ELM 3-520 LED Standoff Equivalent & Substitute Parts

Part Overview

The ELM 3-520 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 0.520" (13.21mm) length and accommodates standard T1 3/4 LED packages. The part maintains Active product status and is ROHS3 compliant. Substitute parts are identified when design requirements permit variations in standoff length or material composition while maintaining compatibility with T1 3/4 LED form factors and vertical mounting orientation.

Substiute Parts

ELM 3-520

Bivar Inc.In Stock: 861ELM 3-520 Datasheet

Current PartRFQ

ELM 1-13MM

Bivar Inc.In Stock: 20832ELM 1-13MM Datasheet

Parametric EquivalentRFQ

ELM 1-545

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

Parametric EquivalentRFQ

ELM 3-500

Bivar Inc.In Stock: 32512ELM 3-500 Datasheet

Parametric EquivalentRFQ

H-278C-2

Bivar Inc.In Stock: 1462H-278C-2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ELM 3-520 are classified based on the following criteria:

Primary Substitution Parameters:

• LED Type: T1 3/4 (mandatory match)
• Mounting Orientation: Vertical (mandatory match)
• Color: Black (mandatory match)
• RoHS Status: ROHS3 Compliant (mandatory match)

Variable Parameters Allowing Substitution:

• Length: 0.500" to 0.545" (±0.025" tolerance range)
• Material: PVC or Nylon (both acceptable for mechanical standoff function)
• Series: ELM 3 or ELM 1 (both Bivar Inc. LED standoff series)

The ELM 3-520 substitutes are grouped into two categories: same-series alternatives (ELM 3 series with different lengths) and cross-series alternatives (ELM 1 series with compatible dimensions). Material substitution from PVC to Nylon is permitted where mechanical requirements are satisfied.

Parameter Comparison

Engineering Selection Recommendations

ELM 3-500: Direct substitute within the ELM 3 series. Length differential of 0.020" (0.51mm) shorter than ELM 3-520. Maintains identical material (PVC), color, and compliance certifications. Suitable for applications where reduced standoff height is acceptable. Higher inventory availability (32,418 pcs) supports procurement reliability.

ELM 1-13MM: Cross-series substitute from ELM 1 product line. Length of 0.510" (12.95mm) provides 0.010" (0.25mm) shorter profile than ELM 3-520. PVC material and ROHS3 compliance maintained. Highest inventory availability (20,735 pcs) among substitutes. Suitable where series designation is not design-critical.

ELM 1-545: Cross-series substitute with longest profile at 0.545" (13.84mm), providing 0.025" (0.64mm) additional height. PVC material and ROHS3 compliance maintained. Inventory availability of 20,121 pcs. Applicable for designs requiring extended standoff height within tolerance parameters.

H-278C-2: Material variant substitute using Nylon instead of PVC. Length matches ELM 3-500 at 0.500" (12.70mm). ROHS3 compliant with REACH Unaffected status. MSL rating not applicable due to material composition. Lower inventory (1,446 pcs). Suitable for applications where nylon mechanical properties are acceptable and PVC is not required.

All substitutes maintain Active product status and ROHS3 compliance, supporting continued design implementation and regulatory adherence.

Frequently Asked Questions (FAQ)

Q: Can ELM 3-500 be used as a direct replacement for ELM 3-520?

A: ELM 3-500 is a parametric equivalent with identical material (PVC), color (Black), LED type (T1 3/4), and compliance certifications. The length difference of 0.020" (0.51mm) must be evaluated against specific PCB layout and mechanical clearance requirements. Both parts are Active status with ROHS3 compliance.

Q: What is the primary difference between ELM 3 series and ELM 1 series substitutes?

A: Both series are manufactured by Bivar Inc. and share identical LED type (T1 3/4), color (Black), material (PVC), and compliance certifications. The ELM 3 series includes the original ELM 3-520 and ELM 3-500. The ELM 1 series (ELM 1-13MM, ELM 1-545) provides alternative length options. Series designation does not affect mechanical or electrical compatibility for vertical LED mounting applications.

Q: Is H-278C-2 compatible with designs specified for PVC standoffs?

A: H-278C-2 substitutes Nylon material for PVC while maintaining identical length (0.500"), color (Black), LED type (T1 3/4), and vertical mounting orientation. Material compatibility must be confirmed against specific application requirements. Both materials are ROHS3 compliant. The Nylon composition results in MSL rating not applicable, differing from PVC variants.

Q: Which substitute offers the closest length match to ELM 3-520?

A: ELM 1-13MM at 0.510" (12.95mm) provides the closest length match, with a 0.010" (0.25mm) difference from the ELM 3-520 specification of 0.520" (13.21mm). This substitute maintains PVC material, Black color, T1 3/4 LED type, and ROHS3 compliance.

Q: Are all substitutes available in equivalent packaging quantities?

A: All substitutes are supplied in Bag packaging. Inventory levels vary: ELM 3-500 (32,418 pcs), ELM 1-13MM (20,735 pcs), ELM 1-545 (20,121 pcs), and H-278C-2 (1,446 pcs). Procurement planning should account for these availability differences.

Q: What compliance certifications are maintained across all substitutes?

A: All substitute parts maintain ROHS3 compliance. ELM 3-500 and ELM 1-13MM include REACH Unaffected status. H-278C-2 also carries REACH Unaffected designation. MSL rating of 1 (Unlimited) applies to all PVC variants; H-278C-2 Nylon variant has MSL rating not applicable.