LED COB LUXEON LHC1-2780-1204 Equivalent & Substitute Parts

Part Overview

The LHC1-2780-1204 is a Chip On Board (COB) LED module from Lumileds' LUXEON CoB series, designed for warm white lighting applications at 2700K color temperature. This component delivers 1700 lumens at 450mA test current with a square configuration and flat lens. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

LHC1-2780-1204

LumiledsIn Stock: 964LHC1-2780-1204 Datasheet

Current PartRFQ

L2C5-27801204E1300

LumiledsIn Stock: 1001L2C5-27801204E1300 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part L2C5-27801204E1300 qualifies as a functional equivalent based on the following critical parameters:

Matching Parameters:

• Color temperature: 2700K 3-Step MacAdam Ellipse (identical warm white specification)
• Color: White, Warm (identical)
• Type: Chip On Board (COB) (same technology platform)
• Lens Type: Flat (identical optical configuration)
• Light Emitting Surface: 13.00mm Dia (identical)
• Height: 1.50mm (identical mechanical profile)
• Current - Test: 450mA (identical test condition)
• Temperature - Test: 85°C (identical test condition)
• CRI: 80 (identical color rendering)
• RoHS Status: ROHS3 Compliant (identical compliance)
• MSL: 1 (Unlimited) (identical moisture sensitivity)
• REACH Status: REACH Unaffected (identical regulatory status)

Differences:

• Configuration: Square (LHC1) vs. Rectangle (L2C5)
• Luminous Flux: 1700 lm vs. 2152 lm at test conditions
• Forward Voltage: 35.5V vs. 34.8V
• Lumens/Watt: 106 lm/W vs. 137 lm/W
• Viewing Angle: 125° vs. 115°
• Size: 24.00mm L x 20.00mm W vs. 20.00mm L x 24.00mm W
• Series: LUXEON CoB vs. LUXEON CoB Core Range Gen 3
• Product Status: Obsolete vs. Active

Parameter Comparison

Engineering Selection Recommendations

The L2C5-27801204E1300 is the designated substitute for the obsolete LHC1-2780-1204. Both components share identical electrical test conditions (450mA, 85°C), color temperature specification (2700K), and regulatory compliance (ROHS3, REACH Unaffected). The substitute represents an active product from Lumileds' current LUXEON CoB Core Range Gen 3 series, ensuring ongoing availability and manufacturing support.

The primary design consideration is the configuration change from square to rectangle, which affects footprint dimensions. The substitute delivers higher luminous flux (2152 lm vs. 1700 lm) and improved efficiency (137 lm/W vs. 106 lm/W) at identical test current, with marginally lower forward voltage (34.8V vs. 35.5V) and slightly reduced viewing angle (115° vs. 125°). These performance improvements are consistent with generational advancement in the LUXEON CoB product line.

Frequently Asked Questions (FAQ)

Q: Can L2C5-27801204E1300 directly replace LHC1-2780-1204 in existing designs?

A: Substitution is possible with design review. Both components share identical electrical test conditions, color temperature, CRI, and regulatory compliance. The primary consideration is the configuration change from square to rectangle, which affects PCB footprint and mechanical mounting. Forward voltage difference (0.7V) is negligible for most driver circuits.

Q: What is the significance of the configuration change from square to rectangle?

A: Configuration refers to the physical shape of the light-emitting surface arrangement. The square configuration (LHC1) measures 24.00mm L x 20.00mm W, while the rectangle configuration (L2C5) measures 20.00mm L x 24.00mm W. This affects PCB layout, thermal management design, and optical system integration. Mechanical compatibility must be verified against your specific application requirements.

Q: Why does the substitute deliver higher luminous flux at the same test current?

A: The L2C5-27801204E1300 represents a newer generation (LUXEON CoB Core Range Gen 3) with improved LED die efficiency and packaging technology. Higher flux output (2152 lm vs. 1700 lm) at identical 450mA test current reflects generational advancement in the LUXEON CoB platform.

Q: Are there compliance or regulatory differences between these parts?

A: No. Both components are ROHS3 Compliant, REACH Unaffected, and share identical Moisture Sensitivity Level (MSL 1 - Unlimited). Regulatory status is equivalent for both parts.

Q: What is the impact of the 0.7V forward voltage difference?

A: The substitute has lower forward voltage (34.8V vs. 35.5V). This represents a 0.7V reduction, which is within typical driver circuit tolerance and may result in slightly lower power dissipation. Driver circuit verification is recommended for precision applications.

Q: How does the viewing angle difference affect application suitability?

A: The substitute has a slightly narrower viewing angle (115° vs. 125°). This means light distribution is more concentrated. For applications requiring wide-angle illumination, this difference should be evaluated against specific optical design requirements.

Q: Is the substitute available in the same packaging?

A: The main part LHC1-2780-1204 packaging is listed as "-" (not specified). The substitute L2C5-27801204E1300 is supplied in Tube packaging. Packaging format should be confirmed against your procurement and assembly requirements.