HOME > Products > Electronic material > Aluminum base PWB material > AC-7900
Aluminum base PWB material / Prepreg insulation type
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Excellent in price performance |
ＡＣ－７９００
λ = 1.0W/mK |
Proposal of application of
RISHO thermal solution materials
Click the above picture to get more information |
Composition and application |
AC-7900 is the Aluminum base PWB material with glass reinforced and white colored insulation layer to mount LEDs. |
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Breakdown voltage of insulation layer (0.6mm thick) is 5kV.
Insulation layer also has excellent discoloration resistance to Heat. |
Spectral reflectance on white colored inasulation layer |
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| White colored insulation layer can reflect every visible light up to 90%. |
Discoloration resistance |
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| Least discoloration appeared on AC-7900 even after 120℃×2000 hours treatment. |
Insulation reliability |
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Glass reinforced insulation layer has excellent strength even if it is very thin.
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Breakdown voltage
(Insulation layer=60μm thick.)
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Breakdown voltage
(Insulation layer=120μm thick.)
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Test method:JIS C 2110
Step up voltage at a rate of 500V a second up to breakdown.
Test piece size (Thickness)
Aluminum plate=1.5mm, Insulation layer=60/80/120μm, Cu foil=35μm
Test condition
Positive electrode=Alumimun plate Negative electrode=Cu foil(25mmφ)
Impressed current =AC Leakage current=10mA |
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Standard specification |
| Product code |
Dimension (mm) |
AC-7900 |
255mm × 510mm
340mm × 510mm
510mm × 510mm |
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Thickness |
Product
code |
Insulation layer
(μm) |
Copper foil
(μm) |
Aluminum plate
(mm) |
| AC-7900 |
60 / 120 |
35 / 70 / 105 |
1.0 / 1.5 / 2.0 |
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General properties |
| Test item |
Unit |
Treatment |
AC-7900 |
Remark |
Thermal conductivity
（Laser flash method） |
W/mK |
A |
1.0 |
Insulation layer |
| Dielectric constant (1MHz) |
RT |
－ |
C-96/20/65 |
7.0 |
| Dissipation factor |
RT |
－ |
C-96/20/65 |
0.020 |
| Tg |
DMA |
℃ |
Ａ |
160 |
| Flammability |
UL94 |
－ |
A |
V-0 |
Coefficient of
thermal expansion |
Warp/Fill |
ppm/℃ |
Ａ |
13/14 |
Thermal conductivity
（TIM tester method） |
W/mK |
A |
1.0 |
Aluminum base PWB material |
| Insulatin resistance |
RT |
ＭΩ |
C-96/20/65 |
2×109 |
After treatment |
+D-2/100 |
1×107 |
| Volume resistivity |
RT |
MΩm |
C-96/20/65 |
2×107 |
| Surface resistance |
RT |
ＭΩ |
C-96/20/65 |
3×109 |
| Solder limit |
300℃ |
sec |
Ａ |
300< |
| Peel strength |
35μm |
kN/m |
Ａ |
1.8 |
| Breakdown voltage |
RT |
kV |
Vertical to layer in oil |
5< (0.06mm) |
| 7< (0.12mm) |
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Test method is JIS C-6481
The various above- mentioned data is measured value , and is not guaranteed performance. |
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UL recognized specification (Excerpt) |
Metal
plate
thickness
（mm） |
Insulation
layer
thickness
（μm）
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Max.
area
diameter
（mmφ） |
UL
flame
class |
Solder limit |
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Min. |
Max. |
Min. |
Max. |
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0.96 |
30 |
200 |
18 |
102 |
50.8 |
V-0 |
288 |
30 |
90 |
Color |
R.T.I.（℃） |
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CTI |
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Electrical |
Mechanical |
WT |
90 |
90 |
0 |
0 |
－ |
1 |
YES |
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