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Amphenol ICC 55508-140LF Equivalent & Substitute Parts
Part Overview
The Amphenol ICC 55508-140LF is a 40-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 mating, gold-plated female socket contacts, and push-pull fastening. The part is active in production with 853 units in current inventory. Equivalent and substitute parts are identified to support design flexibility, inventory optimization, and supply chain continuity for applications requiring 40-position rectangular connectors with matching electrical and mechanical specifications.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Connector Type | Receptacle |
| Contact Type | Female Socket |
| Number of Positions | 40 |
| 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 |
| Voltage Rating | 200V |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the 55508-140LF are identified from the Samtec Inc. CLT series based on strict electrical and mechanical parameter matching. All substitute parts maintain the following core compatibility criteria:
- 40-position receptacle configuration
- 0.079" (2.00mm) pitch mating and row spacing
- 2-row board-to-board layout
- Surface mount solder termination
- Push-pull fastening mechanism
- Female socket contact type
- Square contact geometry
- Phosphor bronze contact material
- Black insulation color
- Operating temperature range -55°C ~ 125°C
- UL94 V-0 flammability rating
- MSL 1 (Unlimited) moisture sensitivity
Substitute parts are grouped by contact finish configuration (tin post vs. gold post), entry style (standard vs. bottom entry), and optional features (board guide, pick and place). All substitute parts are manufactured by Samtec Inc. and maintain active product status with ROHS3 compliance.
Parameter Comparison
| Parameter | 55508-140LF (Amphenol ICC) | CLT-120-02-F-D | CLT-120-02-F-D-BE | CLT-120-02-F-D-BE-A | CLT-120-02-G-D | CLT-120-02-G-D-BE | CLT-120-02-G-D-BE-A | CLT-120-02-L-D | CLT-120-02-L-D-A | CLT-120-02-L-D-A-P | CLT-120-02-L-D-BE |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Amphenol ICC | Samtec Inc. | Samtec Inc. | Samtec Inc. | Samtec Inc. | Samtec Inc. | Samtec Inc. | Samtec Inc. | Samtec Inc. | Samtec Inc. | Samtec Inc. |
| Number of Positions | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
| 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 |
| Termination | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder |
| 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 Finish - Mating | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold |
| Contact Finish Thickness - Mating | 30.0µin (0.76µm) | 3.00µin (0.076µm) | 3.00µin (0.076µm) | 3.00µin (0.076µm) | 10.0µin (0.25µm) | 10.0µin (0.25µm) | 10.0µin (0.25µm) | 10.0µin (0.25µm) | 10.0µin (0.25µm) | 10.0µin (0.25µm) | 10.0µin (0.25µm) |
| Insulation Color | Black | Black | Black | Black | Black | Black | Black | Black | Black | Black | Black |
| Insulation Height | 0.091" (2.30mm) | 0.083" (2.10mm) | 0.083" (2.10mm) | 0.083" (2.10mm) | 0.083" (2.10mm) | 0.083" (2.10mm) | 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 | -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 |
| Contact Shape | Square | Square | Square | Square | Square | Square | Square | Square | Square | Square | Square |
| Contact Material | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze |
| Insulation Material | 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) | Liquid Crystal Polymer (LCP) |
| Current Rating | 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 | 4.1A per Contact |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
All substitute parts maintain active product status and meet or exceed the electrical and mechanical requirements of the 55508-140LF. Selection among substitute options is determined by specific application requirements:
Standard Entry Configuration: CLT-120-02-F-D, CLT-120-02-G-D, and CLT-120-02-L-D provide standard top-entry receptacle designs with equivalent mating pitch and row spacing.
Bottom Entry Configuration: CLT-120-02-F-D-BE, CLT-120-02-F-D-BE-A, CLT-120-02-G-D-BE, CLT-120-02-G-D-BE-A, and CLT-120-02-L-D-BE accommodate bottom-entry board layouts where cable or connector insertion occurs from the board underside.
