Molex 0878311821 Equivalent & Substitute Parts

Part Overview

The Molex 0878311821 is an 18-position vertical rectangular connector header with 2.00mm pitch, designed for board-to-board or cable applications. This through-hole mounted component features shrouded 4-wall construction with push-pull fastening and is rated for 2A at 125V across an operating temperature range of -55°C to 105°C. The part is currently active in production with 1006 units in stock. Equivalent parts are identified to support procurement flexibility, design continuity, and supply chain resilience when the primary part becomes unavailable or when alternative sourcing is required.

Substiute Parts

0878311821

MolexIn Stock: 10810878311821 Datasheet

Current PartRFQ

10075025-G01-18ULF

Amphenol ICC (FCI)In Stock: 99310075025-G01-18ULF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0878311821 is determined by strict alignment of the following critical parameters:

• Connector type: Header
• Contact type: Male Pin
• Pitch - mating: 0.079" (2.00mm)
• Number of positions: 18
• Number of rows: 2
• Row spacing - mating: 0.079" (2.00mm)
• Shrouding: Shrouded - 4 Wall
• Mounting type: Through Hole
• Termination: Solder
• Current rating: 2A minimum
• Voltage rating: 125V minimum
• Material flammability rating: UL94 V-0
• RoHS compliance: Required

The Amphenol ICC (FCI) part 10075025-G01-18ULF meets all critical substitution criteria. Both parts share identical mating pitch, position count, row configuration, shrouding design, and mounting methodology. Both are solder-terminated through-hole headers with equivalent current and voltage ratings, UL94 V-0 flammability certification, and RoHS compliance. Differences in fastening type (push-pull versus detent lock), contact length specifications, and insulation material do not preclude functional substitution within the defined electrical and mechanical envelope.

Parameter Comparison

Engineering Selection Recommendations

Both the Molex 0878311821 and Amphenol ICC 10075025-G01-18ULF are active production parts with full RoHS compliance and UL94 V-0 flammability certification. The Amphenol ICC part provides higher voltage rating (200V versus 125V) and equivalent current capacity (2A), making it suitable for applications requiring the same or lower electrical specifications as the original Molex design.

Selection between these parts should be based on:

• Mechanical fit requirements: The Amphenol ICC part has a lower insulation height (5.60mm versus 6.40mm) and shorter post length (2.00mm versus 2.50mm), which may affect PCB layout and mating connector compatibility.
• Fastening mechanism: The Molex part uses push-pull fastening, while the Amphenol ICC part uses detent lock. This difference affects mating and unmating force characteristics and connector retention behavior.
• Inventory availability: Molex 0878311821 has 1006 units in stock; Amphenol ICC 10075025-G01-18ULF has 974 units in stock.

Both parts are suitable for automotive, general purpose, and telecommunications applications within their specified electrical and thermal operating ranges.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 10075025-G01-18ULF directly replace the Molex 0878311821 on an existing PCB?

A: Direct replacement requires verification of mechanical compatibility. The Amphenol ICC part has a lower insulation height (5.60mm versus 6.40mm) and shorter post length (2.00mm versus 2.50mm). These dimensional differences may affect clearance and mating connector engagement. PCB layout and mating connector specifications must be reviewed before substitution.

Q: What is the difference between push-pull and detent lock fastening?

A: Push-pull fastening (Molex 0878311821) uses a spring-loaded mechanism for quick connect/disconnect. Detent lock fastening (Amphenol ICC 10075025-G01-18ULF) uses a positive locking mechanism that requires deliberate action to release. The choice depends on application requirements for connector retention and ease of service.

Q: Are both parts RoHS compliant?

A: Yes. The Molex 0878311821 is ROHS3 Compliant. The Amphenol ICC 10075025-G01-18ULF is RoHS Compliant. Both meet RoHS requirements for restricted substance elimination.

Q: What is the voltage and current rating difference?

A: The Molex 0878311821 is rated for 2A at 125V. The Amphenol ICC 10075025-G01-18ULF is rated for 2A (AC/DC) at 200V (AC/DC). The Amphenol ICC part supports higher voltage applications while maintaining equivalent current capacity.

Q: Are both parts suitable for automotive applications?

A: The Molex 0878311821 is specified for automotive, general purpose, and telecommunications applications. The Amphenol ICC 10075025-G01-18ULF does not list specific applications in the provided data. Automotive application suitability for the Amphenol ICC part must be confirmed through manufacturer documentation and design validation.

Q: What is the moisture sensitivity level for both parts?

A: Both parts have Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or assembly.