Amphenol ICC 76745-121R10 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 76745-121R10 is a 10-position header spacer connector with 0.100" (2.54mm) pitch, designed for through-hole mounting applications. This connector features gold-plated GXT™ contacts and is part of the BERGSTIK®, MezzSelect™, and Basics+ series. The part is currently listed as obsolete, making identification of functional equivalents necessary for ongoing system support and component procurement.

Substiute Parts

76745-121R10

Amphenol ICC (FCI)In Stock: 102076745-121R10 Datasheet

Current PartRFQ

76745-121R10LF

Amphenol ICC (FCI)In Stock: 114176745-121R10LF Datasheet

DirectRFQ

87606-326LF

Amphenol ICC (FCI)In Stock: 106587606-326LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 76745-121R10 is determined by the following critical parameters: connector type (header vs. receptacle), number of positions, pitch spacing, row configuration, mounting method, and termination type. These parameters define the physical and electrical interface compatibility.

The substitute parts are grouped as follows:

Direct Form-Fit Substitute (Same Connector Type):

• 76745-121R10LF: Maintains identical position count (10), pitch (0.100"), row configuration (2 rows), mounting type (through hole), and termination (solder). This part represents an active production equivalent with updated compliance status.

Cross-Category Substitute (Different Connector Type):

• 87606-326LF: Shares the same pitch (0.100"), mounting type (through hole), termination (solder), and row spacing (0.100"). However, this part is a receptacle connector with 52 positions and represents a different connector category (board-to-board receptacle vs. header). Substitution is limited to applications where receptacle functionality is acceptable and position count requirements differ.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): The 76745-121R10LF is the primary substitute for the obsolete 76745-121R10. Both parts maintain identical mechanical and electrical interfaces with 10 positions, 0.100" pitch, and 2-row configuration. The 76745-121R10LF is in active production status and meets current RoHS compliance requirements, making it suitable for new designs and ongoing production support. The transition from REACH Unaffected to REACH Affected status reflects updated regulatory classification and does not impact functional compatibility.

For Cross-Category Applications: The 87606-326LF may be considered only in applications where receptacle functionality is required and the increased position count (52 vs. 10) is accommodated by the circuit design. This part shares the same pitch and mounting characteristics but differs in connector type, stacking height, and contact configuration. Cross-category substitution requires design-level evaluation and is not recommended as a direct drop-in replacement.

Frequently Asked Questions (FAQ)

Q: Can the 76745-121R10LF be used as a direct replacement for the 76745-121R10? A: Yes. Both parts maintain identical position count (10), pitch (0.100"), row configuration (2 rows), stack height (0.728"), mounting type (through hole), and solder termination. The primary difference is product status (active vs. obsolete) and compliance certifications (RoHS compliant vs. non-compliant).

Q: What is the difference between the 76745-121R10 and 76745-121R10LF? A: The suffix "LF" on the 76745-121R10LF indicates lead-free compliance and RoHS certification. The parts are mechanically and electrically identical. The 76745-121R10LF is the current production equivalent and is recommended for all new applications.

Q: Can the 87606-326LF replace the 76745-121R10? A: No, not as a direct replacement. The 87606-326LF is a receptacle connector with 52 positions, whereas the 76745-121R10 is a 10-position header. While both share 0.100" pitch and through-hole mounting, they serve different connector roles. Substitution is only possible if the application design is modified to accommodate receptacle functionality and the higher position count.

Q: What does "stack height" mean in connector specifications? A: Stack height refers to the vertical distance from the PCB surface to the top of the connector body. The 76745-121R10 and 76745-121R10LF both have a stack height of 0.728" (18.500mm), which determines clearance requirements in the application. The 87606-326LF has a significantly lower stack height of 0.335" (8.51mm).

Q: Are there packaging differences between the main part and substitutes? A: Yes. The 76745-121R10 packaging is not specified in the data. The 76745-121R10LF is supplied in bulk packaging, while the 87606-326LF is supplied in tube packaging. Packaging differences do not affect functional compatibility but may impact procurement and handling procedures.

Q: What is the significance of the RoHS compliance change? A: The transition from RoHS non-compliant (76745-121R10) to RoHS compliant (76745-121R10LF) reflects regulatory updates and material composition changes. For applications subject to RoHS regulations, the 76745-121R10LF is the required choice. For legacy systems without RoHS requirements, both parts are functionally equivalent.