Equivalent & Substitute Parts for HSMY-C660

Part Overview

The HSMY-C660 is a yellow LED indication component manufactured by Broadcom Limited, featuring a 586nm dominant wavelength and 2.1V forward voltage in a 2-SMD, No Lead surface mount right-angle package. This part is classified as obsolete, making identification of suitable equivalent and substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

HSMY-C660

Broadcom LimitedIn Stock: 913HSMY-C660 Datasheet

Current PartRFQ

HSMY-C680

Broadcom LimitedIn Stock: 6908HSMY-C680 Datasheet

DirectRFQ

QTLP610C3TR

onsemiIn Stock: 1229QTLP610C3TR Datasheet

MFR RecommendedRFQ

SML-LXR851YC-TR

Lumex Opto/Components Inc.In Stock: 676SML-LXR851YC-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HSMY-C660 is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Color: Yellow
• Package / Case: 2-SMD, No Lead
• Mounting Type: Surface Mount, Right Angle
• Lens Size: 2.00mm x 1.00mm
• Height (Max): 1.00mm
• Voltage - Forward (Vf) (Typ): 2.1V ±0.1V tolerance
• Current - Test: 20mA

Allowable Variation Parameters:

• Wavelength - Dominant: 586nm to 590nm range
• Millicandela Rating: 5mcd to 9.3mcd range
• Viewing Angle: 120° to 160° range

The three identified substitute parts meet these criteria with minor variations in brightness output and viewing angle characteristics, while maintaining electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

HSMY-C680 (Direct Broadcom Substitute): This part is the primary substitute, manufactured by the same supplier as the main component. It maintains identical electrical specifications (2.1V forward voltage, 20mA test current) and package geometry. The HSMY-C680 offers higher brightness (9.3mcd versus 5mcd) and is currently in active production status with ROHS3 compliance. The reduced viewing angle (125° versus 155°) and increased moisture sensitivity level (2A versus 1) are the primary design considerations for this substitution.

QTLP610C3TR (onsemi Alternative): This part provides cross-manufacturer compatibility with slightly reduced forward voltage (2V versus 2.1V) and increased height (1.10mm versus 1.00mm). Product status is obsolete. Moisture sensitivity level remains at MSL 1. This option is suitable when onsemi component qualification is required or when Broadcom parts are unavailable.

SML-LXR851YC-TR (Lumex Parametric Equivalent): This part is currently in active production with ROHS3 compliance. It maintains the 2.1V forward voltage and 1.00mm height of the original component. The viewing angle is wider (160° versus 155°), and brightness is comparable (6mcd versus 5mcd). Moisture sensitivity level is MSL 3, requiring stricter handling protocols during storage and assembly.

Frequently Asked Questions (FAQ)

Q: Can HSMY-C680 be used as a direct replacement for HSMY-C660?

A: Yes. Both parts share identical electrical characteristics (2.1V forward voltage, 20mA test current), package type (2-SMD, No Lead), and mounting configuration (Surface Mount, Right Angle). The HSMY-C680 is brighter (9.3mcd versus 5mcd) and has a narrower viewing angle (125° versus 155°). Verify that the application tolerates these brightness and viewing angle differences before substitution.

Q: What is the impact of the 1.10mm height of QTLP610C3TR compared to the 1.00mm height of HSMY-C660?

A: The 0.10mm height difference may affect PCB layout clearance in space-constrained applications. Verify mechanical fit within the assembly before design implementation.

Q: Does the forward voltage difference between QTLP610C3TR (2V) and HSMY-C660 (2.1V) affect circuit design?

A: The 0.1V difference is within typical LED tolerance ranges. Circuit designs using current-limiting resistors will accommodate this variation. Verify that the application's voltage supply and current-limiting circuit design remain within acceptable operating parameters.

Q: What are the storage and handling implications of different MSL ratings?

A: HSMY-C660 and QTLP610C3TR have MSL 1 (unlimited shelf life). HSMY-C680 has MSL 2A (4-week floor life after moisture exposure). SML-LXR851YC-TR has MSL 3 (168-hour floor life). Higher MSL ratings require stricter moisture control during storage and assembly. Verify that manufacturing processes and storage conditions meet the MSL requirements of the selected substitute.

Q: Are all substitute parts ROHS3 compliant?

A: HSMY-C680 and SML-LXR851YC-TR are ROHS3 compliant. HSMY-C660 and QTLP610C3TR do not list ROHS3 compliance status. Verify regulatory compliance requirements for your application before final part selection.

Q: Can wavelength differences between substitutes affect visual appearance?

A: All substitute parts are yellow LEDs with dominant wavelengths between 586nm and 590nm, which fall within the yellow spectrum. Visual appearance differences are negligible in typical indication applications. Verify color matching requirements for applications with specific aesthetic or functional color specifications.