FOTURAN® II Photostructurable Glass Wafer

® FOTURAN II is an improved photostructurable glass based Chemical Properties – Glass State on the well-known FOTURAN®. It is produced in a continuous Class melting process with optimal homogeneity. Hydrolytic resistance (μg) 578 HGB 4 acc. to DIN ISO 719 Na O/g FOTURAN® II is a technical, photostructurable glass that crystal- 2 2 lizes after UV exposure and temperature processes. The crys- Acid resistance acc. to DIN 12116 mg/dm 0.48 S 1 tallized areas can be etched with a high aspect ratio, resulting Alkali resistance acc. to DIN ISO 695 mg/dm2 100 A 2 in extremely fine structures and vias. After a second exposure and tempering process, the glass can be transformed into a Mechanical Properties – Glass and Ceramic State glass ceramic. Anodic bonding is possible, too. Glass State Ceramic State*** ceramized ceramized Structured FOTURAN® II substrates can be applied in the semi- at 560 °C at 810 °C conductor chip and semiconductor packaging processes. Density ρ in g /cm³ 2.37 – – The process flow works without photo resist and can be used with standard semiconductor equipment. Knoop hardness HK 0.1/20 480 510 500 Vickers hardness HV 0.2/25 520 560 480 Applications E-Modulus in GPa 76.5 81.2 91.0 • Interposer Poisson number v 0.21 0.19 0.18 • RF / MEMS, Sensor, Advanced Packaging • Micro-Fluidics Thermal Properties – Glass State • Micro-Optics • 3D in-bulk structures Transformation temperature Tg in °C 455 Coefficient of mean linear thermal expansion – 6 – 1 8.49 Standard supply forms α (20 °C; 300 °C) in 10 K (Static measurement) Thermal conductivity in W / (m*K)( = 90 °C) 1.28 Supply form Sizes* λ ϑ Round (wafer) 6" 8" Electrical Properties – Glass and Ceramic State 12" (in preparation) Glass State Ceramic State*** Square (substrate) 93 x 93 mm Frequency 130 x 130 mm [GHz] annealed ceramized ceramized 150 x 150 mm at 40 °C/h at 560 °C at 810 °C 175 x 175 mm 1.1 6.4 5.8 5.4 FOTURAN® II Sample Kit Incl. one 93 x 93 x 0.5 mm 1.9 6.4 5.9 5.5 and one 6" x 0.5 mm wafer Dielectric * Standard thicknesses for each format: 0.5/ 0.7/ 1.0 / 1.3 mm constant 5 6.4 5.8 5.4 (Permittivity) ε Other formats and thicknesses available upon request r 24 – 5.87 5.41 77 – 5.61 5.27 Typical post-processing tolerances** Roughness of the inner surface of the etched 1–3 µm 1.1 84 58 39 structures 1.9 80 65 44 Dissipation Roughness of surface of the non-exposed area < 5 nm factor tan 5 109 79 55 Maximum hole density (holes / cm²) 10,000 δ (* 10 – 4) 24 – 146 105 Tolerance of hole distance (per 100 mm) < ± 0.3 % (100 mm ± 300 µm) 77 – 185 135 ** Values based on SCHOTT standard processing parameters. Above values *** All data subject to change are an indication, not guaranteed limits and may also based on processing parameters. ****  ***  Photostructurable GlassWafer FOTURAN index Refractive 810 °C****) (transmission in%,substratethickness1mm,ceramizedat Transmission forprocessed andunprocessedFOTURAN curves Optical Properties–GlassandCeramicState [in %, 1 mm thickness] transmittance τ(λ) Spectral All datasubjecttochange

Ceramization accordingtoourstandardheatingprotocol Transmission in % 100 20 40 60 80 0 200

NIR range 1 200 ® II Wavelength λinnm Wavelength 656.3 (n 587.6 (n 2200 546.1 (n 486.1 (n (nm) 300 t t t t t t t 350 314 295 280 270 260 250

C d e F IR range ) ) ) ) Ceramized state Glass state 5200 www.us.schott.com/advanced_optics ® II [email protected] Glass State

t 40 °C/h at annealed SCHOTT NorthAmerica,Inc. 1.518 1.549 1.515 1.512 1.510 0.5 0.1 29 11 89 37 3 (transmission in%,substratethickness1mm) Transmission ofunprocessed FOTURAN curve Phone 407-288-7695 Duryea, PADuryea, 18642 Advanced Optics 400 York Avenue

Transmission in % 100 20 40 60 80 0 250

USA

sensitivity Area ofhighestUV ceramized t 560 °C at 1.519 1.515 1.513 1.511 n/a

/ – – – – – – –

absorption Wavelength 300 Ceramic State*** λ in nm ® 350 II ceramized

t 810 °C at 1.532 1.528 1.526 1.523 0.02 0.02 0.01 0.02 0.02 0.01 0.01 n/a

Version April 2017 | SCHOTT Advanced Optics reserves the right to make specification changes in this product flyer without notice.