LED Lighting Industry – Silicone Product Application Solutions

作者 Gubang | Jul 24, 2026

Scope: Indoor lighting, outdoor lighting, LED drivers, automotive lighting and specialty lighting across the entire value chain

1. LED Lighting Industry Overview

1.1 LED Lighting Industry Development Trends

The global LED lighting market continues to expand, exceeding USD 80 billion in 2025 with penetration surpassing 75%. Driven by China's "dual-carbon" strategy and energy-efficiency regulations worldwide, LED lighting is moving beyond general illumination into smart lighting, human-centric lighting, horticultural lighting, and UV / deep-UV specialty lighting.

As LED technology advances toward higher power density, miniaturization and full-spectrum output, thermal management of optoelectronic devices has become the core bottleneck determining product life and luminous efficacy. Electronic silicone materials play critical roles throughout the LED value chain: heat dissipation, optical coupling, protective sealing and stress buffering.

1.2 Core Value of Electronic Silicones in LED Lighting

Value Dimension

Application

Benefit

Heat Dissipation

LED chip → substrate → heat sink thermal interface

Reduces junction temperature by 15~40℃; every 10℃ reduction doubles service life

Optical Coupling

Optically clear potting compound, optical lens bonding

Improves luminous efficacy by 3~8% by reducing total internal reflection losses

Protective Sealing

Driver potting, luminaire housing sealing

IP67/IP68 waterproofing, 10-year outdoor weather resistance

Stress Buffering

COB module potting, LED filament potting

Protects bond wires; withstands 500 thermal shock cycles

Insulation Protection

1.3 LED Value Chain and Silicone Requirement Mapping

Upstream — Chip Packaging: LED die attach (thermally conductive silver / silicone adhesive) → phosphor coating → lens bonding (optically clear silicone)Midstream — Module Manufacturing: COB module potting → aluminum substrate thermal bonding → luminaire assembly (sealing)Downstream — Driver Power Supply: PCBA conformal coating → component potting → housing sealingEnd Applications: Indoor luminaire heat dissipation → outdoor luminaire waterproofing → automotive lamp temperature resistance

2. Product Portfolio Overview

2.1 Core Product Series

Product Series

Product Name

Typical Model

Key Features

Thermal Grease

LED Thermal Grease

MT-1202/3202/3203/3205

Thermal conductivity 1.0~4.6 W/m·K, low oil bleed, non-slump

Optically Clear Potting Compound

High-Transmittance Silicone Potting Compound

MT-2802

Transmittance >95%, yellowing resistant, 5000h UV resistance

Thermally Conductive Potting Compound

Dedicated Driver Potting Compound

MT-2803/2804/2807/2808

Thermal conductivity 0.5~2.0 W/m·K, UL94 V-0 flame retardant, low-stress

Structural Sealant

Weather-Resistant Silicone Sealant

MT-704A

IP68 waterproof, UV resistant, wide temperature resistance

Thermal Pad

High-Compression Thermal Pad

Soft and compressible, adhesive-backed, 0.5~5mm

Lens Bonding Adhesive

Optical-Grade Clear Adhesive

MT-705B

Refractive index 1.41, high bond strength, low yellowing

2.2 Technical Advantages

Low-oil-bleed thermal grease design: oil bleed <0.5% at 200℃/24h, eliminating optical path contamination

Patented yellowing-resistant clear potting formulation: >92% transmittance retention after 5000h UV aging

Low-stress cure for driver potting compound: modulus as low as 2 MPa, protecting SMD capacitors and ICs

Full range certified to UL, RoHS and REACH; outdoor grades pass 1000h salt spray testing

Customizable color, viscosity, transmittance and cure speed to match different customer processes

3. LED Light Source Module Solutions

Figure 3-1 COB LED Heat Dissipation and Lens Encapsulation Solution

Figure 3-2 LED Driver Heat Dissipation and Outdoor Waterproofing

Thermal management of LED light source modules is decisive for luminous efficacy and service life. Every 10℃ reduction in LED junction temperature roughly doubles lifetime. As the critical interface material between chip and heat sink, thermal grease performance directly determines heat dissipation efficiency.

