CMDA2CB7D1S Equivalent & Substitute Parts

Part Overview

The CMDA2CB7D1S is a blue diffused LED in 1206 (3216 Metric) surface mount package manufactured by Visual Communications Company (VCC). This component is designed for LED indication applications with a forward voltage of 3.4V and a brightness rating of 55mcd. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Color	Blue
Lens Transparency	Diffused
Millicandela Rating	55mcd
Voltage - Forward (Vf) (Typ)	3.4V
Current - Test	20mA
Package / Case	1206 (3216 Metric)
Mounting Type	Surface Mount
Lens Size	2.00mm x 1.60mm
Height (Max)	1.10mm
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the CMDA2CB7D1S is determined by strict equivalence across the following parameters:

Color and Wavelength: Blue LED with peak wavelength in the 469-473nm range
Optical Characteristics: Diffused lens with 2.00mm x 1.60mm dimensions and rectangle flat-top style
Electrical Specifications: Forward voltage of 3.4V at 20mA test current
Brightness: 55mcd millicandela rating
Package Compatibility: 1206 (3216 Metric) surface mount package with maximum height of 1.10mm
Regulatory Compliance: ROHS3 compliant status

The HSMR-C150 from Broadcom Limited meets all these criteria and qualifies as a direct substitute.

Parameter Comparison

Parameter	CMDA2CB7D1S (VCC)	HSMR-C150 (Broadcom)
Color	Blue	Blue
Lens Transparency	Diffused	Diffused
Millicandela Rating	55mcd	55mcd
Voltage - Forward (Vf) (Typ)	3.4V	3.4V
Current - Test	20mA	20mA
Viewing Angle	140°	155°
Wavelength - Peak	469nm	469nm
Package / Case	1206 (3216 Metric)	1206 (3216 Metric)
Size / Dimension	3.20mm L x 1.60mm W	3.20mm L x 1.60mm W
Height (Max)	1.10mm	1.10mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active

Engineering Selection Recommendations

The HSMR-C150 is the qualified substitute for the CMDA2CB7D1S. Both components share identical electrical and mechanical specifications, including forward voltage, test current, package dimensions, and brightness rating. The HSMR-C150 maintains ROHS3 compliance and is currently in active production status, ensuring long-term availability and supply chain continuity. The slightly wider viewing angle (155° versus 140°) of the HSMR-C150 provides enhanced light distribution characteristics without compromising the optical requirements of the original design.

Frequently Asked Questions (FAQ)

Q: Can the HSMR-C150 be used as a direct replacement for the CMDA2CB7D1S in existing designs?

A: Yes. Both components share identical forward voltage (3.4V), test current (20mA), brightness rating (55mcd), package dimensions (1206/3216 Metric), and maximum height (1.10mm). The components are electrically and mechanically interchangeable.

Q: What is the difference in viewing angle between these two parts?

A: The CMDA2CB7D1S has a 140° viewing angle, while the HSMR-C150 has a 155° viewing angle. This difference represents a wider light distribution pattern in the substitute part and does not affect compatibility in standard LED indication applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the CMDA2CB7D1S and HSMR-C150 are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: What is the moisture sensitivity level difference?

A: The CMDA2CB7D1S has MSL 1 (Unlimited), while the HSMR-C150 has MSL 2A (4 Weeks). This indicates the HSMR-C150 requires standard moisture control during storage and handling, consistent with industry practices for surface mount components.

Q: Why is the CMDA2CB7D1S listed as obsolete?

A: The CMDA2CB7D1S is no longer in active production. The HSMR-C150 serves as the current production equivalent, offering the same functional and electrical characteristics with ongoing manufacturer support.

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