SSQ-105-21-S-S Equivalent & Substitute Parts

Part Overview

The SSQ-105-21-S-S is a 5-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 -55°C to 125°C operation with UL94 V-0 flammability compliance. The part is currently active in production with 956 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	5
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
Insulation Material	Liquid Crystal Polymer (LCP)
Operating Temperature	-55°C ~ 125°C
Voltage Rating	465VAC, 655VDC
Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SSQ-105-21-S-S are identified based on the following critical parameters that determine functional interchangeability:

Connector Type & Position Count: All substitutes maintain 5-position receptacle configuration
Pitch & Mounting Interface: All substitutes use 0.100" (2.54mm) pitch with through-hole mounting
Contact Specifications: All substitutes feature forked contacts with gold mating finish (30.0µin) and tin post finish
Insulation Material & Dimensions: All substitutes use LCP insulation with matching 0.335" (8.51mm) insulation height
Electrical Ratings: All substitutes maintain 465VAC / 655VDC voltage rating and -55°C to 125°C operating temperature range
Compliance: All substitutes meet UL94 V-0 flammability and ROHS3 compliance requirements

The identified substitutes (SSQ-105-01-S-S and SSQ-105-01-SM-S) differ only in packaging designation and moisture sensitivity level, with no impact on electrical or mechanical performance.

Parameter Comparison

Parameter	SSQ-105-21-S-S	SSQ-105-01-S-S	SSQ-105-01-SM-S
Manufacturer	Samtec Inc.	Samtec Inc.	Samtec Inc.
Series	SSQ	SSQ	SSQ
Connector Type	Receptacle	Receptacle	Receptacle
Number of Positions	5	5	5
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Contact Type	Forked	Forked	Forked
Contact Finish - Mating	Gold (30.0µin)	Gold (30.0µin)	Gold (30.0µin)
Contact Finish - Post	Tin	Tin	Tin
Insulation Material	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
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
Voltage Rating	465VAC, 655VDC	465VAC, 655VDC	465VAC, 655VDC
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	956 Pcs	4097 Pcs	771 Pcs

Engineering Selection Recommendations

All three parts—SSQ-105-21-S-S, SSQ-105-01-S-S, and SSQ-105-01-SM-S—are active production components with ROHS3 compliance and UL94 V-0 flammability certification. Selection between these parts should be based on:

Availability: SSQ-105-01-S-S offers the highest inventory (4097 units) for applications requiring immediate procurement
Packaging Requirements: SSQ-105-21-S-S and SSQ-105-01-S-S are specified with bulk packaging; SSQ-105-01-SM-S packaging designation differs
Moisture Sensitivity: SSQ-105-21-S-S and SSQ-105-01-S-S are not applicable for MSL; SSQ-105-01-SM-S is rated MSL 1 (Unlimited), suitable for applications with extended storage or high-humidity environments

All three parts maintain identical electrical and mechanical specifications, ensuring direct functional substitution in circuit designs without redesign requirements.

Frequently Asked Questions (FAQ)

Q: Can SSQ-105-01-S-S be used as a direct replacement for SSQ-105-21-S-S?

A: Yes. Both parts share identical connector type, position count, pitch, mounting interface, contact specifications, insulation material, and electrical ratings. The parts are functionally interchangeable in all applications.

Q: What is the difference between SSQ-105-01-SM-S and the other two parts?

A: SSQ-105-01-SM-S differs only in packaging designation and moisture sensitivity level (MSL 1 Unlimited). All electrical and mechanical specifications remain identical. The MSL rating indicates suitability for extended storage without baking requirements.

Q: Are all three parts RoHS compliant?

A: Yes. All three parts meet ROHS3 compliance requirements and carry UL94 V-0 flammability certification.

Q: What is the mating pitch for these connectors?

A: All three parts use 0.100" (2.54mm) pitch, the standard spacing for board-to-board and cable connector applications in this series.

Q: Can these connectors be used in high-temperature applications?

A: Yes. All three parts are rated for -55°C to 125°C operating temperature range, suitable for industrial and automotive environments within this thermal specification.

Q: What contact finish specifications apply to these parts?

A: All three parts feature gold-plated mating contacts (30.0µin / 0.76µm thickness) and tin-plated posts for solder termination, ensuring reliable electrical contact and solderability.

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