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PCN21B-95PB-2PF-G Equivalent & Substitute Parts
Part Overview
The PCN21B-95PB-2PF-G is a 133-position (95 signal + 38 ground) backplane connector header manufactured by Hirose Electric Co Ltd. This press-fit through-hole connector operates at 1.5 A per contact with a 300V rating across an operating temperature range of -55°C to 125°C. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring compatible backplane connectivity solutions.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | PCN21B-95PB-2PF-G |
| Manufacturer | Hirose Electric Co Ltd |
| Category | Backplane Connectors |
| Connector Type | Header, Male Pins |
| Number of Positions | 133 (95 + 38 Ground) |
| Pitch | 0.079" (2.00mm) |
| Number of Rows | 5 + 2 |
| Mounting Type | Through Hole |
| Termination | Press-Fit |
| Contact Finish | Gold |
| Current Rating | 1.5 A |
| Voltage Rating | 300V |
| Operating Temperature | -55°C to 125°C |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the PCN21B-95PB-2PF-G is determined by the following critical parameters:
Position Count & Ground Configuration: The main part contains 133 total positions (95 signal + 38 ground) with a 5 + 2 row configuration. Substitutes must match this exact position count and ground plane arrangement to maintain electrical and mechanical compatibility.
Pitch & Connector Geometry: All substitutes must maintain the 0.079" (2.00mm) pitch and through-hole mounting type to ensure PCB footprint compatibility.
Electrical Ratings: Current rating of 1.5 A and voltage rating of 300V establish the minimum electrical performance threshold. Substitutes with equal or higher voltage ratings (750Vrms) are acceptable as they provide enhanced performance margins.
Termination & Contact System: Press-fit termination with gold-plated contacts is required for direct mechanical and electrical equivalence.
Operating Temperature Range: The -55°C to 125°C range must be maintained or exceeded by substitute parts.
Substitute parts are grouped into two categories:
Category A - Direct Equivalents (133-Position, 5+2 Row): Parts matching the exact 133-position configuration with 95 signal + 38 ground positions. These include HM2P67PK5111GFLF, HM2P67PMA3T4GFLF, and HM2P71PD5111N9LF.
Category B - Reduced Configuration (95-Position, 5 Row): Parts with 95 positions and 5-row configuration. These provide reduced ground plane density but maintain signal contact count. These include CP2-HAB095-GE1-KR, HM2P67PD5110N9LF, HM2P67PDE120N9LF, HM2P67PDU241N9LF, HM2P67PKA3A0GFLF, and HM2P71PD5110N9LF.
Parameter Comparison
| Part Number | Manufacturer | Positions | Rows | Pitch (mm) | Termination | Contact Finish | Current (A) | Voltage | Temp Range (°C) | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| PCN21B-95PB-2PF-G | Hirose | 133 (95+38G) | 5+2 | 2.00 | Press-Fit | Gold | 1.5 | 300V | -55 to 125 | Obsolete |
| HM2P67PK5111GFLF | Amphenol ICC (FCI) | 127 (95+32G) | 5+2 | 2.00 | Press-Fit | Gold | 1.5 | 750Vrms | -55 to 125 | Active |
| HM2P67PMA3T4GFLF | Amphenol ICC (FCI) | 127 (95+32G) | 5+2 | 2.00 | Press-Fit | Gold | 1.5 | 750Vrms | -55 to 125 | Active |
| HM2P71PD5111N9LF | Amphenol ICC (FCI) | 133 (95+38G) | 5+2 | 2.00 | Press-Fit | Gold | 1.5 | 750Vrms | -55 to 125 | Active |
| CP2-HAB095-GE1-KR | 3M | 95 | 5 | 2.00 | Press-Fit | Gold | — | — | -55 to 125 | Active |
| HM2P67PD5110N9LF | Amphenol ICC (FCI) | 95 | 5 | 2.00 | Press-Fit | Gold | 1.5 | 750Vrms | -55 to 125 | Active |
| HM2P67PDE120N9LF | Amphenol ICC (FCI) | 95 | 5 | 2.00 | Press-Fit | Gold | 1.5 | 750Vrms | -55 to 125 | Active |
| HM2P67PDU241N9LF | Amphenol ICC (FCI) | 95 | 5 | 2.00 | Press-Fit | Gold | 1.5 | 750Vrms | -55 to 125 | Active |
| HM2P67PKA3A0GFLF | Amphenol ICC (FCI) | 95 | 5 | 2.00 | Press-Fit | Gold | 1.5 | 750Vrms | -55 to 125 | Active |
| HM2P71PD5110N9LF | Amphenol ICC (FCI) | 95 | 5 | 2.00 | Press-Fit | Gold | 1.5 | 750Vrms | -55 to 125 | Active |
Engineering Selection Recommendations
For Direct Replacement (133-Position Configuration):
HM2P71PD5111N9LF is the primary substitute. It matches the exact 133-position (95 + 38 ground) configuration with identical 5 + 2 row geometry and 2.00mm pitch. The part is active in production with RoHS compliance and REACH affected status. Voltage rating of 750Vrms exceeds the original 300V specification, providing enhanced electrical margin. Contact finish is gold flash rather than plated gold, which is acceptable for equivalent electrical performance.
