QR/P-8S-C(51) Equivalent & Substitute Parts Reference

Part Overview

The QR/P-8S-C(51) is an 8-position housing for female sockets connector manufactured by Hirose Electric Co Ltd, designed for rack and panel backplane applications. This connector features a blue panel mount configuration with a 0.177" (4.50mm) pitch and mating guide functionality. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing procurement and system maintenance.

Substiute Parts

QR/P-8S-C(51)

Hirose Electric Co LtdIn Stock: 803QR/P-8S-C(51) Datasheet

Current PartRFQ

QR/P-8S-C(21)

Hirose Electric Co LtdIn Stock: 1114QR/P-8S-C(21) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the QR/P-8S-C(51) is determined by strict equivalence across the following critical parameters:

• Connector Type: Housing for Female Sockets
• Number of Positions: 8
• Pitch: 0.177" (4.50mm)
• Number of Rows: 2
• Connector Style: Rack and Panel
• Mounting Type: Panel Mount
• Color: Blue
• Features: Mating Guide
• Manufacturer: Hirose Electric Co Ltd
• RoHS Status: RoHS Compliant

The QR/P-8S-C(21) meets all substitution criteria as an active product variant within the same QR/P series, maintaining identical electrical and mechanical specifications while offering current availability.

Parameter Comparison

Engineering Selection Recommendations

The QR/P-8S-C(21) is the direct equivalent for the obsolete QR/P-8S-C(51). Both parts are manufactured by Hirose Electric Co Ltd and maintain identical electrical and mechanical specifications across all critical parameters. The QR/P-8S-C(21) carries active product status, ensuring ongoing availability and supply chain continuity. Both parts maintain RoHS compliance and equivalent moisture sensitivity ratings. Selection of the QR/P-8S-C(21) eliminates obsolescence risk while preserving full functional and dimensional compatibility.

Frequently Asked Questions (FAQ)

Q: Are QR/P-8S-C(51) and QR/P-8S-C(21) mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications: 8 positions, 0.177" (4.50mm) pitch, 2-row configuration, panel mount design, and blue color. Mating guide features are present on both parts.

Q: What is the difference between these two part numbers?

A: The primary difference is product status. QR/P-8S-C(51) is obsolete, while QR/P-8S-C(21) is active. Packaging differs (unspecified versus bulk), but electrical and mechanical parameters are identical.

Q: Can I use QR/P-8S-C(21) as a direct replacement in existing designs?

A: Yes. The QR/P-8S-C(21) maintains full compatibility with applications designed for QR/P-8S-C(51) across all specified parameters.

Q: Are both parts RoHS compliant?

A: Yes. Both QR/P-8S-C(51) and QR/P-8S-C(21) are RoHS compliant with identical moisture sensitivity levels (MSL 1 - Unlimited).

Q: Why should I transition from QR/P-8S-C(51) to QR/P-8S-C(21)?

A: The QR/P-8S-C(51) is obsolete, creating procurement risk. The QR/P-8S-C(21) is an active product with confirmed inventory availability and ongoing manufacturer support.