3.1 COB Module Thermal Solution

Application point: between the back of the COB (Chip-on-Board) module and the heat sinkRecommended product: MT-3205 high thermal conductivity grease

Parameter

MT-3205

Selection Guidance

Thermal Conductivity

4.6 W/m·K

3.0 W/m·K

Choose MT-3205 for high-power COB

Thermal Resistance (@50psi)

0.03 ℃·cm²/W

0.10 ℃·cm²/W

MT-3205 required for low thermal resistance

Applicable Gap

50~150μm

0.5~3mm

Choose TSP for large gaps

Application Method

Screen printing / dispensing

Lamination

Choose MT-3205 for automated lines

Reworkability

Clean and re-apply

Re-applicable

Choose TSP for small batches

Key Process Points:

Degrease and clean the aluminum substrate and heat sink mating surfaces
Apply thermal grease by stencil printing or dispensing robot, controlling thickness at 100~150μm
Secure with screws after assembly; recommended torque 0.3~0.5 N·m
Prevent grease overflow from contaminating the light-emitting area
Verification: use a thermal imager to measure the module-to-heat-sink temperature differential and keep it ≤3℃

3.2 LED Lens Bonding Solution

Application point: fixing and optical coupling between PMMA/PC lenses and the aluminum substrateRecommended product: MT-705B optical-grade clear adhesive

Parameter

MT-705B

Refractive Index

1.41 (matched to silicone)

Transmittance (2mm thickness)	>95%
Viscosity	5000 cP (thixotropic, non-slump)
Hardness (Shore A)	40
Tensile Strength	3.5 MPa
UV Resistance	5000h with no yellowing
CTE	250 ppm/℃ (low-stress)
Cure Schedule	80℃ × 30min or 25℃ × 24h

3.3 SMD/COB Potting Protection Solution

Recommended product: MT-2802 optically clear potting compoundApplications:

Protective potting over the phosphor layer of COB modules
Filament potting for LED filament lamps
Protective potting for UV-LED modulesKey technical specifications:
Transmittance: >95% (400~800nm full visible spectrum)
Temperature range: -50℃ to 200℃, suitable for soldering and long-term operation
Hardness: Shore A 30~50, flexible protection for gold bond wires
UV resistance: no yellowing or chalking after 5000h UV exposure

4. LED Driver Power Supply Solutions

4.1 Driver Potting Solution

Application point: full potting of transformers, inductors, capacitors, ICs and other components inside the LED driverRecommended product: MT-2804 low-stress thermally conductive potting compound

Parameter

MT-2804

Thermal Conductivity

0.8 W/m·K

Flame Rating

UL94 V-0

Mixed Viscosity

2500 cP

Hardness

Shore D 40

Working Time (25℃)

40min

Cure Schedule

24h at room temperature or 80℃ × 1h

Dielectric Strength

20 kV/mm

Temperature Range

-55℃~180℃

Key Potting Process Points:

Ensure the PCBA is clean and dry; watch potting height around sensitive components such as electrolytic capacitors
Position the mold or housing and seal all interfaces
Vacuum mix and degas → pour at low pressure with controlled flow rate to avoid bubbles
Leave 2~3mm clearance between the potting surface and the housing rim
Post-cure electrical test: withstand voltage ≥3kV for 1 min without flashover

4.2 PCBA Conformal Coating Solution

4.3 Supplementary Thermal Pad Solution

5. Outdoor and Specialty Lighting Solutions

5.1 Outdoor Luminaire Housing Sealing Solution

Application points: housing mating surfaces and cable entry holes of street lights, floodlights and tunnel lights

Sealing Location

5.2 Outdoor Driver Potting Solution

Recommended product: MT-2808 high thermal conductivity flame-retardant potting compoundTypical applications:

Outdoor LED drivers rated above 150W
Solar street light controllers
DMX512 sub-controller boxes for architectural lightingKey requirements:
Thermal conductivity ≥1.0 W/m·K
UL94 V-0 flame retardant
Temperature resistance -40℃ to 150℃
IP68 protection
1000h salt spray resistance

5.3 Floodlight Thermal Solution

Application point: gap between SMD/CSP integrated modules and the heat-dissipating housingRecommended product: MT-3205 high thermal conductivity greaseThermal requirements for high-power floodlights (200~1500W):

Thermal conductivity ≥3.0 W/m·K
Thermal resistance ≤0.05 ℃·cm²/W
Low oil bleed, no contamination of the lens area
No dry-out during continuous operation at 150℃

