LTL-433EA Orange LED Diffused Through-Hole Equivalent & Substitute Parts

Part Overview

The LTL-433EA is an orange diffused LED indicator manufactured by Lite-On Inc., designed for discrete indication applications in through-hole mounting configurations. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The LTL-433EA features a 5.00mm x 2.00mm rectangular lens with diffused transparency, 2V forward voltage, and 1.7mcd brightness rating at 10mA test current.

Substiute Parts

LTL-433EA

Lite-On Inc.In Stock: 1231LTL-433EA Datasheet

Current PartRFQ

5219499F

DialightIn Stock: 8275219499F Datasheet

MFR RecommendedRFQ

HLMP-S201

Broadcom LimitedIn Stock: 21348HLMP-S201 Datasheet

MFR RecommendedRFQ

HLMP-S201-D0000

Broadcom LimitedIn Stock: 15411HLMP-S201-D0000 Datasheet

MFR RecommendedRFQ

WP113EDT

KingbrightIn Stock: 19557WP113EDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LTL-433EA is determined by the following critical parameters:

Primary Compatibility Criteria:

• Lens size: 5.00mm x 2.00mm rectangular format
• Lens transparency: Diffused
• Mounting type: Through-hole radial configuration
• Package case: Radial
• Forward voltage: 2V nominal operation
• Color: Orange (primary) or red (secondary, with wavelength consideration)

Substitution Logic:

The WP113EDT (Kingbright) is the closest direct substitute, matching the orange color, 2V forward voltage, identical lens dimensions, and diffused transparency. This part maintains full electrical and mechanical compatibility with the LTL-433EA.

The HLMP-S201 and HLMP-S201-D0000 (Broadcom Limited) are red LED alternatives with compatible mechanical form factors and through-hole mounting. These parts share the rectangular 2mmx5mm lens geometry and radial package configuration but operate at 1.9V forward voltage and feature red wavelength output (626nm dominant, 635nm peak).

The 5219499F (Dialight) is a red LED substitute with matching lens dimensions and through-hole mounting but operates at 20mA test current and 7.70mm maximum height, differing from the original specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: WP113EDT (Kingbright)

The WP113EDT is the recommended substitute for direct replacement of the LTL-433EA. This part maintains identical color (orange), forward voltage (2V), lens dimensions (5.00mm x 2.00mm), and diffused transparency. The WP113EDT is active in production status with ROHS3 compliance and unlimited moisture sensitivity rating, providing superior long-term availability and environmental compliance compared to the obsolete LTL-433EA. The 7.00mm maximum height is 1.50mm lower than the original, which may require PCB layout verification in space-constrained applications.

Secondary Substitutes: HLMP-S201 and HLMP-S201-D0000 (Broadcom Limited)

These red LED alternatives are suitable when color change from orange to red is acceptable in the application. Both parts feature active production status, ROHS3 compliance, and unlimited MSL rating. The HLMP-S201-D0000 provides specified millicandela rating (3.5mcd) for brightness-critical applications. Forward voltage is 1.9V, requiring circuit verification to confirm compatibility with existing current-limiting resistor designs. Lens dimensions are marginally larger (5.06mm x 2.11mm) and viewing angle is narrower (110° versus 140°).

Tertiary Substitute: 5219499F (Dialight)

The 5219499F is a red LED alternative with matching lens dimensions and through-hole mounting. This part is active in production with ROHS3 compliance. The 7.70mm maximum height and 20mA test current specification require circuit design review. Forward voltage is not specified, necessitating datasheet consultation before implementation.

Frequently Asked Questions (FAQ)

Q: Can the WP113EDT directly replace the LTL-433EA without circuit modification?

A: The WP113EDT shares identical forward voltage (2V) and lens dimensions with the LTL-433EA, allowing direct substitution in most applications. However, the 7.00mm maximum height versus 8.50mm original height requires verification that PCB clearance and mechanical fit are maintained. Current-limiting resistor values remain unchanged due to matching Vf specification.

Q: What is the difference between HLMP-S201 and HLMP-S201-D0000?

A: Both parts are mechanically and electrically identical. The HLMP-S201-D0000 includes a specified millicandela rating (3.5mcd), while the HLMP-S201 does not provide this parameter in the available data. For brightness-critical applications, the HLMP-S201-D0000 is preferred due to documented brightness specification.

Q: Why do the Broadcom substitutes have lower forward voltage (1.9V versus 2V)?

A: The HLMP-S201 and HLMP-S201-D0000 operate at 1.9V nominal forward voltage due to different LED chip technology and red wavelength output. Circuit designs using these parts require recalculation of current-limiting resistor values to maintain proper LED current. The 0.1V difference is significant in low-voltage applications and must be verified against circuit design margins.

Q: Are all substitute parts RoHS compliant?

A: Yes. The WP113EDT, HLMP-S201, HLMP-S201-D0000, and 5219499F are all ROHS3 compliant. The original LTL-433EA RoHS status is not specified in the available data.

Q: What is the impact of different viewing angles on application performance?

A: The LTL-433EA specifies 140° viewing angle, while WP113EDT and Broadcom substitutes specify 110°. The 30° reduction in viewing angle narrows the light distribution cone. Applications requiring wide-angle indication must evaluate whether the narrower viewing angle of substitute parts meets visibility requirements.

Q: Can red LED substitutes be used in applications designed for orange indication?

A: Red LED substitutes (HLMP-S201, HLMP-S201-D0000, 5219499F) are suitable only when the application permits color change from orange to red. Visual indication requirements, user interface standards, and regulatory compliance must be reviewed before implementing color-changed substitutes. The WP113EDT maintains orange color and is preferred when color consistency is required.

Q: What are the moisture sensitivity implications of the substitute parts?

A: The LTL-433EA specifies MSL 2A (4 weeks), while all substitute parts specify MSL 1 (unlimited). This indicates substitute parts have superior moisture resistance and longer shelf life without desiccant storage requirements. No negative impact results from this specification difference.