P01-24-B-2A Equivalent & Substitute Parts

Part Overview

The P01-24-B-2A is an incandescent panel indicator manufactured by NKK Switches, designed for 24V AC applications with a 25mA current rating. This component features a white incandescent lamp with a white clear lens and a square panel cutout of 0.76" x 0.76" (19.30mm x 19.30mm). The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations where similar indicator functionality is required.

Substiute Parts

P01-24-B-2A

NKK SwitchesIn Stock: 704P01-24-B-2A Datasheet

Current PartRFQ

UB204KW036B-3JB

NKK SwitchesIn Stock: 1124UB204KW036B-3JB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P01-24-B-2A is determined by the following critical parameters:

Mechanical Compatibility: Panel cutout shape (square), cutout dimensions (0.76" x 0.76"), and lens size must accommodate physical installation in existing panel openings.

Functional Equivalence: Lamp color (white) and lens transparency characteristics must provide equivalent visual indication.

Electrical Compatibility: Voltage rating, current consumption, and rating type (AC/DC) must match or be compatible with the host circuit design.

Regulatory Compliance: RoHS3 compliance and REACH status ensure substitutes meet current environmental and safety standards.

The identified substitute UB204KW036B-3JB shares the same manufacturer (NKK Switches), white lamp color, white lens color, and square panel cutout shape. However, this substitute represents a technology transition from incandescent to LED, with corresponding changes in voltage (3.3V), current (20mA), and lens transparency (diffused). Mechanical compatibility requires verification due to differences in panel cutout dimensions (0.69" x 0.69" versus 0.76" x 0.76") and lens size (15.00mm versus 16.20mm x 16.00mm).

Parameter Comparison

Engineering Selection Recommendations

The UB204KW036B-3JB is an active product with current manufacturing support and full ROHS3 compliance, providing long-term availability advantages over the obsolete P01-24-B-2A. Both components meet equivalent environmental and regulatory standards.

Selection of UB204KW036B-3JB requires circuit redesign due to fundamental differences in electrical requirements: the substitute operates at 3.3V with 20mA current versus the original 24V AC at 25mA. This necessitates power supply modification and potential control circuit adjustments.

Mechanical integration requires assessment of panel cutout compatibility. The substitute's smaller cutout dimensions (0.69" x 0.69") and reduced lens size (15.00mm) may allow installation in existing P01-24-B-2A panel openings, but physical fit verification is required. The transition from clear to diffused lens transparency will alter visual appearance and light distribution characteristics.

Frequently Asked Questions (FAQ)

Q: Can UB204KW036B-3JB be directly installed in place of P01-24-B-2A without modifications?

A: Direct mechanical installation may be possible due to the smaller cutout dimensions of the substitute, but this requires physical verification. Electrical circuit redesign is mandatory due to voltage (24V to 3.3V) and current (25mA to 20mA) differences.

Q: What are the key differences between these two indicators?

A: The primary differences are technology type (incandescent versus LED), operating voltage (24V AC versus 3.3V), lens transparency (clear versus diffused), and panel cutout dimensions. Both maintain white lamp and lens colors and square panel cutout shapes.

Q: Are both components compliant with current environmental standards?

A: Yes. Both P01-24-B-2A and UB204KW036B-3JB are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Why is the substitute an LED instead of incandescent?

A: LED technology has become the industry standard for panel indicators due to improved reliability, longer operational life, and reduced power consumption. The P01 series incandescent design is obsolete, with active alternatives utilizing LED technology.

Q: Will the diffused lens of the substitute provide equivalent visibility to the clear lens of the original?

A: The diffused lens will distribute light differently than the clear lens, potentially affecting viewing angle and brightness perception. Visual characteristics should be evaluated for the specific application.

Q: What packaging is available for the substitute?

A: UB204KW036B-3JB is available in bulk packaging, with 1031 pieces currently in stock.