ELM 4-140 LED Standoff Equivalent & Substitute Parts

Part Overview

The ELM 4-140 is a T1 LED standoff manufactured by Bivar Inc., designed for vertical mounting applications with a 0.140" (3.56mm) length specification. This component is constructed from black PVC material and accommodates 2-lead configurations. The part maintains Active product status and is ROHS3 compliant, making it suitable for current production environments.

Substitute parts become necessary when the primary part number experiences inventory constraints, extended lead times, or when design specifications allow for dimensional tolerance variations within the ELM 4 series parameters.

Substiute Parts

ELM 4-140

Bivar Inc.In Stock: 738ELM 4-140 Datasheet

Current PartRFQ

ELM 4-145

Bivar Inc.In Stock: 6681ELM 4-145 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution within the ELM 4 series is determined by the following critical parameters:

Fixed Parameters (Non-Substitutable):

• Manufacturer: Bivar Inc.
• Series: ELM 4
• LED Type: T1
• Material: Black PVC
• Lead Configuration: 2LD
• Mounting Style: Vertical (SR VERT)
• RoHS Compliance: ROHS3
• MSL Rating: 1 (Unlimited)

Variable Parameter (Allows Substitution):

• Length: 0.140" to 0.145" (3.56mm to 3.68mm)

The ELM 4-145 qualifies as a parametric equivalent because it maintains identical specifications across all fixed parameters while varying only in length by 0.005" (0.12mm). This dimensional tolerance falls within acceptable mechanical clearance ranges for standard PCB mounting applications.

Parameter Comparison

Engineering Selection Recommendations

ELM 4-140 Selection Criteria:

• Primary choice when exact 0.140" (3.56mm) length specification is required by PCB design
• Recommended for applications with tight vertical clearance constraints
• Current inventory: 670 Pcs

ELM 4-145 Selection Criteria:

• Acceptable substitute when design specifications permit 0.145" (3.68mm) length
• Recommended when ELM 4-140 availability is limited
• Both parts maintain identical ROHS3 compliance and MSL ratings
• Current inventory: 6639 Pcs

Both parts are Active status components from Bivar Inc., ensuring continued manufacturing support and supply chain stability. Selection between these parts should be based solely on PCB mechanical design tolerance for standoff height.

Frequently Asked Questions (FAQ)

Q: Can ELM 4-145 be used as a direct replacement for ELM 4-140?

A: ELM 4-145 is a parametric equivalent when design specifications allow for the 0.005" (0.12mm) length increase. Verify PCB clearance requirements before substitution.

Q: What is the primary difference between these two parts?

A: The only difference is the standoff length: ELM 4-140 measures 0.140" (3.56mm) while ELM 4-145 measures 0.145" (3.68mm). All other specifications including material, LED type, lead configuration, and compliance ratings are identical.

Q: Are both parts ROHS3 compliant?

A: Yes, both ELM 4-140 and ELM 4-145 are ROHS3 compliant with MSL rating of 1 (Unlimited).

Q: What does the "2LD" designation indicate?

A: 2LD indicates a 2-lead configuration, standard for T1 LED standoff components.

Q: Can these parts be used interchangeably in all applications?

A: Interchangeability depends on PCB design specifications. Applications with strict height tolerances require the specific part number. Applications with flexible height specifications within 0.005" (0.12mm) tolerance can use either part.

Q: What is the packaging format for these parts?

A: Both parts are supplied in Bag packaging format.