TE Connectivity ALCOSWITCH 2-1571990-7 Equivalent & Substitute Parts

Part Overview

The TE Connectivity ALCOSWITCH 2-1571990-7 is a pushbutton switch with SPST-NO (Single Pole Single Throw - Normally Open) circuit configuration, rated for 0.4VA at 20V AC/DC. This component features a round plunger actuator with flush design, through-hole right-angle vertical mounting, and PC pin termination. The part operates across a temperature range of -30°C to 85°C with an electrical life rating of 80,000 cycles and process-sealed construction.

The 2-1571990-7 is classified as obsolete. Locating equivalent or substitute components is necessary to support ongoing maintenance, repair, and new design requirements where this part is specified or currently deployed.

Substiute Parts

2-1571990-7

TE Connectivity ALCOSWITCH SwitchesIn Stock: 7012-1571990-7 Datasheet

Current PartRFQ

TSPD11FGPCV0

TE Connectivity ALCOSWITCH SwitchesIn Stock: 818TSPD11FGPCV0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2-1571990-7 is constrained by the following critical parameters:

Electrical Compatibility Parameters:

• Current rating must equal or exceed 0.4VA
• Voltage rating must support minimum 20V AC and 20V DC
• Circuit configuration determines switching behavior and pin count

Mechanical Compatibility Parameters:

• Mounting type must be through-hole to match PCB layout requirements
• Actuator type (round plunger) must be compatible with mechanical interfaces
• Termination style must be PC pin for direct board connection

Environmental & Reliability Parameters:

• Operating temperature range must encompass -30°C to 85°C
• Process-sealed construction provides environmental protection

The substitute part TSPD11FGPCV0 shares the same manufacturer (TE Connectivity ALCOSWITCH), series (TSP), voltage ratings (20V AC/DC), current rating (0.4VA), mounting type (through-hole), actuator type (round plunger), termination style (PC pin), operating temperature range (-30°C to 85°C), and process-sealed features. The primary difference is circuit configuration: TSPD11FGPCV0 provides SPDT (Single Pole Double Throw) functionality with On-Mom switching, compared to the SPST-NO configuration of the original part.

Parameter Comparison

Engineering Selection Recommendations

The 2-1571990-7 is an obsolete component within the TE Connectivity ALCOSWITCH TSP series. The TSPD11FGPCV0 is an active product from the same manufacturer and series, providing electrical and mechanical compatibility across all critical parameters.

Status-Based Considerations:

The TSPD11FGPCV0 holds active product status, ensuring ongoing availability and manufacturer support. This contrasts with the obsolete status of the 2-1571990-7, which presents supply chain risk for future procurement.

Electrical Equivalence:

Both parts maintain identical voltage ratings (20V AC/DC) and current capacity (0.4VA). The TSPD11FGPCV0 provides SPDT circuit configuration compared to the SPST-NO of the original part. This difference affects circuit topology: SPDT switches between two positions, while SPST-NO provides a single normally-open contact. Circuit redesign may be required if the application depends on SPST-NO functionality.

Mechanical Compatibility:

Both components feature through-hole mounting with PC pin termination, round plunger actuators, and process-sealed construction. Operating temperature ranges are identical (-30°C to 85°C). The TSPD11FGPCV0 specifies through-hole mounting without the right-angle vertical designation of the original part; physical layout verification is necessary.

Reliability Metrics:

The TSPD11FGPCV0 provides 60,000 electrical life cycles compared to 80,000 cycles for the 2-1571990-7. Applications requiring the higher cycle count must evaluate this reduction against actual operational demands.

Frequently Asked Questions (FAQ)

Q: Can the TSPD11FGPCV0 directly replace the 2-1571990-7 in existing designs?

A: Direct replacement requires circuit topology compatibility. The 2-1571990-7 is SPST-NO (single contact, normally open), while the TSPD11FGPCV0 is SPDT (two contacts, switching between positions). If the application uses only one contact of the SPDT part, functional replacement is possible. If the design requires the specific SPST-NO behavior, circuit modification is necessary.

Q: Are the mounting orientations identical between these parts?

A: Both parts use through-hole PC pin termination. The 2-1571990-7 specifies right-angle vertical mounting, while the TSPD11FGPCV0 specifies through-hole mounting without orientation detail. Physical dimensions and mounting hole spacing must be verified against PCB layout before substitution.

Q: What is the impact of the reduced electrical life rating?

A: The TSPD11FGPCV0 provides 60,000 electrical life cycles versus 80,000 for the original part. This represents a 25% reduction. Applications with cycle counts below 60,000 are unaffected. High-cycle applications must evaluate whether the reduced rating meets operational requirements.

Q: Are both parts RoHS compliant?

A: Both parts list RoHS Status as "Not applicable," indicating they do not fall under RoHS directive scope. Compliance verification with specific regulatory requirements for your application is necessary.

Q: What is the difference between Off-Mom and On-Mom switch functions?

A: Off-Mom (2-1571990-7) returns to the off state when the actuator is released. On-Mom (TSPD11FGPCV0) returns to the on state when released. This functional difference affects circuit behavior and must align with application requirements.

Q: Is the TSPD11FGPCV0 available in the same packaging as the 2-1571990-7?

A: The 2-1571990-7 packaging is listed as "-" (not specified). The TSPD11FGPCV0 is available in bulk packaging. Confirm packaging requirements for your procurement and assembly processes.