LED Circuit Board Indicator 5681F3;3; Equivalent & Substitute Parts

Part Overview

The 5681F3;3; is a LED Circuit Board Indicator manufactured by Visual Communications Company (VCC), classified as a 3mm bi-level amber indicator with right-angle through-hole mounting. This component is designed for circuit board applications requiring dual-level amber indication at 2V and 30mA operating parameters.

The 5681F3;3; carries an Obsolete product status. Locating functionally equivalent substitute components is necessary to support ongoing maintenance, repair, and redesign requirements for legacy systems utilizing this indicator.

Substiute Parts

5681F3;3

Visual Communications Company - VCCIn Stock: 9685681F3;3 Datasheet

Current PartRFQ

5520277F

DialightIn Stock: 8995520277F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5681F3;3; is evaluated based on the following critical parameters that define functional equivalence for LED Circuit Board Indicator applications:

Configuration Match: Both the main part and substitute must maintain the same 2 High dual-level configuration to preserve circuit board layout and signal indication functionality.

Mounting Type Compatibility: Right-angle through-hole mounting is required to maintain mechanical fit within existing PCB designs.

Optical Characteristics: Peak wavelength, color family, lens type, and millicandela rating determine visual indication performance and user perception.

Electrical Parameters: Voltage rating and current consumption must be compatible with existing circuit designs to prevent component damage or circuit malfunction.

Compliance Standards: RoHS3 compliance and MSL rating ensure regulatory adherence and reliability in storage and assembly environments.

The substitute part 5520277F from Dialight meets these substitution criteria with the following considerations: different lens size (5mm vs. 3mm), different voltage rating (1.9V vs. 2V), different current consumption (10mA vs. 30mA), and different color specification (orange vs. amber).

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The 5681F3;3; is classified as Obsolete, making the Active status of 5520277F significant for long-term supply chain continuity and component availability.

Compliance Alignment: Both components maintain ROHS3 compliance and identical MSL ratings, ensuring regulatory and environmental compatibility with modern manufacturing and assembly processes.

Mechanical Integration: The 5520277F features a larger lens size (5mm vs. 3mm) and different mounting footprint (T-1 3/4 vs. T-1). PCB layout modifications are required to accommodate this substitute.

Electrical Parameter Differences: The 5520277F operates at 1.9V with 10mA current consumption, compared to the 5681F3;3; at 2V with 30mA. Circuit redesign is necessary to adjust voltage supply and current-limiting resistor values.

Optical Characteristics: Peak wavelength difference (600nm vs. 603nm) and color specification change (orange vs. amber) result in perceptible visual differences in indication appearance.

Frequently Asked Questions (FAQ)

Q: Can the 5520277F directly replace the 5681F3;3; without circuit modifications?

A: No. The 5520277F requires circuit redesign due to different voltage rating (1.9V vs. 2V), current consumption (10mA vs. 30mA), and lens size (5mm vs. 3mm). PCB layout changes are necessary to accommodate the larger lens diameter.

Q: What is the significance of the 2 High configuration in both parts?

A: The 2 High configuration indicates a dual-level LED indicator structure. Both the main part and substitute maintain this configuration, preserving the functional indication capability for dual-state signaling applications.

Q: How do the wavelength specifications affect substitution?

A: The 5681F3;3; operates at 603nm (amber) while the 5520277F operates at 600nm (orange). Although wavelengths are similar, the color perception differs. The orange indication of the substitute may not match the original amber specification in visual appearance.

Q: Are there compliance concerns with using the 5520277F as a substitute?

A: Both components are ROHS3 compliant with identical MSL ratings. No compliance barriers exist for regulatory or environmental standards. However, circuit-level electrical parameters must be verified for the specific application.

Q: What is the impact of the different current ratings on circuit design?

A: The 5681F3;3; requires 30mA while the 5520277F requires 10mA. Current-limiting resistor values must be recalculated for the substitute to prevent component damage and ensure proper brightness levels.

Q: Does the viewing angle specification affect substitution decisions?

A: The 5520277F specifies a 60° viewing angle while the 5681F3;3; does not provide this specification. The 60° viewing angle of the substitute may differ from the original part's optical characteristics, affecting visibility in specific mounting orientations.