PCN21B-55SC-2PF Equivalent & Substitute Parts

Part Overview

The PCN21B-55SC-2PF is a 55-position receptacle connector manufactured by Hirose Electric Co Ltd, featuring 2.00mm pitch press-fit termination for through-hole mounting. This backplane connector is rated for 1.5A at 300V across an operating temperature range of -55°C to 125°C. The part is currently obsolete, necessitating identification of functionally equivalent alternatives from active product lines to maintain design compatibility and ensure supply chain continuity.

Substiute Parts

PCN21B-55SC-2PF

Hirose Electric Co LtdIn Stock: 992PCN21B-55SC-2PF Datasheet

Current PartRFQ

100161-1

TE Connectivity AMP ConnectorsIn Stock: 1806100161-1 Datasheet

MFR RecommendedRFQ

5100161-1

TE Connectivity AMP ConnectorsIn Stock: 17425100161-1 Datasheet

MFR RecommendedRFQ

HM2R03PA5100N9LF

Amphenol ICC (FCI)In Stock: 1519HM2R03PA5100N9LF Datasheet

MFR RecommendedRFQ

HM2R03PA5108N9LF

Amphenol ICC (FCI)In Stock: 9608HM2R03PA5108N9LF Datasheet

MFR RecommendedRFQ

HM2R20PA5100N9LF

Amphenol ICC (FCI)In Stock: 858HM2R20PA5100N9LF Datasheet

MFR RecommendedRFQ

HM2R21PA5101N9LF

Amphenol ICC (FCI)In Stock: 778HM2R21PA5101N9LF Datasheet

MFR RecommendedRFQ

HM2R30PA5100AALF

Amphenol ICC (FCI)In Stock: 2146HM2R30PA5100AALF Datasheet

MFR RecommendedRFQ

HM2R30PA5100N9LF

Amphenol ICC (FCI)In Stock: 1191HM2R30PA5100N9LF Datasheet

MFR RecommendedRFQ

HM2R30PA5108N9LF

Amphenol ICC (FCI)In Stock: 1374HM2R30PA5108N9LF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PCN21B-55SC-2PF is determined by strict equivalence across the following critical parameters:

• Connector Configuration: 55 positions, 5 rows, 2.00mm pitch, receptacle with female sockets
• Electrical Ratings: Minimum 1.5A current capacity and voltage rating equal to or exceeding 300V
• Mechanical Interface: Through-hole, right-angle mounting with press-fit termination
• Environmental Compliance: Operating temperature range of -55°C to 125°C, MSL 1 rating
• Contact System: Gold-plated contacts with equivalent finish thickness

All substitute parts listed maintain these core parameters. Variations in connector style designation (C 11 vs CR 11), shielding features, and RoHS compliance status are secondary differentiators that do not affect fundamental electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts meet or exceed the electrical and mechanical requirements of the PCN21B-55SC-2PF. Selection should prioritize active product status and compliance certifications:

TE Connectivity Z-PACK Series (100161-1, 5100161-1): Both parts provide direct functional equivalence with elevated voltage ratings (500Vrms). The 5100161-1 variant offers ROHS3 compliance, making it suitable for applications requiring RoHS certification. The 100161-1 is RoHS non-compliant but remains functionally equivalent.

Amphenol ICC Millipacs® Series: All variants (HM2R03PA5100N9LF, HM2R03PA5108N9LF, HM2R20PA5100N9LF, HM2R21PA5101N9LF, HM2R30PA5100AALF, HM2R30PA5100N9LF, HM2R30PA5108N9LF) are active products with RoHS compliance and elevated voltage ratings (750Vrms). Differentiation within this series is based on connector style designation and shielding configuration. HM2R03 and HM2R30 variants use C 11 style, while HM2R20 and HM2R21 use CR 11 style. Shielding options include board guide, upper shield, or upper and lower shield configurations.

For applications requiring maximum voltage margin and RoHS compliance, Amphenol ICC Millipacs® parts are preferred. For cost-optimized solutions with adequate voltage headroom, TE Connectivity Z-PACK variants are suitable.

Frequently Asked Questions (FAQ)

Q: Can the PCN21B-55SC-2PF be directly replaced with any of the listed substitutes?

A: Yes. All listed parts maintain electrical equivalence (1.5A, voltage ≥300V), identical connector configuration (55 positions, 2.00mm pitch, 5 rows), and compatible mechanical interfaces (through-hole, right-angle, press-fit). Physical board layout compatibility must be verified for mounting hole alignment.

Q: What is the difference between TE Connectivity and Amphenol ICC alternatives?

A: Both manufacturers provide functionally equivalent 55-position, 2.00mm pitch receptacles with press-fit termination. TE Connectivity Z-PACK series offers 500Vrms rating, while Amphenol ICC Millipacs® series provides 750Vrms rating. Amphenol variants include RoHS compliance options and optional shielding features. Selection depends on voltage requirements, compliance mandates, and shielding needs.

Q: Are there differences between HM2R03, HM2R20, HM2R21, and HM2R30 variants?

A: These variants differ in connector style designation (C 11 vs CR 11) and shielding configuration. HM2R03 and HM2R30 use C 11 style; HM2R20 and HM2R21 use CR 11 style. Shielding varies: HM2R03PA5100N9LF includes board guide; HM2R03PA5108N9LF adds upper shield; HM2R21PA5101N9LF includes upper and lower shields. All maintain identical electrical ratings and pin configuration.

Q: What packaging formats are available?

A: TE Connectivity parts are supplied in Tube packaging. Amphenol ICC Millipacs® parts are supplied in Tray packaging. Packaging format does not affect electrical or mechanical compatibility.

Q: Is RoHS compliance required for substitution?

A: RoHS compliance is not a substitution requirement but a regulatory consideration. The 5100161-1 (ROHS3 compliant) and all Amphenol ICC Millipacs® variants (RoHS compliant) are suitable for applications with RoHS mandates. The 100161-1 (RoHS non-compliant) remains functionally equivalent for applications without RoHS requirements.

Q: What is the significance of the voltage rating difference (300V vs 500V/750V)?

A: The PCN21B-55SC-2PF is rated for 300V. All substitutes exceed this rating (500Vrms or 750Vrms), providing additional voltage margin. Higher voltage ratings do not affect compatibility; they indicate enhanced dielectric capability suitable for higher-voltage applications.