QR/P-24S-C(51) Equivalent & Substitute Parts

Part Overview

The QR/P-24S-C(51) is a 24-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 currently classified as obsolete, making identification of active equivalent components essential for ongoing system support and procurement planning.

Substiute Parts

QR/P-24S-C(51)

Hirose Electric Co LtdIn Stock: 1228QR/P-24S-C(51) Datasheet

Current PartRFQ

QR/P-24S-C(21)

Hirose Electric Co LtdIn Stock: 808QR/P-24S-C(21) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the QR/P-24S-C(51) is determined by strict equivalence across the following critical parameters:

• Connector Type: Housing for Female Sockets
• Number of Positions: 24
• Pitch: 0.177" (4.50mm)
• Number of Rows: 2
• Mounting Type: Panel Mount
• Connector Style: Rack and Panel
• Connector Usage: Receptacle
• Color: Blue
• Features: Mating Guide
• RoHS Status: RoHS Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The QR/P-24S-C(21) meets all substitution criteria as a direct equivalent within the QR/P series. The primary distinction is product status: QR/P-24S-C(51) is obsolete, while QR/P-24S-C(21) maintains active status with current manufacturing availability.

Parameter Comparison

Engineering Selection Recommendations

The QR/P-24S-C(21) is the direct functional equivalent for the obsolete QR/P-24S-C(51). Both components maintain identical electrical and mechanical specifications, including connector configuration, pitch, mounting methodology, and compliance certifications. The QR/P-24S-C(21) is currently in active production status with confirmed inventory availability (755 pcs), making it the appropriate selection for new designs and replacement procurement. Both parts are RoHS compliant and carry MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can QR/P-24S-C(21) directly replace QR/P-24S-C(51) in existing assemblies?

A: Yes. The QR/P-24S-C(21) is electrically and mechanically equivalent to QR/P-24S-C(51). All critical parameters—position count, pitch, mounting type, connector style, and color—are identical. The components are interchangeable for rack and panel backplane applications.

Q: What is the significance of the different packaging between these parts?

A: QR/P-24S-C(51) packaging is not specified in available documentation, while QR/P-24S-C(21) is supplied in bulk packaging. Packaging differences do not affect component functionality or electrical performance. Bulk packaging may influence procurement quantities and storage requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both QR/P-24S-C(51) and QR/P-24S-C(21) are RoHS compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, meeting standard environmental and reliability requirements.

Q: Why is QR/P-24S-C(51) classified as obsolete?

A: Product status reflects manufacturing lifecycle decisions by Hirose Electric Co Ltd. The QR/P-24S-C(21) remains in active production and is the current standard offering within the QR/P series for this connector configuration.

Q: Are contacts included with these housings?

A: No. Both QR/P-24S-C(51) and QR/P-24S-C(21) are housings only. Contacts must be procured separately and are not included with the connector housing.