Aluminium Housed Power Resistors
Type CFH Series
Literature No. 1773318
Issued: 02-06
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres
unless otherwise specified.
Specifications subject to
change.
www.tycoelectronics.com
passives.tycoelectronics.com
Key Features
■
2200W in a 72cm2
footprint
•Unparalleled power
density of 31W/cm2
■
Impressive Pulse
Capability
•Large active element
can absorb up to 24kJ
■
No Heatsink Required
•Dissipates up to 950W
in free air
■
Slimline Casing
•30mm casing height for
design flexibility
■
Environmental Protection
to IP55
•Reliable in the harshest
conditions
Applications
■
Braking
■
Balancing
■
Capacitor Charging &
Discharging
■
Crowbar
■
Filter
■
Power Supplies
■
Electrical Machinery
■
Inrush Limiting
Type CFH Series
The CFH is a high quality range of
aluminium housed power resistors
offering environmental protection to
IP55, 6kV dielectric strength, 1.8kW
power dissipation, and the ability to
absorb electrical pulses of up to
24kJ.
The use of advanced materials in the
construction of this device enables
operating temperatures of up to
450ºC giving very high power
density.
Characteristics -
Electrical
CFH350 CFH500 CFH750 CFH1100
Dissipation @ 25°C with Heatsink (Watts): 650 850 1300 1800
Without Heatsink: 350 500 750 1100
With Water Cooled Heatsink (40°C): 750 1000 1500 2200
Overload Rating (5s): 4000 5600 8000 12000
Ohmic Value Min (Ohms): 0R5 0R5 0R5 0R5
Max: 10K 18K 27K 27K
Tolerance: ±5% Standard
Maximum Working Voltage (DC/ACrms) Volts: 1500 2500 3500 4000
Insulation Resistance (Volts): >=10000 MΩ
Dielectric Strength (AC peak) Volts: 4500 standard and 6000 special
Inductance (Henries): 5-50 µH at 7-70 µH at 10-100 µH at 20-200 µH at
1000 Hz 1000 Hz 1000 Hz 1000 Hz
Standard Heatsink area (mm2): 1600 1600 1600 1600
Thickness (mm): 135 135 135 135
Protection Grade (IP): IP55
Mounting: Vertically
Cable Length: 300mm
Weight (g): 460 670 920 1250
Heat Dissipation: Although the use of proprietary heat sinks with lower thermal
resistance is acceptable, up rating is not recommended. The use
of proprietary heat sink compound to improve
thermal conductivity is essential.
Dimensions
Type CFH350 CFH500 CFH750 CFH1100
A110 mm 160 mm 220 mm 320 mm
B60 mm 110 mm 140 mm 240 mm
A
B
30lf
ø6.2
71 95
82 ±2
Aluminium Housed Power Resistors
Type CFH Series
Literature No. 1773318
Issued: 02-06
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres
unless otherwise specified.
Specifications subject to
change.
www.tycoelectronics.com
passives.tycoelectronics.com
Derating Curve Pulse Energy
Surface Temperature Rise
CFH 750 680R J
Common Part
350
500
750
1100
Type
0.1ohm (100mΩ) R10
1 ohm (1000mΩ) 1R0
1K (1000Ω) 1K0
Resistance Value Tolerance
CFH - Aluminium
Housed Power Resistor J – 5%
How to Order
0 100 200 300 400 500
2500
2000
1500
1000
500
0
Power (W)
Heatsink Temp. (degC)
CFH1100
CFH750
CFH500
CFH350
0.2 1 10 100 1000
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Energy (kJ)
Resistance (Ohms)
CFH1100
CFH750
CFH500
CFH350
0 200 400 600 800 1000 1200 1400 1600 1800 2000
400
350
300
250
200
Temperature Rise (°C)
Power (W)
CFH750 CFH1100CFH500CFH350
