DC Interrupting Rating (Measured at rated voltage, time constant of less than 50 microseconds, battery source).
2.
DC Cold Resistance are measured at <10% of rated current in ambient temperature of
+20
°C.
3.
Typical Pre-arcing I
2
t (A
2
s) are measured at 10I
n
and rated current.
Electrical characteristics
% of Amp Rating
100%
150%
200%
Opening Time
4 hours minimum
<60 min
<2 min
Environmental Data
•
•
•
Operating temperature range: -55 °C to +125 °C (see derating curve)
Altitude: <2000 m above sea level
Humidity: 90% at
+20
°C, 50% at
+40
°C non-condensing
Reliability
•
•
•
•
Thermal shock test — MIL-STD-202G Method 107 G air-to-air, 100 cycles
Temperature cycling — JESD22 Method A104, Condition B, 100 cycles
Mechanical shock test — MIL-STD-002 Method 213B, 50g
Mechanical vibration test — MIL-STD-202, Method 204D, condition D, 20 g, 10-500 Hz.
Packaging
•
1000 fuses packed into a cardboard carton. Order with part number prefix BK1/. E.g., BK1/TCP70-5-R
1Axxxx Series for 6.3 mm (1/4”) fuses - see data sheet # 2131.
Recommended PCB fuseclips
•
Dimensions - mm
Construction
25.2 ± 0.3
5.6 ± 0.3
+0.2
6.3
- 0.0
Not to scale
1
2
3
4 5
1. Tin-plated copper cap
2. Ceramic tube
3. Fuse element wire
4. Filler
5. Eyelet
2
www.eaton.com/electronics
TCP70
70 Vdc Telecom fuses
Time-current curves
Technical Data 10250
Effective June 2017
100,000
10,000
1000
100
10
5A
Time in Seconds
6A
10A
1
15A
30A
0.1
0.01
0.001
0.0001
1
10
100
1000
10000
Current in Amps
3
Technical Data
10250
Effective June 2017
TCP70
70 Vdc Telecom fuses
I
2
t (A
2
s) Curves
100,000,000
10,000,000
1,000,000
100,000
5A
I
2
t (A
2
s) in Seconds
6A
10A
10,000
15A
30A
1000
100
10
0.0001 0.001
0.01
0.1
1.0
10
100
1000
10,000 100,000
Time in Seconds
4
www.eaton.com/electronics
TCP70
70 Vdc Telecom fuses
Thermal derating curve
Technical Data 10250
Effective June 2017
1.2
Factor of Rated Current (Amps)
1.1
1.0
0.9
0.8
0.7
0.6
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100 110 120 130
Ambient Temperature (°C)
Life Support Policy: Eaton does not authorize the use of any of its products for use in life support devices or systems without the express written
approval of an officer of the Compan . Life support systems are devices which support or sustain life, and whose failure to perform, when properly
used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant inju y to the user.
Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also
reserves the right to change or update, without notice, any technical information contained in this bulletin.
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