LP1S-26S-889-Z Equivalent & Substitute Parts

Part Overview

The LP1S-26S-889-Z is a pushbutton switch manufactured by Nidec Components Corporation, featuring DPDT (Double Pole Double Throw) configuration with illuminated LED capability. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations. The switch is designed for through-hole mounting with a rated capacity of 3A at 125V AC and 30V DC, utilizing a yellow LED illumination system at 2.2VDC nominal voltage.

Substiute Parts

LP1S-26S-889-Z

Nidec Components CorporationIn Stock: 779LP1S-26S-889-Z Datasheet

Current PartRFQ

UB25SKW035D-DD

NKK SwitchesIn Stock: 1218UB25SKW035D-DD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP1S-26S-889-Z is determined by the following critical parameters:

Circuit Configuration: DPDT topology is mandatory for functional equivalence, as this determines the switching capability and contact arrangement.

Current and Voltage Ratings: The substitute must support minimum 3A at 125V AC and 30V DC. Higher current ratings are acceptable as they provide design margin.

Mounting and Termination: Through-hole mounting with PC pin termination is required for mechanical and electrical compatibility with existing PCB layouts.

Illumination Characteristics: LED illumination with compatible voltage operation (nominal 2.0-2.2VDC) ensures proper indicator function within existing driver circuits.

Switch Function: On-Mom (momentary) operation is essential for maintaining identical user interaction and circuit behavior.

Compliance: ROHS3 compliance is required for regulatory alignment with current manufacturing standards.

The UB25SKW035D-DD from NKK Switches meets these substitution criteria while offering enhanced electrical life and mechanical durability characteristics.

Parameter Comparison

Engineering Selection Recommendations

The UB25SKW035D-DD qualifies as a direct substitute for the LP1S-26S-889-Z based on matching circuit topology, voltage ratings, mounting configuration, and termination style. Both components maintain ROHS3 compliance and support identical switch function operation.

The substitute component provides a higher current rating (5A versus 3A), which is acceptable for applications operating at or below the original 3A specification. The illumination voltage differential (2.0VDC versus 2.2VDC) is within typical LED driver tolerance ranges and does not preclude functional compatibility.

The UB25SKW035D-DD is classified as active product status, ensuring long-term availability and supply chain continuity compared to the obsolete LP1S-26S-889-Z. This substitution is appropriate for both replacement applications and new designs requiring DPDT pushbutton switch functionality with LED illumination.

Frequently Asked Questions (FAQ)

Q: Can the UB25SKW035D-DD directly replace the LP1S-26S-889-Z in existing designs?

A: Yes. Both components share identical circuit configuration (DPDT), voltage ratings (125V AC / 30V DC), mounting type (through-hole), termination style (PC pin), and switch function (On-Mom). The higher current rating of the substitute provides design margin without affecting compatibility.

Q: What is the impact of the illumination color difference (yellow versus amber)?

A: The color difference reflects different LED wavelengths but does not affect electrical compatibility. If color consistency is critical for user interface design, this should be evaluated against application requirements. Both colors operate at compatible voltage levels (2.0-2.2VDC).

Q: Does the lower electrical life rating of the substitute (10,000 cycles versus 30,000 cycles) affect suitability?

A: Electrical life ratings indicate switch durability under specified operating conditions. The substitute's 10,000-cycle rating remains suitable for most industrial and commercial applications. Applications requiring extended cycle life should evaluate actual usage patterns against both specifications.

Q: Are there packaging considerations for this substitution?

A: The LP1S-26S-889-Z is supplied in standard packaging, while the UB25SKW035D-DD is supplied in tray packaging. Both are through-hole components with PC pin termination, ensuring mechanical compatibility with PCB layouts. Tray packaging may offer handling and storage advantages for production environments.

Q: Is the operating temperature range difference significant?

A: The LP1S-26S-889-Z operates from -15°C to 60°C, while the UB25SKW035D-DD operates from -25°C to 50°C. The substitute provides lower temperature capability but a narrower upper temperature limit. Applications operating within -15°C to 50°C are fully compatible with both components.