SCP8TT78HPL1TLS06E LED Equivalent & Substitute Parts

Part Overview

The SCP8TT78HPL1TLS06E is a Samsung Semiconductor neutral white LED (4000K) designed for surface mount applications in the 0505 (1313 Metric) package format. This component delivers 57lm at 85°C with a forward voltage of 2.9V and operates at 150mA nominal current. The product is classified as obsolete, necessitating identification of active equivalent components for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility across lighting performance, electrical characteristics, and thermal properties while accommodating available packaging options.

Substiute Parts

SCP8TT78HPL1TLS06E

Samsung Semiconductor, Inc.In Stock: 1153SCP8TT78HPL1TLS06E Datasheet

Current PartRFQ

SCP7TT78HEL1TLS06E

Samsung Semiconductor, Inc.In Stock: 34294SCP7TT78HEL1TLS06E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCP8TT78HPL1TLS06E is determined by the following critical parameters:

Color and CCT Matching: Both the main part and substitute must maintain neutral white (4000K) color specification with 5-Step MacAdam Ellipse tolerance to ensure consistent color appearance in lighting applications.

Electrical Compatibility: Forward voltage (Vf), test current, and maximum current ratings must be compatible with existing circuit designs. Variations in these parameters may require driver circuit modifications.

Luminous Flux Performance: The substitute part must deliver comparable light output at the specified test current and temperature conditions to maintain system brightness requirements.

Thermal Characteristics: Thermal resistance of the package (2°C/W) is a fixed parameter for this product category and remains consistent across substitutes.

Compliance and Packaging: RoHS compliance status and moisture sensitivity level must be verified. Package format changes (0505 to 0606) require PCB layout modifications but do not affect electrical functionality.

Product Status: Active product status of the substitute ensures ongoing availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement in Existing Designs:

The SCP7TT78HEL1TLS06E serves as a functional substitute for the obsolete SCP8TT78HPL1TLS06E when the following conditions are met:

1. Color and CCT Requirements: Both parts maintain 4000K neutral white specification with identical MacAdam Ellipse tolerance, ensuring color consistency in lighting applications.

2. Electrical Circuit Compatibility: The forward voltage difference of 0.1V (2.9V vs. 2.8V) falls within standard LED tolerance ranges and does not require driver circuit redesign in most applications. However, circuits with tight voltage regulation should be evaluated.

3. Current Operating Point: The substitute operates at a lower test current (65mA vs. 150mA). Applications requiring the original 150mA operating point must verify that the substitute can be driven at this current within its 350mA maximum rating. The higher efficiency (203 lm/W vs. 131 lm/W) of the substitute indicates improved performance at lower currents.

4. Luminous Output: Direct flux comparison is limited due to different test conditions (85°C for main part, 25°C for substitute). System designers must evaluate whether the substitute's 37lm output at 25°C and 65mA meets application brightness requirements.

5. Optical Characteristics: The substitute has a narrower viewing angle (120° vs. 150°). Applications requiring wide-angle light distribution should assess whether this reduction impacts system performance.

6. Package Transition: The package change from 0505 to 0606 requires PCB layout modification. The substitute's larger footprint (1.70mm x 1.70mm vs. 1.18mm x 1.18mm) necessitates verification of available PCB space and component placement clearances.

7. Compliance Status: The substitute's ROHS3 compliance and active product status ensure regulatory alignment and long-term supply availability, addressing the obsolescence of the main part.

For New Designs:

The SCP7TT78HEL1TLS06E is the recommended choice due to active product status, improved efficiency, and current compliance certifications.

Frequently Asked Questions (FAQ)

Q1: Can the SCP7TT78HEL1TLS06E be used as a direct drop-in replacement for the SCP8TT78HPL1TLS06E?

A: No. While both parts share the same color (neutral white 4000K) and thermal characteristics, the package size differs (0505 vs. 0606). PCB layout modification is required. Additionally, the substitute operates at a lower test current (65mA vs. 150mA), requiring verification that the application can function at this operating point.

Q2: What are the key differences in electrical performance between these two parts?

A: The main differences are: (1) Forward voltage: 2.9V (main) vs. 2.8V (substitute)—a 0.1V difference within typical tolerance; (2) Test current: 150mA (main) vs. 65mA (substitute); (3) Maximum current: 450mA (main) vs. 350mA (substitute); (4) Efficiency: 131 lm/W (main) vs. 203 lm/W (substitute). The substitute demonstrates higher efficiency at lower current levels.

Q3: Will the narrower viewing angle (120° vs. 150°) affect my application?

A: This depends on your lighting system design. If your application requires wide-angle light distribution across 150°, the substitute's 120° viewing angle may reduce coverage. Evaluate your optical design requirements and test the substitute in your specific application context.

Q4: How do I handle the package size change from 0505 to 0606?

A: The substitute requires a larger PCB footprint (1.70mm x 1.70mm vs. 1.18mm x 1.18mm). Verify that your PCB layout has sufficient space for the larger component. Consult your PCB design files and component placement guidelines to confirm compatibility.

Q5: Are there any compliance or supply chain advantages to using the substitute?

A: Yes. The SCP7TT78HEL1TLS06E is an active product with ROHS3 compliance, ensuring ongoing availability and regulatory alignment. The main part (SCP8TT78HPL1TLS06E) is obsolete, making the substitute the only viable long-term solution for production continuity.

Q6: Can I operate the substitute at the original 150mA current level?

A: The substitute's maximum current rating is 350mA, so 150mA operation is within specification. However, the substitute's test current is 65mA, and its efficiency characteristics are optimized for lower current operation. Verify that 150mA operation meets your brightness and thermal requirements through testing.

Q7: What is the impact of the CRI difference (80 vs. 70)?

A: The main part has a higher Color Rendering Index (CRI 80), indicating superior color accuracy. The substitute (CRI 70) is acceptable for general lighting applications but may show slightly reduced color fidelity in color-critical applications. Evaluate your application's color accuracy requirements.

Q8: Are the thermal characteristics identical between the two parts?

A: Yes. Both parts have a thermal resistance of 2°C/W and identical moisture sensitivity level (2A, 4 Weeks). Thermal management considerations remain the same.