Creation and Challenge

Resistor Ceramics

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Long experience in extrusion forming process with various kind materials realizes the supply of high quality product for resistor application.
Surface polishing or treatment, etc. are available upon request.

Standard diemnsion and shape

Material	Alumina				Corundum-mullite
Product code number	A-98	A-3	A-85	A-80	N-12	NK-3
Chemical analysis	Al₂O₃ 98%	Al₂O₃ 93%	Al₂O₃ 85%	Al₂O₃ 80%	Al₂O₃-3Al₂O₃*2SiO₂
Dimension Outer Diameter (x Inner Diameter) x Length (mm)	0.6(x0.2)x2 0.4(x0.2)x2 etc	1x3.1, 1.3x2.7, 1.7x5.2 or 5.5, 2 or 2.5x8, 3 or 3.5x10 or 11, 4 or 4.5x14, 7x23 or 51 However A-3 products are under 4.5mm about diameter.
Standard shape	Pipe	Column （Pipe is also availabe.)

Specifications::

Material		Unit	Alumina						Corundum-mullite
Products code number		-	A-98	A-96	AR-96	A-3	A-85	A-80	NK-3
Chemical analysis		-	Al₂O₃ 98%	Al₂O₃96%		Al₂O₃ 93%	Al₂O₃ 85%	Al₂O₃ 80%	Al₂O₃-3Al₂O₃*2SiO₂
Color		-	White
Important applications		-	Sensar	Film resistors,insutation parts
Apparent specific gravity		g/cm³	3.80	3.70		3.60	3.50	3.45	3.30
Water absorption		%	＜0.01
Flexual strength		Mpa	340	320		290	260	190	170
Thermal expansion	25-500℃	×10⁶/K	7.1				6.8	6.6	5.9
	25-800℃	×10⁶/K	7.8				7.5	7.4	6.7
	25-1000℃	×10⁶/K	8.0				7.9	7.8	7.1
Thermal conductivity		W/m·k	20	19		16	9.2	6.2	4.1
Dielectric strength		kv/mm	15	7	10
Volume resistivity	25℃	Ω·m	＞10¹⁴
	300℃	Ω·m	＞10¹⁴

＊These values show the typcal value based on the test results.
＊A-96:Dry Powder Pressed Products.AR-96:Extruded Cerarric Products

Inquiry

Sales and Business Control Group
Phone +81-561-48-5012, FAX +81-561-48-5058
It is also available for WEB meeting, Skype, SNS(LINE, WeChat, WhatsAPP, Kakao Talk, etc.)
If you want to use it, could you please inform us of you with our phone, FAX and E-mail( sales@phononmeiwa.co.jp ). We will contact you soon.


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