NTM-440 LED Standoff Equivalent & Substitute Parts

Part Overview

The NTM-440 is a T1/T1 3/4 LED standoff manufactured by Bivar Inc., designed for vertical mounting applications with a 0.440" (11.18mm) length. This component is constructed from black nylon material and is actively produced. LED standoffs serve as mechanical supports and alignment fixtures for light-emitting diodes in electronic assemblies, providing consistent positioning and spacing in circuit board layouts. Substitute parts are identified based on matching electrical and mechanical parameters within acceptable tolerances for this product category.

Key Parameters

Parameter	Value	Significance for Substitution
LED Type	T1, T1 3/4	Determines mechanical compatibility with LED package
Length	0.440" (11.18mm)	Critical for vertical spacing and assembly fit
Material	Nylon	Defines electrical insulation and thermal properties
Color	Black	Optical and aesthetic consistency
RoHS Status	ROHS3 Compliant	Regulatory compliance requirement
HTSUS Code	3926.90.9985	Tariff classification alignment

Substitute Part Grouping Explanation

Substitute parts for the NTM-440 are identified as parametric equivalents based on the following criteria:

Primary Matching Parameters:

LED Type: T1, T1 3/4 (mechanical fit requirement)
Material: Nylon (electrical and thermal properties)
Color: Black (visual consistency)
RoHS Status: ROHS3 Compliant (regulatory alignment)
HTSUS Code: 3926.90.9985 (classification match)

Length Tolerance Consideration: The NTM-440 specifies 0.440" (11.18mm). Substitute parts are grouped within a length range of 0.433" to 0.453" (11.00mm to 11.50mm), representing a tolerance band of ±0.013" (±0.33mm) around the nominal dimension. This tolerance range accommodates standard manufacturing variations while maintaining functional compatibility in vertical mounting applications.

Manufacturer Equivalence: Würth Elektronik parts 705820110 and 705820115 are classified as parametric equivalents, indicating they fulfill the same functional role with compatible mechanical and electrical specifications.

Parameter Comparison

Parameter	NTM-440 (Bivar)	705820110 (Würth)	705820115 (Würth)
Manufacturer	Bivar Inc.	Würth Elektronik	Würth Elektronik
LED Type	T1, T1 3/4	T1, T1 3/4	T1, T1 3/4
Length	0.440" (11.18mm)	0.433" (11.00mm)	0.453" (11.50mm)
Material	Nylon	Nylon 66	Nylon 66
Color	Black	Black	Black
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
HTSUS Code	3926.90.9985	3926.90.9985	3926.90.9985
Packaging	Bag	Bag	Bag

Engineering Selection Recommendations

Primary Selection (NTM-440): The NTM-440 remains the specified component when exact 0.440" (11.18mm) length is required. This part is actively produced by Bivar Inc. and maintains full ROHS3 compliance with unlimited moisture sensitivity rating (MSL 1).

Substitute Selection (705820110): The 705820110 is suitable when a shorter standoff length of 0.433" (11.00mm) is acceptable within assembly tolerances. This Würth Elektronik part is actively produced and ROHS3 compliant. The 0.007" (0.18mm) reduction in length represents a minor dimensional variance within standard manufacturing tolerances for this component category.

Substitute Selection (705820115): The 705820115 is suitable when a longer standoff length of 0.453" (11.50mm) is acceptable within assembly tolerances. This Würth Elektronik part is actively produced and ROHS3 compliant. The 0.013" (0.33mm) increase in length represents the maximum variance within the identified tolerance band.

All three parts share identical LED type compatibility, material composition (nylon), color specification (black), and regulatory compliance status. Selection between these options depends solely on the specific vertical spacing requirement of the target application.

Frequently Asked Questions (FAQ)

Q: Can 705820110 and 705820115 be used interchangeably with NTM-440?

A: These parts are parametric equivalents with compatible LED type (T1/T1 3/4), material (nylon), and color (black) specifications. However, they differ in length. The 705820110 is 0.007" shorter and the 705820115 is 0.013" longer than the NTM-440. Interchangeability depends on whether the assembly design accommodates these length variations.

Q: What is the length tolerance range for these LED standoffs?

A: The identified substitute parts span a length range from 0.433" to 0.453" (11.00mm to 11.50mm), representing a ±0.013" (±0.33mm) tolerance band. The NTM-440 nominal length of 0.440" (11.18mm) falls within the center of this range.

Q: Are all three parts RoHS compliant?

A: Yes. The NTM-440, 705820110, and 705820115 are all ROHS3 compliant, meeting current regulatory requirements for restricted substances in electrical and electronic equipment.

Q: What is the difference between Bivar and Würth Elektronik versions?

A: Both manufacturers produce nylon LED standoffs with identical LED type compatibility and color specifications. The primary differences are length variants and material designation (Würth specifies Nylon 66 with UL94 V-2 rating). All parts are actively produced and maintain equivalent regulatory compliance.

Q: Does packaging differ between these parts?

A: No. All three parts are supplied in bag packaging, maintaining consistent handling and storage requirements.

Q: What does MSL 1 (Unlimited) mean for the NTM-440?

A: MSL 1 indicates unlimited moisture sensitivity level, meaning the component has no moisture absorption restrictions and requires no special storage or handling conditions related to moisture exposure.

Q: Are the Würth parts affected by REACH regulations?

A: No. The 705820110 and 705820115 are classified as REACH Unaffected, indicating they do not contain substances of very high concern (SVHC) requiring REACH compliance documentation.

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