LTM-570 LED Standoff Equivalent & Substitute Parts

Part Overview

The LTM-570 is a T1/T1 3/4 LED standoff manufactured by Bivar Inc., constructed from crystalline polymer material in black color with a 0.570" (14.48mm) length. This component is classified as Active product status and is ROHS3 compliant. LED standoffs serve as mechanical supports and alignment fixtures for light-emitting diodes in electronic assemblies. Substitute parts are identified when inventory constraints, lead time requirements, or design flexibility necessitate alternative sourcing from qualified manufacturers while maintaining functional and mechanical compatibility.

Key Parameters

Parameter	Value	Criticality for Substitution
LED Type	T1, T1 3/4	Critical
Color	Black	Critical
Length	0.570" (14.48mm)	Critical
Material	Crystalline Polymer	Functional
RoHS Status	ROHS3 Compliant	Compliance
Packaging	Bag	Logistical

Substitute Part Grouping Explanation

Substitute parts for the LTM-570 are qualified based on the following criteria:

LED Type Compatibility: All substitute parts support T1 and T1 3/4 LED form factors, ensuring mechanical fit within existing PCB mounting holes and component sockets.

Color Match: All substitutes are black, maintaining visual consistency and light-blocking properties in the assembly.

Length Tolerance: Substitute parts are grouped by length variation within acceptable mechanical tolerances for LED standoff applications:

0.551" (14.00mm) — 705820140
0.571" (14.50mm) — 705820145
0.591" (15.00mm) — 705820150

Material Variation: Substitute parts utilize Nylon 66 (UL94 V-2 rated) instead of crystalline polymer. Both materials provide adequate mechanical support and electrical isolation for LED standoff applications.

Regulatory Compliance: All substitutes maintain ROHS3 compliance and EAR99 export classification, matching the original part's regulatory status.

Parameter Comparison

Manufacturer Part Number	Manufacturer	LED Type	Color	Length	Material	RoHS Status	Product Status	Inventory (Pcs)
LTM-570	Bivar Inc.	T1, T1 3/4	Black	0.570" (14.48mm)	Crystalline Polymer	ROHS3 Compliant	Active	912
705820140	Würth Elektronik	T1, T1 3/4	Black	0.551" (14.00mm)	Nylon 66	ROHS3 Compliant	Active	2530
705820145	Würth Elektronik	T1, T1 3/4	Black	0.571" (14.50mm)	Nylon 66	ROHS3 Compliant	Active	2407
705820150	Würth Elektronik	T1, T1 3/4	Black	0.591" (15.00mm)	Nylon 66	ROHS3 Compliant	Active	1325

Engineering Selection Recommendations

Primary Substitute: 705820145 (Würth Elektronik) provides the closest length match at 0.571" (14.50mm), representing a 0.001" (0.02mm) variance from the LTM-570 specification of 0.570" (14.48mm). This part maintains Active product status and ROHS3 compliance with 2407 units in stock.

Secondary Substitutes: 705820140 and 705820150 are qualified alternatives when length tolerance permits. The 705820140 offers the highest inventory availability at 2530 units with a 0.551" (14.00mm) length. The 705820150 provides extended length at 0.591" (15.00mm) when additional standoff height is acceptable within the assembly design.

Material Consideration: All Würth Elektronik substitutes utilize Nylon 66 (UL94 V-2) instead of crystalline polymer. Both materials satisfy electrical isolation and mechanical support requirements for T1/T1 3/4 LED standoff applications. Material selection should be verified against specific thermal and chemical exposure requirements of the end application.

Compliance Status: All substitute parts maintain ROHS3 compliance and EAR99 export classification, ensuring regulatory equivalence to the original LTM-570 specification.

Frequently Asked Questions (FAQ)

Q: Can 705820145 be used as a direct replacement for LTM-570?

A: Yes. The 705820145 meets all critical substitution parameters: T1/T1 3/4 LED compatibility, black color, ROHS3 compliance, and length specification of 0.571" (14.50mm), which is within acceptable mechanical tolerance of the LTM-570 at 0.570" (14.48mm).

Q: What is the maximum acceptable length variation for LED standoff substitution?

A: Length tolerance depends on the specific PCB design and LED socket clearance. The provided substitutes range from 0.551" to 0.591" (14.00mm to 15.00mm). Design verification is required to confirm that the selected substitute length accommodates the assembly's mechanical constraints.

Q: Are Nylon 66 and crystalline polymer interchangeable in LED standoff applications?

A: Both materials provide adequate electrical isolation and mechanical support for standard LED standoff functions. Material selection should be confirmed against specific thermal cycling, chemical exposure, and mechanical stress requirements of the end application.

Q: What inventory levels are available for each substitute?

A: 705820140 has 2530 units, 705820145 has 2407 units, and 705820150 has 1325 units in stock. The original LTM-570 has 912 units available.

Q: Do all substitute parts maintain the same regulatory compliance as LTM-570?

A: Yes. All substitute parts are ROHS3 compliant and classified as EAR99 for export purposes, matching the original LTM-570 regulatory status.

Q: Is packaging identical across all parts?

A: All parts are supplied in Bag packaging format, maintaining consistent handling and storage requirements.

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