ASMC-PRB9-TV005 Equivalent & Substitute Parts

Part Overview

The ASMC-PRB9-TV005 is a red 630nm LED indication component in 4-PLCC surface mount package, manufactured by Broadcom Limited as part of the Envisium™ series. This part is classified as obsolete, making identification of active equivalent components essential for ongoing production and design continuity. The component delivers 920mcd at 2.8V forward voltage with a 120° viewing angle, designed for discrete indication applications requiring clear lens optics and standard configuration mounting.

Substiute Parts

ASMC-PRB9-TV005

Broadcom LimitedIn Stock: 1056ASMC-PRB9-TV005 Datasheet

Current PartRFQ

HSMC-A401-U80M1

Broadcom LimitedIn Stock: 34777HSMC-A401-U80M1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASMC-PRB9-TV005 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Package type: 4-PLCC surface mount configuration
• Lens size: 2.20mm diameter round with flat top
• Physical dimensions: 3.20mm L x 2.80mm W, 2.10mm max height
• Mounting type: Surface mount
• Color: Red spectrum indication
• Viewing angle: 120°
• Compliance: ROHS3 compliant, REACH unaffected
• Moisture sensitivity: 2A (4 Weeks)

Allowable Variation Parameters:

• Wavelength - Dominant: Red spectrum range (626nm–630nm acceptable)
• Voltage - Forward (Vf): 2.2V–2.8V range acceptable for indication applications
• Millicandela Rating: 920mcd–980mcd range acceptable
• Product Status: Active preferred over obsolete for supply continuity

The HSMC-A401-U80M1 meets all critical matching parameters while operating within allowable electrical variation ranges.

Parameter Comparison

Engineering Selection Recommendations

The HSMC-A401-U80M1 is the direct active equivalent for the obsolete ASMC-PRB9-TV005. Selection is based on the following engineering criteria:

Product Status: The HSMC-A401-U80M1 carries active product status, ensuring ongoing manufacturer support, supply availability, and compliance maintenance. The ASMC-PRB9-TV005 is obsolete, presenting supply risk and potential discontinuation of technical support.

Compliance & Certifications: Both components maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and use.

Electrical Performance: The HSMC-A401-U80M1 operates at 2.2V forward voltage compared to 2.8V for the main part, representing a 0.6V reduction. This lower forward voltage reduces power dissipation in series resistor networks and improves efficiency in battery-powered applications. The millicandela rating increases from 920mcd to 980mcd, providing enhanced luminous intensity within the same optical geometry.

Mechanical & Optical Compatibility: Identical package footprint (4-PLCC), lens geometry (2.20mm round with flat top), physical dimensions (3.20mm L x 2.80mm W, 2.10mm height), and viewing angle (120°) ensure direct PCB layout compatibility without redesign.

Wavelength Specification: The dominant wavelength shift from 630nm to 626nm remains within the red spectrum range for indication applications. Peak wavelength variation (639nm to 635nm) is within acceptable tolerance for visual indication purposes.

Frequently Asked Questions (FAQ)

Q: Can HSMC-A401-U80M1 be used as a direct replacement for ASMC-PRB9-TV005 without circuit modification?

A: Yes. The components share identical package geometry, footprint, mounting type, and viewing angle. The lower forward voltage (2.2V vs 2.8V) may require adjustment of series current-limiting resistor values to maintain consistent brightness, but no PCB layout changes are necessary.

Q: What is the impact of the 0.6V forward voltage difference?

A: The HSMC-A401-U80M1 requires 0.6V less forward voltage. In a fixed voltage supply circuit, this reduces power dissipation in the series resistor. To maintain equivalent brightness, recalculate the series resistor using the new 2.2V forward voltage specification. The formula is: R = (Vsupply - Vf) / Itest.

Q: Are there packaging differences between these components?

A: The main part (ASMC-PRB9-TV005) is supplied in standard packaging, while the substitute (HSMC-A401-U80M1) is supplied in Tape & Reel (TR) format. Both use identical 4-PLCC package geometry. Tape & Reel packaging is standard for high-volume surface mount assembly and does not affect component performance or PCB compatibility.

Q: How does the wavelength difference affect visual appearance?

A: The dominant wavelength shifts from 630nm to 626nm, both within the red spectrum. This 4nm difference is imperceptible to human vision in indication applications. Both components produce red indication light suitable for status display, warning, and alert functions.

Q: Is the higher millicandela rating (980mcd vs 920mcd) a concern?

A: No. The increased luminous intensity (60mcd higher) improves visibility without creating compatibility issues. If consistent brightness with the original design is required, reduce the test current or increase the series resistor value proportionally.

Q: What is the supply status difference between these parts?

A: ASMC-PRB9-TV005 is obsolete with no ongoing manufacturer support. HSMC-A401-U80M1 is active with full manufacturer support, ensuring long-term availability and compliance maintenance. For new designs and production continuity, the active part is the appropriate selection.

Q: Do both components meet current regulatory requirements?

A: Yes. Both are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance regulations for electronic components in EU and global markets.