Keystone Electronics 1278 Spade Terminal Connector - Equivalent & Substitute Parts

Part Overview

The Keystone Electronics 1278 is a 6 stud spade terminal connector designed for crimp termination applications. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing procurement and system maintenance. The 1278 serves as a standard non-insulated brass terminal with tin contact finish, suitable for free-hanging inline mounting configurations.

Substiute Parts

1278

Keystone ElectronicsIn Stock: 8901278 Datasheet

Current PartRFQ

1279

Keystone ElectronicsIn Stock: 7451279 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Keystone Electronics 1278 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Manufacturer: Keystone Electronics
• Category: Terminals
• Terminal Type: Standard
• Mounting Type: Free Hanging (In-Line)
• Termination: Crimp
• Insulation: Non-Insulated
• Contact Material: Brass
• Contact Finish: Tin
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

Allowable Variation Parameters:

• Stud/Tab Size: Larger stud sizes (8 stud) are acceptable substitutes when system design permits increased stud diameter accommodation
• Tongue Inside Opening: Proportional increase corresponding to stud size increase
• Product Status: Active status preferred over obsolete for long-term availability

The Keystone Electronics 1279 qualifies as a substitute part based on these criteria, with the primary difference being an increased stud size from 6 to 8, accompanied by a corresponding increase in tongue inside opening dimension.

Parameter Comparison

Engineering Selection Recommendations

The Keystone Electronics 1279 is the designated substitute for the obsolete 1278 spade terminal connector. Selection of the 1279 is supported by the following factors:

Compliance & Regulatory Status: Both parts maintain identical ROHS3 compliance, REACH unaffected status, and EAR99 export classification, ensuring regulatory continuity in applications requiring these certifications.

Product Availability: The 1279 maintains active product status with current inventory availability (658 pcs), whereas the 1278 is obsolete. This distinction is critical for procurement planning and long-term supply chain reliability.

Functional Compatibility: The 1279 retains all core functional parameters of the 1278, including crimp termination methodology, brass contact material with tin finish, non-insulated construction, and free-hanging inline mounting configuration.

Dimensional Considerations: The primary difference between these parts is the stud size increase from 6 to 8, with a corresponding increase in tongue inside opening from 0.140" to 0.171". System designs must accommodate this stud diameter increase to ensure proper mechanical fit and electrical contact integrity.

Frequently Asked Questions (FAQ)

Q: Can the 1279 be used as a direct replacement for the 1278 in all applications?

A: The 1279 functions as a substitute where system design permits accommodation of the larger 8 stud diameter. The increased stud size requires compatible mating hardware. Applications with fixed stud hole dimensions designed for 6 stud terminals require mechanical redesign to accept the 8 stud configuration.

Q: What is the primary reason for substituting the 1278 with the 1279?

A: The 1278 is classified as obsolete, making the active 1279 the appropriate long-term procurement alternative. Both parts share identical core specifications including terminal type, mounting method, termination style, material composition, and regulatory compliance.

Q: Are there any electrical performance differences between the 1278 and 1279?

A: Both parts utilize identical contact material (brass), contact finish (tin), and termination methodology (crimp). Electrical performance characteristics are functionally equivalent when properly terminated and mated to compatible stud sizes.

Q: What is the significance of the tongue inside opening dimension difference?

A: The tongue inside opening dimension (0.140" for 1278 versus 0.171" for 1279) is proportional to the stud size increase. This dimension determines the clearance between the terminal tongue and the stud post. The larger opening accommodates the 8 stud diameter while maintaining proper electrical contact.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the 1278 and 1279 maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for applications requiring these certifications.

Q: What inventory status should influence procurement decisions?

A: The 1279 is currently in active production with 658 pcs available. The 1278 is obsolete with limited remaining inventory (839 pcs). For new designs and ongoing production, the 1279 is the recommended procurement choice to ensure supply continuity.