PFU Series
1000 W & 800 W
High Power Resistors / High Voltage Resistors
• High Power Density
• 0.5 Ohm to 1 Mohm
• Very Low Inductance
• Moisture resistant encapsulation
• Vibraton Proof
Applications: Power Supplies, Motor Controls,
Snubber Resistors, Load Banks, and Robotics
SPECIFICATIONS
Type
PFU 800
PFU 1000
Conditions
Rated Power
-
1000
At Flange Temperature -55 to +75 °C
800 - At Flange Temperature -55 to +90 °C
Short Time Overload
1200
1200
5 Seconds mounted on cooler
Thermal Resistance
Resistance Range
Nominal Resistance
TCR
Tolerance
0.10 °C / W
0.5 ohm to 1 Mohm
E24+
+/- 100 PPM/K (A)
+/- 5% (J)
From Resistor to Flange
Maximum power is limited per Ohm’s law.
V2/R
for example at 1Mohm power is limited to 25 watts
E24, additionally 2.5, 5.0 and 8.0
1 ohm to 1 Mohm, +/- 200PPM/°C
< 1 ohm , for -55 to +155 °C
Operation Temperature
Max Applied Voltage
Insulation Voltage
Partial Discharge Voltage
-55 to +175 °C
V = √ (P • R) (5,000V Max)
5,000 V-50Hz
5,000 V-30KHz
5,000 V-50Hz
5,000 V-50KHz
At Resistor Element Surface
P Rated Power (W),
R - resistance value (ohm), V - voltage (V)
60 seconds between Terminals and Flange.
Leak current below 0.5 mA
Starting Voltage Zero Count
Capacitance
73 pF
Terminal to Flange
Inductance
108 nH
Terminal to Terminal
Capacitance
25 pF
Terminal to Terminal
Creep Distance
42 mm
Air Distance
14 mm
Load Life
Δ R +/- 0.40%
Continuous Power 1000 hours
Humidity
Δ R +/- 0.25%
60 °C, 90 to 95% RH, DC 0.1W, 1000 hours
Temperature Cycle
Δ R +/- 0.20%
-55 °C, 30 min, +155 °C 30 min, 5 cycles
Insulation Resistance
Over 1G ohm
Between terminals and flange, DC 1000V
Vibration
Δ R +/- 0.25%
See Note below
Flammability
UL94V-0
For Resistor Body
Weight
160 grams
168 grams
Note: IEC60068 2-6 displacement 0.75 mm or acceleration 100m/J² 10Hz to 54Hz sweep, 10 cycles X,Y,Z direction
Riedon Inc.
© Riedon, Inc.
300 Cypress Avenue Alhambra CA 91801
(626) 284-9901
www.riedon.com sales@riedon.com
(626) 284-1704
Revised: 201903_003
