HM2P66PDH321N9LLF Equivalent & Substitute Parts

Part Overview

The HM2P66PDH321N9LLF is a 146-position backplane connector header manufactured by Amphenol ICC (FCI) in the Millipacs® series. This press-fit through-hole connector features 110 signal positions plus 36 ground positions at 2.00mm pitch, designed for high-density interconnect applications. The part is currently active in production with full inventory availability. Substitute parts may be required due to supply constraints, design revisions, or application-specific requirements that align with compatible electrical and mechanical specifications.

Substiute Parts

HM2P66PDH321N9LLF

Amphenol ICC (FCI)In Stock: 722HM2P66PDH321N9LLF Datasheet

Current PartRFQ

5352639-1

TE Connectivity AMP ConnectorsIn Stock: 15245352639-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HM2P66PDH321N9LLF is determined by the following critical parameters:

Mandatory Matching Parameters:

• Pitch: 0.079" (2.00mm)
• Mounting Type: Through Hole
• Termination: Press-Fit
• Connector Type: Header, Male Pins
• Operating Temperature Range: -55°C ~ 125°C minimum
• Current Rating: 1.5 A minimum

Acceptable Variation Parameters:

• Number of Positions: Substitute parts may have reduced position counts if the application requires only a subset of the 146 total positions
• Voltage Rating: Substitute parts must meet or exceed 500Vrms minimum
• Connector Style: Different style designations (AB 22 vs. B 22) are acceptable if all electrical and mechanical parameters align
• Manufacturer: Alternative qualified manufacturers are acceptable

The substitute part 5352639-1 (TE Connectivity AMP Connectors, Z-PACK series) meets all mandatory parameters with a 110-position configuration, making it suitable for applications requiring signal and ground distribution at the specified pitch and electrical ratings.

Parameter Comparison

Engineering Selection Recommendations

The HM2P66PDH321N9LLF remains the primary choice for applications requiring the full 146-position configuration with dedicated ground planes across 7 rows. Both the main part and substitute 5352639-1 maintain active product status and full RoHS compliance, ensuring long-term availability and regulatory alignment.

Selection of the 5352639-1 substitute is appropriate when:

• The application design accommodates a 110-position header without the additional 36 dedicated ground positions
• The 500Vrms voltage rating satisfies system requirements
• The 5-row configuration aligns with PCB layout constraints
• Supply availability of the main part is limited

Both parts share identical pitch, termination method, current rating, and operating temperature specifications, ensuring mechanical and electrical interchangeability within the stated position and voltage parameters.

Frequently Asked Questions (FAQ)

Q: Can 5352639-1 be used as a direct replacement for HM2P66PDH321N9LLF?

A: Direct replacement is possible only if the application design uses 110 or fewer positions and does not require the additional 36 dedicated ground positions present in the main part. The reduced row count (5 vs. 7) must be accommodated in the PCB layout.

Q: What is the primary difference between these two connectors?

A: The main difference is position count and ground distribution. The HM2P66PDH321N9LLF provides 146 total positions (110 signal + 36 ground) across 7 rows, while the 5352639-1 provides 110 positions across 5 rows. Both maintain identical 2.00mm pitch and press-fit termination.

Q: Are there voltage rating implications when using the substitute?

A: The substitute part has a 500Vrms rating compared to 750Vrms for the main part. Applications operating above 500Vrms require the main part. Applications at or below 500Vrms can use either part.

Q: Do packaging differences affect connector performance?

A: No. The main part is supplied in Tray packaging while the substitute is supplied in Tube packaging. Packaging affects handling and storage logistics only, not electrical or mechanical performance.

Q: Are both parts RoHS compliant?

A: Yes. The HM2P66PDH321N9LLF is RoHS Compliant, and the 5352639-1 is ROHS3 Compliant. Both meet current regulatory requirements for lead-free and restricted substance compliance.