LTCC Material Options
Standard, low-k, low-loss, high-strength, high-reflectance, tailored-CTE and high-k project options.
Electronic Materials / LTCC & HTCC
Large-Format LTCC Green Sheets and HTCC Materials
HTK can support LTCC green sheets over 380 mm for large ceramic modules and multilayer projects. The supplied catalog lists capability up to 500 mm square and 55–200 µm green-sheet thickness, subject to grade, tolerance, quantity and application review. In addition to standard white and black systems, project-dependent green, pink, blue, gray and other custom colors can be reviewed together with matching conductor systems.
Large-Format LTCC Capability
LTCC green sheets beyond conventional sizes.
- Highlighted capability
- Over 380 mm
- Catalog maximum
- Up to 500 × 500 mm
- Green-sheet thickness
- 55–200 µm
HTCC Product Examples
HTCC green tape, fired substrates and printed ceramic structures.
GCS-Series LTCC Green Sheets
Preliminary GCS-series model data.
Representative values for preliminary selection.
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| Model | Primary focus | XY shrinkage | Z shrinkage | Dk @ 1 MHz | tanδ @ 1 MHz | CTE | Flexural strength |
|---|---|---|---|---|---|---|---|
| GCS71 | Standard | 13.0 ±0.3% | 28% | 7.1 ±0.2 | <0.003 | 5.3 ppm/°C | 250 MPa |
| GCS74 | Reflective / strong | 13.3 ±0.3% | 29% | 7.4 ±0.2 | <0.003 | 5.7 ppm/°C | 300 MPa |
| GCS79 | High reflectivity | 12.8 ±0.3% | 30% | 7.9 ±0.2 | <0.003 | 4.9 ppm/°C | 210 MPa |
| SK4 | Low dielectric | 14.0 ±0.5% | 28% | 3.9 | <0.001 | 2.0 ppm/°C | 100 MPa |
| Colin | Low dielectric | 13.7 ±0.5% | 32% | 5.1 | <0.003 | 4.7 ppm/°C | 170 MPa |
| BR03 | Low loss | 15.5 ±0.3% | 22% | 6.2 | <0.001 | 6.6 ppm/°C | 150 MPa |
| Alex | Low loss | 12.2 ±0.5% | 20–24% | 6.5 | <0.001 | 8.8 ppm/°C | 150 MPa |
| FT7 | High frequency | 19.0% | 40% | 7.1 | <0.001 | 10.0 ppm/°C | 300 MPa |
| GCSH12 | High CTE | 14.8 ±0.3% | 33% | 6.4 | <0.003 | 12.0 ppm/°C | 240 MPa |
| GCSH13 | High CTE | 12.5% | 25% | 5.9 | <0.003 | 10.7 ppm/°C | 120 MPa |
| GCSH14 | High CTE | 12.6% | 25% | 5.7 | <0.003 | 12.3 ppm/°C | 120 MPa |
| GCS450 | High strength | 13.5 ±0.3% | 30% | 7.8 | <0.003 | 6.2 ppm/°C | 400 MPa |
Product-specific test conditions, processing guidance and guaranteed values can be reviewed with HTK.
HTK-Series LTCC Green Sheets
Eleven additional LTCC grades, including large-format sheet capability.
Large-format options include sheet sizes up to □500 mm and green-sheet thicknesses of 55–200 µm. HTK can support projects requiring LTCC green sheets over 380 mm.
Swipe horizontally to view all specifications.
| Model | Catalog focus | XY shrinkage | XY accuracy | Z shrinkage | Flexural strength | Dk @ 1 MHz | tanδ @ 1 MHz | Dk @ 10 GHz | tanδ @ 10 GHz | CTE | Thermal conductivity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| HTK-071 | Standard dielectric | 13.3% | ±0.3% | 28% | 220 MPa | 7.1 ±0.2 | <0.003 | 6.8 | 0.006 | 5.7 ppm/°C | 2.8 W/m·K |
| HTK-072 | Improved strength | 15.3% | ±0.3% | 26–30% | ≥250 MPa | 7.3 ±0.2 | <0.003 | 6.8 | Not stated | 5.9 ppm/°C | 2.5 W/m·K |
| HTK-025 | High dielectric | 12.8% | ±0.3% | 22–26% | ≥190 MPa | 26 ±1 | <0.003 | 27 | Not stated | 10.7 ppm/°C | 1.7 W/m·K |
| HTK-040 | High dielectric | 15.3% | ±0.3% | 24–30% | ≥170 MPa | 40 ±2 | Not stated | 42 | Not stated | Not stated | Not stated |
| HTK-4D | Low dielectric constant | 19.5% | ±0.5% | 16.5% | 120 MPa | 4.4 ±0.2 | <0.001 | 4.2 | 0.0025 | 4.3 ppm/°C | 1.8 W/m·K |
| HTK-4Y | Catalog grade | 13.7% | ±0.5% | 32% | 130 MPa | 4.0 ±0.2 | <0.003 | 4.0 | 0.0025 | 2.9 ppm/°C | Not stated |
| HTK-6D | Low loss | 15.3% | ±0.3% | 23% | 165 MPa | 6.2 | <0.001 | 6.0 | 0.0004 | 6.7 ppm/°C | Not stated |
| HTK-7KD | High frequency | 21% | ±0.5% | 35% | 290 MPa | 7.2 | <0.001 | 7.4 | 0.002 | 9.5 ppm/°C | 2.3 W/m·K |
| HTK-012 | High CTE | 15.2% | ±0.3% | 35% | 220 MPa | 6.3 | <0.005 | 6.6 | 0.004 | 12.6 ppm/°C | Not stated |
| HTK-014 | Catalog grade | 15.4% | ±0.3% | 26% | 140 MPa | 5.9 | <0.003 | 6.6 | 0.005 | 11.2 ppm/°C | Not stated |
| HTK-78S | High strength | 13.8% | ±0.3% | 29% | 390 MPa | 7.8 | <0.003 | 7.9 | 0.0052 | 6.2 ppm/°C | 4.6 W/m·K |
“Not stated” indicates that no value is shown in the preliminary table. Product-specific conditions and large-format manufacturability can be reviewed with HTK.
