ELM 1-555 LED Standoff Equivalent & Substitute Parts

Part Overview

The ELM 1-555 is a T1 3/4 LED standoff manufactured by Bivar Inc., designed for vertical mounting applications. This component features a black PVC construction with a 0.555" (14.10mm) length specification. The part maintains Active product status and is ROHS3 compliant, making it suitable for current production environments. Substitute parts are identified when equivalent functional performance can be achieved within the allowed mechanical and electrical parameter tolerances for LED standoff applications.

Substiute Parts

ELM 1-555

Bivar Inc.In Stock: 729ELM 1-555 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 1-555 is determined by strict adherence to the following parameters:

Critical Matching Parameters:

• Manufacturer: Bivar Inc.
• Series: ELM 1
• LED Type: T1 3/4
• Material: PVC
• Color: Black
• Mounting Style: Vertical
• RoHS Status: ROHS3 Compliant

Allowable Variance:

• Length tolerance: Mechanical length variation within the ELM 1 series design envelope

The ELM 1-545 qualifies as a parametric equivalent because it maintains identical specifications across all critical parameters. The length difference (0.545" versus 0.555") represents a mechanical tolerance variation within the same product series and base product number (ELM1-5), both designed for T1 3/4 LED vertical standoff applications.

Parameter Comparison

Engineering Selection Recommendations

ELM 1-555 Primary Selection: Use the ELM 1-555 when the design specification explicitly requires a 0.555" (14.10mm) standoff length. This part is Active status with full ROHS3 compliance and unlimited moisture sensitivity rating, suitable for standard production applications.

ELM 1-545 Substitute Selection: The ELM 1-545 functions as a direct substitute when mechanical length tolerance of 0.010" (0.26mm) is acceptable within the application design envelope. Both parts share identical electrical and material properties, series designation, and compliance certifications. The ELM 1-545 maintains higher inventory availability (20,121 pcs versus 687 pcs), making it suitable for high-volume production scenarios where the reduced length does not impact circuit board layout or LED positioning requirements.

Compliance Assurance: Both parts maintain ROHS3 compliance and MSL Level 1 rating, eliminating compliance-related substitution barriers. Selection between these parts is purely a mechanical fit determination based on available board space and LED standoff height requirements.

Frequently Asked Questions (FAQ)

Q: Can ELM 1-545 replace ELM 1-555 in all applications?

A: The ELM 1-545 is a parametric equivalent within the allowed mechanical tolerance range. Substitution is valid only when the 0.010" (0.26mm) length reduction does not affect circuit board layout, LED positioning, or clearance requirements. Design verification is necessary to confirm mechanical fit within the specific application.

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

A: Both parts are members of the ELM 1 series with identical base product number ELM1-5. The length variance (0.555" versus 0.545") represents a mechanical design tolerance within the same product family. This variation is standard for T1 3/4 LED standoff applications and does not affect electrical performance or material composition.

Q: Are there any compliance differences between ELM 1-555 and ELM 1-545?

A: No. Both parts carry identical ROHS3 compliance status, MSL Level 1 rating, and packaging specifications. Compliance certifications present no substitution barriers.

Q: Why would I choose ELM 1-545 over ELM 1-555?

A: The ELM 1-545 offers significantly higher inventory availability (20,121 pcs in stock versus 687 pcs). For high-volume production runs where the reduced standoff length is mechanically acceptable, the ELM 1-545 provides supply chain advantages and faster procurement timelines.

Q: Are both parts suitable for new designs?

A: Yes. Both ELM 1-555 and ELM 1-545 maintain Active product status, indicating current manufacturing support and suitability for new production designs. Selection should be based on mechanical fit requirements and supply availability.

Q: What is the packaging format for these parts?

A: Both parts are supplied in Bag packaging, standard for LED standoff components. Packaging format is identical between the main part and substitute.