LTL-633-1 Equivalent & Substitute Parts

Part Overview

The LTL-633-1 is a 5mm through-hole LED circuit board indicator manufactured by Lite-On Inc., featuring a green diffused lens with domed top. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part delivers 40 millicandela brightness at 30mA forward current with a 2.1V voltage rating and 60° viewing angle, suitable for standard indicator applications in electronic assemblies.

Substiute Parts

LTL-633-1

Lite-On Inc.In Stock: 1157LTL-633-1 Datasheet

Current PartRFQ

LTL-10233WHC

Lite-On Inc.In Stock: 1057LTL-10233WHC Datasheet

DirectRFQ

LTL-533-11

Lite-On Inc.In Stock: 15755LTL-533-11 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTL-633-1 are qualified based on matching the following critical electrical and mechanical parameters:

• Color: Green (565nm peak wavelength)
• Current Rating: 30mA
• Voltage Rating: 2.1V
• Millicandela Rating: 40mcd
• Viewing Angle: 60°
• Lens Type: Diffused, Tinted
• Configuration: Single
• Mounting Type: Through Hole

Two substitute parts meet these criteria with variations in lens size and mounting configuration. The LTL-10233WHC maintains identical 5mm lens dimensions and standard through-hole mounting. The LTL-533-11 uses a 4.80mm lens diameter with right-angle mounting, introducing a mechanical form factor change while preserving all electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

LTL-10233WHC is the direct electrical and mechanical equivalent for applications requiring a drop-in replacement. This part maintains identical lens dimensions (5mm, T-1 3/4) and standard through-hole mounting orientation. The LTL-10233WHC carries active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

LTL-533-11 is the manufacturer-recommended substitute when mechanical form factor changes are acceptable. This part features a 4.80mm lens diameter and right-angle mounting configuration, requiring PCB layout modifications. The LTL-533-11 offers superior moisture sensitivity performance (MSL 1 vs. 2A) and REACH compliance documentation, with significantly higher inventory availability (15,708 units). This option is suitable for new designs or redesigns where the right-angle mounting provides mechanical advantages.

Frequently Asked Questions (FAQ)

Q: Can LTL-10233WHC replace LTL-633-1 without PCB modifications?

A: Yes. The LTL-10233WHC maintains identical electrical specifications and mechanical dimensions (5mm lens, standard through-hole mounting), enabling direct substitution without circuit board layout changes.

Q: What is the primary difference between LTL-10233WHC and LTL-533-11?

A: The LTL-10233WHC uses standard vertical through-hole mounting with a 5mm lens. The LTL-533-11 uses right-angle mounting with a 4.80mm lens diameter. Both deliver identical electrical performance (30mA, 40mcd, 565nm green). The LTL-533-11 requires PCB footprint redesign but offers improved moisture sensitivity (MSL 1 vs. 2A).

Q: Are all substitute parts RoHS compliant?

A: Yes. Both LTL-10233WHC and LTL-533-11 carry ROHS3 compliance certification. The original LTL-633-1 does not specify RoHS status due to its obsolete classification.

Q: Which substitute part should be selected for new designs?

A: For new designs, LTL-533-11 is the manufacturer-recommended choice, offering active product status, superior moisture sensitivity performance, and higher inventory availability. For existing designs requiring minimal modification, LTL-10233WHC provides direct compatibility.

Q: What is the impact of the 4.80mm lens size on optical performance?

A: The LTL-533-11 maintains identical electrical brightness (40mcd) and viewing angle (60°) despite the 0.20mm reduction in lens diameter. Optical performance remains equivalent for indicator applications.

Q: Are there packaging differences between substitute parts?

A: The LTL-10233WHC packaging is not specified in available documentation. The LTL-533-11 is supplied in bulk packaging. Confirm packaging requirements with the supplier for procurement planning.