Amphenol ICC 55508-148 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 55508-148 is a 48-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 currently obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for new designs or production transitions.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	48
Pitch - Mating	0.079" (2.00mm)
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Contact Type	Female Socket
Contact Finish - Mating	Gold
Operating Temperature	-55°C ~ 125°C
Current Rating	2A (main part)
Voltage Rating	200V (main part)
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution for the 55508-148 is determined by strict equivalence across the following parameters: connector type (receptacle), contact configuration (48-position female socket), mating pitch (0.079" / 2.00mm), row count and spacing (2 rows at 0.079" spacing), mounting method (surface mount solder termination), contact finish (gold mating surface), operating temperature range (-55°C to 125°C), and flammability rating (UL94 V-0).

Substitute parts are grouped into two categories:

Direct Amphenol ICC Equivalent: 55508-148LF maintains identical electrical and mechanical specifications with updated RoHS compliance and active product status.

Cross-Manufacturer Alternatives (Samtec CLT Series): CLT-124-02 variants provide functional equivalence with differing insulation material (liquid crystal polymer vs. plastic), enhanced current rating per contact (4.1A vs. 2A), and configuration options including bottom entry and board guide features. These parts satisfy the core substitution parameters while offering design flexibility.

Parameter Comparison

Parameter	55508-148	55508-148LF	CLT-124-02-F-D	CLT-124-02-F-D-BE	CLT-124-02-F-D-BE-A
Manufacturer	Amphenol ICC	Amphenol ICC	Samtec Inc.	Samtec Inc.	Samtec Inc.
Product Status	Obsolete	Active	Active	Active	Active
Number of Positions	48	48	48	48	48
Pitch - Mating	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
Row Spacing - Mating	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
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)
Insulation Material	Plastic	Plastic	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Insulation Height	0.091" (2.30mm)	0.091" (2.30mm)	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
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating (Amps)	2A	2A	4.1A per Contact	4.1A per Contact	4.1A per Contact
RoHS Status	Non-compliant	Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Connector Type Detail	Standard	Standard	Standard	Bottom Entry	Bottom Entry, Board Guide

Engineering Selection Recommendations

For Direct Replacement: The 55508-148LF is the primary substitute for the obsolete 55508-148. Both parts maintain identical mechanical and electrical specifications within the Minitek® 2.00mm series. The 55508-148LF achieves RoHS compliance and active product status, making it suitable for new production and design transitions without PCB layout modifications.

For Enhanced Performance: Samtec CLT-124-02 series connectors provide functional equivalence with design advantages. The CLT series delivers 4.1A per contact versus 2A for the Amphenol part, supporting higher current applications. Liquid crystal polymer insulation in CLT parts offers improved thermal and mechanical stability compared to plastic insulation. The CLT-124-02-F-D-BE variant includes bottom entry configuration for applications requiring component access from the board underside. CLT-124-02-F-D-BE-A adds board guide features for enhanced mechanical stability during mating operations.

For Automated Assembly: CLT-124-02-F-D-BE-A-K and CLT-124-02-F-D-BE-A-K-TR variants include pick-and-place features. The tape-and-reel packaging (TR) option supports high-volume surface mount assembly workflows.

Compliance Considerations: The 55508-148 is RoHS non-compliant. Both 55508-148LF and all CLT-124-02 variants achieve RoHS compliance, meeting current regulatory requirements for industrial, medical, and general-purpose applications.

Frequently Asked Questions (FAQ)

Q: Can CLT-124-02 series connectors directly replace 55508-148 on existing PCBs?

A: CLT-124-02 parts maintain identical mating pitch (0.079" / 2.00mm), row configuration (2 rows at 0.079" spacing), and contact arrangement (48-position female socket). However, insulation height differs: 55508-148 measures 0.091" (2.30mm) while CLT-124-02 measures 0.083" (2.10mm). PCB layout verification is required to confirm clearance compatibility, particularly for components or traces near the connector footprint.

Q: What is the difference between CLT-124-02-F-D and CLT-124-02-F-D-BE?

A: The "-BE" suffix designates bottom entry configuration, allowing mating connector insertion from the board underside. Standard CLT-124-02-F-D connectors accept mating connectors from the top. Both variants maintain identical electrical specifications and mating pitch.

Q: Does the 55508-148LF require design changes compared to the original 55508-148?

A: No. The 55508-148LF is a direct equivalent with identical mechanical and electrical parameters. The primary difference is RoHS compliance status and active product availability. No PCB layout or design modifications are necessary.

Q: What does the "-A" suffix indicate in CLT-124-02-F-D-BE-A?

A: The "-A" suffix indicates board guide features, which provide mechanical alignment and stability during connector mating operations. This is beneficial for applications requiring precise positioning or frequent mating cycles.

Q: Are CLT-124-02 connectors suitable for medical applications?

A: CLT-124-02 parts are manufactured to support general-purpose applications. The original 55508-148 lists medical applications. Specific medical application requirements (biocompatibility, sterilization compatibility, regulatory certifications) must be verified against individual application standards and manufacturer documentation.

Q: What packaging options are available for high-volume production?

A: Amphenol ICC 55508-148LF is supplied in tube packaging. Samtec CLT-124-02-F-D-BE-A-K-TR and CLT-124-02-F-D-BE-K-TR are available in tape-and-reel (TR) packaging, optimized for automated surface mount assembly. Tube packaging is standard for lower-volume requirements.

Q: How do current ratings compare between substitute options?

A: The 55508-148 and 55508-148LF are rated at 2A. Samtec CLT-124-02 series connectors are rated at 4.1A per contact, providing higher current capacity for power-intensive applications. Voltage rating for the original part is 200V; CLT-124-02 variants do not specify voltage rating in the provided data.

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