LTL-433Y Yellow Diffused LED Equivalent & Substitute Parts

Part Overview

The LTL-433Y is an active yellow diffused through-hole LED manufactured by Lite-On Inc., designed for indication applications with a dominant wavelength of 590nm. This component is specified for 2.1V forward voltage operation at 10mA test current with a rectangular lens form factor (5.00mm x 2.00mm). The part is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when design requirements permit tolerance in optical output, viewing angle, or test current specifications while maintaining core functional compatibility in yellow indication circuits.

Substiute Parts

LTL-433Y

Lite-On Inc.In Stock: 761LTL-433Y Datasheet

Current PartRFQ

HLMP-S301

Broadcom LimitedIn Stock: 3223HLMP-S301 Datasheet

MFR RecommendedRFQ

HLMP-S301-B0000

Broadcom LimitedIn Stock: 26896HLMP-S301-B0000 Datasheet

MFR RecommendedRFQ

XSUY18D

SunLEDIn Stock: 18460XSUY18D Datasheet

MFR RecommendedRFQ

5219452F

DialightIn Stock: 57565219452F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following parameters:

Primary Compatibility Criteria:

• Color: Yellow
• Lens Transparency: Diffused
• Lens Style: Rectangle with Flat Top
• Mounting Type: Through Hole
• Package / Case: Radial
• Voltage - Forward (Vf) Typical: 2.1V
• RoHS Status: ROHS3 Compliant
• Product Status: Active

Secondary Tolerance Parameters (allowable variation):

• Lens Size: 5.00mm x 2.00mm ±0.06mm
• Current - Test: 10mA to 20mA
• Wavelength - Dominant: 585nm to 590nm
• Viewing Angle: 110° to 140°
• Height (Max): 7.00mm to 8.00mm
• Millicandela Rating: 2.1mcd to 4mcd

All identified substitutes maintain the core yellow indication function, through-hole radial package configuration, and 2.1V forward voltage specification. Variations in test current, viewing angle, and optical intensity are within acceptable ranges for standard indication circuit applications.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and ROHS3 compliance, confirming ongoing manufacturing support and regulatory alignment with the LTL-433Y.

HLMP-S301 and HLMP-S301-B0000 (Broadcom): These parts operate at 2.1V forward voltage with 20mA test current. The lens dimensions vary by 0.06mm to 0.11mm from the original specification. Viewing angle is reduced to 110° compared to the LTL-433Y's 140°. These parts are suitable for applications where higher test current operation is acceptable and narrower viewing angle does not compromise circuit function.

XSUY18D (SunLED): This part operates at 1.95V forward voltage with 10mA test current, matching the original test current specification. Lens dimensions and height are identical to the LTL-433Y. Millicandela rating is 4mcd, exceeding the original 3.7mcd. Viewing angle is 110°. This part is suitable for applications where lower forward voltage operation is beneficial and optical intensity increase is tolerable.

5219452F (Dialight): This part operates at 2.1V forward voltage with 10mA test current, matching both voltage and current specifications of the LTL-433Y. Lens dimensions, height, viewing angle (140°), and millicandela rating (3.7mcd) are identical to the original specification. This part provides the closest electrical and optical equivalence to the LTL-433Y.

Frequently Asked Questions (FAQ)

Q: Can HLMP-S301 and HLMP-S301-B0000 be used as direct replacements for LTL-433Y?

A: These Broadcom parts are functionally compatible in yellow indication circuits. The 20mA test current specification requires circuit current-limiting verification. The reduced viewing angle (110° versus 140°) may affect visibility in applications requiring wide-angle indication. Lens size variation of 0.06mm to 0.11mm is within mechanical tolerance for standard through-hole PCB mounting.

Q: What is the difference between HLMP-S301 and HLMP-S301-B0000?

A: Both parts share identical electrical specifications (2.1V, 20mA test current) and mechanical form factors. HLMP-S301-B0000 specifies a millicandela rating of 2.1mcd, while HLMP-S301 does not provide this specification. HLMP-S301-B0000 has significantly higher inventory availability (26,845 pcs versus 3,188 pcs).

Q: Is XSUY18D suitable for direct substitution?

A: XSUY18D is compatible for yellow indication applications. The 1.95V forward voltage is 0.15V lower than the LTL-433Y, which may reduce power consumption in current-limited circuits. The 4mcd optical intensity exceeds the original 3.7mcd specification. The 110° viewing angle is narrower than the original 140°. These differences are acceptable for standard indication circuits where optical intensity increase and narrower viewing angle do not conflict with application requirements.

Q: How does 5219452F compare to the LTL-433Y?

A: The 5219452F provides the closest electrical and optical equivalence. Forward voltage (2.1V), test current (10mA), viewing angle (140°), and millicandela rating (3.7mcd) are identical to the LTL-433Y. Lens dimensions and height match the original specification. This part is suitable for direct substitution in applications requiring equivalent performance characteristics.

Q: What factors should determine substitute part selection?

A: Selection should be based on circuit current-limiting capability, required viewing angle for the application, acceptable optical intensity range, and available inventory. The 5219452F offers closest equivalence. XSUY18D is suitable where lower forward voltage operation is beneficial. HLMP-S301 and HLMP-S301-B0000 are suitable where higher test current operation is acceptable and narrower viewing angle does not compromise function.

Q: Are all substitute parts through-hole radial package compatible with LTL-433Y PCB footprints?

A: All identified substitutes use radial through-hole package configuration. Lens size variations of ±0.06mm to ±0.11mm and height variations of ±0.50mm are within standard mechanical tolerance for through-hole mounting. PCB footprint compatibility should be verified for applications with tight mechanical constraints.