Low Profile Power Resistor
Type CJB Series
Literature No. 1773034
Issued: 11-05
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
■
High Power Dissipation
•1000W for under 1kg
■
Low Profile
•Fits where other
resistors don’t
■
IP64 Environmental
Protection
•Worldwide use in any
industry
■
High Pulse Capability
•Fits todays dynamic
braking requirements
■
Overload 20 times rated
power
•Providing a size and
cost effective solution
Applications
■
Braking
■
Capacitor Charging &
Discharging
■
Crowbar
■
Filter
■
Power Supplies
■
Electrical Machinery
Type CJB Series
The CJB range of power resistors
are aluminium housed and wire-
wound, designed to withstand high
adiabatic pulses in a compact
package. These devices offer a
high power dissipation capacity
with the appropriate heatsink and
superior environmental protection
(IP64).
Tyco can test resistors to conform
to relevant international MIL and
customer specifications and will
advise on the use of resistors for
pulse applications.
Characteristics -
Electrical
CJB250 CJB500 CJB750 CJB1000
Power Rating Free Air (W): 100 150 200 250
Power Rating Mounted on Heatsink (W): 250 500 750 1000
Maximum Case Temperature (°C): 270
Stability at Rated Power (1000hrs): ±6.5%
Resistance Range (Ω): 1 – 30 1 – 60 1 – 100 1 – 130
Tolerances Available: ± 5%, ±10%
Insulation Resistance @ 500V (GΩ): >1.0
Isolation Voltage (1 minute ACrms): 2.5kV
Series Inductance @ 10kHz (mH): <2.5 <4.5 <5.0 <13.0
Capacitance Terminal to Case @ 10kHz (pF): <200 <300 <400 <500
Operating Temperature (°C): -40 to +70
Overload Rating: 20x Rated Power For 1 Second Every Minute
Overload Rating: 4x Rated Power For 5 Seconds Every Minute
Terminations: Silicone Coated Flying Leads
Storage Temperature (°C): -40 to +270
IP Rating: 64
Case Finish: Natural Anodised
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.
L2
L3 L3
L1
72.0
60.0
ø4.8 15
Dimensions
Type L1 L2 L3
CJB250 110 90 -
CJB500 190 170 85
CJB750 270 250 125
CJB1000 350 330 165
Low Profile Power Resistor
Type CJB Series
Literature No. 1773034
Issued: 11-05
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 Curves
Pulse Energy
0 50 100 150 200 250 300
1100
1000
900
800
700
600
500
400
300
200
100
0
Power (W)
Heatsink Temp. (degC)
Adiabatic Pulse Power (Duration <0.2sec)
12000
10000
8000
6000
4000
2000
0
0 50 100 150
Resistance (Ohms)
Energy (J)
CJB1000
CJB750
CJB500
CJB250
CJB1000
CJB750
CJB500
CJB250
CJB 250 2RO J
Common Part
250
500
750
1000
Power Rating
1ohm
(1000 mille ohms)
1R0
Resistance Value Tolerance
CJB - Low Profile
Power Resistor
J - 5%
K - 10%
How to Order
