
75
Revised: July 12, 2010
POLYFUSE
®
Resettable PTCs
© 2010 Littelfuse, Inc
30R Series
Radial Leaded > 30R Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/30R.html for current information.
30R Series
30R Series
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provide overcurrent protection for low voltage (≤30V)
applications where space is not a concern and resettable
protection is preferred.
Electrical Characteristics
Part Number
I
hold
(A)
I
trip
(A)
V
max
(Vdc)
I
max
(A)
P
d
typ.
(W)
Maximum Time
To Trip
Resistance
Agency
Approvals
Current
(A)
Time
(Sec.)
R
min
(Ω)
R
1max
(Ω)
30R090 0.90 1.80 30 40 0.6 4.50 5.90 0.070 0.220
XX
30R110 1.10 2.20 30 40 0.7 5.50 6.60 0.050 0.170
XX
30R135 1.35 2.70 30 40 0.8 6.75 7.30 0.040 0.130
XX
30R160 1.60 3.20 30 40 0.9 8.00 8.00 0.030 0.110
XX
30R185 1.85 3.70 30 40 1.0 9.25 8.70 0.030 0.090
XX
30R250 2.50 5.00 30 40 1.2 12.50 10.30 0.020 0.070
XX
30R300 3.00 6.00 30 40 2.0 15.00 10.80 0.020 0.080
XX
30R400 4.00 8.00 30 40 2.5 20.00 12.70 0.010 0.050
XX
30R500 5.00 10.00 30 40 3.0 25.00 14.50 0.010 0.050
XX
30R600 6.00 12.00 30 40 3.5 30.00 16.00 0.005 0.040
XX
30R700 7.00 14.00 30 40 3.8 35.00 17.50 0.005 0.030
XX
30R800 8.00 16.00 30 40 4.0 40.00 18.80 0.005 0.020
XX
30R900 9.00 18.00 30 40 4.2 40.00 20.00 0.005 0.020
XX
Description
Features
Applications
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material meets UL 94V-0
requirements
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Free and Halogen-Free*
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and peripherals
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I
hold
= Hold current: maximum current device will pass without tripping in 23°C still air.
I
trip
= Trip current: minimum current at which the device will trip in 23°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
d
= Power dissipated from device when in the tripped state at 23°C still air.
R
min
= Minimum resistance of device in initial (un-soldered) state.
R
1max
= Maximum resistance of device at 23°C measured one hour after tripping.
Caution: Operation beyond the specified rating may result in damage and possible arcing
and flame.
Agency Approvals
AGENCY AGENCY FILE NUMBER
E183209
R50119318
* Effective January 1, 2010, all 30R PTC products will be manufactured Halogen Free (HF). Existing Non-Halogen Free 30R PTC products may continue to be sold, until supplies are depleted.
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