TE Connectivity 2-1571986-9 Rocker Switch SPDT Equivalent & Substitute Parts

Part Overview

The TE Connectivity 2-1571986-9 is a Panel Mount, Snap-In rocker switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 0.4VA at 20V AC/DC operation. This component features a concave black actuator with PC pin termination and epoxy sealed terminals suitable for general switching applications requiring low-voltage, low-current control.

The 2-1571986-9 is classified as Obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications. The substitute part 3-1571986-4 shares the same base product platform and mechanical interface while offering enhanced electrical ratings and active product status.

Substiute Parts

2-1571986-9

TE Connectivity AMP ConnectorsIn Stock: 8472-1571986-9 Datasheet

Current PartRFQ

3-1571986-4

TE Connectivity ALCOSWITCH SwitchesIn Stock: 12713-1571986-4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The TE Connectivity 3-1571986-4 qualifies as a functional substitute for the 2-1571986-9 based on the following alignment of critical parameters:

Shared Mechanical Characteristics:

• Identical SPDT circuit configuration
• Identical Panel Mount, Snap-In mounting type
• Identical concave black actuator design
• Identical operating temperature range (-30°C to 85°C)
• Identical electrical life rating (6,000 cycles)
• Identical epoxy sealed terminal feature
• Compatible panel cutout dimensions (15.24mm x 12.70mm vs. 15.75mm x 12.70mm)

Enhanced Electrical Ratings:

• Current capacity increased from 0.4VA to 5A (AC/DC)
• AC voltage rating increased from 20V to 120V
• DC voltage rating increased from 20V to 28V

Termination Difference:

• Main part: PC Pin termination
• Substitute part: Solder Lug termination

The substitute part operates within a broader electrical envelope while maintaining mechanical compatibility and identical switching function. The higher current and voltage ratings of the 3-1571986-4 provide design margin for applications previously limited by the 2-1571986-9 specifications.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The 3-1571986-4 is a direct functional substitute for the 2-1571986-9 in applications where the original part's electrical ratings are adequate or where higher ratings provide design margin. The substitute maintains identical mechanical form factor, circuit topology, and environmental operating range.

Product Status Consideration:

The 2-1571986-9 is classified as Obsolete, indicating discontinued manufacturing and limited availability. The 3-1571986-4 is Active status with confirmed inventory (1,195 pieces in stock), ensuring supply chain continuity for new designs and production replenishment.

Compliance and Certification:

The 3-1571986-4 carries ROHS3 compliance certification, meeting current regulatory requirements for electronic components in regulated markets. The 2-1571986-9 is marked as "Not applicable" for RoHS status, reflecting its obsolete classification prior to current compliance frameworks.

Termination Interface:

The primary design consideration is the termination style difference: PC Pin (main part) versus Solder Lug (substitute). This requires circuit board or harness redesign to accommodate the different connection method. PC Pin termination typically interfaces with press-fit or insertion sockets, while Solder Lug termination requires direct solder connection to PCB pads or wire harness terminals.

Electrical Rating Margin:

The substitute part's higher current (5A vs. 0.4VA) and voltage ratings (120V AC vs. 20V AC) provide operational margin for applications at or near the original part's limits. Applications operating below the 2-1571986-9 ratings will function identically with the 3-1571986-4.

Panel Cutout Compatibility:

The panel cutout dimension difference (15.75mm vs. 15.24mm width) represents a 0.51mm reduction. Existing panel apertures designed for the 2-1571986-9 may require minor modification or will accommodate the substitute with reduced lateral clearance. The height dimension (12.70mm) remains identical.

Frequently Asked Questions (FAQ)

Q: Can the 3-1571986-4 directly replace the 2-1571986-9 without circuit modification?

A: Mechanical and electrical substitution is possible. However, the termination style change from PC Pin to Solder Lug requires connection method redesign. The substitute's higher electrical ratings are backward compatible with applications using the original part's lower ratings.

Q: What is the significance of the panel cutout dimension difference?

A: The substitute part is 0.51mm narrower (15.24mm vs. 15.75mm). Existing panel apertures will accommodate the substitute with slightly increased lateral clearance. New panel designs should reference the substitute dimensions for optimal fit.

Q: Are the SPDT switching functions identical between the two parts?

A: Yes. Both parts feature identical SPDT (Single Pole Double Throw) circuit configuration with On-On switch function. The contact arrangement and switching logic are functionally equivalent.

Q: What is the impact of the termination style difference?

A: PC Pin termination (original) uses press-fit or insertion connection to sockets. Solder Lug termination (substitute) requires direct solder connection to PCB pads or wire harness terminals. Circuit board or harness redesign is necessary to accommodate this change.

Q: Does the substitute part meet current regulatory compliance?

A: Yes. The 3-1571986-4 is ROHS3 compliant, meeting current environmental and material restriction regulations. The original 2-1571986-9 predates current compliance frameworks and is marked as "Not applicable."

Q: Are the operating temperature ranges identical?

A: Yes. Both parts operate across the identical temperature range of -30°C to 85°C with identical electrical life rating of 6,000 cycles.

Q: What is the inventory status of each part?

A: The 2-1571986-9 (Obsolete) has 780 pieces in stock. The 3-1571986-4 (Active) has 1,195 pieces in stock, providing greater supply availability for ongoing production requirements.

Q: Can applications designed for 0.4VA at 20V operate with the 5A at 120V substitute?

A: Yes. The substitute's higher ratings are backward compatible. Applications operating below the original part's electrical limits will function identically with the substitute, which provides additional design margin for future load increases.

Q: What is the base product number relationship between these parts?

A: Both parts share the same base product number (1571986), indicating they are part of the same product family with common mechanical platform and design heritage.