LTM-420 Equivalent & Substitute Parts

Part Overview

The LTM-420 is a T1/T1 3/4 LED standoff manufactured by Bivar Inc., constructed from crystalline polymer with a black finish and 0.420" (10.67mm) length. This product is in active status and ROHS3 compliant. Alternative models are identified when inventory constraints exist, when specific material properties are required for application conditions, or when mechanical tolerance specifications demand parts with different length dimensions to accommodate varying PCB mounting heights or LED component spacing requirements.

Substiute Parts

LTM-420

Bivar Inc.In Stock: 1193LTM-420 Datasheet

Current PartRFQ

705820105

Würth ElektronikIn Stock: 2361705820105 Datasheet

Parametric EquivalentRFQ

705820110

Würth ElektronikIn Stock: 5352705820110 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTM-420 are qualified based on the following compatibility criteria:

Critical Matching Parameters:

• LED Type: T1, T1 3/4 (must match)
• Color: Black (must match)
• RoHS Compliance: ROHS3 Compliant (must match)
• Regulatory Classification: ECCN EAR99, HTSUS 3926.90.9985 (must match)
• Packaging Format: Bag (must match)

Allowable Parameter Variations:

• Length: Mechanical dimension tolerance permits variation within 0.413" to 0.433" (10.50mm to 11.00mm) range
• Material: Substitution permitted between crystalline polymer and nylon materials when both maintain electrical and mechanical functionality for T1/T1 3/4 LED standoff applications
• Moisture Sensitivity Level: Variation from MSL 1 to Not Applicable is permitted based on material composition

The identified substitute parts (705820105 and 705820110) meet all critical matching parameters while maintaining functional equivalence through allowable material and length variations.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status with ROHS3 compliance and identical regulatory classification (EAR99, HTSUS 3926.90.9985). The LTM-420 and both Würth Elektronik substitutes are functionally equivalent for T1/T1 3/4 LED standoff applications within black color specifications.

Selection between these parts is determined by:

1. Length Requirement: Choose 705820105 (0.413", 10.50mm) for applications requiring minimum profile, LTM-420 (0.420", 10.67mm) for nominal spacing, or 705820110 (0.433", 11.00mm) for maximum height accommodation.

2. Material Specification: Select based on application thermal and chemical resistance requirements, as crystalline polymer (LTM-420) and nylon (705820105, 705820110) have different material property profiles.

3. Inventory Availability: LTM-420 has 1,141 pieces in stock, 705820105 has 2,331 pieces in stock, and 705820110 has 5,318 pieces in stock.

Frequently Asked Questions (FAQ)

Q: Are the Würth Elektronik parts (705820105, 705820110) direct drop-in replacements for the LTM-420?

A: These parts are functionally equivalent for T1/T1 3/4 LED standoff applications with identical color (black), RoHS compliance, and regulatory classification. Length variations (0.413" vs. 0.420" vs. 0.433") and material differences (nylon vs. crystalline polymer) must be evaluated against specific mechanical mounting requirements and environmental conditions of your application.

Q: What is the significance of the 0.413" to 0.433" length range for substitution?

A: LED standoff length directly affects PCB-to-LED spacing and mechanical clearance. The allowable range of ±0.013" from nominal accommodates typical mounting tolerance stacks in LED assembly applications while maintaining functional electrical and mechanical performance.

Q: Do the nylon substitute parts (705820105, 705820110) have different environmental performance compared to the LTM-420 crystalline polymer?

A: Material composition differs between crystalline polymer and nylon. Nylon parts are classified as UL94 V-2 rated and REACH Unaffected. Application-specific environmental conditions (temperature extremes, chemical exposure, humidity) determine whether material substitution is appropriate.

Q: Are all parts packaged identically?

A: Yes, all parts (LTM-420, 705820105, 705820110) are supplied in Bag packaging format with identical ECCN and HTSUS classification, ensuring consistent procurement and logistics processing.

Q: Which substitute part should be selected if length is not a constraint?

A: Both 705820105 and 705820110 are qualified substitutes. Selection is determined by material requirements and inventory availability. Part 705820110 has significantly higher stock levels (5,318 pieces) compared to 705820105 (2,331 pieces).