TE Connectivity ALCOSWITCH 2-1571986-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity ALCOSWITCH 2-1571986-3 is a rocker switch with Single Pole Double Throw (SPDT) configuration rated for 5A at 120V AC and 28V DC. This component features a panel mount flange design with a black paddle actuator and solder lug termination. The switch is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for continued system support and new production applications.

Substiute Parts

2-1571986-3

TE Connectivity ALCOSWITCH SwitchesIn Stock: 9762-1571986-3 Datasheet

Current PartRFQ

3-1571986-4

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2-1571986-3 is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Compatibility Requirements:

• Circuit configuration must remain SPDT
• Switch function must remain On-On
• Current rating must equal or exceed 5A (AC/DC)
• Voltage rating must support minimum 120V AC and 28V DC
• Electrical life must equal or exceed 6,000 cycles

Mechanical Compatibility Requirements:

• Mounting type must be Panel Mount (flange or snap-in variants acceptable)
• Termination style must be Solder Lug
• Actuator color must be Black
• Operating temperature range must encompass -30°C to 85°C
• Base product number must be 1571986 (same product family)

The substitute part 3-1571986-4 satisfies all electrical requirements and maintains mechanical compatibility through equivalent solder lug termination and operating temperature specifications. The primary mechanical difference is the mounting interface (snap-in versus flange) and panel cutout dimensions, which represent design improvements rather than functional incompatibilities.

Parameter Comparison

Engineering Selection Recommendations

The 3-1571986-4 is the active equivalent substitute for the obsolete 2-1571986-3. Both components share identical electrical specifications and are manufactured by the same supplier within the same product family (base product number 1571986).

Product Status Consideration: The 2-1571986-3 is classified as obsolete, while the 3-1571986-4 maintains active product status with confirmed inventory availability (1,195 pieces in stock). This status difference necessitates transition to the substitute part for new production and long-term supply chain continuity.

Compliance Advantage: The 3-1571986-4 achieves ROHS3 compliance, whereas the main part lists RoHS status as not applicable. This compliance improvement aligns with current regulatory requirements for electronic components in many jurisdictions.

Mechanical Interface Differences: The primary design difference is the mounting interface. The main part uses a flange mount with larger panel cutout dimensions (27.81mm x 16.46mm), while the substitute employs a snap-in mount with reduced cutout dimensions (15.24mm x 12.70mm). Panel redesign is required to accommodate the smaller cutout if transitioning to the snap-in variant. The actuator geometry differs (paddle versus concave standard V), which may affect user interface ergonomics but does not impact electrical function.

Electrical Equivalence: All electrical parameters remain identical, including current rating, voltage specifications, circuit configuration, switch function, termination style, operating temperature range, and electrical life. Solder lug termination ensures compatibility with existing PCB designs and wiring harnesses.

Frequently Asked Questions (FAQ)

Q: Can the 3-1571986-4 directly replace the 2-1571986-3 without panel modifications?

A: Electrical substitution is direct. However, mechanical panel modifications are required due to different mounting interfaces and panel cutout dimensions. The 2-1571986-3 uses a flange mount (27.81mm x 16.46mm cutout), while the 3-1571986-4 uses snap-in mounting (15.24mm x 12.70mm cutout). Panel redesign is necessary for physical installation.

Q: Are the electrical ratings identical between these two parts?

A: Yes. Both components are rated for 5A at 120V AC and 28V DC with SPDT configuration and On-On switch function. Solder lug termination, operating temperature range (-30°C to 85°C), and electrical life (6,000 cycles) are identical.

Q: What is the significance of the different actuator types?

A: The 2-1571986-3 features a paddle actuator, while the 3-1571986-4 uses a concave (standard V) actuator. Both are black and unmarked. This difference affects user interface feel and appearance but does not impact electrical switching performance or circuit compatibility.

Q: Why is the 2-1571986-3 classified as obsolete?

A: Product status reflects manufacturer lifecycle decisions. The 3-1571986-4 represents the active continuation within the same product family, offering improved compliance (ROHS3) and modern packaging (snap-in mount).

Q: Is the snap-in mounting of the 3-1571986-4 more reliable than the flange mount of the 2-1571986-3?

A: Both mounting types are standard industry designs. Snap-in mounting offers simplified installation and reduced panel cutout size. Flange mounting provides mechanical retention through panel thickness. Selection depends on panel design requirements and installation methodology.

Q: What is the impact of the smaller panel cutout dimensions on existing designs?

A: Existing panels designed for the 2-1571986-3 (27.81mm x 16.46mm cutout) cannot accommodate the 3-1571986-4 (15.24mm x 12.70mm cutout) without modification. Panel redesign or custom adapter solutions are required for retrofit applications.

Q: Are there any inventory or lead time advantages to using the 3-1571986-4?

A: The 3-1571986-4 is listed as active with 1,195 pieces in stock, compared to the obsolete status of the 2-1571986-3. Active product status typically ensures better long-term availability and shorter lead times for future orders.

Q: Does the ROHS3 compliance of the 3-1571986-4 affect compatibility?

A: ROHS3 compliance indicates adherence to hazardous substance restrictions and does not negatively impact electrical or mechanical compatibility. This compliance status is advantageous for applications subject to environmental regulations.