ELM 3-490 LED Standoff Equivalent & Substitute Parts

Part Overview

The ELM 3-490 is a T1 3/4 LED standoff manufactured by Bivar Inc., designed for vertical mounting applications with a 0.490" (12.45mm) length. This component features a black PVC construction and accommodates standard T1 3/4 LED packages. 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 is required due to inventory constraints, design modifications, or application-specific length requirements while maintaining core mechanical and electrical compatibility.

Substiute Parts

ELM 3-490

Bivar Inc.In Stock: 756ELM 3-490 Datasheet

Current PartRFQ

ELM 1-13MM

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

Substitution eligibility for the ELM 3-490 is determined by the following critical parameters:

Primary Compatibility Criteria:

• LED Type: T1 3/4 (all substitutes maintain this specification)
• Mounting Style: Vertical (all substitutes maintain this specification)
• Color: Black (all substitutes maintain this specification)
• RoHS Compliance: ROHS3 Compliant (all substitutes meet or exceed this requirement)

Secondary Variation Parameters:

• Length: Tolerance range 0.490" to 0.510" (12.45mm to 12.95mm)
• Material: PVC or Nylon (both materials provide equivalent mechanical performance for standoff applications)

The three identified substitutes (ELM 3-500, ELM 1-13MM, and H-278C-2) share the core LED type, mounting orientation, and color specification. Variations in length and material are within acceptable ranges for typical LED standoff applications where minor height differences do not compromise circuit board layout or component clearance.

Parameter Comparison

Engineering Selection Recommendations

ELM 3-500 (Preferred Vertical Substitute)

The ELM 3-500 is the primary substitute for the ELM 3-490. Both parts maintain identical LED type (T1 3/4), mounting orientation (vertical), color (black), and material (PVC) specifications. The length difference of 0.010" (0.25mm) represents a minimal variation suitable for most PCB layout applications. Both parts carry ROHS3 compliance and Active product status. The ELM 3-500 offers significantly higher inventory availability (32,418 units versus 729 units), making it the optimal choice when design constraints permit the minor length adjustment.

ELM 1-13MM (Extended Length Vertical Substitute)

The ELM 1-13MM functions as a vertical mounting substitute with a 0.020" (0.50mm) length increase over the ELM 3-490. This part maintains T1 3/4 LED compatibility, black color, and PVC material. The extended length may be advantageous in applications requiring additional standoff height. ROHS3 compliance and Active status are confirmed. Inventory availability is substantial (20,735 units).

H-278C-2 (Material Alternative)

The H-278C-2 provides substitution with a material change from PVC to Nylon while maintaining T1 3/4 LED type, black color, and 0.500" length. This part differs in mounting style (right angle versus vertical), which represents a functional change beyond simple substitution. Use of H-278C-2 requires design verification to confirm right-angle mounting compatibility. ROHS3 compliance is confirmed; MSL rating is Not Applicable due to nylon material properties.

Frequently Asked Questions (FAQ)

Q: Can ELM 3-500 directly replace ELM 3-490 without design modification?

A: The ELM 3-500 is mechanically and electrically compatible with the ELM 3-490 for vertical LED standoff applications. The 0.010" length difference is within typical PCB layout tolerances. No design modification is required for standard applications.

Q: What is the functional difference between the vertical and right-angle mounting styles?

A: Vertical mounting (ELM 3-490, ELM 3-500, ELM 1-13MM) positions the LED perpendicular to the PCB surface. Right-angle mounting (H-278C-2) positions the LED parallel to the PCB surface. These are distinct mechanical configurations requiring different PCB footprints and cannot be interchanged without circuit board redesign.

Q: Are PVC and Nylon materials interchangeable in this application?

A: Both PVC and Nylon provide suitable mechanical properties for LED standoff applications. Material selection depends on specific environmental requirements, temperature range, and chemical exposure. Both materials in these parts are ROHS3 compliant. Verify material compatibility with your application environment before substitution.

Q: What inventory considerations apply to these substitutes?

A: ELM 3-490 has 729 units in stock. ELM 3-500 has 32,418 units, and ELM 1-13MM has 20,735 units available. H-278C-2 has 1,446 units. For high-volume production, ELM 3-500 or ELM 1-13MM offer superior supply continuity.

Q: Do all substitutes maintain the same compliance certifications?

A: All four parts are ROHS3 compliant and carry Active product status. ELM 3-490, ELM 3-500, and ELM 1-13MM have MSL rating of 1 (Unlimited). H-278C-2 has MSL rating listed as Not Applicable due to its nylon material composition.

Q: What is the maximum acceptable length variation for PCB layout compatibility?

A: The three vertical mounting substitutes span 0.490" to 0.510" (12.45mm to 12.95mm), a total range of 0.020" (0.50mm). Standard PCB design practices accommodate this variation. Verify specific clearance requirements for your circuit board assembly.