ELM 2-655 Equivalent & Substitute Parts

Part Overview

The ELM 2-655 is a T1 LED standoff manufactured by Bivar Inc., designed for vertical mounting applications with a 0.655" (16.64mm) height specification. This component is Active product status and serves as a mechanical spacer and alignment fixture for T1 LED assemblies in standard PCB mounting configurations. Equivalent and substitute parts are necessary due to height tolerance variations in printed circuit board designs, manufacturing tolerances, and assembly requirements that may necessitate alternative standoff heights within the same product series.

Substiute Parts

ELM 2-655

Bivar Inc.In Stock: 1051ELM 2-655 Datasheet

Current PartRFQ

ELM 2-17MM

Bivar Inc.In Stock: 1852ELM 2-17MM Datasheet

Parametric EquivalentRFQ

ELM 2-665

Bivar Inc.In Stock: 909ELM 2-665 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELM 2-655 is determined by the following critical parameters:

• Series Continuity: All substitute parts must belong to the ELM 2 series to maintain mechanical and electrical compatibility with standard mounting interfaces.
• LED Type Match: T1 LED compatibility is mandatory across all substitutes; this defines the mounting footprint and cavity dimensions.
• Material Consistency: All parts utilize PVC material to ensure dimensional stability and thermal characteristics in standard operating environments.
• Color Match: Black PVC maintains visual consistency and may be required for specific assembly line identification protocols.
• Height Tolerance: Substitute parts exhibit length variations (0.655", 0.665", 0.670") to accommodate different PCB spacer requirements, with height differences not exceeding approximately 0.015" (0.38mm).
• Compliance Baseline: All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring regulatory and environmental compatibility.

Parameter Comparison

Engineering Selection Recommendations

Selection between ELM 2-655, ELM 2-665, and ELM 2-17MM is based on PCB spacer height requirements and mechanical clearance constraints in the assembly design. All three parts are Active status products manufactured by Bivar Inc. within the ELM 2 series, ensuring consistent mechanical mounting characteristics and compliance certification. ROHS3 compliance and MSL 1 rating are uniform across all options, allowing substitution without regulatory or environmental qualification impact. Part availability should be evaluated based on project inventory requirements; current stock levels vary across the three variants (ELM 2-655: 996 Pcs, ELM 2-665: 882 Pcs, ELM 2-17MM: 1815 Pcs).

Frequently Asked Questions (FAQ)

Q: Can ELM 2-665 or ELM 2-17MM be used directly in place of ELM 2-655 without PCB redesign? A: Substitution is dependent on PCB clearance and spacer height tolerance specifications in your assembly. The height difference between ELM 2-655 (16.64mm) and ELM 2-665 (16.89mm) is 0.25mm; between ELM 2-655 and ELM 2-17MM (17.02mm) is 0.38mm. Verify these height variations do not conflict with component placement, connector positions, or enclosure constraints in your design.

Q: Are there electrical differences between ELM 2-655 and its substitutes? A: No electrical differences exist. These parts are mechanical LED standoffs with identical T1 LED mounting cavity dimensions, PVC material composition, and electrical passthrough characteristics.

Q: What does ROHS3 compliance mean for these parts? A: ROHS3 (Restriction of Hazardous Substances Directive 3) compliance indicates these parts meet EU regulations restricting specific hazardous substances. All three substitute options carry identical ROHS3 compliance status.

Q: What does MSL 1 (Moisture Sensitivity Level 1) mean? A: MSL 1 indicates Unlimited moisture sensitivity level, meaning these components have no moisture-related storage or handling restrictions and do not require special drying procedures before assembly.

Q: Are all three parts supplied in the same packaging? A: Yes, all three parts are supplied in Bag packaging format, maintaining consistency in supply chain handling and inventory management.

Q: Can I mix ELM 2-655, ELM 2-665, and ELM 2-17MM in a single assembly? A: Mixing these parts within a single assembly is not recommended unless the PCB design specifically accommodates height variations. Uniform standoff height is standard practice for consistent LED array alignment and optical performance.