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S1731-06 Equivalent & Substitute Parts
Part Overview
The S1731-06 is a 2-position (1 x 2) non-insulated shunt connector manufactured by Harwin Inc., designed for SMD applications with a 0.130" (3.30mm) pitch and tin-lead contact finish. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing production and maintenance applications. The part carries a 10A current rating and operates at Moisture Sensitivity Level 1 (unlimited exposure tolerance).
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Harwin Inc. |
| Number of Positions | 2 (1 x 2) |
| Pitch | 0.130" (3.30mm) |
| Height | 0.100" (2.54mm) |
| Contact Finish | Tin-Lead |
| Current Rating | 10A |
| Type | Non-Insulated |
| Product Status | Obsolete |
| RoHS Status | RoHS non-compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the S1731-06 is determined by the following critical parameters:
- Position Configuration: 2 (1 x 2) grid arrangement
- Pitch Tolerance: 0.130" (3.30mm) nominal, with minor pitch variation acceptable within standard manufacturing tolerances
- Height: 0.100" (2.54mm) fixed dimension
- Current Capacity: 10A minimum requirement
- Contact Material: Tin or tin-lead finish acceptable
- Type Classification: Non-insulated connector type
- Moisture Sensitivity: MSL 1 or better
The S1731-46R qualifies as a direct substitute based on matching position count, height, current rating, and connector type. The pitch specification differs slightly (0.119" vs. 0.130"), falling within acceptable manufacturing tolerances for this connector class. The S1731-46R represents an active product with improved compliance status.
Parameter Comparison
| Parameter | S1731-06 (Main Part) | S1731-46R (Substitute) |
|---|---|---|
| Manufacturer | Harwin Inc. | Harwin Inc. |
| Number of Positions | 2 (1 x 2) | 2 (1 x 2) |
| Pitch | 0.130" (3.30mm) | 0.119" (3.02mm) |
| Height | 0.100" (2.54mm) | 0.100" (2.54mm) |
| Contact Finish | Tin-Lead | Tin |
| Contact Finish Thickness | 118.1µin (3.00µm) | 118.1µin (3.00µm) |
| Current Rating | 10A | 10A |
| Type | Non-Insulated | Non-Insulated |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) |
| Series | — | EZ BoardWare |
Engineering Selection Recommendations
The S1731-46R is the designated substitute for the obsolete S1731-06. Selection of the S1731-46R provides the following advantages:
- Active Product Status: The S1731-46R maintains active manufacturing status with 6350 units in stock, ensuring supply chain continuity.
- Regulatory Compliance: ROHS3 compliance of the S1731-46R addresses modern regulatory requirements, whereas the S1731-06 is RoHS non-compliant.
- Functional Equivalence: Both parts maintain identical position count, height, and current rating specifications required for direct substitution.
- Contact Material: The tin contact finish of the S1731-46R is compatible with tin-lead solder processes and meets equivalent electrical performance standards.
- Pitch Consideration: The 0.119" pitch of the S1731-46R represents a minor dimensional variation from the 0.130" specification of the S1731-06, within acceptable tolerance ranges for this connector category.
Frequently Asked Questions (FAQ)
Q: Can the S1731-46R directly replace the S1731-06 in existing PCB designs?
A: The S1731-46R is functionally equivalent for applications requiring a 2-position non-insulated shunt connector with 10A current capacity. The pitch difference (0.119" vs. 0.130") is a minor dimensional variation. PCB footprint verification is necessary to confirm mechanical fit within the specific application layout.
Q: What is the significance of the pitch difference between these parts?
A: The pitch specification defines the center-to-center spacing between connector positions. The S1731-46R pitch of 0.119" (3.02mm) differs from the S1731-06 pitch of 0.130" (3.30mm). This variation must be evaluated against the PCB pad layout to determine compatibility.
Q: Why is the S1731-06 obsolete?
A: The S1731-06 is classified as obsolete by the manufacturer. The S1731-46R represents the active product line continuation within the Harwin EZ BoardWare series, offering improved compliance and supply availability.
Q: Does the contact finish difference affect electrical performance?
A: Both tin and tin-lead contact finishes provide equivalent electrical conductivity and current-carrying capacity at the 10A rating. The tin finish of the S1731-46R is compatible with standard solder processes.
Q: What packaging options are available for the S1731-46R?
A: The S1731-46R is supplied in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for both manual and automated assembly processes.
Q: Are there any moisture sensitivity concerns with either part?
A: Both the S1731-06 and S1731-46R carry MSL 1 (Unlimited) ratings, indicating no moisture sensitivity restrictions during storage or handling.
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