ELM 3-840 Equivalent & Substitute Parts

Part Overview

The ELM 3-840 is a T1 3/4 LED standoff manufactured by Bivar Inc., featuring a vertical mounting configuration with a 0.840" (21.34mm) length. This component is constructed from black PVC material and is classified as an active product with ROHS3 compliance. The identification of equivalent substitute parts becomes necessary when the primary part number reaches inventory limitations or when procurement lead times require alternative sourcing options while maintaining functional and mechanical compatibility.

Substiute Parts

ELM 3-840

Bivar Inc.In Stock: 781ELM 3-840 Datasheet

Current PartRFQ

ELM 1-820

Bivar Inc.In Stock: 2082ELM 1-820 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ELM 3-840 are qualified based on the following critical parameters: LED type (T1 3/4), mounting configuration (vertical), material composition (black PVC), and RoHS compliance status. The ELM 1-820 satisfies these core functional requirements. The primary mechanical variable is length, which differs by 0.020" (0.51mm) between the main part and the substitute. This dimensional difference represents a tolerance variance of approximately 2.38% and remains within the acceptable range for mechanical compatibility in LED standoff applications where the height differential does not affect the electrical performance or mounting interface of the component.

Parameter Comparison

Engineering Selection Recommendations

Both the ELM 3-840 and ELM 1-820 are active product offerings with ROHS3 compliance certification and MSL 1 rating (unlimited moisture sensitivity protection). Selection between these parts should be based on mechanical space constraints within the target application. The ELM 3-840 provides the specified 0.840" length, while the ELM 1-820 offers a 0.020" shorter profile. Both parts maintain identical electrical characteristics, material composition, mounting configuration, and regulatory compliance status. The availability differential, with ELM 1-820 providing 1,983 pieces in stock compared to 710 pieces for ELM 3-840, may influence procurement decisions when lead time optimization is a secondary priority following mechanical fit verification.

Frequently Asked Questions (FAQ)

Q: Can the ELM 1-820 directly replace the ELM 3-840 in all applications? A: The ELM 1-820 is mechanically compatible with the ELM 3-840 provided the application tolerates a 0.020" (0.51mm) reduction in standoff length. Both components share identical LED type, mounting orientation, material properties, and electrical characteristics. Physical space verification at the PCB assembly level is required before substitution.

Q: What are the key differences between the ELM 3-840 and ELM 1-820? A: The sole mechanical difference is the standoff length: ELM 3-840 measures 0.840" while ELM 1-820 measures 0.820". All other specifications, including LED type (T1 3/4), material (black PVC), mounting configuration (vertical), and regulatory compliance (ROHS3, MSL 1) are identical.

Q: Are both parts compliant with current environmental regulations? A: Both the ELM 3-840 and ELM 1-820 carry ROHS3 compliance certification. Both components are rated MSL 1 (unlimited moisture sensitivity level), indicating no special moisture protection requirements during storage or handling.

Q: What factors should determine which part to select? A: Selection should be based on available physical height in the assembly design. If 0.840" length is required, the ELM 3-840 is the specified choice. If mechanical constraints or cost optimization allows for a 0.020" reduction in height, the ELM 1-820 presents an alternative with higher current inventory availability (1,983 units versus 710 units).

Q: Are there any packaging or ordering considerations? A: Both parts are supplied in bag packaging. Ensure quantity requirements and lead time needs are confirmed with the supplier, as inventory levels may fluctuate independent of product status designation.