Harwin S4011-46 Quick Connect Terminal - Equivalent & Substitute Parts

Part Overview

The Harwin S4011-46 is a 0.110" (2.79mm) Quick Connect Male Solder Connector with non-insulated design, intended for through-hole mounting applications. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing production support and design continuity. The part features brass construction with tin plating and maintains ROHS3 compliance.

Substiute Parts

S4011-46

Harwin Inc.In Stock: 834S4011-46 Datasheet

Current PartRFQ

1211

Keystone ElectronicsIn Stock: 12611211 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the S4011-46 is determined by strict alignment with the following critical parameters:

• Tab Width: 0.110" (2.79mm) — exact match required for connector interface compatibility
• Gender: Male — functional role in circuit assembly
• Termination: Solder — assembly process compatibility
• Insulation: Non-Insulated — electrical and mechanical design requirement
• Contact Material: Brass with Tin finish — electrical conductivity and corrosion resistance
• Mounting Type: Through Hole — PCB assembly method
• RoHS3 Compliance — regulatory requirement

The Keystone Electronics 1211 meets all critical substitution criteria. Minor dimensional variations in tab thickness (0.032" vs. 0.031"), tab length (0.280" vs. 0.238"), and overall length (0.542" vs. 0.396") fall within acceptable tolerance ranges for quick-connect terminal applications where the primary interface dimension (tab width) remains constant.

Parameter Comparison

Engineering Selection Recommendations

The Keystone Electronics 1211 is the qualified substitute for the obsolete Harwin S4011-46. Selection is based on:

• Active product status ensuring long-term availability and supply chain continuity
• Full compliance with ROHS3 and REACH regulatory requirements
• Identical critical interface dimensions (tab width 0.110")
• Matching material composition and electrical properties
• UL approval certification providing additional quality assurance
• Bulk packaging availability supporting production requirements

The dimensional differences in tab thickness, tab length, and overall length do not affect functional compatibility in quick-connect terminal applications where the tab width determines the mating interface.

Frequently Asked Questions (FAQ)

Q: Why is the Harwin S4011-46 listed as obsolete? A: Obsolete status indicates the manufacturer has discontinued production. The Keystone Electronics 1211 provides functional equivalence for replacement in active designs and production support.

Q: Are the dimensional differences between S4011-46 and Keystone 1211 significant? A: No. The critical interface dimension is tab width (0.110"), which is identical. Variations in tab thickness (0.031" to 0.032"), tab length (0.238" to 0.280"), and overall length (0.396" to 0.542") are within acceptable tolerance ranges for quick-connect terminal applications and do not affect mating compatibility.

Q: Does the Keystone 1211 meet the same regulatory requirements? A: Yes. Both parts are ROHS3 compliant and REACH unaffected. The Keystone 1211 additionally carries UL approval certification.

Q: What is the packaging difference? A: The Harwin S4011-46 packaging is not specified. The Keystone Electronics 1211 is supplied in bulk packaging, suitable for production assembly operations.

Q: Can I use the Keystone 1211 as a direct replacement in existing designs? A: Yes. The Keystone 1211 meets all critical substitution parameters for the S4011-46 and is compatible with the same mating connectors and PCB through-hole mounting specifications.