LTL-53173Y LED Indicator Bar - Equivalent & Substitute Parts

Part Overview

The LTL-53173Y is an active yellow LED circuit board indicator bar manufactured by Lite-On Inc. This single DIP configuration component is designed for through-hole mounting applications requiring visual status indication. The part is ROHS3 compliant and carries MSL Level 1 (unlimited moisture sensitivity rating), making it suitable for standard storage and handling conditions. Substitute parts may be required due to inventory constraints, end-of-life considerations, or specific application requirements related to lens size, current draw, or brightness characteristics.

Substiute Parts

LTL-53173Y

Lite-On Inc.In Stock: 1198LTL-53173Y Datasheet

Current PartRFQ

DE2YD

KingbrightIn Stock: 1387DE2YD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The DE2YD from Kingbright is identified as a manufacturer-recommended substitute for the LTL-53173Y. Substitution eligibility is determined by the following critical parameters:

• Color Match: Both parts are yellow LEDs, ensuring consistent visual indication across the application
• Configuration: Both utilize Bar - Single, DIP configuration for identical mounting compatibility
• Voltage Rating: Both operate at 2.1V, allowing direct circuit integration without modification
• Wavelength Compatibility: Peak wavelengths of 585nm (LTL-53173Y) and 590nm (DE2YD) fall within the yellow spectrum range, providing functionally equivalent visual output
• Compliance: Both parts are ROHS3 compliant with MSL Level 1 rating, meeting identical environmental and regulatory requirements

Noted Differences: The DE2YD features a larger lens size (14.00mm x 7.50mm versus 12.70mm x 6.35mm), operates at lower current (30mA versus 80mA), and delivers higher brightness (26mcd versus 4.2mcd). These differences must be evaluated against specific application constraints regarding physical space, power budget, and required luminous intensity.

Parameter Comparison

Engineering Selection Recommendations

Both the LTL-53173Y and DE2YD are active products with full ROHS3 compliance and MSL Level 1 ratings, confirming their suitability for standard manufacturing and deployment environments.

Selection Criteria:

• LTL-53173Y: Select when the application requires the original lens dimensions (12.70mm x 6.35mm) and higher current operation (80mA) is acceptable or required by circuit design
• DE2YD: Select when the application can accommodate a larger lens footprint (14.00mm x 7.50mm), requires lower power consumption (30mA), or benefits from increased brightness output (26mcd)

Both parts maintain identical electrical interface requirements (2.1V operation) and mounting configuration (Bar - Single, DIP), enabling direct substitution at the circuit board level when physical space and power budget constraints are satisfied.

Frequently Asked Questions (FAQ)

Q: Can DE2YD directly replace LTL-53173Y in all applications?

A: Direct replacement is possible only when the application accommodates the larger lens size (14.00mm x 7.50mm versus 12.70mm x 6.35mm) and the lower current draw (30mA versus 80mA) aligns with circuit design parameters. Both parts share identical voltage ratings (2.1V) and DIP configuration.

Q: What is the significance of the wavelength difference (585nm versus 590nm)?

A: Both wavelengths fall within the yellow spectrum range. The 5nm difference is imperceptible to human vision and does not affect functional compatibility for indicator applications.

Q: Does the diffused, tinted lens type on DE2YD affect compatibility?

A: The diffused, tinted lens on DE2YD alters light distribution and appearance compared to the unspecified lens type on LTL-53173Y. This may impact visual perception in the application but does not affect electrical compatibility.

Q: Are there compliance or environmental differences between these parts?

A: Both parts are ROHS3 compliant with MSL Level 1 (unlimited) ratings. No compliance or environmental handling differences exist between the two components.

Q: What is the impact of the brightness difference (4.2mcd versus 26mcd)?

A: The DE2YD delivers significantly higher luminous intensity. Applications requiring specific brightness levels must account for this difference in circuit design or optical integration.