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SLM-590 LED Standoff Equivalent & Substitute Parts
Part Overview
The SLM-590 is a T1/T1 3/4 LED standoff manufactured by Bivar Inc., constructed from black nylon with a length of 0.590" (14.99mm). This component is classified as an active product 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 supply chain disruptions necessitate alternative sourcing while maintaining functional and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value | Criticality for Substitution |
|---|---|---|
| LED Type | T1, T1 3/4 | Critical |
| Material | Nylon | Critical |
| Color | Black | Critical |
| Length | 0.590" (14.99mm) | Critical |
| Packaging | Bag | Non-Critical |
| RoHS Status | ROHS3 Compliant | Critical |
| Product Status | Active | Critical |
Substitute Part Grouping Explanation
Substitute parts for the SLM-590 are qualified based on the following parameters:
Critical Matching Parameters:
- LED Type: T1, T1 3/4 (mechanical fit requirement)
- Material: Nylon (chemical and thermal properties)
- Color: Black (visual and functional specification)
- RoHS Compliance: ROHS3 Compliant (regulatory requirement)
- Product Status: Active (ongoing availability)
Allowable Variance:
- Length: ±0.021" (±0.51mm) tolerance permitted for mechanical compatibility in standard PCB mounting applications
The three qualified substitute parts (705820145, 705820150, 705820155) are manufactured by Würth Elektronik and meet all critical parameters. Length variations fall within acceptable mechanical tolerances for LED standoff applications.
Parameter Comparison
| Parameter | SLM-590 (Bivar) | 705820145 (Würth) | 705820150 (Würth) | 705820155 (Würth) |
|---|---|---|---|---|
| LED Type | T1, T1 3/4 | T1, T1 3/4 | T1, T1 3/4 | T1, T1 3/4 |
| Material | Nylon | Nylon 66 | Nylon 66 | Nylon 66 |
| Color | Black | Black | Black | Black |
| Length | 0.590" (14.99mm) | 0.571" (14.50mm) | 0.591" (15.00mm) | 0.610" (15.50mm) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active | Active | Active |
| Packaging | Bag | Bag | Bag | Bag |
Engineering Selection Recommendations
Primary Substitute: 705820150 (Würth Elektronik)
The 705820150 is the closest parametric match with a length of 0.591" (15.00mm), representing a variance of +0.001" (+0.01mm) from the SLM-590 specification. This part maintains full ROHS3 compliance, active product status, and identical LED type and material specifications. Würth Elektronik's nylon 66 formulation with UL94 V-2 rating provides equivalent mechanical and thermal performance.
Secondary Substitutes: 705820145 and 705820155
Both parts meet all critical parameters with length variations of -0.019" (-0.49mm) and +0.020" (+0.51mm) respectively. These variations remain within standard mechanical tolerances for LED standoff mounting. Selection between these alternatives depends on specific PCB layout requirements and available inventory.
All three substitute parts carry ROHS3 compliance and active product status, ensuring regulatory conformance and continued supply availability.
Frequently Asked Questions (FAQ)
Q: What is the maximum allowable length variance for LED standoff substitution?
A: For T1/T1 3/4 LED standoffs in standard PCB applications, length tolerances of ±0.021" (±0.51mm) are acceptable. The SLM-590 reference length is 0.590" (14.99mm). Substitute parts range from 0.571" to 0.610", all within this tolerance band.
Q: Are Würth Elektronik 705820 series parts direct mechanical replacements?
A: Yes. All three Würth parts (705820145, 705820150, 705820155) are mechanically compatible with the SLM-590 for T1/T1 3/4 LED mounting. Nylon 66 material with UL94 V-2 rating provides equivalent performance to standard nylon formulations.
Q: Does RoHS3 compliance apply to all substitute parts?
A: Confirmed. The SLM-590 and all three substitute parts (705820145, 705820150, 705820155) are ROHS3 compliant, meeting current regulatory requirements for electronic component manufacturing.
Q: What is the difference between the three Würth substitute options?
A: The three parts differ only in length specification: 705820145 (0.571"), 705820150 (0.591"), and 705820155 (0.610"). All other parameters—LED type, material, color, compliance, and product status—are identical. Selection depends on PCB design requirements and available inventory.
Q: Are packaging formats identical across all parts?
A: Yes. The SLM-590 and all substitute parts are supplied in bag packaging, eliminating packaging-related compatibility concerns.
Q: Can these parts be used interchangeably in existing designs?
A: Interchangeability depends on PCB layout tolerances and mechanical clearance specifications. The length variance between parts (0.039" maximum spread) must be evaluated against specific design constraints. Consult design documentation for allowable standoff height ranges.
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