HM2P89PKA1M1GF Equivalent & Substitute Parts

Part Overview

The HM2P89PKA1M1GF is a 110-position backplane connector header manufactured by Amphenol ICC (FCI) as part of the Millipacs® series. This through-hole press-fit connector features 88 signal positions plus 22 dedicated ground positions, configured in an 8+2 row arrangement with 0.079" (2.00mm) pitch. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs requiring compatible interconnect solutions.

Substiute Parts

HM2P89PKA1M1GF

Amphenol ICC (FCI)In Stock: 1129HM2P89PKA1M1GF Datasheet

Current PartRFQ

5646457-1

TE Connectivity AMP ConnectorsIn Stock: 15495646457-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HM2P89PKA1M1GF is determined by the following critical parameters:

• Connector Type & Style: Header with male pins, F 11 style
• Pitch & Row Configuration: 0.079" (2.00mm) pitch with through-hole mounting
• Termination Method: Press-fit technology
• Electrical Ratings: 1.5 A current capacity and 750Vrms voltage rating
• Environmental Specifications: -55°C to 125°C operating range
• Contact System: Gold-plated contacts with equivalent finish thickness

The identified substitute part 5646457-1 maintains compatibility across all critical electrical and mechanical parameters. However, the position count differs: the substitute provides 88 positions (signal only) versus the original 110 positions (88 signal + 22 ground). This reduction in total positions and elimination of dedicated ground rows represents a functional limitation requiring design-level evaluation.

Parameter Comparison

Engineering Selection Recommendations

The 5646457-1 substitute maintains electrical and thermal compatibility with the HM2P89PKA1M1GF across current rating, voltage rating, and operating temperature specifications. Both connectors employ identical pitch, press-fit termination, and gold contact finish, ensuring mechanical and signal integrity compatibility.

The primary design consideration is the position count reduction from 110 to 88 positions. The original design incorporates 22 dedicated ground positions distributed across two additional rows; the substitute eliminates this dedicated ground architecture. System designs relying on the specific ground distribution pattern or requiring all 110 positions cannot use this substitute without circuit board redesign.

From a compliance perspective, the 5646457-1 offers RoHS compliance, whereas the original HM2P89PKA1M1GF is RoHS non-compliant. This distinction is relevant for applications subject to RoHS regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the 5646457-1 be used as a direct drop-in replacement for the HM2P89PKA1M1GF?

A: No. While electrical and thermal ratings are equivalent, the 5646457-1 provides 88 positions versus the original 110 positions. Direct substitution requires that the application design uses only 88 or fewer positions and does not depend on the dedicated ground row architecture of the original connector.

Q: What is the significance of the position count difference?

A: The HM2P89PKA1M1GF allocates 22 of its 110 positions as dedicated grounds distributed across two additional rows. The 5646457-1 provides only 88 signal positions with no dedicated ground rows. Applications requiring the specific ground distribution pattern or full 110-position capacity cannot use this substitute.

Q: Are the pitch and mounting characteristics identical?

A: Yes. Both connectors use 0.079" (2.00mm) pitch and through-hole press-fit termination. PCB footprint compatibility depends on position count; a 88-position footprint will not accommodate a 110-position connector.

Q: What is the RoHS compliance difference?

A: The HM2P89PKA1M1GF is RoHS non-compliant. The 5646457-1 is RoHS compliant. For applications subject to RoHS directives, the substitute offers regulatory alignment; for legacy systems without RoHS requirements, this difference is not a technical constraint.

Q: Are the contact finish specifications equivalent?

A: Yes. Both connectors feature gold-plated contacts with 30.0µin (0.76µm) finish thickness, ensuring equivalent signal quality and corrosion resistance.