3UWC8.035W-F

Part Overview

The 3UWC8.035W-F is a warm white LED indicator manufactured by Bivar Inc., designed for through-hole mounting in discrete electronic applications. This component is classified as Obsolete, necessitating identification of functionally equivalent alternatives for continued system support and new designs requiring similar performance characteristics.

Substiute Parts

3UWC8.035W-F

Bivar Inc.In Stock: 10753UWC8.035W-F Datasheet

Current PartRFQ

5218268F

DialightIn Stock: 57575218268F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 5218268F from Dialight has been identified as a functional equivalent to the 3UWC8.035W-F based on the following parameters:

• Lens Size: Both use 3mm T-1 form factor, ensuring mechanical compatibility with existing PCB layouts and panel cutouts
• Mounting Type: Both employ through-hole radial configuration, maintaining assembly process compatibility
• Lens Color & Transparency: Both feature colorless, clear lens designs
• Color Category: Both are white LED indicators, suitable for identical signaling applications
• Electrical Operating Point: Both operate at nominal 20mA test current, within acceptable forward voltage tolerance
• Package Classification: Both use radial through-hole packages compatible with standard PCB footprints
• Moisture Sensitivity: Both classified as MSL 1 (Unlimited), indicating identical environmental reliability

The 5218268F substitute differs from the original part in forward voltage (3.3V vs. 3.4V), brightness rating (9300mcd vs. 8000mcd), viewing angle (25° vs. 35°), and physical height (6.56mm vs. 5.30mm). These variations remain within acceptable substitution parameters for general indication applications where exact performance matching is not critical.

Parameter Comparison

Engineering Selection Recommendations

The 5218268F is a direct substitute for obsolete designs using the 3UWC8.035W-F. The substitute is manufactured by Dialight, an active supplier with current inventory, and is classified as Active product status, eliminating supply chain risk.

Both parts share identical export classifications (EAR99) and harmonized tariff codes (8541.41.0000), ensuring regulatory compliance is maintained. Both parts meet MSL 1 moisture sensitivity requirements, guaranteeing equivalent environmental reliability in standard industrial and consumer applications.

For new designs, the 5218268F is recommended as the primary choice due to its active manufacturing status and higher brightness rating (9300mcd), which provides design margin in indication applications. The slightly reduced viewing angle (25° versus 35°) and increased forward voltage drop (3.3V versus 3.4V) must be verified against specific circuit design requirements, particularly in applications with strict current budget or angle-dependent visibility constraints.

Frequently Asked Questions (FAQ)

Q: Can the 5218268F directly replace the 3UWC8.035W-F in existing designs? A: Yes, from a mechanical and electrical standpoint. Both parts use identical 3mm T-1 through-hole radial packages, matching PCB footprints and assembly processes. The forward voltage difference (0.1V) is within typical LED tolerance and power supply regulation margins. Verify the specific application does not depend critically on the original part's 35° viewing angle, as the substitute provides 25°.

Q: What is the significance of the different color descriptions (Warm White vs. White)? A: The 3UWC8.035W-F specifies warm white at 3100K dominant wavelength, while the 5218268F lists only white without wavelength specification. This indicates the substitute may produce neutral white light rather than warm white. In applications where color temperature is critical for user perception or system compliance, this difference requires evaluation.

Q: How do the brightness ratings compare? A: The 5218268F provides 9300mcd compared to the original 8000mcd at identical 20mA test current. This 16% brightness increase means the substitute will appear noticeably brighter. In dimly lit applications where visibility is marginal, this benefits visibility. In applications with strict brightness standardization, circuit current limiting may require adjustment.

Q: Are there any height constraints to consider? A: The 5218268F is 1.26mm taller (6.56mm vs. 5.30mm). Verify this height difference against application space constraints, particularly in low-profile panel designs or where LED leads are mechanically constrained.

Q: Why is the original part obsolete? A: Bivar Inc. has discontinued the 3UWC8.035W-F. The 5218268F from Dialight provides equivalent functionality with active manufacturing status, ensuring long-term availability and supply chain stability.