MLM1-551 Equivalent & Substitute Parts

Part Overview

The MLM1-551 is a T1/T1 3/4 LED standoff manufactured by Bivar Inc., constructed from black nylon with a length of 0.551" (14.00mm). This component is designed for vertical LED mounting applications requiring mechanical support and alignment. The part maintains Active product status and is RoHS3 compliant with MSL 1 rating, indicating unlimited moisture sensitivity tolerance.

Substitute parts are identified when equivalent mechanical and electrical parameters are maintained across alternative manufacturers. Availability of substitute components ensures design flexibility and supply chain continuity for applications utilizing T1/T1 3/4 LED standoff configurations.

Substiute Parts

MLM1-551

Bivar Inc.In Stock: 881MLM1-551 Datasheet

Current PartRFQ

705820135

Würth ElektronikIn Stock: 1089705820135 Datasheet

Parametric EquivalentRFQ

705820140

Würth ElektronikIn Stock: 2553705820140 Datasheet

Parametric EquivalentRFQ

705820145

Würth ElektronikIn Stock: 2464705820145 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MLM1-551 is determined by strict alignment of the following parameters:

Primary Substitution Criteria:

• LED Type: T1 or T1 3/4 configuration
• Material: Nylon construction
• Color: Black
• RoHS Compliance: ROHS3 Compliant
• Regulatory Classification: EAR99 ECCN and 3926.90.9985 HTSUS code

Secondary Consideration:

• Length tolerance within the T1/T1 3/4 standoff range (0.531" to 0.571")

The MLM1-551 at 0.551" (14.00mm) length establishes the primary reference dimension. Würth Elektronik part 705820140 provides direct dimensional equivalence. Parts 705820135 and 705820145 represent length variants within the acceptable T1/T1 3/4 standoff specification range and maintain all other critical parameters.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent: Würth Elektronik part 705820140 provides dimensional and material equivalence to the MLM1-551, maintaining identical 0.551" (14.00mm) length specification. Both components satisfy ROHS3 compliance and EAR99 regulatory requirements with Active product status.

Length Variant Substitutes: Würth Elektronik parts 705820135 (0.531" / 13.50mm) and 705820145 (0.571" / 14.50mm) maintain material composition, LED type compatibility, and regulatory compliance. These variants accommodate applications where minor length adjustments are acceptable within the T1/T1 3/4 standoff envelope.

Compliance Alignment: All substitute parts maintain ROHS3 compliance status and identical ECCN/HTSUS classifications, ensuring regulatory consistency in design transitions. Würth Elektronik components specify UL94 V-2 nylon material certification, providing documented flame-resistance performance.

Frequently Asked Questions (FAQ)

Q: Can 705820135 or 705820145 be used as direct replacements for MLM1-551?

A: Würth Elektronik 705820140 provides direct dimensional replacement at 0.551" (14.00mm). Parts 705820135 and 705820145 are length variants at 0.531" and 0.571" respectively. Substitution depends on application tolerance for standoff height variation. All three maintain T1/T1 3/4 LED compatibility and nylon material specification.

Q: What parameters determine substitution eligibility?

A: Substitution requires matching LED type (T1/T1 3/4), material (nylon), color (black), and RoHS compliance status. Length variation within the 0.531" to 0.571" range is acceptable for T1/T1 3/4 standoff applications. Regulatory classifications (EAR99, HTSUS 3926.90.9985) must remain consistent.

Q: Are there packaging differences between MLM1-551 and Würth Elektronik substitutes?

A: All parts are supplied in Bag packaging format. Inventory quantities vary: MLM1-551 (776 pcs), 705820140 (2530 pcs), 705820135 (982 pcs), and 705820145 (2407 pcs).

Q: Do substitute parts maintain the same moisture sensitivity rating?

A: MLM1-551 specifies MSL 1 (Unlimited). Würth Elektronik substitutes list MSL as Not Applicable, indicating equivalent or superior moisture tolerance for nylon standoff applications.

Q: What is the material specification difference between MLM1-551 and Würth substitutes?

A: MLM1-551 specifies nylon material. Würth Elektronik parts specify Nylon 66 with UL94 V-2 flame-resistance certification, providing documented material grade and performance characteristics.