Hysol GR15F-MOD2C | Black Epoxy Mold Compound

Harmonization Code : 3907.30.00.90 |   Polyacetals, other polyethers and epoxide resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms : Epoxide resins : Other
Main features
  • Very High Glass Transition Temperature: 236°C
  • Longer spiral flow than MOD2
  • Designed for high voltage, high power discrete packages

Product Description

Hysol GR15F-MOD2C is a black, epoxy-based molding compound designed for high voltage, high temperature semiconductor applications. It has a very high Glass Transition Temperature (Tg) of 236°C and is in use in 2nd generation silicon carbide (SiC) MOSFET of world’s leading manufacturer of Silicon Carbide based diodes for power control and management. This C product is a longer spiral flow version of the MOD2.

Hysol GR15F-MOD2C is the world's first high Tg, "Green" Anhydride. Anhydride-based epoxy has traditionally had a low Tg and contained halogens, making it not environmentally "Green". On the other hand, anhydride chemistries have very good HTRB test results because there is very little ion movement at higher temperatures, the traditional cause of HTRB failures. Hysol's new MG15F-MOD2C is a breakthrough product that offers an incredibly high Tg, and is an environmentally "green" product without any halogens (Bromine, Chlorine) or antimony (Sb).

Hysol GR15F-MOD2C is well suited for SiC devices. Older generation silicon Si MOSFETS operated at (only) 600V. New Silicon Carbide devices operate at 1200V. These new 1200V MOSFETS deliver power density and switching efficiency at half the cost per amp of our previous generation MOSFETs. CREE claims that with this new MOSFET platform, that they already have design wins in multiple segments like solar inverters and uninterruptible power supply (UPS) systems. They continue to say that due to rapid acceptance of this 2nd generation of SiC MOSFETs, CREE is shipping pre-production volumes ahead of schedule and ramping volume production in-line with customer demand.

Hysol GR15F-MOD2C has excellent high temperature reliability bias (HTRB) test results. MG15F-MOD2C Outperforms competition on HSOP “plastic RF module” by passing 1500 cycles -65/+200ºC. Furthermore, it is qualified on TO220 & TO247 packages with large silicon carbide die running up to 1200V at an operation temperature.To add to that, Hysol has more than 12 years experience molding HF RF amplifiers guaranteed for 200°C for continuous operation. 

Product Family
N/A mm
N/A gr
1 kg

Catalog Product

Unlike other products we offer, the products listed on this page cannot currently be ordered directly from the website.

Technical Specifications

General Properties
The color
Filler Content 81.5 %
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.
Shelf Life
Shelf Life
Shelf life is the amount of time after manufacturing that a product is guaranteed to retain its properties.

It differs vastly per product and it is based on temperature and storage conditions.

The properties can be guaranteed for the temperature and time range indicated on the TDS since those are the ones tested to be the best for the product.
Shelf Life @ 5°C 183 days
Physical Properties
Spiral Flow @ 175°C 101.6 cm
Chemical Properties
Ionic Content
Chloride (Cl-)
Chloride (Cl-)
The amount of Chloride (Cl-) ion extracted from the product in parts per million (ppm)
7 ppm
Sodium (Na+)
Sodium (Na+)
The amount of Sodium (Na+) ion extracted from the product in parts per million (ppm)
6 ppm
Moisture absorption 0.54 %
Electrical Properties
Dielectric Constant
Dielectric Constant
Dielectric Constant (k), commonly known as relative permittivity, is a number relating the ability of a material to carry alternating current to the ability of vacuum to carry alternating current.

It determines the ability of an insulator to store electrical energy and is the ratio of electric permeability in vacuum against the electric permeability of a material.

The lower the dielectric constant (κ) and dissipation factor, the less energy is absorbed from an electric field, making it a much better insulator.

It is a dimensionless property that can be affected by various factors such as the
thickness uniformity of a material, insufficient contact between the sample and electrodes, water adsorption and contact resistance.
Dielectric Constant @ 1000 kHz 3.6
Dissipation Factor
Dissipation Factor
Dissipation factor is commonly known as loss tangent or tan delta.

It is a ratio of the loss index and the relative permittivity and it measures the inefficiency of an insulating material to maintain energy (that otherwise dissipates in the form of heat). The lower the factor, the better the insulation.

