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PCN21B-110PB-2W Equivalent & Substitute Parts
Part Overview
The PCN21B-110PB-2W is a 110-position backplane connector header manufactured by Hirose Electric Co Ltd, featuring 2.00mm pitch press-fit termination for through-hole mounting. This connector is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The part operates across -55°C to 125°C with a 1.5A current rating and 300V voltage specification.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | PCN21B-110PB-2W |
| Manufacturer | Hirose Electric Co Ltd |
| Category | Backplane Connectors |
| Number of Positions | 110 |
| Pitch | 0.079" (2.00mm) |
| Number of Rows | 5 |
| Connector Type | Header, Male Pins |
| Mounting Type | Through Hole |
| Termination | Press-Fit |
| Current Rating | 1.5 A |
| Voltage Rating | 300V |
| Operating Temperature | -55°C ~ 125°C |
| Contact Finish | Gold |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the PCN21B-110PB-2W is determined by the following critical parameters:
- Position Count & Pitch: 110 positions at 0.079" (2.00mm) spacing
- Connector Configuration: 5-row header with male pins
- Termination Method: Press-fit for through-hole mounting
- Electrical Ratings: Minimum 1.5A current capacity and voltage compatibility
- Operating Temperature Range: -55°C to 125°C
- Connector Style: Backplane header configuration
Substitute parts are grouped into two categories:
Category 1: Direct Header Replacements (110-Position) Parts that maintain identical position count, pitch, and row configuration with active product status and improved compliance certifications.
Category 2: Enhanced Position Variants (154-Position) Parts that provide 110 signal positions plus 44 additional ground positions, offering improved grounding architecture while maintaining core electrical compatibility.
Parameter Comparison
| Parameter | PCN21B-110PB-2W | 17011101201 | 17011102204 | HM2P07PA5110AALF | HM2P07PD5110N9LF | HM2P07PCJ3P1N9LF |
|---|---|---|---|---|---|---|
| Manufacturer | Hirose Electric | HARTING | HARTING | Amphenol ICC (FCI) | Amphenol ICC (FCI) | Amphenol ICC (FCI) |
| Number of Positions | 110 | 110 | 110 | 110 | 110 | 154 (110+44 GND) |
| Pitch | 0.079" (2.00mm) | 0.079" (2.00mm) | 0.079" (2.00mm) | 0.079" (2.00mm) | 0.079" (2.00mm) | 0.079" (2.00mm) |
| Number of Rows | 5 | 5 | 5 | 5 | 5 | 5 + 2 |
| Connector Type | Header, Male Pins | Header, Male Pins | Header, Male Pins | Header, Male Pins | Header, Male Pins | Header, Male Pins |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Termination | Press-Fit | Press-Fit | Press-Fit | Press-Fit | Press-Fit | Press-Fit |
| Current Rating | 1.5 A | 1 A | 1 A | 1.5 A | 1.5 A | 1.5 A |
| Voltage Rating | 300V | — | — | 750Vrms | 750Vrms | 750Vrms |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C |
| Contact Finish | Gold (0.80µm) | Gold or Gold-Palladium | Gold or Gold-Palladium | Gold (0.76µm) | Gold (Flash) | Gold (0.76µm) |
| Product Status | Obsolete | Active | Active | Active | Active | Active |
| RoHS Status | — | ROHS3 Compliant | ROHS3 Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant |
Engineering Selection Recommendations
For Direct 110-Position Replacement:
The Amphenol ICC (FCI) Millipacs® series parts HM2P07PA5110AALF and HM2P07PD5110N9LF provide the most direct functional equivalence to the PCN21B-110PB-2W. Both maintain 110-position configuration, 2.00mm pitch, 5-row layout, and press-fit termination. These parts carry active product status with RoHS compliance certification, ensuring long-term availability and regulatory alignment. The HM2P07PA5110AALF features 30.0µin gold plating with board guide, while HM2P07PD5110N9LF provides flash gold plating. Both support 1.5A current rating and 750Vrms voltage specification, exceeding the original part's 300V rating.
The HARTING har-bus® HM series parts 17011101201 and 17011102204 offer alternative direct replacements with active product status and ROHS3 compliance. These connectors maintain identical position count and pitch specifications. The 17011102204 variant includes board guide features. Current rating for HARTING parts is specified at 1.0A, which is lower than the original 1.5A specification.
For Enhanced Ground Architecture:
The HM2P07PCJ3P1N9LF provides 154 total positions (110 signal + 44 ground) while maintaining 2.00mm pitch and press-fit termination. This configuration offers improved grounding distribution for applications requiring enhanced signal integrity. The part is active with RoHS compliance and supports 1.5A current rating and 750Vrms voltage specification.
Compliance Considerations:
All recommended substitute parts carry active product status with RoHS compliance certifications, providing regulatory assurance and supply chain continuity. The original PCN21B-110PB-2W is classified as obsolete, making transition to active alternatives necessary for new designs and ongoing support.
Frequently Asked Questions (FAQ)
Q: Can HM2P07PCJ3P1N9LF (154-position) be used as a direct replacement for PCN21B-110PB-2W (110-position)?
A: HM2P07PCJ3P1N9LF maintains the same 110 signal positions and 2.00mm pitch as the original part, with an additional 44 ground positions. The connector footprint and signal pin locations remain compatible. The enhanced ground architecture does not prevent functional substitution in applications where the additional ground pins can be utilized or left unconnected.
Q: What is the difference between HM2P07PA5110AALF and HM2P07PD5110N9LF?
A: Both parts maintain identical electrical specifications, position count, pitch, and mounting configuration. The primary difference is contact finish thickness: HM2P07PA5110AALF specifies 30.0µin (0.76µm) gold plating, while HM2P07PD5110N9LF uses flash gold plating. Both finishes provide equivalent corrosion resistance and electrical performance for the specified operating temperature range.
Q: Why do HARTING parts show 1.0A current rating versus 1.5A for the original part?
A: The HARTING har-bus® HM series parts 17011101201 and 17011102204 specify 1.0A current rating. Applications requiring the full 1.5A capacity should select Amphenol ICC (FCI) Millipacs® alternatives, which maintain the original current specification.
Q: Are all substitute parts RoHS compliant?
A: Yes. All recommended substitute parts carry active RoHS compliance certifications (ROHS3 or RoHS Compliant), ensuring regulatory alignment for new designs and manufacturing processes.
Q: What is the significance of the board guide feature in 17011102204 and HM2P07PA5110AALF?
A: The board guide feature provides mechanical alignment assistance during connector mating, improving assembly reliability and reducing installation errors. This feature is optional for functional compatibility but recommended for manufacturing environments requiring enhanced assembly control.
Q: Can the PCN21B-110PB-2W be sourced as a new part?
A: The PCN21B-110PB-2W is classified as obsolete. While 764 pieces are listed as new original inventory, long-term availability cannot be assured. Transition to active substitute parts is recommended for design continuity and supply chain stability.
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