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NTM-520 LED Standoff Equivalent & Substitute Parts
Part Overview
The NTM-520 is a T1/T1 3/4 LED standoff manufactured by Bivar Inc., designed for vertical mounting applications with a 0.520" (13.21mm) length. This component is constructed from black nylon material and is classified as an active product with ROHS3 compliance. LED standoffs serve as mechanical supports and alignment fixtures for LED components in electronic assemblies. Substitute parts are identified when equivalent functional performance can be achieved through alternative manufacturers or material compositions while maintaining compatibility with the specified LED form factors and mounting requirements.
Substiute Parts
Key Parameters
| Parameter | Value | Significance for Substitution |
|---|---|---|
| LED Type | T1, T1 3/4 | Determines mechanical compatibility with LED component geometry |
| Length | 0.520" (13.21mm) | Critical for PCB standoff height and assembly clearance |
| Color | Black | Optical and aesthetic consistency in assembly |
| Material | Nylon / Crystalline Polymer | Affects mechanical properties and environmental resistance |
| RoHS Status | ROHS3 Compliant | Regulatory requirement for electronic component use |
| Moisture Sensitivity Level | 1 (Unlimited) | Storage and handling requirements |
Substitute Part Grouping Explanation
Substitution eligibility for the NTM-520 is determined by the following criteria:
Primary Compatibility Requirements:
- LED Type: Must support T1 or T1 3/4 LED components
- Color: Black finish required for visual consistency
- RoHS Compliance: ROHS3 Compliant status mandatory
- Length Tolerance: Acceptable within mechanical assembly constraints (0.512" to 0.531" range)
Material Flexibility: Substitutes may utilize either nylon or crystalline polymer materials, as both provide equivalent mechanical support functionality for LED standoff applications. Material selection does not affect electrical performance or primary mechanical compatibility.
Inventory and Availability: Substitute parts are listed based on parametric equivalence and active product status. Inventory levels are provided for procurement planning purposes.
Parameter Comparison
| Parameter | NTM-520 (Bivar) | LTM-520 (Bivar) | 705820130 (Würth) | 705820135 (Würth) |
|---|---|---|---|---|
| Manufacturer | Bivar Inc. | Bivar Inc. | Würth Elektronik | Würth Elektronik |
| LED Type | T1, T1 3/4 | T1, T1 3/4 | T1, T1 3/4 | T1, T1 3/4 |
| Length | 0.520" (13.21mm) | 0.520" (13.21mm) | 0.512" (13.00mm) | 0.531" (13.50mm) |
| Color | Black | Black | Black | Black |
| Material | Nylon | Crystalline Polymer | Nylon | Nylon |
| Product Status | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Packaging | Bag | Bag | Bag | Bag |
| Current Inventory | 951 Pcs | 60,748 Pcs | 3,297 Pcs | 982 Pcs |
Engineering Selection Recommendations
Primary Substitute - LTM-520 (Bivar Inc.): The LTM-520 provides exact dimensional equivalence to the NTM-520 with identical 0.520" length specification. Both components are manufactured by Bivar Inc. and maintain ROHS3 compliance. The material difference (crystalline polymer versus nylon) does not affect mechanical compatibility with T1/T1 3/4 LED components. This substitute is recommended for direct replacement applications where Bivar sourcing is preferred or when crystalline polymer material properties are acceptable.
Secondary Substitutes - Würth Elektronik 705820130 and 705820135: Both Würth Elektronik parts maintain T1/T1 3/4 LED compatibility and ROHS3 compliance. Length variations (0.512" and 0.531" respectively) represent ±0.009" deviation from the NTM-520 specification. These substitutes are suitable for applications where minor height variations do not impact PCB assembly clearance or LED alignment requirements. Würth Elektronik components provide alternative sourcing options with established REACH compliance documentation.
Compliance Verification: All listed substitutes maintain active product status and ROHS3 regulatory compliance. Selection should be based on availability, supply chain requirements, and mechanical assembly constraints specific to the end application.
Frequently Asked Questions (FAQ)
Q: Can the LTM-520 be used as a direct replacement for the NTM-520?
A: Yes. The LTM-520 provides identical dimensional specifications (0.520" length) and supports the same T1/T1 3/4 LED types. Both components are ROHS3 compliant and packaged in bags. The material difference (crystalline polymer versus nylon) does not affect mechanical compatibility or functional performance in LED standoff applications.
Q: What is the significance of the length variation in Würth Elektronik parts?
A: The 705820130 measures 0.512" (13.00mm) and the 705820135 measures 0.531" (13.50mm), compared to the NTM-520 at 0.520" (13.21mm). These variations represent ±0.009" tolerance. Substitution suitability depends on PCB assembly clearance requirements and LED alignment specifications in the target application. Mechanical assembly constraints must be evaluated before selection.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. The NTM-520, LTM-520, 705820130, and 705820135 are all ROHS3 compliant. This regulatory status is consistent across all listed alternatives.
Q: What material options are available among the substitutes?
A: The NTM-520 and Würth Elektronik parts (705820130, 705820135) utilize nylon material. The LTM-520 uses crystalline polymer. Both material types provide equivalent mechanical support for T1/T1 3/4 LED components. Material selection should be based on environmental exposure requirements and mechanical property specifications for the specific assembly application.
Q: How do inventory levels affect part selection?
A: Current inventory for the NTM-520 is 951 pieces. The LTM-520 has significantly higher availability at 60,748 pieces, making it suitable for high-volume procurement. Würth Elektronik alternatives offer 3,297 pieces (705820130) and 982 pieces (705820135). Inventory levels should be considered in conjunction with supply chain lead times and production scheduling requirements.
Q: Are there any moisture sensitivity considerations for these parts?
A: The NTM-520 and LTM-520 are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The Würth Elektronik parts list MSL as Not Applicable. All components can be stored and handled under standard industrial conditions without special moisture control measures.
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