Surface Mount Resettable PTCs
Revision October 18, 2019
1 / 4
@ UN Semiconductor Co., Ltd. 2019
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
The SMD 0805 Series PTC provides surface mount
over-current protection for applications where space is at a
premium and reset table protection is desired.
RoHS compliant, Lead-Free and Halogen-Free
Fast time-to-trip
Compact design saves board space
Compatible with high temperature solders
Agency recognition: UL
Low-profile
Computer mother board, Modem.
PDAs & Charger, Analog & digital line card
Digital cameras
General electronics
USB peripherals
Power ports
Part Number
I
hold
(A)
I
trip
(A)
V
max
(Vdc)
I
max
(A)
P
dtyp.
(W)
Maximum Time
To Trip
Resistance
Current
(A)
Time
(Sec.)
R
min
(Ω)
R
max
(Ω)
SMD0805-005
0.05
0.15
15
100
0.50
0.50
1.50
1.500
20.00
SMD0805-005-24V
0.05
0.15
24
100
0.50
0.50
1.50
1.500
20.00
SMD0805-010
0.10
0.30
15
100
0.50
0.50
1.50
0.750
6.000
SMD0805-010-30V
0.10
0.30
30
100
0.50
0.50
1.50
0.750
6.000
SMD0805-020
0.20
0.50
9
100
0.50
8.00
0.02
0.500
3.500
SMD0805-020-16V
0.20
0.50
16
100
0.50
8.00
0.02
0.500
3.500
SMD0805-035
0.35
0.75
6
100
0.50
8.00
0.10
0.200
1.200
SMD0805-035-12V
0.35
0.75
12
100
0.50
8.00
0.10
0.200
1.200
SMD0805-050
0.50
1.00
6
100
0.50
8.00
0.10
0.100
0.850
SMD0805-050-12V
0.50
1.00
12
100
0.50
8.00
0.10
0.100
0.850
SMD0805-050-16V
0.50
1.00
16
100
0.50
8.00
0.10
0.100
0.850
SMD0805-050-24V
0.50
1.00
24
100
0.50
8.00
0.10
0.100
0.850
SMD0805-075
0.75
1.50
6
40
0.60
8.00
0.20
0.070
0.385
SMD0805-075-12V
0.75
1.50
12
40
0.60
8.00
0.20
0.070
0.385
SMD0805-100
1.00
1.95
6
100
0.60
8.00
0.30
0.040
0.230
SMD0805-100-12V
1.00
1.95
12
100
0.60
8.00
0.30
0.040
0.230
SMD0805-110
1.10
2.20
6
100
0.60
8.00
0.30
0.035
0.210
Surface Mount Resettable PTCs
Revision October 18, 2019
2 / 4
@ UN Semiconductor Co., Ltd. 2019
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
SMD0805-110-12V
1.10
2.20
12
100
0.60
8.00
0.30
0.035
0.210
SMD0805-125
1.25
2.50
6
100
1.50
8.00
0.50
0.025
0.140
SMD0805-150
1.50
3.00
6
100
1.00
8.00
0.60
0.015
0.130
I
hold
= Hold current: maximum current device will pass without tripping in 25°C still air.
I
trip
= Trip current: minimum current at which the device will trip in 25°C still air.
V
max
= Maximum voltage device can withstand without damage at rated current (I
max
)
I
max
= Maximum fault current device can withstand without damage at rated voltage (V
max
)
P
dtyp.
= Power dissipated from device when in the tripped state at 25°C still air.
R
min
= Minimum resistance of device in initial (un-soldered) state.
R
max
= Maximum resistance of device in initial (un-soldered) state.
R
1max
= Maximum resistance of device at 25°C measured one hour after tripping.
Caution: Operation beyond the specified rating may result in damage and possible arcing and flame.
Part Number
Ambient Operation Temperature
-40°C
-20°C
0°C
25°C
40°C
50°C
60°C
70°C
85°C
Hold Current (A)
SMD0805-005
0.07
0.06
0.055
0.05
0.04
0.035
0.03
0.025
0.015
SMD0805-010
0.14
0.12
0.11
0.10
0.80
0.07
0.06
0.05
0.03
SMD0805-020
0.28
0.25
0.23
0.20
0.17
0.14
0.12
0.10
0.07
SMD0805-035
0.47
0.44
0.39
0.35
0.30
0.27
0.24
0.20
0.14
SMD0805-050
0.68
0.62
0.55
0.50
0.40
0.37
0.33
0.29
0.23
SMD0805-075
1.00
0.90
0.79
0.75
0.63
0.57
0.53
0.41
0.34
SMD0805-100
1.35
1.25
1.15
1.00
0.82
0.74
0.65
0.55
0.42
SMD0805-110
1.45
1.35
1.20
1.10
0.92
0.84
0.75
0.65
0.52
SMD0805-125
1.65
1.53
1.36
1.25
1.05
0.95
0.85
0.74
0.59
SMD0805-150
1.98
1.84
1.63
1.50
1.26
1.14
1.02
0.88
0.71
Derating Curves for
SMD0805 Series
Ambient Temperature (°C)