Amphenol ICC 68402-318 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 68402-318 is an 18-position receptacle connector with 0.100" (2.54mm) pitch, designed for surface mount board-to-board applications. This connector features gold-plated mating contacts, operates across -65°C to 125°C, and is rated for 1000V. The product is currently obsolete, making equivalent substitute parts necessary for ongoing system maintenance, repairs, and legacy design support.

Substiute Parts

68402-318

Amphenol ICC (FCI)In Stock: 90668402-318 Datasheet

Current PartRFQ

NPPC181KFXD-RC

Sullins Connector SolutionsIn Stock: 989NPPC181KFXD-RC Datasheet

MFR RecommendedRFQ

NPTC181KFXD-RC

Sullins Connector SolutionsIn Stock: 720NPTC181KFXD-RC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 68402-318 is based on the following critical parameters that must align for functional compatibility:

• Connector Position Count: 18 positions (exact match required)
• Mating Pitch: 0.100" (2.54mm) (exact match required)
• Mounting Configuration: Surface mount (exact match required)
• Contact Type: Female socket (exact match required)
• Board-to-Board Style: Maintained across all substitutes
• Fastening Mechanism: Push-pull (exact match required)
• Contact Material: Phosphor bronze (exact match required)
• Flammability Rating: UL94 V-0 (maintained)

The two identified substitutes—NPPC181KFXD-RC and NPTC181KFXD-RC from Sullins Connector Solutions—meet these core electrical and mechanical parameters. Both are header connectors with top or bottom entry configuration, maintaining the same 18-position, 0.100" pitch, surface mount, push-pull design. The primary differences are contact finish (gold versus tin) and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

NPPC181KFXD-RC is the preferred substitute when gold contact finish is required for mating surfaces. This part maintains gold plating on both mating and post contacts, providing superior corrosion resistance and contact reliability in applications requiring extended shelf life or high-reliability environments. The part is ROHS3 compliant and actively manufactured.

NPTC181KFXD-RC is the appropriate substitute when tin contact finish is acceptable. This part provides cost-effective substitution with tin plating on both mating and post contacts. It is also ROHS3 compliant and actively manufactured.

Both substitutes operate within -40°C to 105°C, which is narrower than the original 68402-318 range of -65°C to 125°C. Applications requiring operation below -40°C or above 105°C must evaluate thermal performance independently. Both substitutes are rated for 250V, lower than the original 1000V rating; applications requiring 1000V operation must source alternative parts.

The insulation height difference (0.310" original versus 0.280" substitutes) must be verified for mechanical clearance in the target application. Both substitutes use polyamide insulation material instead of the original polyphenylene sulfide, which may affect chemical resistance in specific environments.

Frequently Asked Questions (FAQ)

Q: Can NPPC181KFXD-RC and NPTC181KFXD-RC be used interchangeably with the 68402-318?

A: Both parts share the same 18-position, 0.100" pitch, surface mount, push-pull configuration and are mechanically compatible. However, contact finish differences (gold versus tin) and operating temperature/voltage rating differences must be evaluated for the specific application. Verify that the narrower operating temperature range (-40°C to 105°C) and lower voltage rating (250V) meet system requirements.

Q: What is the difference between NPPC181KFXD-RC and NPTC181KFXD-RC?

A: The primary difference is contact finish. NPPC181KFXD-RC features gold plating on both mating and post contacts, while NPTC181KFXD-RC features tin plating on both surfaces. Gold finish provides superior corrosion resistance; tin finish is cost-effective for standard applications. Both are ROHS3 compliant and rated for 3A at 250V.

Q: Why is the operating temperature range narrower in the substitutes?

A: The original 68402-318 operates from -65°C to 125°C, while both Sullins substitutes operate from -40°C to 105°C. This reflects differences in insulation material (PPS glass-filled versus polyamide) and connector design. Applications requiring the full -65°C to 125°C range must source alternative parts or conduct thermal validation testing.

Q: Are the substitutes RoHS compliant?

A: Yes. Both NPPC181KFXD-RC and NPTC181KFXD-RC are ROHS3 compliant. The original 68402-318 is RoHS non-compliant. This compliance difference may be required for new designs or regulatory requirements.

Q: What is the voltage rating difference, and does it matter?

A: The original 68402-318 is rated for 1000V, while both substitutes are rated for 250V. For applications operating at voltages above 250V, the substitutes are not suitable. Verify the actual operating voltage in your application before selecting a substitute.

Q: Does the insulation height difference affect compatibility?

A: The original part has an insulation height of 0.310" (7.87mm), while substitutes measure 0.280" (7.10mm). This 0.030" difference must be verified for mechanical clearance in the target PCB layout and mating connector design. Measure available space before committing to substitution.

Q: What is the current rating for these connectors?

A: The original 68402-318 does not specify a current rating. Both Sullins substitutes are rated for 3A per contact. Verify that 3A meets the application's current requirements.