HM2P67PK5111GFLF and HM2P67PMA3T4GFLF provide alternative 127-position (95 + 32 ground) configurations with 5 + 2 row layout. These parts reduce ground plane density by 6 positions but maintain the multi-row architecture. Both are active with RoHS compliance and REACH affected status. Selection depends on whether the reduced ground plane count is acceptable for the application.
For Reduced Configuration (95-Position, 5-Row):
When position count reduction is acceptable, multiple active alternatives exist. HM2P67PD5110N9LF, HM2P67PDE120N9LF, HM2P67PDU241N9LF, and HM2P67PKA3A0GFLF are all Amphenol ICC Millipacs series parts with 95 positions and 5-row configuration. All maintain 1.5 A current rating and 750Vrms voltage rating with RoHS compliance. HM2P71PD5110N9LF provides the same 95-position configuration with Millipacs series designation and REACH unaffected status.
CP2-HAB095-GE1-KR is a 3M MetPak CP2 series alternative with 95 positions and 5-row configuration. This part is active and RoHS compliant but lacks specified current and voltage ratings in the provided data.
Compliance Considerations:
All substitute parts maintain the -55°C to 125°C operating temperature range. Amphenol ICC parts show RoHS compliance across all variants. REACH status varies: HM2P71PD5110N9LF is REACH unaffected, while most HM2P67 variants are REACH affected. Selection should account for supply chain and regulatory requirements specific to the end application.
Frequently Asked Questions (FAQ)
Q: Can HM2P71PD5111N9LF directly replace PCN21B-95PB-2PF-G?
A: Yes. HM2P71PD5111N9LF matches the critical substitution parameters: 133 total positions (95 signal + 38 ground), 5 + 2 row configuration, 2.00mm pitch, press-fit termination, gold contact finish, 1.5 A current rating, and -55°C to 125°C operating temperature. The 750Vrms voltage rating exceeds the original 300V specification. Contact finish is gold flash rather than plated gold, which does not affect electrical equivalence.
Q: What is the difference between 133-position and 95-position substitutes?
A: The main part contains 133 total positions distributed as 95 signal contacts plus 38 dedicated ground positions across a 5 + 2 row layout. The 95-position substitutes contain only 95 total positions in a 5-row configuration with no dedicated ground row. This reduces ground plane density and changes the electrical architecture. Selection depends on whether the application requires the enhanced ground distribution of the original design.
Q: Why do some substitutes show 127 positions instead of 133?
A: HM2P67PK5111GFLF and HM2P67PMA3T4GFLF contain 127 total positions (95 signal + 32 ground) in a 5 + 2 row configuration. This represents a middle ground between the full 133-position design and the 95-position single-row alternatives. The reduced ground plane count (32 vs. 38 positions) may be acceptable depending on application grounding requirements.
Q: Are all substitutes RoHS compliant?
A: All listed substitutes are RoHS compliant. REACH status varies: HM2P71PD5110N9LF is REACH unaffected, while most HM2P67 series parts are REACH affected. Verify REACH compliance requirements for your specific supply chain and end-use application.
Q: What is the difference between gold plated and gold flash contact finish?
A: Both provide equivalent electrical performance for connector applications. Gold plated typically refers to a thicker gold layer, while gold flash indicates a thinner coating. For the electrical and mechanical requirements of this backplane connector application, both finishes meet the functional requirements specified in the parameter set.
Q: Can I use a 95-position substitute in a design originally specified for 133 positions?
A: Only if the PCB footprint and electrical architecture support the reduced position count and single-row ground configuration. The 95-position parts eliminate the dedicated ground row present in the original design. Electrical performance depends on whether the application can function with reduced ground plane density and modified grounding topology.
Q: What inventory levels are available for these substitutes?
A: HM2P71PD5110N9LF has the highest inventory at 1,630 pieces. HM2P71PD5111N9LF (direct 133-position equivalent) has 1,104 pieces available. Most other Amphenol ICC alternatives range from 763 to 922 pieces. CP2-HAB095-GE1-KR has 979 pieces available. Verify current inventory status with your supplier before design commitment.
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