ELM 4-945 LED Standoff Equivalent & Substitute Parts

Part Overview

The ELM 4-945 is a T1 LED standoff manufactured by Bivar Inc., designed for vertical mounting applications with a 0.945" (24.00mm) length. This component is classified as an active product and is ROHS3 compliant. LED standoffs serve as mechanical and electrical interfaces for T1 LED assemblies in circuit board applications. Substitute parts are identified when inventory constraints, lead time requirements, or design flexibility necessitate alternative components that maintain functional compatibility within specified parameter tolerances.

Substiute Parts

ELM 4-945

Bivar Inc.In Stock: 1185ELM 4-945 Datasheet

Current PartRFQ

ELM 5-23MM

Bivar Inc.In Stock: 7185ELM 5-23MM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELM 4-945 is determined by strict parameter matching across the following criteria:

Primary Compatibility Parameters:

• LED Type: Must be T1 (identical mechanical interface)
• Material: Must be PVC (equivalent mechanical and environmental properties)
• Mounting Orientation: Must be vertical (SR VERT configuration)
• Color: Must be Black (functional equivalence)
• RoHS Status: Must be ROHS3 Compliant (regulatory requirement)
• MSL Rating: Must be 1 (Unlimited) or equivalent

Secondary Tolerance Parameter:

• Length: Allowable variance within 0.945" ± tolerance for mechanical fit in PCB standoff applications

The ELM 5-23MM meets all primary compatibility parameters. The length specification of 0.910" (23.11mm) represents a 0.035" (0.89mm) reduction from the main part, which falls within acceptable mechanical tolerance for vertical LED standoff applications where precise height matching is not a critical design constraint.

Parameter Comparison

Engineering Selection Recommendations

ELM 4-945 Selection Criteria:

• Primary choice when exact 0.945" (24.00mm) standoff height is required
• Preferred for applications with tight vertical clearance specifications
• Current inventory: 1128 pieces

ELM 5-23MM Selection Criteria:

• Acceptable substitute when 0.035" (0.89mm) height reduction is within design tolerance
• Suitable for applications where standoff height variance does not impact component clearance or electrical performance
• Higher inventory availability: 7087 pieces
• Both parts maintain identical RoHS3 compliance and MSL ratings

Both parts are active products from the same manufacturer with equivalent regulatory certifications. Selection between these parts depends solely on mechanical height requirements within the specific PCB assembly design.

Frequently Asked Questions (FAQ)

Q: Can ELM 5-23MM be used as a direct replacement for ELM 4-945?

A: ELM 5-23MM is a compatible substitute when the 0.035" (0.89mm) reduction in standoff height does not violate PCB design constraints or component clearance requirements. Both parts are T1 LED standoffs with identical material, color, mounting orientation, and regulatory compliance.

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

A: The ELM 4-945 provides 0.945" (24.00mm) of vertical standoff height, while the ELM 5-23MM provides 0.910" (23.11mm). This 0.035" variance affects the vertical distance between the PCB surface and the LED component. Applications with strict height specifications must use the ELM 4-945; applications with flexible height tolerance can use either part.

Q: Are both parts RoHS3 compliant?

A: Yes. Both ELM 4-945 and ELM 5-23MM are ROHS3 compliant and carry identical MSL ratings of 1 (Unlimited), meeting all regulatory requirements for equivalent substitution.

Q: What packaging format is used for both parts?

A: Both parts are supplied in Bag packaging format, suitable for standard component handling and storage procedures.

Q: Do these parts share the same base product number?

A: No. ELM 4-945 uses base product number ELM4-9, while ELM 5-23MM uses base product number ELM5-2. These designations reflect the different series classifications within the Bivar Inc. product line, though both parts maintain functional compatibility for T1 LED standoff applications.