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
- Call for application
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
|
Altronic
Research Inc. 
P.O. Box 249, Yellville, Arkansas 72687
1-800-482-5623 (in the U.S.)
870-449-4093
fax 870-449-6000
info@altronic.com
www.altronic.com
8:00 a.m. - 4:30 p.m. M-F Central Standard Time
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