PL-624-B Equivalent & Substitute Parts

Part Overview

The PL-624-B is an LED panel indicator manufactured by Littelfuse Inc., designed for 24V DC applications with a blue LED and quick connect termination. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations. The part features a round lens with domed top and 0.250" (6.3mm) quick connect termination, suitable for standard 0.55" (13.87mm) panel cutouts.

Substiute Parts

PL-624-B

Littelfuse Inc.In Stock: 1063PL-624-B Datasheet

Current PartRFQ

Q14P1CXXB24E

APEM Inc.In Stock: 1093Q14P1CXXB24E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PL-624-B is determined by strict alignment of the following critical parameters:

• Voltage Rating: 24V DC operation required
• Lamp Color: Blue LED specification
• Panel Cutout Dimensions: 0.55" (13.97mm) round cutout compatibility
• Lens Style: Round with domed top configuration
• Termination Style: Quick connect interface for mechanical and electrical compatibility
• Regulatory Compliance: ROHS3 compliance maintained

The Q14P1CXXB24E from APEM Inc. satisfies all substitution criteria within these parameters. Additional specifications such as current rating, millicandela output, and viewing angle represent performance enhancements rather than substitution barriers, as they do not affect mechanical fit or basic functional operation at the specified voltage.

Parameter Comparison

Engineering Selection Recommendations

The Q14P1CXXB24E serves as the direct substitute for the obsolete PL-624-B based on matching voltage, color, panel cutout dimensions, lens configuration, and regulatory compliance. Both components maintain ROHS3 compliance and DC voltage ratings.

The Q14P1CXXB24E is classified as active product status, ensuring continued availability and supply chain reliability. The termination connector differs in gauge (0.110" versus 0.250"), requiring verification of mating connector compatibility in the target application. The Q14P1CXXB24E provides additional specifications including defined current rating (20mA), ingress protection (IP67), and enhanced optical performance (540mcd, 100° viewing angle), which represent functional improvements over the original component.

Frequently Asked Questions (FAQ)

Q: Can the Q14P1CXXB24E directly replace the PL-624-B without modification?

A: Mechanical fit is compatible for the panel cutout. The termination connector differs in pin gauge (0.110" versus 0.250"), requiring confirmation that mating connectors in the existing assembly accommodate the Q14P1CXXB24E connector specification.

Q: What are the key compatibility factors for this substitution?

A: The critical compatibility factors are 24V DC voltage rating, blue LED color, round 0.55" panel cutout dimensions, round domed lens style, and quick connect termination type. These parameters ensure functional and mechanical equivalence.

Q: Does the Q14P1CXXB24E meet the same regulatory requirements?

A: Yes. Both the PL-624-B and Q14P1CXXB24E maintain ROHS3 compliance and carry identical ECCN and HTSUS classifications.

Q: What performance differences exist between these components?

A: The Q14P1CXXB24E specifies 20mA current draw, 540mcd brightness, diffused lens transparency, 100° viewing angle, and IP67 ingress protection. The PL-624-B does not provide these specifications. These represent performance enhancements rather than substitution limitations.

Q: Is the Q14P1CXXB24E available for immediate procurement?

A: Yes. The Q14P1CXXB24E is classified as active product status with documented inventory availability, unlike the obsolete PL-624-B.