QSMW-C421 Equivalent & Substitute Parts

Part Overview

The QSMW-C421 is an InGaN white LED indicator component manufactured by Broadcom Limited, designed for discrete LED indication applications. This part is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure supply chain availability. The QSMW-C421 features surface mount, right-angle mounting configuration suitable for standard LED indication circuits.

Substiute Parts

QSMW-C421

Broadcom LimitedIn Stock: 742QSMW-C421 Datasheet

Current PartRFQ

HSMW-C340

Broadcom LimitedIn Stock: 15752HSMW-C340 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The HSMW-C340 qualifies as a direct substitute for the QSMW-C421 based on the following alignment criteria:

Matching Parameters:

• Manufacturer: Both manufactured by Broadcom Limited
• Mounting Type: Both feature surface mount, right-angle configuration
• Application: Both serve LED indication functions in discrete component applications
• Regulatory Classification: Both assigned ECCN EAR99 and HTSUS 8541.41.0000
• Color: Both are white LEDs

Substitution Basis: The HSMW-C340 is the manufacturer-recommended equivalent, providing functional replacement capability for the obsolete QSMW-C421. The substitute maintains compatibility with right-angle surface mount applications while offering active product status and improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

The HSMW-C340 is the appropriate substitute for the obsolete QSMW-C421 based on manufacturer designation and regulatory alignment. Both components share identical ECCN and HTSUS classifications, confirming equivalent export control and tariff treatment. The HSMW-C340 maintains active product status with ROHS3 compliance certification, supporting long-term supply chain reliability and regulatory adherence in new designs or production continuations.

The MSL rating difference (1 versus 2A) reflects standard handling protocol variations; the HSMW-C340's 2A rating (4 weeks) remains within acceptable moisture control parameters for standard manufacturing environments.

Frequently Asked Questions (FAQ)

Q: Why is the QSMW-C421 being discontinued? A: The QSMW-C421 is classified as obsolete by Broadcom Limited. The HSMW-C340 is the manufacturer-recommended active replacement.

Q: Are the QSMW-C421 and HSMW-C340 pin-compatible? A: Both components feature surface mount, right-angle configuration. Verify PCB footprint compatibility with the 2-SMD, J-Lead package specification of the HSMW-C340 against your existing design.

Q: What is the difference in MSL ratings between these parts? A: The QSMW-C421 has MSL 1 (unlimited moisture exposure tolerance), while the HSMW-C340 has MSL 2A (4-week moisture exposure limit). Standard manufacturing environments with appropriate moisture control meet the HSMW-C340 requirements.

Q: Are both parts subject to the same export controls? A: Yes. Both components are classified as ECCN EAR99 and HTSUS 8541.41.0000, ensuring identical export control and tariff treatment.

Q: Does the HSMW-C340 meet RoHS requirements? A: Yes. The HSMW-C340 is ROHS3 compliant, supporting environmental and regulatory requirements for modern manufacturing.