LPA-C011301S-37.9 Equivalent & Substitute Parts

Part Overview

The LPA-C011301S-37.9 is a light pipe assembly manufactured by Lumex Opto/Components Inc. as part of the TransBrite™ series. This component is a single clear rigid light pipe with a 3mm round flat-top lens, designed for board mount press-fit applications in vertical SMT configurations. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the product line, enabling component interchangeability in applications where dimensional or performance specifications allow variation within defined tolerances.

Substiute Parts

LPA-C011301S-37.9

Lumex Opto/Components Inc.In Stock: 637LPA-C011301S-37.9 Datasheet

Current PartRFQ

LPA-C011301S-50

Lumex Opto/Components Inc.In Stock: 17045LPA-C011301S-50 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LPA-C011301S-37.9 is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

• Manufacturer: Lumex Opto/Components Inc.
• Series: TransBrite™
• Configuration: Single optical channel
• Type: Rigid construction
• Color: Clear optical transmission
• Lens Size: 3mm aperture
• Lens Style: Round with Flat Top geometry
• Mounting Type: Board Mount, Press Fit
• RoHS Status: ROHS3 Compliant
• MSL Rating: 1 (Unlimited)
• REACH Status: REACH Unaffected

Variable Parameter Allowing Substitution:

• Overall assembly length (37.9mm vs. 50mm): Length variation is permitted when application mechanical envelope specifications accommodate the dimensional difference. Both configurations maintain identical optical and electrical interface characteristics.

The substitute part LPA-C011301S-50 maintains all mandatory equivalence parameters while differing only in overall length, making it suitable for applications where the increased assembly height does not conflict with PCB layout or enclosure constraints.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria:

The LPA-C011301S-37.9 is the specified component for applications with vertical height constraints of 37.9mm or less. Both the primary part and substitute maintain active production status, ensuring long-term supply availability and consistent manufacturing quality under ROHS3 and REACH compliance frameworks.

Substitution Applicability:

The LPA-C011301S-50 serves as a direct substitute when PCB layout and enclosure design accommodate the additional 12.1mm assembly height. Both parts share identical optical interface specifications, press-fit mounting geometry, and electrical characteristics. Selection between these variants depends solely on mechanical envelope availability within the target application.

Compliance Assurance:

Both parts maintain equivalent regulatory compliance status (ROHS3 Compliant, REACH Unaffected, MSL 1). No additional qualification or testing is required when substituting between these variants, provided mechanical fit is confirmed.

Frequently Asked Questions (FAQ)

Q: What is the primary difference between LPA-C011301S-37.9 and LPA-C011301S-50?

A: The parts are identical in all optical, electrical, and mounting specifications. The only difference is overall assembly length: 37.9mm versus 50mm. This length variation accommodates different PCB height requirements while maintaining the same 3mm lens aperture and press-fit interface.

Q: Can LPA-C011301S-50 be used as a direct replacement for LPA-C011301S-37.9?

A: Yes, provided the application mechanical envelope permits the additional 12.1mm height. All optical, electrical, and compliance characteristics are equivalent. Verify that the increased length does not interfere with enclosure design or adjacent components.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts are identical in optical transmission, lens geometry, and electrical interface specifications. Performance differences, if any, would be determined solely by application-specific mechanical constraints.

Q: Do both parts require the same PCB footprint?

A: Yes. Both parts use identical press-fit mounting geometry and board mount interface. PCB footprint design is unchanged. Only the vertical clearance above the PCB differs.

Q: What is the MSL rating for both parts?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage, handling, or assembly processes.

Q: Are both parts ROHS3 compliant?

A: Yes. Both LPA-C011301S-37.9 and LPA-C011301S-50 are ROHS3 compliant and REACH unaffected, meeting current environmental regulatory requirements.

Q: Which part should be selected for new designs?

A: Selection depends on available vertical space. If the application permits 50mm height, either part is acceptable. For space-constrained designs, the LPA-C011301S-37.9 is the appropriate choice. Both parts are in active production with equivalent supply reliability.