LTL-4231NHDP LED Circuit Board Indicator Equivalent & Substitute Parts

Part Overview

The LTL-4231NHDP is a 3mm green LED circuit board indicator manufactured by Lite-On Inc., designed for through-hole, right-angle mounting applications. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing production and maintenance requirements. The part delivers 12.6mcd brightness at 30mA forward current with a 2.1V voltage rating and 60° viewing angle, configured as a single green diffused indicator with a domed top lens.

Substiute Parts

LTL-4231NHDP

Lite-On Inc.In Stock: 1124LTL-4231NHDP Datasheet

Current PartRFQ

LTL-4231NHBP

LITEONIn Stock: 8405LTL-4231NHBP Datasheet

DirectRFQ

LTL-155GHA

Lite-On Inc.In Stock: 946LTL-155GHA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTL-4231NHDP are qualified based on strict electrical and mechanical parameter matching within the LED circuit board indicator category. The following parameters determine substitution eligibility:

Critical Matching Parameters:

• Color: Green
• Wavelength - Peak: 565nm
• Configuration: Single
• Current Rating: 30mA
• Millicandela Rating: 12.6mcd
• Viewing Angle: 60°
• Lens Type: Diffused, Tinted
• Lens Style: Round with Domed Top
• Lens Size: 3mm, T-1
• Voltage Rating: 2.1V
• Mounting Type: Through Hole, Right Angle

Two substitute parts meet these criteria and are listed in the manufacturer's substitution database for the LTL-4231NHDP.

Parameter Comparison

Engineering Selection Recommendations

LTL-4231NHBP is classified as a direct substitute and shares the identical base product number (LTL-4231) with the obsolete LTL-4231NHDP. This part is currently in active production status with improved compliance certifications. The LTL-4231NHBP carries ROHS3 compliance and REACH affected status, with superior moisture sensitivity rating (MSL 1 vs. MSL 2A), indicating enhanced reliability for long-term storage and deployment. Packaging is supplied in tray format rather than bulk.

LTL-155GHA is designated as the manufacturer-recommended substitute. While based on a different product line (LTL-155 vs. LTL-4231), it maintains identical electrical and mechanical specifications for the green indicator function. This part is also in active production with ROHS3 compliance and MSL 1 rating. Selection between LTL-4231NHBP and LTL-155GHA should be based on supply chain availability and existing inventory management protocols, as both parts are electrically and mechanically equivalent for the specified application.

Frequently Asked Questions (FAQ)

Q: Can LTL-4231NHBP and LTL-155GHA be used interchangeably with LTL-4231NHDP?

A: Yes. Both substitute parts match all critical electrical and mechanical parameters: 565nm wavelength, 30mA current, 12.6mcd brightness, 60° viewing angle, 2.1V voltage rating, 3mm T-1 through-hole right-angle mounting, and diffused tinted domed-top lens configuration.

Q: What is the difference between the two substitute parts?

A: LTL-4231NHBP maintains the same base product line (LTL-4231) as the obsolete part. LTL-155GHA is from a different product line (LTL-155) but delivers identical performance specifications. Both are active production parts with ROHS3 compliance and improved moisture sensitivity ratings.

Q: Does packaging format affect electrical performance?

A: No. The LTL-4231NHBP is supplied in tray packaging while the original LTL-4231NHDP was supplied in bulk. Packaging format does not affect component electrical or mechanical characteristics, only handling and storage logistics.

Q: Are there compliance differences between the main part and substitutes?

A: Yes. The obsolete LTL-4231NHDP does not specify RoHS or REACH compliance status. Both substitute parts (LTL-4231NHBP and LTL-155GHA) are ROHS3 compliant. The LTL-4231NHBP additionally carries REACH affected designation. Both substitutes have improved moisture sensitivity levels (MSL 1 vs. MSL 2A).

Q: Which substitute should be selected for new designs?

A: Both LTL-4231NHBP and LTL-155GHA are suitable for new designs. Selection should be based on supply chain availability, lead time, and existing procurement relationships with component distributors.