LED COOL WHITE 5000K 2PLCC EACL2835WC43 Equivalent & Substitute Parts

Part Overview

The EACL2835WC43 is a cool white LED lighting component manufactured by Everlight Electronics Co Ltd, designed for surface mount applications in 2-SMD, flat lead packaging. This component operates at 5000K color temperature with a forward voltage of 3.25V and 60mA test current, delivering 27 lumens at 25°C. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

EACL2835WC43

Everlight Electronics Co LtdIn Stock: 875EACL2835WC43 Datasheet

Current PartRFQ

LTW-K140SZR50

Lite-On Inc.In Stock: 991LTW-K140SZR50 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete EACL2835WC43 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Color Temperature: 5000K (cool white)
• Package Configuration: 2-SMD, flat lead surface mount
• Viewing Angle: 120°
• Test Current: 60mA nominal operation
• Forward Voltage Range: Compatible with 3.2V to 3.25V
• Mounting Type: Surface mount

Secondary Compatibility Factors:

• Maximum current rating must accommodate 75mA or higher
• Moisture sensitivity level: MSL 3 or better
• Physical dimensions must fit existing PCB footprints designed for 2-PLCC packages

The LTW-K140SZR50 from Lite-On Inc. meets these substitution criteria through matching color temperature, package type, viewing angle, test current, and mounting configuration.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: LTW-K140SZR50

The LTW-K140SZR50 from Lite-On Inc. is the qualified substitute for the obsolete EACL2835WC43. Selection is based on the following engineering factors:

Product Status: The LTW-K140SZR50 maintains active product status with confirmed inventory availability (941 pcs), ensuring supply chain continuity for production and design updates.

Electrical Compatibility: Both components operate at identical test current (60mA) and matching color temperature (5000K). Forward voltage differential of 0.05V (3.25V vs 3.2V) is within standard circuit design tolerance for LED applications. Maximum current rating of 80mA on the substitute exceeds the original 75mA specification, providing operational margin.

Mechanical Compatibility: Both components utilize 2-SMD flat lead surface mount packaging with 120° viewing angle. The substitute features a smaller footprint (2.70 x 2.80mm vs 3.50 x 2.80mm), which may require PCB layout verification but does not preclude substitution. Height specifications are compatible (0.90mm vs 0.85mm).

Thermal Performance: The LTW-K140SZR50 provides superior thermal resistance (30°C/W vs 50°C/W), resulting in improved thermal management in the application.

Compliance: Both components carry MSL 3 rating (168 hours) and EAR99 ECCN classification. The substitute is RoHS3 compliant.

Performance Trade-offs: The substitute exhibits lower luminous efficacy (120 lm/W vs 138 lm/W) and reduced color rendering index (CRI 80 vs CRI 90). These parameters must be evaluated against application-specific requirements for color accuracy and brightness performance.

Frequently Asked Questions (FAQ)

Q: Can the LTW-K140SZR50 be used as a direct replacement for the EACL2835WC43 without circuit modification?

A: The LTW-K140SZR50 is electrically compatible with minimal circuit adjustment. The forward voltage difference of 0.05V is within standard LED circuit design tolerance. However, PCB layout verification is required due to the smaller footprint (2.70 x 1.40mm vs 3.50 x 2.80mm). Existing solder pads may require adjustment to accommodate the substitute component dimensions.

Q: What are the key differences in performance between these two components?

A: The primary performance differences are luminous efficacy (138 lm/W vs 120 lm/W) and color rendering index (CRI 90 vs CRI 80). The substitute delivers approximately 4 lumens less at 25°C test conditions (23 lm vs 27 lm). Applications requiring high color accuracy should evaluate the CRI reduction. The substitute provides superior thermal characteristics (30°C/W vs 50°C/W).

Q: Are both components suitable for the same moisture sensitivity handling procedures?

A: Yes. Both components carry identical MSL 3 rating with 168-hour floor life. Storage, handling, and reflow procedures specified for MSL 3 components apply equally to both the EACL2835WC43 and LTW-K140SZR50.

Q: What is the impact of the smaller footprint on PCB design?

A: The LTW-K140SZR50 footprint (2.70 x 1.40mm) is smaller than the original EACL2835WC43 (3.50 x 2.80mm). Existing PCB designs with solder pads sized for the larger component may require modification. The substitute can be accommodated on the same PCB with pad adjustment or may allow for improved board layout density. Height compatibility (0.90mm vs 0.85mm) is not a limiting factor.

Q: Is the LTW-K140SZR50 available in the same packaging format?

A: The LTW-K140SZR50 is supplied in Tape & Reel (TR) format, whereas the original component packaging is not specified in available data. Both components use identical 2-SMD, flat lead package configuration suitable for automated assembly processes.

Q: What is the maximum current rating difference, and does it affect circuit design?

A: The LTW-K140SZR50 maximum current rating is 80mA compared to 75mA for the EACL2835WC43. This 5mA increase provides additional operational margin and does not require circuit modification. Existing current-limiting designs for 60mA test current operation remain valid.