QLMP-LM78-34CDD LED Equivalent & Substitute Parts

Part Overview

The QLMP-LM78-34CDD is a 5MM LED indication component manufactured by Broadcom Limited. This part is classified as obsolete, indicating it is no longer in active production. Due to its discontinued status, identifying suitable equivalent and substitute parts is essential for maintaining system functionality, ensuring design continuity, and supporting ongoing maintenance and repair operations.

Substiute Parts

QLMP-LM78-34CDD

Broadcom LimitedIn Stock: 1058QLMP-LM78-34CDD Datasheet

Current PartRFQ

HLMP-LM71-Z30DD

Broadcom LimitedIn Stock: 826HLMP-LM71-Z30DD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the QLMP-LM78-34CDD is determined by the following criteria:

• Manufacturer Compatibility: Parts from Broadcom Limited maintain design consistency and supply chain reliability
• Package Type: Radial through-hole mounting configuration ensures mechanical and electrical compatibility
• Regulatory Compliance: REACH Unaffected and EAR99 classification alignment
• Moisture Sensitivity: MSL 1 (Unlimited) rating for standard operating environments
• Functional Category: LED indication discrete components with equivalent electrical performance characteristics

The HLMP-LM71-Z30DD is identified as the manufacturer-recommended substitute, meeting all substitution criteria for this product category.

Parameter Comparison

Engineering Selection Recommendations

The HLMP-LM71-Z30DD is the manufacturer-recommended substitute for the obsolete QLMP-LM78-34CDD. Selection is based on:

• Active Product Status: The substitute is in active production, ensuring long-term availability and supply chain continuity
• Regulatory Alignment: Both parts maintain identical REACH Unaffected and EAR99 classifications, ensuring compliance consistency
• Moisture Sensitivity Equivalence: Both parts carry MSL 1 (Unlimited) rating, suitable for standard operating environments
• Manufacturer Consistency: Both components are manufactured by Broadcom Limited, maintaining design and quality standards
• Package Compatibility: Radial through-hole configuration ensures mechanical fit in existing PCB designs

The HLMP-LM71-Z30DD provides enhanced compliance through ROHS3 certification, supporting modern environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Why is the QLMP-LM78-34CDD classified as obsolete?

A: The QLMP-LM78-34CDD has been discontinued by Broadcom Limited and is no longer manufactured. Obsolete classification indicates the part is no longer available through standard distribution channels for new production orders.

Q: What are the key differences between the main part and the substitute?

A: The primary differences are product status (obsolete vs. active), lens configuration (5MM vs. 4MM oval), and color specification (unspecified vs. green). Both parts share identical regulatory compliance, moisture sensitivity ratings, and radial through-hole package type.

Q: Is the HLMP-LM71-Z30DD mechanically compatible with the QLMP-LM78-34CDD?

A: Both parts use radial through-hole mounting configuration. The HLMP-LM71-Z30DD features a 4MM oval lens compared to the 5MM specification of the main part. PCB footprint compatibility must be evaluated based on specific design requirements.

Q: Are there any compliance considerations when substituting these parts?

A: Both parts maintain REACH Unaffected and EAR99 classifications. The substitute offers additional ROHS3 compliance certification, which may be required for certain applications or markets.

Q: What inventory considerations should be evaluated?

A: The main part has 1028 units in stock, while the substitute has 756 units available. Both represent new original inventory from authorized sources.