HSMA-S660 Equivalent & Substitute Parts

Part Overview

The HSMA-S660 is an amber 590nm LED indication component manufactured by Broadcom Limited, configured as a discrete 1.9V 2-SMD surface mount right-angle device with diffused lens. This part operates at 20mA test current with a 65mcd millicandela rating and 155° viewing angle. The product is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design requirements and procurement needs.

Substiute Parts

HSMA-S660

Broadcom LimitedIn Stock: 2114HSMA-S660 Datasheet

Current PartRFQ

HSMA-C680

Broadcom LimitedIn Stock: 41688HSMA-C680 Datasheet

DirectRFQ

SML-A12WTT86

Rohm SemiconductorIn Stock: 6487SML-A12WTT86 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HSMA-S660 are identified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Color: Amber wavelength range (590-594nm dominant wavelength)
• Mounting Type: Surface Mount, Right Angle configuration
• Package Type: 2-SMD, No Lead
• Forward Voltage: Operating range 1.9V to 2.0V
• Test Current: 20mA standard
• Lens Style: Rectangle with domed top
• Lens Size: 2.00mm x 1.00mm
• Height: Maximum 1.00mm
• Moisture Sensitivity Level: 2A classification

Identified Substitutes:

1. HSMA-C680 (Broadcom Limited) - Direct manufacturer alternative with active product status, amber 591nm wavelength, 2V forward voltage, 76.9mcd rating, clear lens transparency, 115° viewing angle, and identical mechanical envelope.

2. SML-A12WTT86 (Rohm Semiconductor) - Cross-manufacturer substitute with yellow 590nm wavelength, 2V forward voltage, 63mcd rating, clear lens transparency, flat-top lens style, smaller mechanical footprint (1.60mm L x 1.15mm W, 0.65mm height), and 1611 package designation.

Parameter Comparison

Engineering Selection Recommendations

HSMA-C680 Selection Criteria: HSMA-C680 is the primary substitute for HSMA-S660 applications. Both components are manufactured by Broadcom Limited and share identical mechanical envelope specifications (3.00mm L x 1.00mm W, 1.00mm height maximum). HSMA-C680 maintains active product status with ROHS3 compliance and identical moisture sensitivity classification (2A, 4 Weeks). Forward voltage increases from 1.9V to 2V, and millicandela rating increases from 65mcd to 76.9mcd. Viewing angle reduces from 155° to 115°. Lens transparency changes from diffused to clear. These electrical and optical parameter variations must be evaluated against specific application requirements.

SML-A12WTT86 Selection Criteria: SML-A12WTT86 is a cross-manufacturer substitute from Rohm Semiconductor with active product status and ROHS3 compliance. This component operates at identical 20mA test current and 2V forward voltage. Millicandela rating of 63mcd approximates the original specification. Significant mechanical differences include smaller footprint (1.60mm L x 1.15mm W, 0.65mm height) and different lens style (flat top versus domed top). Moisture sensitivity level increases to 3 (168 Hours). Color classification shifts from amber to yellow with identical 590nm dominant wavelength. Space-constrained applications may benefit from the reduced height and footprint, provided optical and thermal characteristics remain acceptable.

Frequently Asked Questions (FAQ)

Q: Can HSMA-C680 directly replace HSMA-S660 without circuit modification?

A: HSMA-C680 operates at 2V forward voltage compared to HSMA-S660 at 1.9V. Circuit current-limiting resistor values must be recalculated to maintain 20mA test current at the higher forward voltage. Mechanical envelope compatibility is confirmed. Lens transparency change from diffused to clear affects light distribution characteristics.

Q: What are the optical differences between HSMA-S660 and HSMA-C680?

A: HSMA-S660 features a diffused lens with 155° viewing angle and 65mcd brightness. HSMA-C680 features a clear lens with 115° viewing angle and 76.9mcd brightness. Diffused lenses scatter light over a wider angle; clear lenses concentrate light in a narrower cone with higher intensity. Application requirements determine which optical characteristic is appropriate.

Q: Is SML-A12WTT86 suitable for applications requiring the exact HSMA-S660 form factor?

A: SML-A12WTT86 has a significantly smaller mechanical footprint (1.60mm L x 1.15mm W, 0.65mm height) compared to HSMA-S660 (3.20mm L x 2.00mm W, 1.00mm height). PCB layout and mechanical clearance requirements must be re-evaluated. The component is suitable only if space constraints permit the reduced dimensions.

Q: What compliance certifications apply to substitute parts?

A: HSMA-C680 and SML-A12WTT86 are both ROHS3 compliant and REACH unaffected. Both carry EAR99 ECCN classification and 8541.41.0000 HTSUS code. Moisture sensitivity levels differ: HSMA-C680 is 2A (4 Weeks); SML-A12WTT86 is 3 (168 Hours). Storage and handling procedures must align with respective moisture sensitivity classifications.

Q: Can color differences between amber and yellow affect application performance?

A: HSMA-S660 and HSMA-C680 are both amber with 590-591nm dominant wavelengths. SML-A12WTT86 is classified as yellow with 590nm dominant wavelength. Dominant wavelength alone does not determine perceived color; lens transparency and optical properties contribute to visual appearance. Applications with specific color indication requirements must evaluate whether yellow substitution is acceptable.

Q: What inventory considerations apply to these substitutes?

A: HSMA-S660 is obsolete with 2069 pieces in stock. HSMA-C680 is active with 41636 pieces available. SML-A12WTT86 is active with 6402 pieces available. Long-term procurement strategy should prioritize active components with established supply chains.