Equivalent & Substitute Parts for 55508-316TR

Part Overview

The Amphenol ICC 55508-316TR is a 16-position receptacle connector in the Minitek® 2.00mm series, designed for board-to-board surface mount applications. This connector features 0.079" (2.00mm) pitch, gold-plated mating contacts, and push-pull fastening. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Alternatives are available from both Amphenol ICC and Samtec Inc. with active product status and improved compliance ratings.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	16
Pitch - Mating	0.079" (2.00mm)
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
Current Rating	2A (main part); 4.1A per contact (Samtec alternatives)
Voltage Rating	200V (main part)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following core parameters: 16-position configuration, 0.079" (2.00mm) pitch, 2-row layout with 0.079" row spacing, surface mount solder termination, push-pull fastening, gold mating contact finish, and -55°C to 125°C operating temperature range. All listed substitutes meet these baseline requirements.

Substitutes are grouped into three categories:

Direct Amphenol ICC Equivalent: 55508-316TRLF differs from the main part only in packaging (bulk vs. tape & reel) and contact finish post material (tin vs. tin-lead). Product status is active with RoHS compliance.

Samtec CLT Series - Standard Configuration: CLT-108-02-F-D, CLT-108-02-F-D-A, CLT-108-02-F-D-A-P, and CLT-108-02-F-D-A-P-TR provide top-entry receptacle designs with board guide options and pick-and-place features. These parts feature liquid crystal polymer (LCP) insulation and higher current ratings (4.1A per contact).

Samtec CLT Series - Bottom Entry Configuration: CLT-108-02-F-D-BE, CLT-108-02-F-D-BE-A, CLT-108-02-F-D-BE-A-K, and CLT-108-02-F-D-BE-A-K-TR provide bottom-entry receptacle designs for applications requiring different PCB routing. These variants include board guide and pick-and-place options with the same electrical and thermal specifications as standard CLT configurations.

Parameter Comparison

Parameter	55508-316TR (Main)	55508-316TRLF	CLT-108-02-F-D	CLT-108-02-F-D-A	CLT-108-02-F-D-A-P-TR	CLT-108-02-F-D-BE	CLT-108-02-F-D-BE-A-K-TR
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle, Bottom Entry	Receptacle, Bottom Entry
Number of Positions	16	16	16	16	16	16	16
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Number of Rows	2	2	2	2	2	2	2
Row Spacing - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness - Mating	15.0µin (0.38µm)	15.0µin (0.38µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)
Insulation Color	Black	Black	Black	Black	Black	Black	Black
Insulation Height	0.091" (2.30mm)	0.091" (2.30mm)	0.083" (2.10mm)	0.083" (2.10mm)	0.083" (2.10mm)	0.083" (2.10mm)	0.083" (2.10mm)
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating	2A	2A	4.1A per Contact	4.1A per Contact	4.1A per Contact	4.1A per Contact	4.1A per Contact
Insulation Material	Plastic	Plastic	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement with Minimal Design Changes: The 55508-316TRLF from Amphenol ICC provides the closest functional equivalence to the obsolete 55508-316TR. Both parts share identical electrical and mechanical specifications within the Minitek® 2.00mm series. The primary difference is active product status and RoHS compliance. This option is suitable when existing designs require no modification and packaging format (bulk vs. tape & reel) is acceptable.

For Enhanced Performance and Long-Term Availability: Samtec CLT-108 series receptacles offer active product status, ROHS3 compliance, and higher current ratings (4.1A per contact vs. 2A). The CLT series uses liquid crystal polymer insulation, providing improved dimensional stability and environmental resistance compared to standard plastic. These parts are recommended for new designs or redesigns where performance margin and supply chain continuity are priorities.

For Top-Entry Applications: CLT-108-02-F-D and variants (with or without board guide and pick-and-place features) maintain standard receptacle entry orientation. CLT-108-02-F-D-A-P-TR in tape & reel packaging is optimized for automated assembly processes.

For Bottom-Entry Applications: CLT-108-02-F-D-BE and variants accommodate PCB designs requiring bottom-side connector entry. CLT-108-02-F-D-BE-A-K-TR in cut tape format provides the highest inventory availability (5,837 pcs) and includes both board guide and pick-and-place features.

Compliance Considerations: All active substitutes meet UL94 V-0 flammability requirements and operate across the full -55°C to 125°C temperature range. Samtec CLT parts carry ROHS3 certification, while the Amphenol ICC 55508-316TRLF is RoHS compliant. The main part (55508-316TR) is RoHS non-compliant and should not be used in new designs subject to RoHS regulations.

Frequently Asked Questions (FAQ)

Q: Can the 55508-316TRLF directly replace the obsolete 55508-316TR?

A: Yes. Both parts share identical connector type, position count, pitch, row configuration, mounting method, fastening type, and operating temperature range. The 55508-316TRLF is the active equivalent with RoHS compliance and bulk packaging. Electrical and mechanical compatibility is complete.

Q: What are the key differences between Amphenol ICC and Samtec CLT substitutes?

A: The Amphenol ICC 55508-316TRLF maintains the original Minitek® 2.00mm series design with plastic insulation and 2A current rating. Samtec CLT-108 series uses liquid crystal polymer insulation, supports 4.1A per contact, and offers both top-entry and bottom-entry configurations. All meet the core 16-position, 2.00mm pitch, push-pull, gold-plated specification.

Q: Does insulation height difference affect compatibility?

A: The main part and 55508-316TRLF both have 0.091" (2.30mm) insulation height. Samtec CLT parts have 0.083" (2.10mm) insulation height. This difference may affect mating clearance in space-constrained designs. Verify PCB layout and mating connector specifications before substitution.

Q: What is the difference between CLT-108-02-F-D-A and CLT-108-02-F-D-A-P?

A: CLT-108-02-F-D-A includes a board guide feature. CLT-108-02-F-D-A-P adds pick-and-place capability for automated assembly. Both are electrically and mechanically identical otherwise. Choose based on assembly process requirements.

Q: What does "Bottom Entry" mean in CLT-108-02-F-D-BE variants?

A: Bottom entry refers to connector orientation where the mating interface is accessible from the underside of the PCB. This configuration accommodates designs where top-side space is limited or where routing requirements necessitate bottom-side connector placement. Electrical and mechanical specifications remain identical to top-entry CLT variants.

Q: Are packaging formats (Tube, Tape & Reel, Cut Tape) interchangeable?

A: Packaging formats do not affect electrical or mechanical compatibility. They differ only in quantity per package and handling method. Tube packaging is suitable for manual assembly or small-volume production. Tape & Reel (TR) and Cut Tape (CT) formats are optimized for automated pick-and-place assembly. Select based on production volume and assembly equipment capability.

Q: Why do Samtec CLT parts have lower gold plating thickness (3.00µin vs. 15.0µin)?

A: Both plating thicknesses meet industry standards for gold-plated contacts and provide equivalent electrical performance and corrosion resistance. The thinner Samtec plating is sufficient for the specified operating conditions and current ratings. No functional difference exists for standard applications.

Q: Can I use a CLT-108 part in a design originally specified for 55508-316TR?

A: Yes, provided the following conditions are met: PCB layout accommodates the 0.083" (2.10mm) insulation height of CLT parts; mating connector is compatible with CLT receptacle geometry; application current requirements do not exceed 2A per contact (or can benefit from the 4.1A rating); and bottom-entry vs. top-entry orientation matches the design. Mechanical fit and electrical compatibility must be confirmed for the specific application.

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