Standard-Size Thin Ceramic Substrates (96% Alumina, 99.7% Alumina, AlN 170 W Aluminum Nitride, Si₃N₄ Silicon Nitride, and Black Alumina)

96% Alumina	99.7% Alumina	ZTA (Zirconia-Toughened Alumina)
Aluminum Nitride AlN 170 W	Zirconia	Silicon Nitride Si₃N₄
Black Alumina

Standard-Size 96% Alumina Thin Substrates

These are thin alumina ceramic substrates manufactured by tape casting.

Size	Thickness
□60mm	0.38t
	0.635t
	2.0t
□100mm	0.17t
□114.3mm	0.25t
	0.38t
	1.0t
□120.65mm	0.635t
190.5×139.7mm	0.38t
	0.5t
	0.635t
	0.76t
	1.0t

We can accommodate orders starting from small quantities. If you require a size smaller than the standard dimensions, we can cut the substrates to your specified size.

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Standard-Size High-Purity 99.7% and 99.9% Alumina Thin Substrates

High-Purity Alumina Ceramic Thin Substrates Manufactured by Press Forming

Size: □50 mm, □100 mm, □150 mm
Thickness: 0.3t (up to □100 mm), 0.5t, 0.635t, and 1.0t
If you require another thickness, please enter the details in the Additional Information field.
Quantity: Available from small quantities
Materials: N-99, N-999, N-999S
Surface Roughness: The standard finish is ground. Mirror polishing is also available; please specify this in the Additional Information field.

High-Purity Alumina Ceramic Substrates Manufactured by Tape Casting

Size: □120
Thickness: 0.25t
Material: N-99.6
Surface Roughness: The standard finish is ground. Mirror polishing is also available; please specify this in the Additional Information field.

We can accommodate small-quantity orders. If you require a size smaller than the standard dimensions, we can cut the substrates to your specified size.

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ZTA (Zirconia-Toughened Alumina)

These are thin ZTA (zirconia-toughened alumina) substrates manufactured by tape casting.

Size

□190 × 138 × 0.32t — Lot of 1,000 pieces
□120 × 112 × 0.36t — Lot of 100 pieces

If you require a size smaller than the standard dimensions, we can cut the substrates to your specified size.

Related Pages

Materials List: “ZTA (Zirconia-Toughened Alumina)”

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Standard-Size AlN 170 W Aluminum Nitride Thin Substrates

These are AlN 170 W aluminum nitride ceramic thin substrates manufactured by tape casting.

Size	Thickness
□50.8mm	0.127t
□50.8mm	0.254t
□114.3mm	0.38t
	0.5t
	0.635t
	1.0t

Thermal Conductivity: 170 W
Quantity: Available from small quantities

We can accommodate small-quantity orders. If you require a size smaller than the standard dimensions, we can cut the substrates to your specified size.

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Standard-Size Thin Zirconia Substrates

These are thin zirconia ceramic substrates manufactured by tape casting.

Size	Thickness
□50mm	0.6t
□50mm	1.0t
□100mm	1.0t

Quantity: Available from small quantities
Material: Zirconia (3Y)
Surface Roughness: Ra < 0.6

We can accommodate small-quantity orders.

Related Pages

Materials List: “Zirconia”

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Standard-Size Si3N4 Silicon Nitride Thin Substrates

These are thin silicon nitride ceramic substrates manufactured by tape casting. As power semiconductors become smaller, lighter, and capable of higher output to support the wider adoption of electric vehicles and clean energy, silicon nitride substrates are attracting attention as alternatives to alumina and aluminum substrates.

Features

High electrical insulation
High heat dissipation achieved through thin-substrate processing

Size: □75 × 0.32

Size: 138 × 190 × 0.32

Size	Thickness
□75	0.32 ±0.03
138×190	0.20 ±0.03
138×190	0.25 ±0.03
138×190	0.32 ±0.03
138×190	1.00 ±0.03
□100	0.25 +0／-0.01

Surface Roughness: Ra ≤ 0.7
Thermal Conductivity (W/m·K): ≥80
The dimensions can be modified by cutting.

The □75 × 0.32t substrate did not break when bent by hand, as shown in the photo.

Properties

Material Name			Silicon Nitride
Nishimura No.			N-SN7
Properties			Si3N4
Bulk Density		g/cm³JIS R1634	3.17
Water Absorption		％ JIS R1634	0
Mechanical Properties	Vickers Hardness	GPa JIS R1610	13
	Flexural Strength	MPa JIS R1601	700
	Compressive Strength	MPa JIS R1608	－
	Young’s Modulus	GPa JIS R1602	310
	Tensile Strength	MPa JIS R 1606	－
	Fracture Toughness	MPa･m^1/2 JIS R1607	6
Electrical Properties	Volume Resistivity	Ω･cm JIS C2141	＞10¹⁴
	Relative Permittivity (1 MHz)	(1MHz) JIS C2141	7.8
	Dielectric Loss Tangent (1 MHz)	10⁻⁴(1MHz) JIS C2141	4
	Dielectric Strength	kV/mm JIS C2141	20
	Te Value	℃	－
Thermal Properties	Coefficient of Thermal Expansion	10-⁶/℃ JIS R1608	2.7(RT-400℃)
Thermal Properties	Thermal Conductivity	W/m･K JIS R1611	80
Main Features			High Thermal Conductivity
Main Applications			—

Related Pages

Materials List: Si3N4 Silicon Nitride Ceramics

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Standard-Size Black Alumina Thin Substrates (Tape-Cast)

These are thin black alumina ceramic substrates manufactured by tape casting.

Size: □114 × 0.635t and □114 × 1.0t
Quantity: From 5 pieces

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