Hysol MG21F-02 | Black Epoxy Mold Compound
Harmonization Code : 3907.30.00.85 | 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
- Amazing HTRB performance
- Excellent adhesion to Sn, Si and Cu
- Encapsulation of low voltage diodes
Product Description
Hysol MG21F-02 is a high productivity, low cost, epoxy molding compound, designed specifically for high volume encapsulation of low voltage diodes and small signal transistors. It offers excellent reliability & HTRB data and has been used for diode bridge, axial diodes, diode metal electrode leadlesss face (MELF) and other high voltage and discrete semiconductor packages. It offers excellent adhesion to Sn, Si and Cu and amazing HTRB performance.
Hysol MG21F-02 performs very well during high-temperature reverse bias testing for devices running up to 800V and at 150°C. The largest cause of failure of epoxy molding compounds on these devices is the result of gate leakage and then ultimately catastrophic run-away current when tested under bias at temperature. MG21F-02 performs very well under these conditions. The CTI (comparative tracking index) of the MG-21F-02 is 325V.
Hysol MG21F-02 was developed many years ago, but is still one of the best EMC on the market for diodes, bridges and high voltage diodes. Many competitors have tried and failed to compete against this MG21F-02. Those that did manage to meet the same performance targets as the MG21F-02 did so at prices that were nearly twice that of the MG21F-02, leaving this product leading with an excellent price/performance correlation. Typical applications and uses of MG21F-02 include but are not limited to 28, 28 and 56 pin DL TSSOP, SOT, SOIC, PDIP and other power discrete and high voltage semiconductor packages.
We are currently developing the Green version of this product, to ensure it does not contain TBBP-A or antimony trioxide while also maintaining its flame retardant and electrically stable properties. Contact us for more information.
Packaging
TDS, SDS & Technical Documents
- Hysol MG21F-02
- Comparative Tracking Index(CTI) Test Report - MG21F-02
- SDS Hysol_MG 21F-02_EU_EN_2023
- CAPLINQEpoxyMoldCompoundHandlingGuide1
Technical Specifications
General Properties
Electrical Properties
Chemical Properties
Physical Properties
Thermal Properties
Mechanical Properties
Curing Conditions
Additional Information
Comparison of MG21F-02 with new Halogen-Free, Green GR21F-02 formulations
|
MG21F-02 |
GR21F-02 |
GR21F-02F4 |
GR21F-02F4A |
GR21F-02F4B |
||
|---|---|---|---|---|---|---|
|
Formula Enhancement |
Flame Retardant |
TBBP-A & Antimony Trioxide |
Not Contained |
Green Flame Retardant X |
Green Flame Retardant X+ |
Green Flame Retardant X+ |
|
Ion Capture |
Not contained |
Not Contained |
Ion Capture A Ion Capture B |
Ion Capture A Ion Capture B |
Ion Capture A+ |
|
|
Expectation |
Halogen-free |
- |
✓ |
✓ |
✓ |
✓ |
|
UL94 V-0 (1/8 inches) |
✓ |
- |
✓ |
✓ |
✓ |
|
|
Improved Electrical Stability |
✓ |
- |
✓ |
✓ |
✓
|
Comparative Tracking Index
Test method: WI HHE Q A.6-124 (3.0mm Thickness)
| Voltage (V) | # |
Drop To Track |
Oservation |
Average |
|---|---|---|---|---|
|
300 |
1 |
100 |
Eroded |
100
|
| 2 |
100 |
Eroded |
||
|
3 |
100 |
Eroded | ||
| 4 | 100 | Eroded | ||
| 5 | 100 | Eroded | ||
|
350 |
1 |
86 |
Eroded |
48
|
|
2 |
10 |
Flamed |
||
|
325 |
1 |
100 |
Eroded |
100
|
|
2 |
100 |
Eroded |
||
| 3 | 100 | Eroded | ||
| 4 | 100 | Eroded | ||
| 5 | 100 | Eroded |
CTI(V) = 325
Customer reliability tests - Not Hysol Specifications
Diode type: TVS 500V/1,5μA
- Standard Assembly process
- HTRB test / Reliability
- Temperature: 140°C
- Reverse Bias: 375V
- Duration: 24h
|
Compound / Colour Code |
Molding Temperature (°C) |
Transfer Time (sec) |
Curing Time (sec) |
Pre-heating (sec) |
Post-Curing (h) |
|
Product A |
190 |
15 |
110 |
25 (0.4A) |
8 @ 175°C |
|
MG21F-02 |
185 |
25 |
60 |
24 (0.4A) |
6 @ 175°C |
New Green, Halogen-Free Alternative to Hysol MG21F-02
Recently viewed products

Hysol GR640HV-L1 | Black Epoxy Mold Compound
- Improved electrical performance version of GR640HV
- Ideal for TO, SMX and SOT/SOD Packages
- JEDEC 1 260°C capable product

3M™ Hot Melt Adhesive 3762LM
- 100% solids, no VOCs
- Easy to use
- Fast-setting adhesive obtains strength in seconds

PET1S-UT-Clear | 1-mil Clear Polyester (PET) Tape with ultra thin Silicone Adhesive
- 1 mil thick polyester film
- Ultra thin silicone adhesive
- 4200V breakdown voltage