LTL-40CHJ Equivalent & Substitute Parts

Part Overview

The LTL-40CHJ is an active, through-hole mounted dual-color LED indicator manufactured by Lite-On Inc. It combines green and red LED elements in a single rectangular diffused lens package, designed for visual indication applications requiring dual-color status signaling. This part is in active production status with 929 units in current inventory. Substitute parts are identified to provide design flexibility, supply chain alternatives, and equivalent functional performance for applications where the original part may be unavailable or where alternative sourcing is required.

Substiute Parts

LTL-40CHJ

Lite-On Inc.In Stock: 968LTL-40CHJ Datasheet

Current PartRFQ

5219743F

DialightIn Stock: 8485219743F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTL-40CHJ are identified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitutability:

Critical Matching Parameters:

• Dual-color configuration (Green and Red)
• Forward voltage range: 2.1V Green, 2.0V–2.1V Red
• Test current: 20mA for both colors
• Millicandela rating: 5.6mcd for both colors
• Dominant wavelengths: 569nm Green, 621nm Red
• Viewing angle: 140°
• Through-hole radial mounting
• Rectangular diffused lens with flat top
• Lens dimensions: approximately 4.00mm x 2.00mm
• Maximum height: approximately 7.00mm
• RoHS3 compliance
• MSL Level 1

The substitute part 5219743F from Dialight meets all critical electrical parameters and mechanical form factors within specified tolerances, enabling direct functional replacement in applications requiring dual-color LED indication.

Parameter Comparison

Engineering Selection Recommendations

Both the LTL-40CHJ and 5219743F are active production parts with ROHS3 compliance and MSL Level 1 rating, suitable for standard PCB assembly processes without moisture bake-out requirements. Selection between these parts should be based on:

Availability and Lead Time: Choose based on current inventory status and supplier delivery schedules. The LTL-40CHJ has 929 units in stock; the 5219743F has 793 units available.

Mechanical Fit: Both parts feature equivalent rectangular diffused lens geometry with flat-top styling. Lens dimensions are within manufacturing tolerance (LTL-40CHJ: 4.00mm x 2.00mm; 5219743F: 3.99mm x 2.03mm). Maximum heights are equivalent (7.00mm vs. 7.01mm).

Electrical Performance: Forward voltage for the red element differs by 0.1V (LTL-40CHJ: 2.1V; 5219743F: 2.0V). Both operate at 20mA test current with identical millicandela ratings and wavelength specifications. Circuit designs accommodating ±0.1V forward voltage variation will experience no functional difference.

Regulatory Compliance: Both parts meet ROHS3 requirements and carry EAR99 ECCN classification with identical HTSUS codes (8541.41.0000), enabling unrestricted substitution in compliant applications.

Frequently Asked Questions (FAQ)

Q: Can the 5219743F directly replace the LTL-40CHJ in existing designs?

A: Yes. Both parts meet equivalent electrical specifications (20mA test current, 5.6mcd brightness, 140° viewing angle, identical wavelengths) and mechanical form factors (through-hole radial mounting, rectangular diffused lens, 7.00mm height). The 0.1V difference in red forward voltage is within typical circuit design tolerances.

Q: Are there any PCB layout considerations when substituting these parts?

A: No. Both parts use identical through-hole radial mounting with equivalent lead spacing and height. PCB footprints and assembly processes require no modification.

Q: Do both parts require moisture bake-out before soldering?

A: No. Both parts carry MSL Level 1 (Unlimited) rating, indicating no moisture sensitivity. Standard PCB assembly processes apply without special moisture control requirements.

Q: What is the difference in lens dimensions between these parts?

A: The LTL-40CHJ lens measures 4.00mm x 2.00mm; the 5219743F measures 3.99mm x 2.03mm. These dimensions are within standard manufacturing tolerance for rectangular LED lenses and produce no visible or functional difference in typical applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the LTL-40CHJ and 5219743F are ROHS3 compliant, meeting all current environmental and hazardous substance restrictions for electronic components.

Q: Which part should I select for new designs?

A: Selection should be based on current availability, supplier lead times, and cost. Both parts are active production items with equivalent performance. Consult current inventory and pricing from authorized distributors.