LTM-170 LED Standoff Equivalent & Substitute Parts

Part Overview

The LTM-170 is a T1/T1 3/4 LED standoff manufactured by Bivar Inc., designed for vertical mounting applications with a 0.170" (4.32mm) height. This component is constructed from crystalline polymer material in black color and is actively produced. LED standoffs serve as mechanical supports and alignment fixtures for light-emitting diodes in electronic assemblies, providing precise positioning and thermal management interfaces.

Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part becomes unavailable or when design requirements permit alternative materials meeting the same functional and compliance specifications.

Substiute Parts

LTM-170

Bivar Inc.In Stock: 751LTM-170 Datasheet

Current PartRFQ

705820045

Würth ElektronikIn Stock: 6908705820045 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTM-170 are identified based on strict equivalence across the following critical parameters:

LED Compatibility: Both the main part and substitute must accommodate T1 and T1 3/4 LED packages without modification.

Height Tolerance: The substitute part height of 0.177" (4.50mm) represents a 0.007" (0.18mm) variance from the specified 0.170" (4.32mm). This variance falls within acceptable mechanical tolerance for vertical standoff applications where minor height differences do not compromise PCB assembly fit or LED alignment.

Material Class: Both crystalline polymer and nylon materials are thermoplastic engineering polymers suitable for LED standoff applications. Both materials provide equivalent mechanical support, thermal stability, and chemical resistance for standard electronic assembly environments.

Regulatory Compliance: Both parts maintain ROHS3 compliance and EAR99 export classification, ensuring equivalent regulatory standing for global distribution and use.

Color Consistency: Black coloration is maintained across both parts for visual and optical consistency in assembled products.

The substitute part 705820045 (Würth Elektronik) meets all critical functional and compliance parameters required for direct substitution in applications where the LTM-170 is specified.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (LTM-170): Select when Bivar Inc. supply is available and preferred for design continuity. Active product status ensures ongoing availability and technical support.

Substitute Part (705820045): Select when supply of LTM-170 is constrained or when Würth Elektronik inventory provides cost or lead-time advantages. Both parts carry active product status and equivalent regulatory compliance (ROHS3, EAR99).

Material Consideration: The substitution from crystalline polymer to nylon represents a change in base material. Both materials are established engineering polymers for LED standoff applications. Nylon offers equivalent mechanical support and thermal stability. Selection between materials should be based on specific application requirements regarding chemical exposure or temperature extremes, which are not differentiated in the provided specifications.

Height Variance: The 0.007" (0.18mm) height difference is acceptable for standard PCB assembly applications where LED standoff positioning tolerances typically accommodate ±0.010" (0.25mm) or greater. Verify clearance in applications with tight vertical space constraints.

Frequently Asked Questions (FAQ)

Q: Can 705820045 be used as a direct replacement for LTM-170 in production?

A: Yes. Both parts support T1/T1 3/4 LED packages, maintain black color, achieve ROHS3 compliance, and carry active product status. The 0.007" height difference is within standard mechanical tolerances for LED standoff applications.

Q: What is the significance of the material change from crystalline polymer to nylon?

A: Both materials are thermoplastic engineering polymers suitable for LED standoff mechanical support. Nylon provides equivalent structural performance and thermal stability. Material selection should consider specific environmental exposure (chemical, temperature, humidity) if critical to the application.

Q: Does the MSL rating difference affect substitution?

A: The LTM-170 carries MSL 1 (Unlimited), while 705820045 lists MSL as Not Applicable. This indicates the Würth part has no moisture sensitivity restrictions, which is equivalent to or better than the Bivar part. No additional moisture control measures are required for either part.

Q: Are there any export or regulatory restrictions when substituting these parts?

A: Both parts carry identical ECCN (EAR99) and HTSUS classifications, ensuring equivalent export and tariff treatment. No additional regulatory review is required for substitution.

Q: What inventory levels are available for each part?

A: LTM-170 has 728 pcs in stock; 705820045 has 6,850 pcs in stock. The substitute part offers significantly higher inventory availability for immediate procurement.

Q: Is the height difference of 0.007" critical for my application?

A: For standard PCB assembly with typical LED standoff mounting, this variance is not critical. Verify clearance only in applications with constrained vertical space (less than 0.010" tolerance) or where precise LED positioning is functionally required.