Littelfuse 16R User Manual
POLY-FUSE® Resettable PTCs
Radial Leaded > 16R Series
16R Series
Agency Approvals
AGENCY AGENCY FILE NUMBER
E183209
R50119318
Electrical Characteristics
RoHS
Description
Littelfuse 16R Series Radial Leaded PTCs are designed to
provide resettable overcurrent protection serving a wide
range of electronics applications. With maximum 16 volts
and maximum 100-ampere short circuit rating, they offer an
ideal solution for USB protection.
Features
• 100A short circuit rating
• 16V Operating voltages
• Fast time–to–trip
• Meets all USB protection
requirements
• RoHS compliant, Lead Free and Halogen-Free*
Applications
• Computers & peripherals
• Any USB application
• General Electronics
Part Number
I
hold
(A)
Maximum Time
I
trip
(A)
V
max
(Vdc)
I
max
(A)
Pd
typ.
(W)
To Trip
Current
(A)
Time
(Sec.)
Resistance
R
min
(Ω)
16R250G 2.5 4.7 16 100 1. 0 12.5 5.0 0.0220 0.0530
16R300G 3.0 5.1 16 100 2.3 15.0 1.0 0.0380 0.0975
16R400G 4.0 6.8 16 100 2.4 20.0 1.7 0.0210 0.0600
16R500G 5.0 8.5 16 100 2.6 25.0 2.0 0.0150 0.0340
16R600G 6.0 10.2 16 100 2.8 30.0 3.3 0.010 0 0.0280
16R700G 7. 0 11. 9 16 10 0 3.0 35.0 3.5 0.0077 0.0200
16R800G 8.0 13.6 16 100 3.0 40.0 5.0 0.0056 0.0175
16R900G 9.0 15.3 16 100 3.3 45.0 5.5 0.0047 0.0135
16R1000G 10.0 1 7. 0 16 10 0 3.6 50.0 6.0 0.0040 0.0102
16R1100G 11.0 18.7 16 10 0 3.7 55.0 7. 0 0.0037 0.0089
16R1200G 12.0 20.4 16 10 0 4.2 60.0 7. 5 0.0033 0.0086
16R1400G 14.0 23.8 16 10 0 4.6 70.0 9.0 0.0026 0.0064
I
= Hold current: maximum current device will pass without tripping in 20°C still air.
hold
I
= Trip current: minimum current at which the device will trip in 20°C still air.
trip
V
= Maximum voltage device can withstand without damage at rated current (I
max
I
= Maximum fault current device can withstand without damage at rated voltage (V
max
Pd = Power dissipated from device when in the tripped state at 20°C still air.
)
max
max
R
= Minimum resistance of device in initial (un-soldered) state.
min
R
= Maximum resistance of device at 20°C measured one hour after tripping.
1max
Caution: Operation beyond the specied rating may result in damage and possible arcing
and flame.
)
Agency
Approvals
R
1max
(Ω)
X X
X X
X X
X X
X X
X X
X X
X X
X X
X X
X X
X X
* Effective January 1, 2010, all 16R PTC products will be manufactured Halogen Free (HF). Existing Non-Halogen Free 16R PTC products may continue to be sold, until supplies are depleted.
Specifications are subject to change without notice.
© 2013 Littelfuse, Inc.
Revised: 10/17/13
POLY-FUSE® Resettable PTCs
0.01
0.1
1
10
100
1000
10000
100000
0.90A
1.10A
1.35A
1.60A
1.85 A
2.50A
3.00A
4.00A
5.00A
6.00A
7.00A
8.00A
9.00A
30R
0.11 10 100
Current in Amperes
Time in Seconds
Radial Leaded > 16R Series
Temperature Rerating
Ambient Operation Temperature
-40°C -20°C 0°C 20°C 40°C 50°C 60°C 70°C 85°C
Part Number
16R250G 3.7 3.3 2.9 2.5 2.2 2.0 1. 8 1. 6 1. 3
16R300G 4.4 4.0 3.5 3.0 2.6 2.4 2.1 1. 9 1. 6
16R400G 5.9 5.3 4.7 4.0 3.5 3.2 2.9 2.6 2.1
16R500G 7. 4 6.6 5.9 5.0 4.4 4.0 3.6 3.2 2.6
16R600G 8.9 8.0 7. 1 6.0 5.2 4.8 4.3 3.9 3.2
16R700G 10.4 9.3 8.2 7. 0 6.1 5.6 5.0 4.5 3.7
16R800G 11. 8 10.6 9.4 8.0 7. 0 6.3 5.7 5.1 4.2
16R900G 13.3 12.0 10.6 9.0 7. 8 7. 1 6.5 5.8 4.7
16R1000G 14.8 13.3 11. 8 10.0 8.7 7. 9 7. 1 6.4 5.3
16R1100G 16.3 14.6 12.9 11. 0 9.6 8.7 7. 9 7. 0 5.8
16R1200G 1 7. 7 15.9 14.1 12.0 10.5 9.5 8.6 7. 7 6.3
16R1400G 20.7 18.6 16.5 14.0 12.2 11. 1 10.0 9.0 7. 4
Hold Current (A)
Average Time Current Curves
2.5 A
3.0 A
4.0 A
5.0 A
6.0 A
7.0 A
8.0 A
9.0 A
10.0 A
11.0 A
12.0 A
14.0 A
100
10
1
Time in Seconds
0.1
0.01
110 100 1000
Current in Amperes
The average time current curves and Temperature Rerating curve performance is affected
by a number or variables, and these curves provided as guidance only. Customer must
verify the performance in their application.
16R
Temperature Rerating Curve
Temperature Rerating Curve
170%
150%
130%
110%
90%
70%
50%
Percentage of Rated Current
30%
10%
-40 -30 -20 -10 01020304050607080
Temperature (°C)
16R Series
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/17/13
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