QSME-C18B LED Equivalent & Substitute Parts

Part Overview

The QSME-C18B is a discrete LED indication component manufactured by Broadcom Limited. This part is classified as obsolete and is no longer in active production. Due to its obsolete status, sourcing original units may present supply chain challenges. Identifying functionally equivalent substitute components ensures design continuity and maintains availability for applications requiring LED indication functionality.

Substiute Parts

QSME-C18B

Broadcom LimitedIn Stock: 1189QSME-C18B Datasheet

Current PartRFQ

HSME-C191

Broadcom LimitedIn Stock: 24191HSME-C191 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The HSME-C191 is identified as the manufacturer-recommended substitute for the QSME-C18B. Substitution eligibility is determined by the following criteria:

Functional Category Match: Both components serve as discrete LED indication devices within the same product family from Broadcom Limited.

Regulatory Compliance Alignment: Both parts share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications, ensuring equivalent export control and tariff treatment.

Product Status Consideration: While the original part is obsolete, the substitute is active and maintains current manufacturing support, addressing supply availability concerns.

Packaging and Form Factor: The HSME-C191 utilizes 0603 (1608 Metric) surface mount packaging, a standard industry format for discrete LED components.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: HSME-C191 is the manufacturer-recommended equivalent for QSME-C18B applications.

Compliance Basis: Both components maintain identical export control classification (EAR99) and tariff codes (8541.41.0000), ensuring regulatory equivalence for procurement and logistics purposes.

Supply Chain Advantage: The HSME-C191 maintains active product status with 24,161 units in current inventory, compared to the obsolete QSME-C18B status. This availability differential supports uninterrupted supply chain operations.

Environmental Compliance: The HSME-C191 carries ROHS3 compliance certification and REACH unaffected status, meeting current environmental regulatory requirements for electronic component manufacturing and distribution.

Packaging Standardization: The 0603 (1608 Metric) surface mount package of the HSME-C191 aligns with industry-standard PCB assembly processes and equipment compatibility.

Frequently Asked Questions (FAQ)

Q: Why is the QSME-C18B classified as obsolete?

A: The QSME-C18B has reached end-of-life status within Broadcom Limited's product portfolio. Obsolete classification indicates the manufacturer no longer produces or supports this component.

Q: Is the HSME-C191 a direct replacement for the QSME-C18B?

A: The HSME-C191 is the manufacturer-recommended substitute. Both components are discrete LED indication devices from Broadcom Limited with identical regulatory classifications (ECCN and HTSUS codes).

Q: What are the key technical specifications of the HSME-C191?

A: The HSME-C191 is a green diffused LED (572nm dominant wavelength) in 0603 surface mount packaging with 2.1V forward voltage, 20mA test current, 50mcd brightness rating, and 170° viewing angle.

Q: Does the HSME-C191 meet current environmental standards?

A: Yes. The HSME-C191 is ROHS3 compliant and REACH unaffected, meeting current environmental regulatory requirements for electronic components.

Q: What is the moisture sensitivity level of the HSME-C191?

A: The HSME-C191 carries a Moisture Sensitivity Level (MSL) rating of 2A (4 Weeks), indicating standard moisture handling requirements for surface mount LED components.

Q: Are there packaging format differences between the original and substitute?

A: The HSME-C191 utilizes 0603 (1608 Metric) surface mount packaging available in Cut Tape (CT) and Digi-Reel® formats. Original QSME-C18B packaging specifications are not provided in available documentation.

Q: What inventory levels are available for each part?

A: The QSME-C18B has 1,089 units in stock (obsolete status). The HSME-C191 has 24,161 units in current inventory (active status), providing significantly greater supply availability.