FY1111C-TR Yellow LED 1608 SMD Equivalent & Substitute Parts

Part Overview

The FY1111C-TR is a yellow 590nm LED indicator manufactured by Stanley Electric Co in 0603 (1608 Metric) surface mount package. This component is classified as obsolete product status. The FY1111C-TR features a diffused white lens with 65mcd brightness rating, 1.9V forward voltage, and 140° to 150° viewing angle. Due to obsolete status, equivalent and substitute parts from active manufacturers are necessary for ongoing design support and procurement continuity.

Substiute Parts

FY1111C-TR

Stanley Electric CoIn Stock: 53127FY1111C-TR Datasheet

Current PartRFQ

VFY1111C-4BY3D-TR

Stanley Electric CoIn Stock: 1025VFY1111C-4BY3D-TR Datasheet

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5975223407F

DialightIn Stock: 8175975223407F Datasheet

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APG1608SYKC/T

KingbrightIn Stock: 4260APG1608SYKC/T Datasheet

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HSMA-C191

Broadcom LimitedIn Stock: 161184HSMA-C191 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FY1111C-TR are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

• Color: Yellow (590nm dominant wavelength)
• Voltage - Forward (Vf): 1.9V nominal
• Current - Test: 20mA
• Package / Case: 0603 (1608 Metric)
• Mounting Type: Surface Mount
• Size / Dimension: 1.60mm L x 0.80mm W

Secondary Compatibility Parameters:

• Lens Transparency: Diffused (preferred for direct replacement)
• Viewing Angle: 140° minimum
• Millicandela Rating: 65mcd minimum

Substitute parts are classified into two categories:

Category A - Direct Equivalents: Parts matching all critical parameters with identical or superior secondary parameters. These include VFY1111C-4BY3D-TR (Stanley Electric Co, active status) and 5975223407F (Dialight, obsolete status).

Category B - Functional Alternatives: Parts matching critical electrical and mechanical parameters but with variations in lens properties or brightness. These include APG1608SYKC/T (Kingbright, clear lens, higher brightness) and HSMA-C191 (Broadcom Limited, amber color variant).

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: VFY1111C-4BY3D-TR (Stanley Electric Co)

The VFY1111C-4BY3D-TR is the preferred substitute for the obsolete FY1111C-TR. Both components are manufactured by Stanley Electric Co within the same 1111C series. The VFY1111C-4BY3D-TR maintains identical electrical specifications (1.9V forward voltage, 20mA test current, 590nm dominant wavelength) and mechanical compatibility (0603 package, 1.60mm x 0.80mm dimensions, 0.80mm height). The VFY1111C-4BY3D-TR offers active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. Brightness is increased to 95mcd compared to 65mcd, providing enhanced luminous intensity within the same form factor. Packaging is supplied as Tape & Reel (TR) format.

Secondary Recommendation: 5975223407F (Dialight)

The 5975223407F from Dialight provides direct electrical and optical equivalence to the FY1111C-TR. Both components feature identical 1.9V forward voltage, 20mA test current, 590nm wavelength, 65mcd brightness, and diffused white lens configuration. The 5975223407F maintains 0603 package compatibility with identical 1.60mm x 0.80mm dimensions. Height is reduced to 0.70mm (compared to 0.80mm), providing improved PCB clearance. Moisture sensitivity is improved to MSL 3 (168 Hours). However, the 5975223407F carries obsolete product status. This part is suitable for applications where exact brightness matching is required and where active product status is not a procurement constraint.

Alternative Recommendation: APG1608SYKC/T (Kingbright)

The APG1608SYKC/T from Kingbright is suitable for applications where increased brightness and clear lens transparency are acceptable. This component maintains yellow color (590nm dominant wavelength) and identical 0603 package dimensions. Forward voltage is 2.05V (compared to 1.9V), requiring circuit verification for voltage compatibility. Brightness is significantly increased to 120mcd. The clear lens provides higher light transmission compared to diffused optics. Viewing angle is reduced to 120° (compared to 140°-150°). Height is substantially reduced to 0.28mm, offering significant PCB space savings. The APG1608SYKC/T carries active product status with ROHS3 compliance and improved MSL 3 rating. This part is recommended for new designs where brightness enhancement and compact height are design objectives.

Not Recommended: HSMA-C191 (Broadcom Limited)

The HSMA-C191 from Broadcom Limited is classified as a functional alternative due to color variation. This component features amber color (592nm dominant wavelength, 595nm peak) rather than yellow. While electrical specifications (1.9V forward voltage, 20mA test current) and package dimensions (0603, 1.60mm x 0.80mm) are compatible, the amber color produces different optical appearance compared to the yellow FY1111C-TR. The HSMA-C191 is suitable only for applications where amber indication is functionally equivalent to yellow or where color substitution is explicitly approved by design requirements. This part carries active product status with superior MSL 2A rating and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q1: Can VFY1111C-4BY3D-TR directly replace FY1111C-TR without circuit modification?