6. Automotive LED Lighting Solutions

6.1 LED Headlamp Thermal Solution

Application point: interface between the PCB back side of high/low beam or matrix modules and the heat sinkRecommended product: MT-3203 high thermal conductivity grease

Parameter

MT-3203

Industry Requirement

Rating

Thermal Conductivity

3.0 W/m·K

≥2.5

Excellent ✓

Thermal Resistance (@100psi)

0.06 ℃·cm²/W

≤0.10

Excellent ✓

Operating Temperature

-55℃~200℃

-40℃~150℃

Ample margin ✓

Oil Bleed (150℃/24h)

<0.3%

≤1.0%

Outstanding ✓

Ionic Content

≤15ppm

≤50ppm

Clean ✓

6.2 LED Driver Module Potting

Recommended product: MT-2804 (automotive grade)Automotive-grade requirements:

AEC-Q reliability testing
Temperature resistance -40℃ to 150℃
Vibration resistance: 20G random vibration for 100h
Flame retardancy: UL94 V-0
Oil resistance: no swelling after 1000h immersion in engine oil / ATF

6.3 Tail Lamp / Ambient Lighting Solution

Application points: LED tail lamp light source modules and light-guide coupling ends of interior ambient lightingRecommended products: MT-705B clear bonding adhesive / MT-2802 optically clear potting compoundKey requirements:

Transmittance >92%
Refractive index 1.4~1.5 matched to light-guide materials
Temperature resistance -40℃ to 130℃
Low shrinkage <0.2%, low yellowing

7. Smart Lighting and Horticultural Lighting Solutions

7.1 Smart Lighting Sensor Modules

7.2 Horticultural Lighting Potting Solution

Recommended product: MT-2804 (UV-resistant grade)Characteristics of horticultural lighting:

High-humidity environment (70~95% RH)
Continuous red and blue light exposure (PAR 500~1000 μmol/m²/s)
Long continuous operation (16~18h per day)
Potting compound must combine UV resistance, UL94 V-0 flame retardancy and high reliabilityThe MT-2804 UV-resistant formulation, combined with MT-704A housing sealant, supports warranties of 3 years or more for horticultural lighting.

8. Selection Guide and Technical Data Comparison

8.1 Quick Selection Matrix

Application Scenario

Primary Requirement

8.2 Thermal Product Quick Reference

LED lighting thermal selection principles: Light source level (chip → substrate): thermal grease MT-3205 (5.0 W/m·K) Module level (substrate → heat sink): thermal grease MT-3203 (3.0 W/m·K) or TSP thermal pad System level (driver → housing): thermally conductive potting compound MT-2804 / MT-2808

9. Competitive Advantages

9.1 Technical Advantages

Low-oil-bleed thermal grease: oil bleed <0.5% at 200℃/24h, eliminating optical contamination

Yellowing-resistant clear compound: patented UV-resistant system, >92% transmittance retention after 5000h

Low-stress potting: elastic modulus 2~5 MPa, no damage to sensitive components

Reworkable conformal coating: peelable silicone coating for easy rework

Wide viscosity customization: from 800 cP (penetrating) to 30000 cP (thixotropic)

9.2 Quality Advantages

Quality Dimension

Industry Standard

Maxtor Control Level

Batch Cpk

≥1.33

≥1.67

Thermal Conductivity Tolerance

±0.2 W/m·K

±0.15 W/m·K

Viscosity Tolerance

±20%

±10%

Transmittance Tolerance

±2%

±1%

Flame Rating

V-0

V-0 (UL Yellow Card maintained)

['Lot number traceability', 'Batch traceability', 'Full retained samples + complete production records']

9.3 Service Advantages

Free samples: trial samples matched to your light source or driver shipped within 24 hours
Photometric test support: before/after luminous flux and efficacy comparison testing on your luminaires
Aging validation: UV and high-temperature aging test reports provided
UL certification support: assistance with all material documentation required for UL certification
VAVE cost reduction: ongoing material cost optimization proposals

10. Representative Case Studies

Case 1: Driver Potting Upgrade for Outdoor LED Floodlights

Customer background:

A top-three domestic outdoor lighting manufacturer, 500W~1500W floodlight series

Requirement:

The potting compound had to deliver IP68 protection, thermal conductivity ≥0.8 W/m·K, and failure-free performance over a 5-year outdoor warranty

Solution:

Custom MT-2808 formulation with viscosity optimized for large-housing potting

Results:

