LEDs - Spacers, Standoffs

Part Number	Description / PDF	Quantity
ELM 3-905 Califia Lighting (Bivar)	LED MT SR VERT X 0.905" 5MM 3LD	0
ELM 1-850 Califia Lighting (Bivar)	LED MT SR VERT	0
ELM 4-300 Califia Lighting (Bivar)	LED MT SR VERT X 0.300" 3MM 2LD	0
ELM 3-320 Califia Lighting (Bivar)	LED MT SR VERT X 0.320" 5MM 3LD	0
ELM 5-235 Califia Lighting (Bivar)	LED MT SR VERT X 0.235" 3MM 2LD	0
ELM 4-535 Califia Lighting (Bivar)	LED MT SR VERT	0
LTM-400 Califia Lighting (Bivar)	LED MOUNT .400" BLACK	680
ELM 4-775 Califia Lighting (Bivar)	LED MT SR VERT X 0.775" 3MM 2LD	0
705820055 Würth Elektronik Midcom	WA-SLED NYLON 66 UL94 V-2 COLOUR	367
LTM-160 Califia Lighting (Bivar)	LED MOUNT 0.160" BLACK	17
ELM 3-725 Califia Lighting (Bivar)	LED MT SR VERT X 0.725" 5MM 3LD	0
ELM 1-305 Califia Lighting (Bivar)	LED MT SR VERT	0
ELM 1-4MM Califia Lighting (Bivar)	LED MT SR VERT	422
ELM 3-950 Califia Lighting (Bivar)	LED MT SR VERT X 0.950" 5MM 3LD	0
ELM 1-130 Califia Lighting (Bivar)	LED MT SR VERT	0
ELM 5-965 Califia Lighting (Bivar)	LED MT SR VERT X 0.965" 3MM 2LD	0
8926 Keystone Electronics Corp.	SPACER MOUNT LED TRI-LEAD .700"	91261400
ELM 4-855 Califia Lighting (Bivar)	LED MT SR VERT X 0.855" 3MM 2LD	0
ELM 4-410 Califia Lighting (Bivar)	LED MT SR VERT X 0.410" 3MM 2LD	0
705820045 Würth Elektronik Midcom	WA-SLED NYLON 66 UL94 V-2 COLOUR	747

LEDs - Spacers, Standoffs

1. Overview

Spacers and standoffs for LEDs are mechanical components used to create precise spacing, electrical isolation, and structural support in optoelectronic assemblies. These components ensure optimal thermal management, mechanical stability, and electrical safety in LED-based systems. They play a critical role in applications ranging from consumer electronics to industrial lighting, enabling efficient heat dissipation and preventing physical stress on delicate LED packages.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Metal Spacers (Aluminum/Steel)	High thermal conductivity, mechanical strength, and EMI shielding	High-power LED lighting modules, automotive headlights
Plastic Standoffs (Nylon/POM)	Electrical insulation, lightweight, corrosion resistance	LED display panels, consumer electronics enclosures
Ceramic Spacers	High-temperature resistance, excellent dielectric properties	Medical imaging equipment, UV LED systems
Threaded Standoffs	Secure fastening with screw compatibility	Industrial LED luminaires, outdoor signage

3. Structure and Composition

Spacers and standoffs typically feature cylindrical or hexagonal geometries with hollow centers. Common materials include:

Metal alloys (aluminum, stainless steel) with anodized or passivated surfaces
Thermoplastics (nylon 6/6, POM) with glass fiber reinforcement
Technical ceramics (alumina, zirconia) for high-voltage applications

Surface treatments include black oxide coating (metals), UV stabilization (plastics), and precision polishing (ceramics).

4. Key Technical Specifications

Parameter	Significance
Material Thermal Conductivity (W/m K)	Determines heat transfer efficiency (1-200 range based on material)
Dielectric Strength (kV/mm)	Electrical insulation capability (10-30 for plastics, >50 for ceramics)
Operating Temperature Range ( C)	Defines environmental stability (-40 to +150 C typical)
Compressive Strength (MPa)	Mechanical load capacity (50-500 MPa range)
Dimensional Tolerance ( mm)	Assembly precision (typically 0.05-0.1mm)

5. Application Areas

Consumer Electronics: Smartphone flash modules, notebook keyboard backlights
Automotive: Headlight assemblies, interior ambient lighting systems
Industrial: Machine vision systems, high-bay LED lighting
Medical: Endoscopic illumination devices, phototherapy equipment
Outdoor: LED billboards, street lighting infrastructure

6. Leading Manufacturers and Products

Manufacturer	Key Products
TE Connectivity	Aluminum standoffs with hex sockets (10-30mm lengths)
Molex	LCP plastic spacers with 0.5mm pitch for micro-LEDs
3M	Adhesive-backed ceramic standoffs for UV-LED systems
Keystone Electronics	Threaded brass standoffs with captive screws

7. Selection Recommendations

Key considerations include:

Thermal requirements vs. electrical isolation needs
Mechanical load requirements (compression/torsion)
Environmental factors (humidity, UV exposure, vibration)
Assembly methodology (screw mounting vs. snap-fit)
Regulatory compliance (UL, RoHS, REACH)

Example: For outdoor LED displays, select IP67-rated plastic standoffs with UV stabilization and 25mm spacing.

8. Industry Trends

Current developments include:

Miniaturization for micro-LED integration (sub-1mm spacing)
Hybrid materials combining metal cores with polymer coatings
Integrated thermal vias for improved heat spreading
Smart standoff designs with embedded strain sensors
Recyclable polymer composites for sustainable manufacturing