OPTOLINQ TMC-2100| Transparent Mold Compound

Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide

OPTOLINQ TMC-2100| Transparent Mold Compound

Main features

Exceptional moldability with long spiral flow
Low moisture absorption
Excellent reliability

Product Description

OPTOLINQ TMC-2100 is an optically clear epoxy molding compound specifically designed for the encapsulation of optoelectronic devices. With its high spiral flow, it ensures precise and intricate molding.

OPTOLINQ TMC-2100 offers excellent moisture resistance, maintaining performance even in high temperature and humidity conditions. TMC-2100 stands out with its superior moldability and reliability, ensuring good quality and precision in optoelectronic device molding.

OPTOLINQTM TMC-2100IR is an optically clear epoxy molding compound specifically designed for the encapsulation of applications that require infrared transparency. With its large spiral flow, it ensures precise and intricate molding. TMC-2100IR exhibits a low moisture absorption and high moisture resistance maintaining performance in high temperature and humidity conditions. Contact us for custom sizes or other specific requirements.

Key Features

High IR Transparency: Ensures superior infrared light transmission for optimal device performance.
Low Moisture Absorption & Excellent Moisture Resistance: Effectively prevents moisture ingress, safeguarding long-term reliability.
Reliable Under Harsh Conditions: Maintains consistent performance in environments with elevated temperature and humidity.
High Adhesion & Low Stress: Provides strong, durable bonding with minimal internal stress, reducing risk of delamination or cracking.

Typical Applications

Low-Power LED & Emitters
Pulse Oximeter Sensors
Ambient Light Sensors
IR and Near-IR Sensors
Data transmission and industrial fibers.

Versions Available

Standard Low stress optical molding compound - TMC-2100
Increased self-release formulation technology - TMC-2100H
Superior IR optical transparency - TMC-2100IR

Alternative to: XX-8524 Series, XX-824H, XX-330H.

Specifications
Additional Information

Technical Specifications

General Properties

Color

Color
The color

Transparent

Specific Gravity

Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume.

For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.

1.25

Physical Properties

Spiral Flow @ 175°C

80-180 cm

Mechanical Properties

Hardness Hardness Hardness is a dimensionless quantity. There is no direct relationship between measurements in one scale and their equivalent in another scale or another hardness test.
Durometer (Shore D)	>80

Flexural Modulus
Flexural Modulus @ 25°C	3400 N/mm2

Flexural Strength
Flexural Strength @ 25°C Flexural Strength @ 25°C Flexural strength, also known as modulus of rupture, or bend strength, or transverse rupture strength is a material property, defined as the stress in a material just before it yields in a flexure test. This is the flexural strength tested at Room Temperature, 25°C	>110 N/mm2

Thermal Properties

Coefficient of Thermal Expansion (CTE) Coefficient of Thermal Expansion (CTE) CTE (Coefficient of thermal expansion) is a material property that is indicative of the extent to which a material expands with a change in temperature. This can be a change in length, area or volume, depending on the material. Knowing the CTE of the layers is helpful in analyzing stresses that might occur when a system consists of an adhesive plus some other solid component.
Coefficient of Thermal Expansion (CTE) , α1 Coefficient of Thermal Expansion (CTE) , α1 CTE α1 (alpha 1) is the slope of the Coefficient of thermal expansion in a temperature range below the Glass transition temperature (Tg). It explains how much a material will expand until it reaches Tg.	60-100 ppm/°C
Coefficient of Thermal Expansion (CTE), α2 Coefficient of Thermal Expansion (CTE), α2 CTE α2 (alpha 2) is the slope of the Coefficient of thermal expansion in a temperature range above the Glass transition temperature (Tg). It explains the extent to which a material will expand after it passes Tg.	170-210 ppm/°C

Gel Time Gel Time Gel time is the time it takes for a material to reach such a high viscosity (gel like) that it is no longer workable. It is usually measured for different temperature conditions and even though it does not refer to full cure it is advisable to never move or manipulate the material after it reached its gel time since it can lose its desired end properties.
Gel Time @ 160°C / 320°F	35-60 sec

Glass Transition Temperature (Tg)

Glass Transition Temperature (Tg)
The glass transition temperature for organic adhesives is a temperature region where the polymers change from glassy and brittle to soft and rubbery. Increasing the temperature further continues the softening process as the viscosity drops too. Temperatures between the glass transition temperature and below the decomposition point of the adhesive are the best region for bonding.

The glass-transition temperature Tg of a material characterizes the range of temperatures over which this glass transition occurs.

110-130 °C

Curing Conditions

Curing Schedule

Curing Schedule
Curing schedule is the time and temperature required for a mixed material to fully cure. While this applies to materials that cure with heat, there are also other materials that can be cured with UV.

Even though some materials can cure on ambient temperatures, others will require elevated temperature conditions to properly cure.

There are various curing schedules depending on the material type and application. For heat curing, the most common ones are Snap cure, Low temperature cure, Step cure and Staged cure.

Recommended cure type, schedule, time and temperature can always be found on the Technical data sheets.

Preheat Temperature

75-95 °C

Transfer Pressure

30-80 kg/cm2

Additional Information

Property	Value	Unit
Specific gravity	1.20–1.25	–
Hardness at 25 °C	80	Shore D
Gel time at 150 °C	35–60	s
Spiral flow at 150 °C	80–180	cm
Mold shrinkage	1.5	%
Glass transition temperature by TMA	120±10	°C
Coefficient of thermal expansion, α1	60–100	ppm/K
Coefficient of thermal expansion, α2	170–210	ppm/K
Flexural strength	110	MPa
Flexural modulus	2.6–3.4	GPa
Transmittance at 400 nm	>85	%

OPTOLINQ TMC-2100 | Optically Clear Molding Compound

TMC-2100 is developed to exhibit robust optical performance, TMC-2100IR a high IR transparent version designed for applications operating above the visible light spectrum.

OPTOLINQ TMC-2100IR | Optically Clear Molding Compound

TMC-2100IR boasts its blended chemistry system to improve IR transparency through refractive index matching and IR-transparent fillers. The transmittance shown is measured at 2 mm thick sample and will exhibit higher transmittance at a thinner samples and packages.

Inspected specimens are 1 mm thick sample cured in mold for 4 minutes at 150°C and post cured for 4 hours at 150°C.

Inspected specimens are 2 mm thick sample cured in mold for 4 minutes at 150°C and post cured for 4 hours at 150°C.

Featured TMC-2100H Variants: CAPLINQ Product Offerings

TMC-2100H Optically Clear EMC with Filters

OPTOLINQ TMC for Filter Applications

Looking to enhance optical precision and durability in your filter-integrated optoelectronic devices? This short presentation introduces OPTOLINQ’s clear molding compounds specifically designed for high-performance filter applications.

Featuring TMC-2100H, a versatile formulation available in six onset wavelengths (700, 720, 750, 820, 840, and 870 nm), our clear compounds offer exceptional light control, environmental resistance, and long-term optical clarity.

Whether you're fine-tuning signal filtering, improving IR sensitivity, or ensuring high transmission and structural stability, OPTOLINQ compounds are built to perform—clear, consistent, and reliable.

Got questions or need help selecting the right optical grade for your filter applications? Reach out to us!