參數資料
型號： 7721-15NG
廠商： Aavid Thermalloy
文件頁數： 7/116頁
文件大?。?/td> 0K
描述： INSULATING SHOULDER WASHER
標準包裝： 1,000
直徑 - 內部： 0.114 ~ 0.116"（2.90 ~ 2.95mm）
直徑 - 外部： 0.135 ~ 0.141"（3.43 ~ 3.58mm）
厚度： 0.020 ~ 0.025"（0.51 ~ 0.64mm）
接頭直徑： 0.220 ~ 0.240"（5.59 ~ 6.10mm）
長度 - 接頭下方： 0.048 ~ 0.055"（1.22 ~ 1.40mm）
材質： 尼龍
其它名稱： 034703
104
A
C
CESSORIES
EUROPE
ASIA
Italy Tel: +39 051 764011 email: sales.it@aavid.com
United Kingdom Tel: +44 1793 401400 email: sales.uk@aavid.com
Singapore Tel: +65 6362 8388 email: sales@aavid.com.sg
Taiwan Tel: +886 (2) 2698-9888 email: sales@aavid.com.tw
AMERICA
USA Tel: +1 (603) 224-9988 email: info@aavid.com
www.aavidthermalloy.com
USA Tel: +1 (603) 224-9988 email: info@aavid.com
"C"
"A"
"B"
"E"
DIA
"D"
Insulators – Aluminum Oxide
Aluminum oxide has unique thermal conductivity qualities
and features low loss factors at high frequencies. It has high
compressive strength, high volume resistivity, low thermal
expansion and resists radiation.
Aluminum oxide insulating washers have a dielectric strength
of approximately 21.7 x 10
3 volts/mm for .76mm material (550
volts/mil for 0.030 inch material) and 16.9 x 10
3 volts/mm for
1.57mm material (430 volts/mil for 0.062 inch material). The
thermal conductivity of aluminum oxide is 15.06W/(m°C) at 75°C.
PROPERTY
A1203
Dielectric constant 25°C (77°F)
Dissipation factor 25°C (77°F)
Electrical resistivity 25°C (77°F)
Dielectric strength (AC)
Density
Hardness
Flexural strength 25°C (77°F)
Modules of elasticity
Poisson’s ratio
Tensile strength 25°C (77°F)
Compressive strength 25°C (77°F)
Coefficient of thermal expansion
Thermal conductivity
Specific heat (100°C)
Melting point
Maximum temperature for
continuous use
CHEMICAL – TYPICAL VALUE
94% nominal
ELECTRICAL
8.9 (1MHz)
8.9 (10GHz)
0.0001 (MHz)
0.0010 (10GHz)
>1014 ohm-cm
8.66 x 103 volts/mm (6.35mm thick)
[220 volts/mil (0.250” thick)]
16.73 x 103 volts/mm (1.27mm thick)
[425 volts/mil (0.050” thick)]
28.35 x 103 volts/mm (0.25mm thick)
[720 volts/mil (0.010” thick)]
PHYSICAL
3.62 g/cm3 (226 lb/ft3)
78 (Rockwell 45 N)
MECHANICAL
3.17 x 108 Pa (minimum) [46.00 psi (minimum)]
3.52 x 108 Pa (typical) [51,000 psi (typical)]
2.83 x 1011 Pa (41 x 106 psi)
0.21
1.93 x 108 Pa (28,000 psi)
2.10 x 109 Pa (305,000 psi)
THERMAL
7.9 x 106/°C (4.4 x 106/°F)
18.01 W/(m°C) @ 25°C
14.24 W/(m°C) @ 100°C
79.56 W/(m°C) @ 400°C
8.79 x 104 KJ/kg°C [2.1 x 104 Btu/lb °F]
>3600°C (6512°F)
1700°C (3100°F)
TEST METHOD
Spectrographic analysis
(100%-% by wt. of total
metallic impurity)
ASTM D150-70
ASTM D2520-70
ASTM D150-70
ASTM D2520-70
ASTM D1829-66
ASTM D116-69
ASTM C20-70
ASTM E18-67
ACMA Test #2
ASTM C623-69T
ACMA Test #4
ASTM C528-63T
ASTM C372-56
ASTM C408-58
ASTM C351-61
"B"
10.92
(0.430)
"A"
1.83
(0.072)
"E"
15.09
(0.594)
"D"
RAD
TYP (2)
5.46
(0.215)
3.68
(0.145)
TYP (4)
"C" RAD
TYP (2)
DIA
Aluminum Oxide
Aluminum Oxide for TO-3
Aluminum Oxide Ceramic for TO-220
Aluminum Oxide Ceramic for TO-218, TO-247, and TO-3P
Part number
Thickness
“A” Dim
“B” Dim
“C” Dim
“D” Dim
“E” Dim
4103G*
1.91 (0.075)
39.70 (1.563)
26.67 (1.050)
13.34 (0.525) 4.75 (0.187)
30.40 (1.197)
4104G*
1.78 (0.070)
44.45 (1.750)
31.75 (1.250)
15.88 (0.625) 7.16 (0.282)
30.15 (1.187)
Part number
Thickness
“A” Dim
“B” Dim
“C” Dim
“D” Dim
“E” Dim
4169G*
1.57 (0.062)
19.30 (0.760)
13.97 (0.550)
4.78 (0.188)
6.98 (0.275)
3.68 (0.145)
4170G**
1.78 (0.070)
19.30 (0.760)
13.97 (0.550)
4.78 (0.188)
6.98 (0.275)
3.68 (0.145)
4171G**
1.78 (0.070)
16.51 (0.650)
12.70 (0.500)
4.32 (0.170)
6.35 (0.250)
3.81 (0.150)
4177G**
1.78 (0.070)
17.45 (0.687)
14.27 (0.562)
5.54 (0.218)
7.14 (0.281)
3.18 (0.125)
Part number
Thickness
“A” Dim
“B” Dim
“C” Dim
“D” Dim
“E” Dim
4180G*
1.78 (0.070)
23.24 (0.915)
18.80 (0.740) 6.98 (0.275)
9.40 (0.370)
3.96 (0.156)
ORDERING INFORMATION
"A"
"B"
"C"
"D"
"E"
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