Amphenol ICC 55508-342 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 55508-342 is a 42-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 operates across -55°C to 125°C. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Substitute connectors must maintain electrical compatibility, mechanical fit, and thermal performance within the specified operating range.

Key Parameters

Parameter	Specification
Connector Type	Receptacle
Number of Positions	42
Pitch - Mating	0.079" (2.00mm)
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Fastening Type	Push-Pull
Contact Type	Female Socket
Contact Finish - Mating	Gold
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
Current Rating	2A
Voltage Rating	200V

Substitute Part Grouping Explanation

Substitution for the 55508-342 is based on the following critical parameters that must remain constant:

42-position configuration with 2-row layout
0.079" (2.00mm) mating pitch and row spacing
Receptacle connector type with female socket contacts
Surface mount solder termination
Push-pull fastening mechanism
Gold-plated mating contacts
Operating temperature range of -55°C to 125°C
UL94 V-0 flammability rating
Board-to-board style

The 55508-342LF is a direct Amphenol ICC substitute with identical mechanical and electrical specifications. The CLT series connectors from Samtec Inc. provide functional equivalence with enhanced current ratings and alternative contact finish options. Variations within the CLT series accommodate different mounting orientations (standard vs. bottom entry) and assembly features (board guide, pick and place compatibility).

Parameter Comparison

Parameter	55508-342	55508-342LF	CLT-121-02-F-D	CLT-121-02-F-D-A	CLT-121-02-F-D-A-K-TR	CLT-121-02-F-D-BE	CLT-121-02-F-D-BE-A	CLT-121-02-F-D-BE-A-P-TR	CLT-121-02-FM-D	CLT-121-02-FM-D-BE-A-K	CLT-121-02-G-D
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle	Receptacle, Bottom Entry	Receptacle
Number of Positions	42	42	42	42	42	42	42	42	42	42	42
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)	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	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)	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	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
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	-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	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	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)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Gold
RoHS Status	Non-compliant	Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

The 55508-342LF is the primary direct substitute, maintaining Amphenol ICC manufacturing and identical specifications while offering active product status and RoHS compliance. This part is suitable for applications requiring minimal design changes.

The Samtec CLT series provides functional equivalence across all critical mechanical and electrical parameters. CLT-121-02-F-D and CLT-121-02-F-D-A are standard-orientation receptacles suitable for direct replacement in existing designs. CLT-121-02-F-D-BE and CLT-121-02-F-D-BE-A variants accommodate bottom-entry configurations where board layout requires alternative mating orientation.

CLT-121-02-F-D-A-K-TR and CLT-121-02-F-D-BE-A-P-TR include pick-and-place features for automated assembly environments. CLT-121-02-FM-D and CLT-121-02-FM-D-BE-A-K provide ferromagnetic shielding options for applications requiring EMI mitigation.

CLT-121-02-G-D features gold-plated post contacts, differentiating it from standard tin-plated variants. All CLT series parts are ROHS3 compliant and carry active product status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can CLT series connectors directly replace the 55508-342 in existing designs?

A: Yes. All CLT series variants maintain the 42-position, 0.079" (2.00mm) pitch configuration, push-pull fastening, and operating temperature range. Mechanical and electrical compatibility is preserved. Verify mounting orientation (standard vs. bottom entry) matches your PCB layout.

Q: What is the difference between standard and bottom-entry CLT variants?

A: Standard CLT-121-02-F-D connectors mate from above the PCB. Bottom-entry variants (CLT-121-02-F-D-BE) mate from below, accommodating designs where top-side access is restricted. Both maintain identical electrical performance and pitch specifications.

Q: Why do CLT connectors have higher current ratings than the original 55508-342?

A: CLT series connectors are rated at 4.1A per contact versus 2A for the 55508-342. This reflects improved contact design and material selection. Higher current capacity does not affect compatibility; applications requiring 2A operation remain fully supported.

Q: What is the significance of the "-G-D" suffix in CLT-121-02-G-D?

A: The "-G-D" designation indicates gold-plated post contacts, whereas standard CLT variants feature tin-plated posts. This affects soldering characteristics and long-term contact resistance. Select based on your assembly process and reliability requirements.

Q: Are pick-and-place variants (CLT-121-02-F-D-A-K-TR) compatible with manual assembly?

A: Yes. Pick-and-place features enhance automated assembly efficiency but do not prevent manual placement. These variants are fully compatible with both manual and automated assembly processes.

Q: What is the difference between plastic and LCP insulation materials?

A: The original 55508-342 uses plastic insulation. CLT series connectors use Liquid Crystal Polymer (LCP), which offers superior thermal stability, dimensional consistency, and chemical resistance. LCP insulation supports the higher current ratings and improved performance of the CLT series.

Q: Is the 55508-342LF identical to the original 55508-342?

A: The 55508-342LF maintains all mechanical and electrical specifications of the original part. The primary difference is RoHS compliance (55508-342LF is compliant) and active product status, making it the preferred Amphenol ICC substitute for new designs and ongoing production.

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