Board Guide Feature: CLT-120-02-F-D-BE-A, CLT-120-02-G-D-BE-A, CLT-120-02-L-D-A, and CLT-120-02-L-D-A-P include board guide features for enhanced mechanical alignment and stability during mating operations.
Pick and Place Feature: CLT-120-02-L-D-A-P includes pick and place optimization for automated assembly processes.
Contact Finish - Post: Tin post finish (CLT-120-02-F-D, CLT-120-02-L-D, CLT-120-02-L-D-A, CLT-120-02-L-D-A-P, CLT-120-02-L-D-BE) or gold post finish (CLT-120-02-G-D, CLT-120-02-G-D-BE, CLT-120-02-G-D-BE-A) selection depends on soldering process compatibility and post-solder cleaning requirements.
Compliance: All substitute parts are ROHS3 compliant and maintain MSL 1 (Unlimited) moisture sensitivity rating, supporting deployment in industrial, medical, and general-purpose applications across the specified operating temperature range.
Frequently Asked Questions (FAQ)
Q: Are all CLT-120 series parts direct replacements for the 55508-140LF?
A: All listed CLT-120 series parts share the core mechanical and electrical specifications: 40-position receptacle, 0.079" (2.00mm) pitch, 2-row configuration, surface mount solder termination, and push-pull fastening. Compatibility depends on specific board layout requirements (standard vs. bottom entry) and post-solder finish requirements (tin vs. gold).
Q: What is the difference between standard entry and bottom entry configurations?
A: Standard entry receptacles (CLT-120-02-F-D, CLT-120-02-G-D, CLT-120-02-L-D) accept mating connectors from the top of the board. Bottom entry receptacles (CLT-120-02-F-D-BE, CLT-120-02-F-D-BE-A, CLT-120-02-G-D-BE, CLT-120-02-G-D-BE-A, CLT-120-02-L-D-BE) are designed for applications where the mating connector approaches from the board underside. Board layout and mechanical clearance requirements determine which configuration is appropriate.
Q: What does the board guide feature provide?
A: The board guide feature (indicated by "-A" suffix in part numbers CLT-120-02-F-D-BE-A, CLT-120-02-G-D-BE-A, CLT-120-02-L-D-A, CLT-120-02-L-D-A-P) provides mechanical alignment assistance during connector mating, reducing insertion force variation and improving repeatability in high-volume assembly environments.
Q: How do contact finish options affect soldering and assembly?
A: Tin post finish (CLT-120-02-F-D, CLT-120-02-L-D series) is compatible with standard lead-free solder processes. Gold post finish (CLT-120-02-G-D series) provides enhanced corrosion resistance and is suitable for applications requiring extended shelf life or exposure to corrosive environments. Post-solder cleaning requirements may differ between finishes.
Q: What is the significance of the current rating difference between the 55508-140LF and CLT-120 series?
A: The 55508-140LF is rated at 2A, while all CLT-120 series substitutes are rated at 4.1A per contact. This represents a higher current capacity in the substitute parts and does not restrict compatibility for applications designed for the original 2A specification.
Q: Are there inventory considerations when selecting among substitute parts?
A: Current inventory levels vary across substitute part numbers. CLT-120-02-G-D-BE (1183 units), CLT-120-02-L-D-A (1216 units), and CLT-120-02-F-D-BE (1175 units) maintain the highest stock levels. Selection based on application requirements should be the primary criterion, with inventory availability as a secondary consideration.
Q: What is the difference between insulation materials used in the 55508-140LF and CLT-120 series?
A: The 55508-140LF uses plastic insulation material, while all CLT-120 series substitutes use Liquid Crystal Polymer (LCP). LCP provides superior dimensional stability, lower moisture absorption, and enhanced mechanical properties at elevated temperatures, supporting the same operating temperature range (-55°C ~ 125°C) with improved performance characteristics.
Q: Are all substitute parts REACH compliant?
A: Most CLT-120 series parts are REACH Unaffected. CLT-120-02-L-D-A is REACH Affected. The original 55508-140LF is REACH Affected. Application requirements and regulatory obligations in target markets should guide selection when REACH compliance status is a consideration.
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