LTL-2755Y LED Indicator Bar Equivalent & Substitute Parts

Part Overview

The LTL-2755Y is an active yellow LED circuit board indicator bar manufactured by Lite-On Inc. This through-hole mounted component is designed for DIP applications requiring a single bar configuration with diffused lens characteristics. The component is ROHS3 compliant and maintains unlimited moisture sensitivity rating (MSL 1), making it suitable for standard industrial and commercial applications. Substitute parts may be required due to inventory availability, lead time considerations, or specific application requirements within the allowable electrical and mechanical parameter ranges.

Substiute Parts

LTL-2755Y

Lite-On Inc.In Stock: 1175LTL-2755Y Datasheet

Current PartRFQ

KB2755YW

KingbrightIn Stock: 3959KB2755YW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTL-2755Y is determined by the following critical parameters:

Primary Compatibility Criteria:

• Color: Yellow (wavelength range 585-588nm acceptable)
• Configuration: Bar - Single, DIP
• Voltage Rating: 2.1V
• Mounting Type: Through Hole
• Lens Type: Diffused
• RoHS Compliance: ROHS3 Compliant

Secondary Considerations:

• Current Rating: 80mA (main part) vs. 30mA (substitute) - substitute operates at lower current
• Millicandela Rating: 8mcd (main part) vs. 24mcd (substitute) - substitute provides higher luminous intensity
• Lens Size: 8.89mm (main part) vs. unspecified (substitute)
• Lens Style: Square with Flat Top (main part) vs. unspecified (substitute)

The KB2755YW from Kingbright meets the primary compatibility criteria and maintains equivalent electrical and mechanical characteristics within the allowable parameter ranges for this product category.

Parameter Comparison

Engineering Selection Recommendations

Both the LTL-2755Y and KB2755YW are active products with ROHS3 compliance and unlimited moisture sensitivity ratings, qualifying them for equivalent use in circuit board indicator applications. Selection between these parts should be based on the following factors:

LTL-2755Y (Lite-On Inc.): Select this part when the application requires the specified 80mA current rating and 8mcd luminous intensity. This part maintains the exact lens style specification (Square with Flat Top) and lens size (8.89mm).

KB2755YW (Kingbright): Select this part when higher luminous intensity (24mcd) is acceptable or beneficial for the application, and when the lower current requirement (30mA) aligns with circuit design parameters. This part operates at reduced current consumption while providing increased brightness output.

Both parts maintain identical voltage ratings (2.1V), mounting type (Through Hole), and compliance certifications, ensuring functional equivalence within the specified parameter ranges.

Frequently Asked Questions (FAQ)

Q: Can KB2755YW be used as a direct replacement for LTL-2755Y?

A: Yes, within the allowable electrical and mechanical parameter ranges. Both parts share identical voltage ratings (2.1V), configuration (Bar - Single, DIP), mounting type (Through Hole), and compliance status (ROHS3). The KB2755YW operates at lower current (30mA vs. 80mA) and provides higher luminous intensity (24mcd vs. 8mcd).

Q: What are the key differences between these parts?

A: The primary differences are current rating (80mA vs. 30mA), millicandela rating (8mcd vs. 24mcd), and wavelength peak (585nm vs. 588nm). The KB2755YW also specifies a white diffused lens type, while the LTL-2755Y specifies a square with flat top lens style at 8.89mm.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, carry MSL 1 (Unlimited) ratings, and maintain active product status. Both are classified under ECCN EAR99 and HTSUS 8541.41.0000.

Q: How do the lens specifications affect substitution?

A: The LTL-2755Y specifies a square with flat top lens style at 8.89mm. The KB2755YW does not specify lens style or size parameters. Applications requiring specific lens geometry should verify compatibility with the KB2755YW before selection.

Q: What is the impact of the different current ratings?

A: The KB2755YW requires only 30mA compared to the LTL-2755Y's 80mA. This lower current consumption may reduce power dissipation and heat generation in the circuit. Circuit design must accommodate the lower current requirement.

Q: Can wavelength differences affect application performance?

A: Both parts emit yellow light within a narrow wavelength range (585nm vs. 588nm). This 3nm difference is negligible for standard indicator applications and does not affect functional equivalence.