Equivalent & Substitute Parts for 55508-332 Rectangular Connector

Part Overview

The Amphenol ICC 55508-332 is a 32-position receptacle connector in the Minitek® 2.00mm series, designed for board-to-board surface mount applications. This part operates at -55°C to 125°C with a 2A current rating and 200V voltage rating, suitable for general purpose, industrial, and medical applications. The 55508-332 is classified as obsolete, necessitating identification of active equivalent and substitute components to maintain design continuity and ensure supply chain availability.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	32
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
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
Current Rating	2A
Voltage Rating	200V
Insulation Material	Plastic
Contact Material	Phosphor Bronze
Contact Shape	Square
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 55508-332 is determined by strict equivalence in the following critical parameters: 32-position count, 0.079" (2.00mm) mating pitch, 2-row configuration with 0.079" row spacing, surface mount termination, push-pull fastening, female socket contact type, and board-to-board style. All substitute parts maintain these core electrical and mechanical specifications.

The substitute parts are grouped into two categories:

Category 1: Direct Amphenol ICC Equivalent The 55508-332LF is the active production equivalent from the same manufacturer, differing only in contact finish post material (tin instead of tin-lead) and RoHS compliance status. This part maintains identical mechanical dimensions and electrical performance.

Category 2: Samtec CLT Series Alternatives The Samtec CLT-116 series provides functional equivalence with variations in insulation material (liquid crystal polymer instead of plastic), contact finish thickness, and available packaging options. These parts accommodate different connector entry configurations (standard, bottom entry) and assembly methods (tube, tape & reel, pick and place).

Parameter Comparison

Parameter	55508-332	55508-332LF	CLT-116-02-F-D	CLT-116-02-F-D-A	CLT-116-02-F-D-BE	CLT-116-02-F-D-BE-A
Manufacturer	Amphenol ICC	Amphenol ICC	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Number of Positions	32	32	32	32	32	32
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)
Number of Rows	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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
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
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Contact Shape	Square	Square	Square	Square	Square	Square
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement with Amphenol ICC: The 55508-332LF is the primary substitute for the obsolete 55508-332. Both parts are from Amphenol ICC and maintain identical mechanical and electrical specifications. The 55508-332LF is in active production status with RoHS compliance, making it the preferred choice for new designs and production continuity. Contact finish post material differs (tin versus tin-lead), but this does not affect electrical performance or mechanical compatibility.

For Alternative Samtec CLT Series Selection: The Samtec CLT-116 series provides functional equivalence with higher current rating capability (4.1A per contact versus 2A). Selection within the CLT series depends on connector entry configuration and packaging requirements:

CLT-116-02-F-D: Standard top-entry configuration in tube packaging
CLT-116-02-F-D-A: Standard top-entry with board guide feature in tube packaging
CLT-116-02-F-D-BE: Bottom-entry configuration in tube packaging
CLT-116-02-F-D-BE-A: Bottom-entry with board guide feature in tube packaging
CLT-116-02-F-D-A-K-TR and CLT-116-02-F-D-BE-A-K-TR: Tape & reel packaging with pick-and-place features for automated assembly

All Samtec CLT variants are ROHS3 compliant and in active production. Insulation material is liquid crystal polymer (LCP) instead of plastic, and contact finish thickness is 3.00µin (0.076µm) versus 15.0µin (0.38µm) on the original part.

Frequently Asked Questions (FAQ)

Q: Can the 55508-332LF be used as a direct drop-in replacement for the 55508-332? A: Yes. The 55508-332LF maintains identical mechanical dimensions, electrical ratings, and connector interface specifications. The only differences are contact finish post material (tin instead of tin-lead) and RoHS compliance status. Both parts are from Amphenol ICC and are mechanically and electrically interchangeable.

Q: What are the key differences between Amphenol ICC and Samtec CLT series connectors? A: Both maintain the same 32-position count, 0.079" (2.00mm) pitch, and push-pull fastening. Samtec CLT series uses liquid crystal polymer insulation instead of plastic, provides higher current rating (4.1A per contact), and offers additional configuration options including bottom-entry and board guide variants. Samtec parts are ROHS3 compliant.

Q: Does the higher current rating of Samtec CLT series (4.1A per contact) affect compatibility? A: No. Higher current rating indicates greater capability and does not affect mechanical or electrical compatibility. The CLT series can be used in applications designed for the 2A rating of the original 55508-332.

Q: What packaging options are available for the Samtec CLT-116 series? A: Samtec CLT-116 connectors are available in tube packaging and tape & reel (TR) packaging. Tape & reel variants include pick-and-place features (designated with -K suffix) for automated assembly processes.

Q: Are there connector entry configuration differences between substitute parts? A: Yes. Standard variants (CLT-116-02-F-D) feature top-entry mating. Bottom-entry variants (CLT-116-02-F-D-BE) accommodate different PCB layout requirements. Board guide variants (designated with -A suffix) provide additional mechanical alignment during mating.

Q: What is the significance of the board guide feature (-A designation)? A: The board guide feature provides mechanical alignment assistance during connector mating. This is a functional enhancement that does not affect electrical performance or basic mechanical compatibility.

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