HSMB-C190 Equivalent & Substitute Parts

Part Overview

The HSMB-C190 is a blue LED indication component manufactured by Broadcom Limited, featuring a clear lens with 466nm dominant wavelength and 3.8V forward voltage. This part is classified as obsolete, necessitating identification of active substitute components that maintain functional compatibility within the same package and mounting specifications. The 0603 (1608 Metric) surface mount form factor and discrete LED configuration define the substitution scope.

Substiute Parts

HSMB-C190

Broadcom LimitedIn Stock: 804HSMB-C190 Datasheet

Current PartRFQ

HSMR-C190

Broadcom LimitedIn Stock: 1312HSMR-C190 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HSMB-C190 is determined by the following mandatory parameters:

• Package / Case: 0603 (1608 Metric) — physical footprint compatibility
• Mounting Type: Surface Mount — assembly process compatibility
• Color: Blue — optical specification requirement
• Lens Style: Rectangle with Flat Top — mechanical form factor
• Lens Size: 1.00mm x 0.80mm — dimensional constraint
• Size / Dimension: 1.60mm L x 0.80mm W — PCB layout compatibility
• Height (Max): 0.80mm — clearance requirement

The HSMR-C190 qualifies as a substitute based on matching all mandatory parameters. Variations in wavelength (473nm vs. 466nm), forward voltage (3.4V vs. 3.8V), millicandela rating (55mcd vs. 6mcd), lens transparency (diffused vs. clear), and viewing angle (155° vs. 170°) are within acceptable tolerance ranges for indication applications and do not preclude substitution when circuit design accommodates these differences.

Parameter Comparison

Engineering Selection Recommendations

The HSMR-C190 is the designated substitute for the obsolete HSMB-C190. Selection is supported by:

• Active product status of HSMR-C190 ensures ongoing availability and supply chain continuity
• Identical package, mounting type, and physical dimensions guarantee PCB compatibility without layout modification
• ROHS3 compliance of HSMR-C190 provides regulatory advantage over the obsolete HSMB-C190
• Identical MSL rating (2A, 4 Weeks) maintains moisture handling requirements
• Identical REACH and ECCN classifications preserve regulatory standing

Circuit design must accommodate the forward voltage difference (3.4V vs. 3.8V) and the increased millicandela rating (55mcd vs. 6mcd). The diffused lens of HSMR-C190 versus the clear lens of HSMB-C190 affects light distribution characteristics and should be evaluated against application requirements.

Frequently Asked Questions (FAQ)

Q: Can HSMR-C190 be used as a direct drop-in replacement for HSMB-C190?

A: Physical and electrical compatibility is confirmed for the 0603 (1608 Metric) package and surface mount assembly. Circuit design must account for the 0.4V lower forward voltage and 9x higher brightness of the HSMR-C190. The diffused lens produces different light distribution than the clear lens.

Q: What is the impact of the wavelength difference (466nm vs. 473nm)?

A: Both wavelengths fall within the blue spectrum. The 7nm difference is within the tolerance range for indication applications. Visual perception difference is minimal for human observation.

Q: Does the higher millicandela rating (55mcd vs. 6mcd) require circuit modification?

A: The increased brightness may require current limiting adjustment depending on application requirements. Circuit design should be reviewed to confirm the higher luminous intensity is acceptable or if current limiting resistor values require adjustment.

Q: Are there packaging or handling differences between these parts?

A: Both parts share identical MSL rating (2A, 4 Weeks) and identical package dimensions. Handling and storage procedures remain unchanged.

Q: What is the significance of the lens transparency difference (clear vs. diffused)?

A: Clear lens provides directional light output with higher intensity in the viewing direction. Diffused lens spreads light more uniformly across the viewing angle. Application requirements determine which is appropriate.