LTL-433HR Equivalent & Substitute Parts

Part Overview

The LTL-433HR is an active status red diffused LED indicator manufactured by Lite-On Inc., designed for through-hole mounting applications. This rectangular 5.00mm x 2.00mm lens component operates at 2V forward voltage with a 3.7mcd brightness rating and 140° viewing angle. The part is ROHS3 compliant and currently in active production status with 853 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the allowed parameter tolerances for red LED indicators in this form factor.

Substiute Parts

LTL-433HR

Lite-On Inc.In Stock: 948LTL-433HR Datasheet

Current PartRFQ

HLMP-S201

Broadcom LimitedIn Stock: 21348HLMP-S201 Datasheet

MFR RecommendedRFQ

WP113IDT

KingbrightIn Stock: 845WP113IDT Datasheet

MFR RecommendedRFQ

XSUR18D

SunLEDIn Stock: 12671XSUR18D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTL-433HR are qualified based on the following electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Color: Red
• Lens Transparency: Diffused
• Mounting Type: Through Hole
• Package / Case: Radial
• Wavelength - Dominant: Red spectrum (617nm–626nm acceptable)
• Voltage - Forward (Vf) Typical: 1.9V–2V range
• Current - Test: 10mA–20mA range

Mechanical Compatibility Criteria:

• Lens Style: Rectangle with Flat Top
• Lens Size: 5.00mm x 2.00mm (±0.06mm tolerance)
• Height (Max): 7.00mm–8.00mm range

Compliance Criteria:

• RoHS Status: ROHS3 Compliant
• Product Status: Active

All three substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the LTL-433HR in standard through-hole PCB applications.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are ROHS3 compliant and maintain active production status, meeting regulatory and supply chain requirements equivalent to the LTL-433HR.

HLMP-S201 (Broadcom Limited): Forward voltage is 1.9V with test current of 20mA. Lens dimensions are 5.06mm x 2.11mm, representing a 1.2% increase in both width and height. Maximum height is 8.00mm. Wavelength-dominant specification is 626nm, within the red spectrum range. This part is suitable for applications where the slightly higher test current and marginally larger lens dimensions do not present mechanical constraints.

WP113IDT (Kingbright): Forward voltage matches the LTL-433HR at 2V with test current of 20mA. Lens dimensions and height are identical at 5.00mm x 2.00mm and 7.00mm respectively. Wavelength-dominant specification is 617nm. Millicandela rating is 4mcd, slightly higher than the LTL-433HR. This part provides the closest electrical and mechanical match.

XSUR18D (SunLED): Forward voltage is 1.9V with test current of 10mA, matching the LTL-433HR test current specification. Lens dimensions and height are identical at 5.00mm x 2.00mm and 7.00mm respectively. Wavelength-dominant specification is 617nm. Millicandela rating is 4mcd. This part maintains identical test current and mechanical dimensions.

Frequently Asked Questions (FAQ)

Q: Can the HLMP-S201 be used as a direct replacement for the LTL-433HR?

A: Yes. The HLMP-S201 meets all electrical and mechanical compatibility criteria. The lens dimensions differ by approximately 1.2% (5.06mm x 2.11mm versus 5.00mm x 2.00mm), which remains within acceptable tolerances for through-hole PCB mounting. The forward voltage of 1.9V is within the acceptable range for red LED indicator circuits. The higher test current of 20mA versus 10mA requires verification that the circuit design supports this specification.

Q: What is the primary difference between the WP113IDT and XSUR18D?

A: Both parts share identical lens dimensions (5.00mm x 2.00mm) and height (7.00mm). The key difference is test current: WP113IDT operates at 20mA while XSUR18D operates at 10mA. Both have forward voltage specifications of 2V and 1.9V respectively. Selection depends on circuit current requirements and design specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The LTL-433HR and all three substitute parts (HLMP-S201, WP113IDT, XSUR18D) are ROHS3 compliant and suitable for applications requiring regulatory compliance.

Q: Does the viewing angle difference affect substitution?

A: The LTL-433HR has a 140° viewing angle, while all substitute parts have 110° viewing angles. This represents a 21% reduction in viewing angle. Substitution is valid only if the application does not require the wider 140° viewing angle specification. For applications requiring wide-angle indication, the LTL-433HR should be retained.

Q: What is the inventory status of substitute parts?

A: HLMP-S201 has 21,257 units in stock, XSUR18D has 12,605 units in stock, and WP113IDT has 823 units in stock. All parts are available as new original components.