SLH-34VR3FS Equivalent & Substitute Parts

Part Overview

The SLH-34VR3FS is a red diffused LED indicator manufactured by Rohm Semiconductor, classified as an LED Indication discrete component in T-1 through-hole package format. This part is currently listed as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity. The obsolete status requires engineers to evaluate active substitute components that maintain electrical and mechanical compatibility with existing circuit designs.

Substiute Parts

SLH-34VR3FS

Rohm SemiconductorIn Stock: 950SLH-34VR3FS Datasheet

Current PartRFQ

LTL-4211N

Lite-On Inc.In Stock: 28039LTL-4211N Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The LTL-4211N from Lite-On Inc. qualifies as a direct substitute for the SLH-34VR3FS based on the following alignment of critical parameters:

Matching Electrical Characteristics:

• Red LED color specification
• Diffused lens transparency
• T-1 form factor (3mm diameter)
• Through-hole radial mounting configuration

Matching Compliance & Environmental Standards:

• ROHS3 Compliant certification
• Moisture Sensitivity Level 1 (Unlimited)
• ECCN EAR99 classification
• HTSUS code 8541.41.0000

Operational Compatibility:

• Both components function as LED indicators in discrete applications
• Radial package geometry enables direct PCB mounting replacement
• Diffused lens type maintains consistent light distribution characteristics

The substitute relationship is established through equivalence in form factor, function, and regulatory compliance. The LTL-4211N is currently in active production status, providing supply continuity for the obsolete SLH-34VR3FS.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: LTL-4211N

The LTL-4211N is the appropriate substitute for the obsolete SLH-34VR3FS based on the following engineering criteria:

Compliance Alignment: Both components maintain ROHS3 compliance and identical moisture sensitivity classification, ensuring compatibility with current manufacturing and environmental standards. The EAR99 export classification and HTSUS code alignment confirm regulatory equivalence.

Form Factor Compatibility: The T-1 through-hole radial package of the LTL-4211N directly corresponds to the SLH-34VR3FS mechanical specification, enabling direct PCB footprint compatibility without layout modifications.

Functional Equivalence: Red diffused LED indicators with identical lens characteristics ensure optical performance consistency in indicator applications. The LTL-4211N's active production status provides supply security and long-term availability.

Supply Continuity: With 28,025 units in current inventory, the LTL-4211N offers immediate availability for production requirements, addressing the obsolescence of the SLH-34VR3FS.

Frequently Asked Questions (FAQ)

Q: Can the LTL-4211N directly replace the SLH-34VR3FS without PCB modifications?

A: Yes. Both components utilize identical T-1 through-hole radial packaging, enabling direct footprint compatibility. No PCB layout changes are required for mechanical or electrical integration.

Q: Are there compliance differences between the two parts?

A: No. Both components are ROHS3 compliant with identical moisture sensitivity levels (MSL 1), ECCN classification (EAR99), and HTSUS codes (8541.41.0000). Regulatory requirements are fully aligned.

Q: What is the primary reason for substitution?

A: The SLH-34VR3FS is obsolete and no longer manufactured by Rohm Semiconductor. The LTL-4211N is an active product with established supply chains and inventory availability.

Q: Are the electrical operating parameters identical?

A: The LTL-4211N specifies a forward voltage of 2.1V at 10mA test current and a dominant wavelength of 657nm. The SLH-34VR3FS electrical parameters are not provided in available documentation. Both components function as red LED indicators in discrete applications with compatible optical characteristics.

Q: What is the lens configuration of the substitute part?

A: The LTL-4211N features a round domed-top lens with diffused transparency, matching the diffused lens specification of the SLH-34VR3FS. The 60-degree viewing angle provides standard indicator visibility for typical applications.

Q: Is the LTL-4211N suitable for new designs?

A: Yes. The LTL-4211N is in active production status and meets all current compliance requirements. It is appropriate for both replacement of obsolete components and incorporation into new designs.