It is the reciprocal of the quality factor and always refers to a specific temperature and frequency.
Dissipation Factor @ 25°C /1000 kHz 3.44
Volume Resistivity
Volume Resistivity
Volume resistivity, also called volume resistance, bulk resistance or bulk resistivity is a thickness dependent measurement of the resistivity of a material perpendicular to the plane of the surface.
7.3x1016 Ohms⋅cm
Mechanical Properties
Flexural Modulus
Flexural Modulus @ 25°C 18,330 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
104 N/mm2
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.
Hot Hardness, Shore D @ 175°C 85
Molded Shrinkage 0.54 %
Water Extract Data
Water Extract Data
Water Extract Data, 20hrs water boil
pH of extract 5.7
Storage (DMA) Modulus
Storage (DMA) Modulus @ 175°C 14,417 N/mm2
Storage (DMA) Modulus @ 25°C 19,816 N/mm2
Storage (DMA) Modulus @ 260°C 5,664 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.
14 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.
33 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 @ 175°C / 347°F 30 s
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.
237 °C
Thermal Conductivity
Thermal Conductivity
Thermal conductivity describes the ability of a material to conduct heat. It is required by power packages in order to dissipate heat and maintain stable electrical performance.

Thermal conductivity units are [W/(m K)] in the SI system and [Btu/(hr ft °F)] in the Imperial system.
0.8 W/m.K
UL 94 Rating
UL 94 Rating
Flammability rating classification.
It determines how fast a material burns or extinguishes once it is ignited.

HB: slow burning on a horizontal specimen; burning rate less than 76 mm/min for thickness less than 3 mm or burning stops before 100 mm
V-2: burning stops within 30 seconds on a vertical specimen; drips of flaming particles are allowed.
V-1: burning stops within 30 seconds on a vertical specimen; drips of particles allowed as long as they are not inflamed.
V-0: burning stops within 10 seconds on a vertical specimen; drips of particles allowed as long as they are not inflamed.
5VB: burning stops within 60 seconds on a vertical specimen; no drips allowed; plaque specimens may develop a hole.
5VA: burning stops within 60 seconds on a vertical specimen; no drips allowed; plaque specimens may not develop a hole
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.
Curing Time @ 175°C / 347°F (Automold) 50 - 80 s
Curing Time @ 175°C / 347°F (Conventional Mold) 150 - 200 s
Curing Time @ 190°C / 374°F (Automold) 30 - 60
Mold Temperature 175 - 190 °C
Preheat Temperature 80 - 90 °C
Post Mold Cure
Post Mold Cure @ 175°C / 347°F 2 - 6 hrs
Transfer Pressure 40 - 80 kg/cm2
Transfer Time 10 - 20 s

Additional Information

Epoxy molding compounds for Silicon Carbide (SiC) Shottky diodes. 


Where do we go from here?

Do you have any molding compounds that can be used for Space applications and withstand temperatures above 200°C?

There is not much research going on regarding EMC specifically suitable for space applications.

Due to the restriction of the EMC chemistry system itself, they all start to show some extent of properties degradation from 200 ℃. Hysol has done research on innovative resin/hardener types and modifications, but the results are still confidential and could not be shared yet. For example, there is research in china and japan regarding the benzoxazine resin types in the academic institute, but again, not been commercialized yet. Here is a review paper for your reference.  There are some other types of encapsulants such as silicone-based ones that could resist higher temperatures, but they are not suitable for the molding process but for potting. 

The automotive standard is already one of the highest standards in the industry for the encapsulation of consumer electronics. Thus, most of Hysol's product test data on customer application sites are based on that. Those applications do not require consistent above 200-degree operating temperatures so you may need to do some high-temperature storage tests on your own devices to see how it works.

How do you measure temperature stability in EMCs? Is there an industry standard?

There is no specific industry standard for the EMC manufacturing industry like JEDEC. There are still some tests we could do to indicate the temperature stability of an EMC product. Every supplier develops their own methodology based on their understanding of this topic.
The ideal is to test the stability of each property for long hours on your operating temperatures. As you can see, there are several groups of properties to describe an EMC product. The degradation of hygro-thermomechanical, electrical, and chemical properties is what we look into while doing the high-temperature storage tests.
For hygro-thermomechanical and chemical properties measurements, general test methods for polymers are used, like those ASTM ones. But those tests are carried out under different temperature conditions. You will generate some figures as below:
For electrical properties, Hysol uses Dielectric Thermal Analysis (DETA). I will send an introduction slide to you later. Using this method, you could indicate the electrical property stability of an EMC under various high power conditions. Typical data figures are like: 

Hysol GR15F-MOD2C Black is sometimes spelled in slightly different ways including:

  • Hysol MG 15F-MOD2 C
  • Hysol MG15F-MOD2 C
  • Hysol MG 15F-MOD2C
  • Hysol GR15F-MOD2C
  • Hysol GR 15F-MOD2C

Anhydride epoxies tend to stick quite a lot to the mold. It is common to use up to 10 shots of melamine to clean the molding compound residues. Visit our Cleaning and Conditioning category to find the ideal cleaning solution for your process.