A: Yes. The VFY1111C-4BY3D-TR maintains identical forward voltage (1.9V), test current (20mA), wavelength (590nm), and package dimensions (0603, 1.60mm x 0.80mm) as the FY1111C-TR. No circuit modification is required. The increased brightness (95mcd vs. 65mcd) operates within standard LED circuit tolerances and does not require current limiting adjustment.

Q2: What is the key difference between diffused and clear lens options?

A: Diffused lenses scatter light over a wider area with reduced peak intensity, suitable for general indication applications. Clear lenses concentrate light with higher peak intensity and directional output. The FY1111C-TR uses diffused white lens. The APG1608SYKC/T uses clear colorless lens, producing brighter, more directional output. Selection depends on application requirements for light distribution and visibility angle.

Q3: Why does APG1608SYKC/T have higher forward voltage (2.05V vs. 1.9V)?

A: Forward voltage variation is inherent to LED semiconductor design and manufacturing process. The 2.05V specification for APG1608SYKC/T reflects the electrical characteristics of Kingbright's yellow LED die. Circuit verification is required to confirm that the power supply and current limiting resistor accommodate the 0.15V increase. Most standard LED circuits with 5V or higher supply voltage tolerate this variation.

Q4: Is the HSMA-C191 amber LED suitable as a substitute for yellow indication?

A: The HSMA-C191 produces amber color (592nm dominant, 595nm peak) rather than yellow (590nm). While wavelength difference is minimal (2nm), visual appearance differs noticeably. Substitution is acceptable only if application requirements explicitly permit amber indication or if color distinction is not functionally critical. For applications requiring strict yellow color matching, use VFY1111C-4BY3D-TR or 5975223407F.

Q5: What is the significance of product status (Active vs. Obsolete)?

A: Active product status indicates ongoing manufacturing and long-term availability from the manufacturer. Obsolete status indicates discontinued production with limited remaining inventory. For new designs and long-term production, select active status parts (VFY1111C-4BY3D-TR, APG1608SYKC/T, HSMA-C191). For legacy system maintenance, obsolete parts (FY1111C-TR, 5975223407F) may be acceptable if inventory is available.

Q6: How does Moisture Sensitivity Level (MSL) affect component handling?

A: MSL rating specifies maximum time at specified humidity before component degradation. FY1111C-TR and VFY1111C-4BY3D-TR are MSL 4 (72 hours). 5975223407F, APG1608SYKC/T are MSL 3 (168 hours). HSMA-C191 is MSL 2A (4 weeks). Higher MSL ratings provide longer shelf life and more flexible handling. For high-volume production, MSL 3 or better is recommended to reduce bake-out requirements.

Q7: Are all substitute parts ROHS3 compliant?

A: VFY1111C-4BY3D-TR, 5975223407F, APG1608SYKC/T, and HSMA-C191 are all ROHS3 compliant. The original FY1111C-TR does not specify RoHS status. All substitute parts meet current environmental and regulatory requirements for EU and global markets.

Q8: What is the viewing angle significance for LED indicator selection?

A: Viewing angle defines the cone of light emission. FY1111C-TR specifies 140° to 150°, providing wide-angle indication suitable for general visibility. APG1608SYKC/T specifies 120°, providing narrower, more directional output. HSMA-C191 specifies 170°, providing ultra-wide-angle indication. Selection depends on application requirements for visibility from multiple angles or directional indication.

Q9: Can height difference (0.28mm to 0.80mm) affect PCB assembly?

A: Yes. Height variation affects PCB clearance, solder reflow profile, and component placement. APG1608SYKC/T (0.28mm) provides maximum clearance for low-profile applications. FY1111C-TR and VFY1111C-4BY3D-TR (0.80mm) require standard clearance. 5975223407F (0.70mm) and HSMA-C191 (0.60mm) provide intermediate heights. Verify PCB design clearance requirements before substitution.

Q10: What packaging format differences exist between substitute parts?

A: FY1111C-TR is supplied as Tape & Reel (TR). VFY1111C-4BY3D-TR is supplied as Tape & Reel (TR). 5975223407F is supplied as Cut Tape (CT). APG1608SYKC/T and HSMA-C191 are supplied as Chip LED format. Packaging affects handling, storage, and pick-and-place equipment compatibility. Verify assembly equipment compatibility with selected packaging format.