ELM 3-550 Equivalent & Substitute Parts

Part Overview

The ELM 3-550 is a T1 3/4 LED standoff manufactured by Bivar Inc., designed for vertical mounting applications with a 0.550" (13.97mm) length. This component features a black PVC construction and is classified as an active product with full RoHS3 compliance. LED standoffs serve as mechanical and electrical interfaces for LED component positioning in circuit assemblies. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within acceptable tolerances, enabling component interchangeability for procurement flexibility and supply chain continuity.

Substiute Parts

ELM 3-550

Bivar Inc.In Stock: 697ELM 3-550 Datasheet

Current PartRFQ

ELM 1-545

Bivar Inc.In Stock: 20142ELM 1-545 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELM 3-550 is determined by the following critical parameters:

Primary Compatibility Criteria:

• LED Type: T1 3/4 (mechanical form factor)
• Material: PVC (chemical and thermal properties)
• Color: Black (visual and optical consistency)
• Mounting Orientation: Vertical (functional requirement)
• RoHS Compliance: ROHS3 Compliant (regulatory requirement)
• Moisture Sensitivity Level: 1 (Unlimited) (storage and handling compatibility)

Dimensional Tolerance:

• Length variance within 0.005" (0.127mm) of the primary part specification

The ELM 1-545 qualifies as a parametric equivalent based on matching LED type, material composition, color specification, vertical mounting configuration, and regulatory compliance status. The length differential of 0.005" (0.127mm) falls within acceptable mechanical tolerance for standoff applications where precise height matching is not a critical design constraint.

Parameter Comparison

Engineering Selection Recommendations

Both the ELM 3-550 and ELM 1-545 maintain active product status with Bivar Inc., ensuring continued manufacturer support and supply availability. Both components carry ROHS3 compliance certification, satisfying regulatory requirements for restricted substance limitations. The Moisture Sensitivity Level 1 (Unlimited) classification for both parts indicates identical storage and handling requirements with no special environmental controls necessary.

The 0.005" (0.127mm) length differential between the primary part and substitute represents a 0.036% dimensional variance. This variance is acceptable for applications where LED standoff height does not function as a critical design parameter. Component selection should be based on application-specific height requirements and circuit board layout constraints.

Frequently Asked Questions (FAQ)

Q: Can the ELM 1-545 be used as a direct replacement for the ELM 3-550?

A: The ELM 1-545 functions as a parametric equivalent for the ELM 3-550 when LED type, material, color, mounting orientation, and regulatory compliance are the determining factors. The 0.005" length difference must be evaluated against specific application height requirements.

Q: What is the significance of the length difference between these parts?

A: The ELM 3-550 measures 0.550" (13.97mm) while the ELM 1-545 measures 0.545" (13.84mm). This 0.005" (0.127mm) difference affects the vertical standoff height. Applications with tight vertical clearance constraints or precise LED positioning requirements must account for this dimensional variance.

Q: Are both parts subject to the same storage and handling requirements?

A: Yes. Both the ELM 3-550 and ELM 1-545 carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control or baking procedures are required prior to assembly.

Q: Do both parts meet the same regulatory standards?

A: Both components are ROHS3 compliant, satisfying identical regulatory requirements for restricted substance limitations in electronic component manufacturing.

Q: What packaging format is used for both parts?

A: Both the ELM 3-550 and ELM 1-545 are supplied in bag packaging, maintaining consistent handling and storage protocols.

Q: How do the series designations (ELM 3 vs. ELM 1) affect substitution?

A: Series designation reflects internal Bivar Inc. product line organization. Substitution eligibility is determined by matching electrical and mechanical parameters rather than series classification. Both parts maintain identical LED type, material, color, and compliance specifications.