LTCC / HTK-78S
HTK-78S LTCC Material Data and Evaluation
HTK-78S is positioned for projects prioritizing flexural strength. Review the representative values below together with thickness, firing profile, conductor system and shrinkage tolerance before qualification.
HTK-78S
Preliminary selection summary
- Material
- LTCC
- Selection focus
- Projects prioritizing flexural strength
- Data status
- Representative preliminary-selection value
- TDS
- Current controlled version on request
- Website data review
- 2026-09-15
HTK-78S
Representative technical data
Swipe horizontally to view all specifications.
| Property | Value | Condition / status |
|---|---|---|
| Classification | LTCC | Representative preliminary-selection value |
| Feature | High strength | Representative preliminary-selection value |
| XY shrinkage | 13.8% | Representative preliminary-selection value |
| XY accuracy | ±0.3% | Representative preliminary-selection value |
| Z shrinkage | 29% | Representative preliminary-selection value |
| Density | 2.98 g/cm³ | Representative preliminary-selection value |
| Flexural strength | 390 MPa | Representative preliminary-selection value |
| Dielectric constant (1 MHz) | 7.8 | Representative preliminary-selection value |
| tanδ (1 MHz) | <0.003 | Representative preliminary-selection value |
| Dielectric constant (10 GHz) | 7.9 | Representative preliminary-selection value |
| tanδ (10 GHz) | 0.0052 | Representative preliminary-selection value |
| CTE | 6.2 ppm/K | Representative preliminary-selection value |
| Thermal conductivity | 4.6 W/m·K | Representative preliminary-selection value |
| Elastic modulus | 150 GPa | Representative preliminary-selection value |
| Green-sheet thickness | 55–200 µm | Common catalog range |
| Maximum catalog format | Up to □500 mm | Grade, thickness and project review required |
| Firing temperature | Not stated in supplied catalog; confirm current TDS | Confirm by current TDS and process review |
The approved specification, current TDS and agreed test method take priority over website values.
Process review
Check the complete material system, not one number.
Qualification should cover green-sheet condition, printing, via filling, drying, lamination, firing, dimensional compensation and final electrical performance.
- Confirm usable size and fired dimensions
- Confirm conductor and via-paste compatibility
- Run prototype and lot-to-lot verification
- Not represented as a drop-in replacement
FAQ
Questions before qualification
Are the website values guaranteed?
No. They are representative preliminary-selection values. Guaranteed values require a current controlled specification.
Can this grade replace an existing material directly?
A replacement evaluation is required for firing, shrinkage, conductor compatibility, dimensions and finished performance.
What should be sent for a sample review?
Send the target size, thickness, firing profile, frequency, dielectric/loss targets, shrinkage tolerance, conductor and prototype quantity.
Technical validation
Request the controlled TDS and a project-specific review.
HTK coordinates material selection, sample preparation, factory confirmation and quality communication.