4-1625876-8 Datasheet, PDF (1/1 Pages) Tyco Electronics – Carbon Composition Resistors

Carbon Composition Resistors
Type CBT Series
Type CBT Series
The CBT series of resistors is
constructed utilising solid carbon
composition, which is the traditional
medium for absorbing high energy
pulses, in cases of high inrush current.
These resistors have evolved over
many years to have excellent pulse
withstand capabilities, whilst remaining
very stable. These improved
characteristics have been achieved by
prudent selection of materials of
optimum physical properties and
by advances in the manufacturing
process.
Key Features
I Designed for Pulse Withstand
I Range of Resistance
Tolerances
I Solid Carbon Composition
I Low Cost, High Performance
I Two Sizes Available
I Wide Range of Resistance
Values
I Supplied Ammo Pack in
boxes of 2000
Characteristics -
Electrical
Power at 70°C Ambient:
Maximum Voltage:
Resistance Range:
Resistance Values:
Voltage Coefficient:
Limiting Element Voltage:
Maximum Overload Voltage:
Insulation Resistance:
Characteristics -
Environmental
CBT25
CBT50
0.25 Watts Derating to 0 at +125°C
0.5 Watts Derating to 0 at +125°C
250 Volts
350 Volts
1R0 - 5M6
1R0 - 22M
5% E24 Series 10% E12 Series 20% E6 Series
± 0.035%/V
± 0.035%/V
250 Volts
350 Volts
400 Volts
700 Volts
1000 M minimum
Operating Temperature Range:
Temperature Cycles:
(-55°C to +125°C, 5 cycles)
Load Life (1000 hours at 70°C):
Resistance to Solder Heat:
(350°C for 3 seconds)
Short Time Overload:
(2.5 x Rated Power for 5 seconds)
Humidity (40°C, 95%RH, 240 hrs):
-55°C to +125°C
∆R/R ± 2%
∆R/R ± 10%
∆R/R ± 3%
∆R/R ± 2%
∆R/R ± 3%
Dimensions-
Style
L
D
l
d
CBT25 6.3 ± 0.7 2.4 ± 0.1 27 min. 0.6
CBT50
9.5±0.8
3.6±0.2 25 min. 0.7
Pulse Withstand Characteristics
Charging and Discharging a 2000 pF Capacitor for 100 Cycles
10
10
0
-10
-20
-30
0
a
b
CBT25
a: 1.2MΩ
b: 33kΩ
c: 1kΩ
2
4
6
8 10
Voltage (kv)
c
12 14
0
-10
-20
-30
0
CBT50
a: 1.2MΩ
b: 10kΩ
c: 1kΩ
2 4 6 8 10
Voltage (kv)
a
b
c
12 14
How to Order
CBT
25
J
10K
Common Part
Carbon Composition
Resistor
Size
25 - 0.25W
50 - 0.5W
Tolerance
J - ±5%
K - ±10%
M - ±20%
Resistance Value
1 ohm
(1 ohm) 1R0
1K ohm
(1000 ohms) 1K
100K ohm
(100000 ohms) 100K
1M ohm
(1000000 ohms) 1M
Literature No. 1773192
Issued: 12-05
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres Specifications subject to
unless otherwise specified. change.
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