock: 706SSQ-126-01-L-D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution within the SSQ-126 series is determined by the following critical parameters:

• Connector Type: Receptacle (fixed)
• Position Count: 52 positions (fixed)
• Pitch Spacing: 0.100" (2.54mm) mating pitch and 0.100" (2.54mm) row spacing (fixed)
• Mounting Configuration: Through-hole solder termination (fixed)
• Contact Finish: Gold-plated mating surface (fixed)
• Electrical Ratings: 465VAC / 655VDC voltage tolerance (fixed)
• Environmental Compliance: UL94 V-0 flammability and ROHS3 compliance (fixed)

The SSQ-126-01-L-D qualifies as a direct substitute because it maintains identical values across all critical electrical, mechanical, and environmental parameters. Variation occurs only in internal connector design codes (21 vs. 01), which do not affect form, fit, or function for applications requiring a 52-position gold-plated receptacle connector with 0.100" pitch spacing.

Parameter Comparison

Engineering Selection Recommendations

Both SSQ-126-21-L-D and SSQ-126-01-L-D are active production parts with full ROHS3 compliance and UL94 V-0 flammability certification. Selection between these parts is based on inventory availability and supply chain considerations rather than technical differentiation.

The SSQ-126-21-L-D maintains 1097 units in stock, while the SSQ-126-01-L-D has 694 units available. Both parts meet identical electrical specifications (465VAC / 655VDC), mechanical requirements (52-position, 0.100" pitch, through-hole solder), and environmental operating ranges (-55°C to 125°C).

For applications requiring immediate availability or higher stock levels, the SSQ-126-21-L-D is preferred. For applications where the substitute variant is already qualified in existing designs, the SSQ-126-01-L-D provides equivalent performance.

Frequently Asked Questions (FAQ)

Q: Can SSQ-126-01-L-D be used as a direct replacement for SSQ-126-21-L-D?

A: Yes. Both parts are 52-position receptacle connectors with identical electrical ratings (465VAC / 655VDC), mechanical pitch (0.100"), mounting type (through-hole solder), and environmental certifications (UL94 V-0, ROHS3). The design code variation (21 vs. 01) does not affect form, fit, or function.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution is valid when the following parameters remain constant: connector type (receptacle), position count (52), mating pitch (0.100"), row spacing (0.100"), mounting method (through-hole solder), contact finish (gold), voltage rating (465VAC / 655VDC), and flammability rating (UL94 V-0).

Q: Are there any compliance differences between these parts?

A: No. Both parts carry identical ROHS3 compliance status and UL94 V-0 flammability certification. Both are active production parts with no known restrictions.

Q: What is the difference between SSQ-126-21-L-D and SSQ-126-01-L-D?

A: The parts differ only in internal design variant codes (21 vs. 01). All electrical, mechanical, and environmental specifications are identical. The difference does not affect PCB layout, mating interface, or electrical performance.

Q: Can these connectors be used interchangeably in the same PCB design?

A: Yes. Both connectors share identical footprints, pin configurations, and electrical characteristics. No PCB redesign or re-qualification is required when substituting between these parts.