HTCC Green-Tape Selection
Compare alumina content, shrinkage, dielectric and thermal performance.
Representative values for preliminary selection.
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| Grade | Material / color | Firing | XY shrinkage | Z shrinkage | Dk | tanδ | Thermal conductivity | Flexural strength |
|---|---|---|---|---|---|---|---|---|
| 90 | 90% Al₂O₃ / black | 1560°C | 14.8 ±0.3% | 24.0 ±0.5% | 8.7 ±0.2 | 0.003 | ≥16 W/m·K | 350 MPa |
| 92 | 92% Al₂O₃ / black | 1560°C | 14.8 ±0.3% | 24.0 ±0.5% | 9.0 ±0.2 | 0.002 | ≥16 W/m·K | 350 MPa |
| 96 | 96% Al₂O₃ / white | 1560°C | 14.8 ±0.3% | 24.0 ±0.5% | 9.4 ±0.2 | 0.0004 | ≥20 W/m·K | 400 MPa |
| 99 | 99.5% Al₂O₃ / white | 1500°C | 16.0 ±0.3% | 24.3 ±0.5% | 9.9 ±0.2 | 0.0002 | ≥26 W/m·K | 500 MPa |
| ACS17 | >97% Al₂O₃ | 1430–1530°C | 13–14% (±0.5%) | 19–23% | 9.3 | Confirm TDS | 36 W/m·K | >380 MPa |
| Hermine | ≥93% ZrO₂ / zirconia series | 1400–1500°C | Not stated | Not stated | 29 | <0.4 ×10⁻⁴ | 3.9 W/m·K | 1000 MPa |
Hermine is a zirconia-series tape. Green-tape options include standard 6 in / 8 in formats and customizable fired thicknesses from 50–500 µm.
Material Families
Coordinate the dielectric, sheet and paste as one system.
HTCC Material Options
Alumina-based green sheets and fired or multilayer project support, with formulation selected around electrical, mechanical and firing requirements.
More Than White and Black
Project-dependent color options can include white, black, green, pink, blue and gray. Formulation, unfired and fired appearance, and final properties are confirmed for each project.
Pastes & Conductors
Via, pattern, conductor and selected resistor paste systems matched to applicable sheet families.
Custom Project Support
Custom design, pilot quantities and lead-free product options.
Sheet and Paste Parameters
Sheet size, thickness, shrinkage, color and physical properties; coating or sheet delivery form; and matching paste can be customized to the application.
Small-Batch Trials
Standard and custom products can support small trial quantities, including projects starting from approximately 10 sheets, before volume production.
Lead-Free Options
Environmentally considerate, lead-free product options are available for selected applications. HTK can coordinate the applicable composition and compliance documents.
HTCC Design & Paste Processing
Representative green-tape, via and printing capabilities.
Representative values for preliminary selection. HTK can coordinate product-specific process and inspection details.
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| Process / item | Representative capability | Material details | Project note |
|---|---|---|---|
| HTCC printed line | 50 µm for Grade 99; 100 µm for Grades 90 / 92 / 96 | Matched conductor system | Confirm artwork and fired geometry |
| Filled via | Minimum 100 µm | Via paste solids >88 wt%; particle size <10 µm | Minimum hole diameter 0.1 mm |
| Pattern printing paste | Print resolution 0.05 mm | Particle size <5 µm; solids 85 ±3 wt%; sheet resistance <15 mΩ/□ | Matched firing profile required |
| Sidewall / via-wall paste | Print resolution 0.1 mm | Solids 80 ±3 wt%; sheet resistance <15 mΩ/□ | Co-fire or post-fire by project |
| Resistor paste | Print resolution 0.1 mm | Co-fire or post-fire options | Resistance range and tolerance by TDS |
| Green-tape format | Standard 6 in / 8 in | Fired thickness 50–500 µm, customizable | Mylar 50 / 125 µm; custom options |
Detailed paste composition, rheology, print thickness, conductor compatibility and process information can be reviewed with HTK.
Large-Format Technical Support
HTK can help narrow large-format LTCC options.
Start with any requirements already known, even if they are incomplete. Our team will help organize the remaining technical points and coordinate suitable grades, manufacturing conditions and available documentation.