Product
Catalog: Resistors
Air
Cooled High Power Non-Reactive Cermet Resistors
Type
CP Resistors
P POWER
F FILM
S SYSTEMS
INC.
- Standard
size 10 watts to 1,000 watts in static air
- VERY
HIGH POWER DISSIPATION
- Wide
resistance range: 1 ohm to 20 meg ohms
- High
stability
- Low
TCR: less than 300 ppm typical
- Superior
terminals: platinum/silver offers much lower contact resistance
than nickel or aluminum
- Excellent
moisture resistance
- Excellent
RF characteristics
- May
be used in place of other types of resistors
- Close
tolerances available
Type
A Resistors
P POWER
F FILM
S SYSTEMS
INC.
- Wide
resistance range
- Power
ratings to 300kW* (up to 1,000 watts per square inch)
- Extremely
durable
- Very
low TCR: 100 ppm typical
- Very
stable: less than .4% change after 10 hours at rated power
- Resistor
is directly cooled by water (I.D. and O.D.)
- Typical
VSWR 1.1 to 1*
- Low
cost alumina substrate: power dissipation exceeds resistors
built on BeO substrate and cooled from one side
- Used
by most water cooled RF termination manufacturers.
* In a
properly designed system with proper water flow. Consult
factory.
Internal
Water Cooled Non-Reactive Cermet Resistors Type A1
- Convenient
hose connections
- Custom
design to application
- Small
size
- Call
for application
Oil
Cooled Non-Reactive Cermet Resistors Type 0
click to enlarge
click to enlarge
Fixed
Film Non-Reactive High Power Resistors
P POWER
F FILM
S SYSTEMS
INC.
Typical Specifications
|
Type
A |
Type
A1 |
TypeO |
Type
CP |
Resistance
Range |
1ohm-20meg
ohms |
|
|
Same |
Tolerances |
20%-10%-5%-2%-1% |
|
|
Same |
Load
Life |
Max.
5% change after 1000hrs at rated load |
|
|
Same |
Short
Time Overload (10 times rated. Power 5 seconds on -90
seconds off) |
2%
change |
|
|
Same |
Temperature
Coefficient (per degree C) |
300
ppm Max. |
|
|
Same |
Voltage
Coefficient |
Max.
1%-KV/IN |
|
|
Same |
Maximum
Operating Temperature |
90°C+ |
<100°C+ |
++ |
350°C* |
Moisture
Resistance |
2.5%
change Mil Std 202B, Method 103 |
|
|
Same |
Standard
Metalization |
Pt/Ag
(Au/Pt. Pd/Ag optional) |
|
|
Same |
+Cavitation
begins at 90oC disrupting water flow.
++Maximum operating temperature Mineral Oil 125oC/Silicon Oil
250oC
Typical
VSWR Most Applications Obtain 1.1 to 1
Type
A (Forced Water Cooled) Standard Sizes (Other Sizes Available)
| |
|
Max.
size 4.0" OD x 40" Long
Dimensions (Inches) |
Type
No. |
Rated
Power (Watts)** |
A |
B |
C |
D |
PFS
5 |
5,000 |
.500 |
.375 |
5.00 |
.375 |
PFS
7.5 |
10,000 |
.875 |
.500 |
7.625 |
.625 |
PFS
12 |
50,000 |
1.1 |
.500 |
12.00 |
.875 |
PFS
34 |
100,000 |
1.1 |
.500 |
34.00 |
.875 |
Type
O (Oil Cooled)
| |
|
Dimensions
(Inches) |
Type
No. |
Rated
Power (Watts)** |
A |
B |
C |
D |
PFS
10 |
50w/in2 |
.500 |
.375 |
10.00 |
.375 |
PFS
17.25 |
50w/in2 |
.625 |
.375 |
17.25 |
.500 |
Type
A1 (Internal Water Cooled)
| |
|
Dimensions
(Inches) |
Type
No. |
Rated
Power (Watts)** |
A |
B |
C |
D |
PFS
5 |
325 |
.500 |
.500 |
5.00 |
.375 |
PFS
6 |
800 |
1.0 |
.750 |
6.00 |
.750 |
PFS
8 |
1067 |
1.0 |
.750 |
8.00 |
.750 |
PFS10 |
1200 |
1.0 |
.750 |
10.00 |
.750 |
Type
CP (Air Cooled)
| |
Watts
at 40°C Derated to Zero
Ambient* at 350°C |
Standard
Sizes (Other Sizes Available)
Max. Size 4.0" OD x 40" Long
Dimensions (Inches) |
Type
No. |
Rated
Power (Watts)** |
A |
B |
C |
D |
PFS
1.75 |
10 |
.500 |
.250 |
1.75 |
.250 |
PFS
2 |
20 |
.500 |
.250 |
2.00 |
.250 |
PFS
2.5 |
30 |
.750 |
.500 |
2.50 |
.250 |
PFS
5 |
60 |
.750 |
.500 |
5.00 |
.500 |
PFS
6 |
100 |
1.0 |
.750 |
6.00 |
.750 |
PFS
8 |
150 |
1.0 |
.750 |
8.00 |
.750 |
PFS
12 |
300 |
1.0 |
.750 |
12.00 |
.750 |
PFS
18 |
500 |
1.0 |
1.0 |
18.00 |
.750 |
PFS
18 |
750 |
2.0 |
1.0 |
18.00 |
1.75 |
PFS
24 |
1000 |
2.0 |
1.0 |
24.00 |
1.75 |
|