Driver failure return rate reduced from 2.8% to 0.3%
Passed 1000h salt spray and 1000h UV aging tests
Complete luminaire certified to IP68
Annual consumption exceeded 300 tonnes

Case 2: COB Thermal Performance Upgrade for Premium Commercial Lighting

Customer background:

A premium commercial lighting brand, 30W~100W COB spotlights and track lights

Requirement:

Resolve severe lumen depreciation caused by excessive COB junction temperature; a 25℃ reduction was required

Solution:

MT-3205 high thermal conductivity grease replaced the incumbent product, with optimized application thickness

Results:

COB junction temperature reduced by 28℃; lifetime extended from 30,000h to 50,000h
Initial luminous flux increased by 5%
Application yield improved from 92% to 98%
Adopted as the brand's designated thermal solution

Case 3: Thermal Solution for Automotive LED Headlamp Modules

Customer background:

An automotive lighting Tier 1 supplier, matrix LED headlamp modules

Requirement:

The thermal grease had to meet automotive-grade reliability from -40℃ to 150℃ with thermal resistance ≤0.07 ℃·cm²/W

Solution:

MT-3203 automotive-grade thermal grease applied by screen printing

Results:

LED junction temperature reduced by 20℃; luminous flux stability improved by 8%
Passed AEC-Q101 thermal cycling testing
Thermal resistance degradation <3% after 2000h high-temperature aging
Replaced an imported brand with a 35% cost reduction

11. Technical Service System

11.1 Pre-Sales Service

Service Item

Description

Response Time

Technical consultation

Product selection, solution design, thermal simulation

Free samples

Trial samples matched to your light source or driver

Application testing

Trial builds and testing on your luminaires

3 business days

Process package

Complete application process package + SOP

5 business days

On-site visit

Technical exchange and production line review

Within 1 week

11.2 Service During Delivery

On-site support for first mass production: engineers on the floor to ensure a smooth ramp-up
Operator training: standard SOP preparation plus on-site training
Equipment integration: parameter packages for dispensing, potting and coating equipment
Quality documentation: MSDS, TDS, COA, UL reports, RoHS/REACH

11.3 After-Sales Service

Quarterly reviews: quarterly quality visits and joint assessments
Batch traceability: retained samples kept for 5 years with fully traceable production records
Failure analysis: response within 24 hours with an 8D corrective action report
Technology upgrades: regular recommendations of new formulations and cost reduction options

Committed to delivering complete thermal, optical, potting and protection solutions for the LED lighting industry

LED Lighting Industry – Silicone Product Application Solutions

Table of Contents

1. LED Lighting Industry Overview

1.1 LED Lighting Industry Development Trends

1.2 Core Value of Electronic Silicones in LED Lighting

1.3 LED Value Chain and Silicone Requirement Mapping

2. Product Portfolio Overview

2.1 Core Product Series

2.2 Technical Advantages

3. LED Light Source Module Solutions

3.1 COB Module Thermal Solution

4.6 W/m·K

3.0 W/m·K

0.03 ℃·cm²/W

0.10 ℃·cm²/W

3.2 LED Lens Bonding Solution

3.3 SMD/COB Potting Protection Solution

4. LED Driver Power Supply Solutions

4.1 Driver Potting Solution

0.8 W/m·K

4.2 PCBA Conformal Coating Solution

4.3 Supplementary Thermal Pad Solution

5. Outdoor and Specialty Lighting Solutions

5.1 Outdoor Luminaire Housing Sealing Solution

5.2 Outdoor Driver Potting Solution

5.3 Floodlight Thermal Solution

6. Automotive LED Lighting Solutions

6.1 LED Headlamp Thermal Solution

3.0 W/m·K

0.06 ℃·cm²/W

6.2 LED Driver Module Potting

6.3 Tail Lamp / Ambient Lighting Solution

7. Smart Lighting and Horticultural Lighting Solutions

7.1 Smart Lighting Sensor Modules

7.2 Horticultural Lighting Potting Solution

8. Selection Guide and Technical Data Comparison

8.1 Quick Selection Matrix

8.2 Thermal Product Quick Reference

9. Competitive Advantages

9.1 Technical Advantages

9.2 Quality Advantages

9.3 Service Advantages

10. Representative Case Studies

11. Technical Service System

11.1 Pre-Sales Service

11.2 Service During Delivery

11.3 After-Sales Service