Equivalent & Substitute Parts for RP19-SC-112

Part Overview

The RP19-SC-112 is a socket contact manufactured by Hirose Electric Co Ltd, designed for 18-22 AWG wire applications with crimp termination and silver contact finish. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part belongs to the RP13 series circular connectors and is RoHS compliant with unlimited moisture sensitivity rating.

Substiute Parts

RP19-SC-112

Hirose Electric Co LtdIn Stock: 727RP19-SC-112 Datasheet

Current PartRFQ

0503948054

MolexIn Stock: 8929980503948054 Datasheet

MFR RecommendedRFQ

0503948100

MolexIn Stock: 273290503948100 Datasheet

MFR RecommendedRFQ

0503948200

MolexIn Stock: 994430503948200 Datasheet

MFR RecommendedRFQ

0503948400

MolexIn Stock: 1889490503948400 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute parts listed for RP19-SC-112 are Molex Milli-Grid 50394 series socket contacts. Substitution is based on the following electrical and mechanical parameters:

• Contact Type: Socket configuration maintained across all substitutes
• Contact Termination: Crimp termination method consistent with original specification
• Moisture Sensitivity Level: MSL 1 (Unlimited) maintained for all alternatives
• RoHS Compliance: All substitutes meet ROHS3 compliance requirement
• Wire Gauge Accommodation: Substitute parts accommodate 24-30 AWG range, which overlaps with the original 18-22 AWG specification

The primary distinction among substitute parts is the contact finish thickness specification, which varies by part number while maintaining gold plating as the contact finish material.

Parameter Comparison

Engineering Selection Recommendations

All four Molex Milli-Grid 50394 series substitutes maintain active product status and ROHS3 compliance, providing long-term availability and regulatory alignment. Selection among the substitute options should be based on contact finish thickness requirements specific to your application:

• 0503948054: Minimum gold plating thickness (2.00µin) with Cut Tape packaging
• 0503948100: Standard gold plating thickness (15.0µin) with Bulk packaging
• 0503948200: Enhanced gold plating thickness (30.0µin) with Bulk packaging
• 0503948400: Flash gold plating with Bulk packaging and highest inventory availability

The transition from silver to gold contact finish in the substitutes represents an improvement in corrosion resistance and contact reliability. Wire gauge range differences (18-22 AWG original versus 24-30 AWG substitutes) must be evaluated against your specific wire termination requirements.

Frequently Asked Questions (FAQ)

Q: Why is the wire gauge range different between the original and substitute parts? A: The RP19-SC-112 specifies 18-22 AWG while Molex substitutes accommodate 24-30 AWG. The substitute range does not directly overlap the original specification. Application compatibility must be verified based on your actual wire gauge requirements.

Q: What is the significance of contact finish thickness variations among the Molex substitutes? A: Contact finish thickness affects durability and corrosion resistance. Thicker gold plating (30.0µin in 0503948200) provides enhanced protection for high-reliability applications, while flash plating (0503948400) offers cost efficiency for standard applications.

Q: Are all substitutes suitable for the same environmental conditions? A: All substitutes maintain MSL 1 (Unlimited) rating and ROHS3 compliance, indicating equivalent environmental performance characteristics.

Q: What packaging options are available? A: The 0503948054 is supplied in Cut Tape (CT) packaging, while 0503948100, 0503948200, and 0503948400 are supplied in Bulk packaging.

Q: How does the contact material differ between the original and substitutes? A: The original RP19-SC-112 uses phosphor bronze with silver finish. All Molex substitutes use gold finish contacts, which provide superior corrosion resistance and contact reliability.