ELM 4-660 LED Standoff Equivalent & Substitute Parts

Part Overview

The ELM 4-660 is a T1 LED standoff manufactured by Bivar Inc., designed for vertical mounting applications with a 0.660" (16.76mm) 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 equivalent electrical and mechanical parameters align with the main part specifications, enabling direct replacement in compatible circuit designs and PCB layouts.

Substiute Parts

ELM 4-660

Bivar Inc.In Stock: 1239ELM 4-660 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

Substitute parts for the ELM 4-660 are qualified based on the following critical parameters:

Primary Substitution Criteria:

• LED Type: T1 (must match)
• Material: Black PVC (must match)
• Mounting Style: Vertical Surface Mount (must match)
• Lead Count: 2 Leads (must match)
• RoHS3 Compliance: Required
• MSL Level 1: Required

Length Tolerance Consideration: The ELM 4-660 operates at 0.660" (16.76mm). Substitute parts with lengths within the mechanical tolerance range of this specification are classified as parametric equivalents. The ELM 2-665 at 0.665" (16.89mm) and ELM 2-17MM at 0.670" (17.02mm) represent acceptable length variations for vertical standoff applications where minor dimensional differences do not affect circuit performance or PCB layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (ELM 4-660): Use the ELM 4-660 when the exact 0.660" (16.76mm) standoff height is specified in the circuit design or PCB layout. This part is actively manufactured with confirmed inventory availability of 1187 pieces.

Secondary Selection (ELM 2-665): The ELM 2-665 operates at 0.665" (16.89mm), representing a +0.005" (0.13mm) length increase. This substitute is suitable when minor height variations are acceptable within the mechanical tolerance of the application. Inventory availability is 882 pieces.

Tertiary Selection (ELM 2-17MM): The ELM 2-17MM operates at 0.670" (17.02mm), representing a +0.010" (0.26mm) length increase. This substitute is applicable when the application design permits the maximum allowable height variation. Inventory availability is 1815 pieces, the highest among all three options.

All three parts maintain identical electrical characteristics, RoHS3 compliance, MSL Level 1 rating, and active product status. Selection should be based on PCB layout requirements and mechanical clearance specifications.

Frequently Asked Questions (FAQ)

Q: Can ELM 2-665 and ELM 2-17MM be used interchangeably with ELM 4-660?

A: Yes, within mechanical tolerance constraints. All three parts share identical LED type (T1), material (Black PVC), mounting style (vertical surface mount), lead count (2), and compliance ratings (RoHS3, MSL 1). The length differences of +0.005" and +0.010" respectively must be evaluated against specific PCB layout and clearance requirements.

Q: What is the maximum length variation among these substitute parts?

A: The ELM 4-660 measures 0.660" (16.76mm). The ELM 2-17MM at 0.670" (17.02mm) represents the maximum length in this substitute group, a difference of 0.010" (0.26mm). The ELM 2-665 at 0.665" (16.89mm) falls between these values.

Q: Are all substitute parts manufactured by the same company?

A: Yes. ELM 4-660, ELM 2-665, and ELM 2-17MM are all manufactured by Bivar Inc., ensuring consistent quality standards and material specifications.

Q: Do substitute parts have different RoHS or MSL ratings?

A: No. All three parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) rating, indicating identical environmental and moisture sensitivity specifications.

Q: Which substitute part has the best inventory availability?

A: The ELM 2-17MM has the highest inventory level at 1815 pieces, followed by ELM 4-660 at 1187 pieces, and ELM 2-665 at 882 pieces.

Q: Can length differences affect circuit performance?

A: Length differences among these parts affect only mechanical positioning and PCB clearance. Electrical performance remains identical across all three parts due to matching LED type, material, and lead configuration.