HSMF-C168 Equivalent & Substitute Parts

Part Overview

The HSMF-C168 is a dual-color surface mount LED indicator manufactured by Broadcom Limited, featuring independent blue and green emitters in a 0603 (1608 Metric) package. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity. The part provides blue (470nm) and green (525nm) indication capability with diffused lens characteristics suitable for general illumination applications.

Substiute Parts

HSMF-C168

Broadcom LimitedIn Stock: 1097HSMF-C168 Datasheet

Current PartRFQ

CMDA20AYAA7D1S

Visual Communications Company - VCCIn Stock: 17983CMDA20AYAA7D1S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HSMF-C168 is based on the following allowable parameters:

• Package compatibility: 0603 (1608 Metric) surface mount form factor
• Mechanical dimensions: 1.60mm L x 0.80mm W, 0.50mm maximum height
• Configuration: Dual independent color emitters
• Lens characteristics: Diffused lens with 120° viewing angle
• Mounting technology: Surface mount assembly compatibility
• Moisture sensitivity: MSL 2A classification

The CMDA20AYAA7D1S from Visual Communications Company (VCC) meets these mechanical and electrical interface requirements, enabling direct substitution in PCB layouts and assembly processes. While color wavelengths and forward voltage differ, the physical package, mounting characteristics, and functional role as a dual-color indicator remain compatible.

Parameter Comparison

Engineering Selection Recommendations

The CMDA20AYAA7D1S is the designated manufacturer-recommended substitute for the obsolete HSMF-C168. Selection of this alternative is supported by:

• Active product status ensuring long-term availability and supply chain continuity
• Identical mechanical package and mounting footprint enabling direct PCB layout compatibility
• Matching MSL classification (2A) for identical moisture handling and storage requirements
• Equivalent REACH and ECCN compliance status maintaining regulatory alignment
• RoHS3 compliance certification providing environmental and safety compliance

Circuit design modifications are required to accommodate the lower forward voltage (2.2V versus 3.4V) and different color wavelengths (amber/green versus blue/green). Current-limiting resistor values and color indication logic must be re-evaluated for the target application.

Frequently Asked Questions (FAQ)

Q: Can the CMDA20AYAA7D1S be used as a direct drop-in replacement without PCB modifications?

A: The CMDA20AYAA7D1S is mechanically compatible with the HSMF-C168 footprint and requires no PCB layout changes. However, circuit modifications are necessary due to different forward voltage specifications (2.2V versus 3.4V) and color wavelengths. Current-limiting resistor values must be recalculated, and color indication logic must be re-evaluated for the application.

Q: What are the key differences between these two parts?

A: The primary differences are forward voltage (3.4V for HSMF-C168 versus 2.2V for CMDA20AYAA7D1S), color wavelengths (blue/green versus amber/green), and millicandela ratings. Both parts share identical package dimensions, mounting type, viewing angle, and MSL classification.

Q: Are there any compliance or regulatory differences?

A: Both parts maintain REACH Unaffected status and EAR99 ECCN classification. The CMDA20AYAA7D1S adds RoHS3 compliance certification. No regulatory barriers exist for substitution.

Q: What is the impact of different forward voltages on circuit design?

A: The 1.2V difference in forward voltage (3.4V to 2.2V) directly affects current-limiting resistor calculations. Designs must recalculate series resistor values to maintain the 20mA test current specification and ensure proper LED operation within the target application voltage range.

Q: Are the packages truly identical?

A: Yes. Both parts use the 0603 (1608 Metric) package with identical dimensions (1.60mm L x 0.80mm W, 0.50mm maximum height), lens style (rectangle with flat top), and surface mount mounting type. PCB footprints are directly compatible.