ELM 4-655 LED Standoff Equivalent & Substitute Parts

Part Overview

The ELM 4-655 is a T1 LED standoff manufactured by Bivar Inc., designed for vertical mounting applications with a 0.655" (16.64mm) length. This component is an active product with full RoHS3 compliance and MSL Level 1 rating, indicating unlimited moisture sensitivity tolerance. Substitute parts are identified when inventory constraints, lead time requirements, or specific application needs necessitate alternative configurations while maintaining functional compatibility within the T1 LED standoff category.

Substiute Parts

ELM 4-655

Bivar Inc.In Stock: 954ELM 4-655 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 eligibility for the ELM 4-655 is determined by the following parameters:

Primary Substitution Criteria:

• LED Type: T1 (fixed requirement)
• Material: PVC (fixed requirement)
• Color: Black (fixed requirement)
• Manufacturer: Bivar Inc. (fixed requirement)
• RoHS Status: ROHS3 Compliant (fixed requirement)
• MSL Rating: 1 (Unlimited) (fixed requirement)

Secondary Substitution Criteria:

• Length tolerance: Mechanical length variations within 0.655" to 0.670" (16.64mm to 17.02mm) are acceptable for T1 LED standoff applications
• Series designation: ELM 2 and ELM 4 series are interchangeable within the T1 standoff category

The identified substitutes maintain all primary criteria while accommodating minor length variations that do not affect functional performance in standard vertical mounting configurations.

Parameter Comparison

Engineering Selection Recommendations

ELM 4-655 Primary Selection: Select the ELM 4-655 when the exact 0.655" (16.64mm) length specification is required for the application. This part maintains active product status with full RoHS3 compliance and adequate inventory availability.

ELM 2-665 Substitute Selection: The ELM 2-665 provides a direct length equivalent at 0.665" (16.89mm), representing a 0.010" (0.25mm) length variance. This substitute is suitable when ELM 4-655 inventory is unavailable. Both parts share identical material, color, LED type, and compliance certifications. Inventory availability is comparable to the primary part.

ELM 2-17MM Substitute Selection: The ELM 2-17MM offers the highest inventory availability at 1815 pieces with a length of 0.670" (17.02mm), representing a 0.015" (0.38mm) length variance from the primary part. This substitute is appropriate for applications where mechanical length tolerance accommodates the extended dimension. All compliance and material specifications remain equivalent.

All three parts are active products manufactured by Bivar Inc. with ROHS3 compliance and MSL Level 1 ratings, ensuring regulatory and environmental compatibility across substitution scenarios.

Frequently Asked Questions (FAQ)

Q: What determines if ELM 2-665 or ELM 2-17MM can substitute for ELM 4-655?

A: Substitution is valid when the application tolerates the length variance. ELM 2-665 adds 0.010" (0.25mm) to the standoff height, while ELM 2-17MM adds 0.015" (0.38mm). All three parts maintain identical LED type (T1), material (PVC), color (Black), and compliance specifications (ROHS3, MSL 1).

Q: Are there any functional differences between the ELM 4 and ELM 2 series?

A: Within the T1 LED standoff category, the ELM 4 and ELM 2 series are functionally equivalent. The series designation reflects product line organization rather than performance differentiation. Both series maintain identical material composition, LED compatibility, and regulatory compliance.

Q: Can I use ELM 2-17MM if my PCB layout requires exact 0.655" spacing?

A: No. The ELM 2-17MM length of 0.670" (17.02mm) exceeds the primary specification by 0.015" (0.38mm). Use this substitute only when the application design accommodates the extended standoff height.

Q: What is the inventory status for each part?

A: ELM 4-655 has 877 pieces in stock, ELM 2-665 has 882 pieces, and ELM 2-17MM has 1815 pieces available. All parts are listed as new original stock.

Q: Do all three parts meet the same environmental and compliance standards?

A: Yes. ELM 4-655, ELM 2-665, and ELM 2-17MM are all ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity ratings. All parts are active products from Bivar Inc. with identical packaging specifications (Bag).

Q: What is the maximum acceptable length variance for substitution?

A: Based on the provided substitute list, length variance up to 0.015" (0.38mm) is acceptable for T1 LED standoff applications within the Bivar Inc. product line. Substitution decisions must account for specific PCB layout and mechanical assembly requirements.