SS-33-8 Equivalent & Substitute Parts Reference

Part Overview

The SS-33-8 is an 8 stud spade terminal connector manufactured by 3M, designed for crimp termination of 10-12 AWG wire. This non-insulated spring snap terminal operates as a free-hanging in-line connector within the Highland™ series. The part maintains Active product status and is RoHS Compliant with unlimited moisture sensitivity rating (MSL 1). Substitute parts become necessary when primary inventory is unavailable or when design requirements permit alternative manufacturers meeting identical electrical and mechanical specifications.

Substiute Parts

SS-33-8

3MIn Stock: 1104SS-33-8 Datasheet

Current PartRFQ

8261

Keystone ElectronicsIn Stock: 8108261 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SS-33-8 is determined by strict equivalence across the following critical parameters:

• Stud size: 8 Stud (mechanical fit requirement)
• Wire gauge range: 10-12 AWG (electrical and crimp compatibility)
• Overall dimensions: 0.320" width and 0.730" length (physical fit in assemblies)
• Termination method: Crimp (assembly process compatibility)
• Terminal configuration: Spring, Snap (functional behavior)
• Mounting orientation: Free Hanging (In-Line) (installation method)
• Insulation status: Non-Insulated (electrical exposure design)

The Keystone Electronics part 8261 meets all these criteria, establishing it as a direct functional equivalent. Both parts share identical stud size, wire gauge rating, outer dimensions, termination length, and mounting characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the SS-33-8 and 8261 maintain Active product status with equivalent compliance certifications. The SS-33-8 carries RoHS Compliant designation, while the 8261 meets the more recent ROHS3 Compliant standard. Both parts achieve REACH Unaffected status and unlimited moisture sensitivity rating (MSL 1), confirming suitability for equivalent environmental conditions.

The 8261 provides specified contact material (Copper, ETP) and tin finish, whereas the SS-33-8 does not document these properties. The dimensional variance in ring center to termination length (0.280" versus 0.287") falls within typical manufacturing tolerances for this connector class and does not affect functional compatibility.

Selection between these parts should be based on availability, lead time requirements, and any design-specific material specifications already established in the assembly documentation.

Frequently Asked Questions (FAQ)

Q: Can the Keystone Electronics 8261 directly replace the 3M SS-33-8 in existing assemblies?

A: Yes. Both parts share identical stud size (8), wire gauge rating (10-12 AWG), overall dimensions (0.320" × 0.730"), termination length (0.250"), and mounting configuration (free-hanging in-line). The minor dimensional variance in ring center to termination length (0.007" difference) is within standard manufacturing tolerance and does not affect mechanical fit or electrical function.

Q: What determines whether a spade terminal can substitute for the SS-33-8?

A: Substitution requires exact equivalence in stud size, wire gauge range, overall width and length, termination method (crimp), terminal type (spring snap), mounting orientation (free-hanging), and insulation status (non-insulated). Deviations in any of these parameters disqualify a part from direct substitution.

Q: Are there compliance differences between the SS-33-8 and 8261?

A: The SS-33-8 is RoHS Compliant; the 8261 is ROHS3 Compliant. Both achieve REACH Unaffected status and MSL 1 rating. ROHS3 represents a more recent compliance iteration and does not create incompatibility with RoHS Compliant designs.

Q: Does the unspecified contact material on the SS-33-8 affect substitution?

A: No. The 8261 specifies Copper, ETP contact material with tin finish. The absence of documented material specifications on the SS-33-8 does not prevent functional equivalence, as both parts meet the same electrical and mechanical requirements for 10-12 AWG crimp termination.

Q: What packaging considerations apply to these parts?

A: Both the SS-33-8 and 8261 are supplied in Bulk packaging. Inventory availability differs: SS-33-8 has 1029 pieces in stock; 8261 has 759 pieces in stock. Bulk packaging is standard for spade terminal connectors and does not affect substitution eligibility.