Page 1
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
Page 2
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
Page 3
POLY-FUSE® Resettable PTCs
Preheating
100
125
255
260
25
5 max.
Temperature(°C)
SolderingCooling
60 - 180
Time(s)
Radial Leaded > 16R Series
Soldering Parameters - Wave Soldering
Refer to the condition recommended by
Pre-Heating Zone
Soldering Zone
Cooling Zone
the flux manufacturer.
Max. ramping rate should not exceed 4°C/
Sec.
Max. solder temperature should not
exceed 260°C
Time within 5°C of actual Max. solder
temperature within 3 – 5 seconds
Total time from 25°C room to Max. solder
temperature within 5 minutes including
Pre-Heating time
Cooling by natural convection in air.
Max. ramping down rate should not
exceed 6°C/Sec.
Physical Specifications
Lead Material
Soldering
Characteristics
Insulating Material
Device Labeling
2.5A: Tin-plated Copper clad Steel
3.0 - 14.0A: Tin-plated Copper
Solderability per MIL–STD–202,
Method 208E
Cured, flame retardant epoxy polymer
meets UL94V-0 requirements.
Marked with ‘LF’, voltage, current rating,
and date code.
Environmental Specifications
Operating/Storage
Temperature
Maximum Device Surface
Temperature in Tripped State
Passive Aging
Humidity Aging
Thermal Shock
Solvent Resistance
Moisture Resistance Level Level 1, J–STD–020C
-40°C to +85°C
125°C
+85°C, 1000 hours
-/+ 5% typical resistance
change
+85°C, 85% R.H., 1000 hours
-/+ 5% typical resistance
change
+85°C to -40°C 10 times
-/+ 5% typical resistance
change
MIL–STD–202, Method 215F
No change
Specifications are subject to change without notice.
© 2013 Littelfuse, Inc.
Revised: 10/17/13
Page 4
POLY-FUSE® Resettable PTCs
Figure 2
A
E
B
C
D
Figure 1
Figure 2
A
E
B
C
D
A
B
C
D
Figure 1
Figure 2
Radial Leaded > 16R Series
Dimensions
A
C
E
B
D
A
B
D
E
C
Part Marking System
Single Sided Marking
250G
XXXX
16
Voltage Rating
Current Rating
Date Code
(Contact Littelfuse
for additional
information)
Figure 2Figure 1
Part
Number
Figure
16R250G 2 0.35 8.90 0.50 12.80 0.20 5.1 0.13 3.18 0.12 3.00 0.020 0.51 Sn/CuFe
16R300G 1 0.28 7. 10 0.43 11. 0 0 0.20 5.1 0.30 7. 6 0.12 3.00 0.032 0.81 Sn/Cu
16R400G 1 0.35 8.90 0.50 12.80 0.20 5.1 0.30 7. 6 0.12 3.00 0.032 0.81 Sn/Cu
16R500G 1 0.41 10.40 0.56 14.30 0.20 5.1 0.30 7. 6 0.12 3.00 0.032 0.81 Sn/Cu
16R600G 1 0.42 10.70 0.67 1 7. 10 0.20 5.1 0.30 7. 6 0.12 3.00 0.032 0.81 Sn/Cu
16R700G 1 0.44 11.20 0.78 19.70 0.20 5.1 0.30 7. 6 0.12 3.00 0.032 0.81 Sn/Cu
16R700GKL 2 0.44 11.20 0.93 23.70 0.20 5.1 0.30 7. 6 0.12 3.00 0.032 0.81 Sn/Cu
16R800G 1 0.50 12.70 0.82 20.90 0.20 5.1 0.30 7. 6 0.12 3.00 0.032 0.81 Sn/Cu
16R900G 1 0.55 14.00 0.85 21.70 0.20 5.1 0.30 7. 6 0.12 3.00 0.032 0.81 Sn/Cu
16R1000G 1 0.65 16.50 0.99 25.20 0.20 5.1 0.30 7. 6 0.12 3.00 0.032 0.81 Sn/Cu
16R1100G 1 0.69 17.50 1.02 26.00 0.20 5.1 0.30 7. 6 0.12 3.00 0.032 0.81 Sn/Cu
16R1200G 1 0.69 17.50 1. 1 0 28.00 0.40 10.2 0.30 7. 6 0.14 3.50 0.039 1. 0 0 Sn/Cu
16R1400G 1 0.93 23.50 1.10 27.90 0.40 10.2 0.30 7. 6 0.14 3.50 0.039 1. 0 0 Sn/Cu
A B C D E Physical Characteristics
Inches mm Inches mm Inches mm Inches mm Inches mm Lead (dia)
Max. Max. Max. Max. Typ. Typ. Min. Min. Max. Max. Inches mm
Material
16R Series
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/17/13
Page 5
Part Ordering Number System
16 R 700 G KL M R
PACKAGING STYLE
SERIES
TYPE: G (16VDC)
I
CURRENT CODE (SEE TABLE BELOW)
HOLD
R: RADIAL
VOLTAGE RATING (VDC)
Packaging Options
QUANTITY CODE: F=200 H=100 M=1000 D=1500 P=2000 U=500
Kinked Lead Device Option Identifier (16R700GKL product only)
POLY-FUSE® Resettable PTCs
Radial Leaded > 16R Series
BLANK: Bulk
R: Tape & Ammo
Part Number Ordering Number
16R250G
16R300G
16R400G
16R500G
16R600G
16R250GU
16R250GPR Tape and Ammo 2000 PR
16R300GU
16R300GPR Tape and Ammo 2000 PR
16R400GU
16R400GPR Tape and Ammo 2000 PR
16R500GU
16R500GPR Tape and Ammo 2000 PR
16R600GU
16R600GDR Tape and Ammo 1500 DR
16R700GF
16R700G
16R700GKLF
16R700GMR
16R700GKLMR
16R800G
16R900G
16R1000G
16R1100G
16R1200G
16R800GF
16R800GMR Tape and Ammo 1000 MR
16R900GF
16R900GMR Tape and Ammo 1000 MR
16R1000GF
16R1000GMR Tape and Ammo 1000 MR
16R1100GF
16R1100GMR Tape and Ammo 1000 MR
16R1200GH
16R1200GMR Tape and Ammo 1000 MR
hold
(A)
hold
Code
2.50 250
3.00 300
4.00 400
5.00 500
6.00 600
7. 0 0 700
8.00 800
9.00 900
10.00 1000
11. 0 0 110 0
12.00 1200
Packaging Option Quantity
Bulk 500 U
Bulk 500 U
Bulk 500 U
Bulk 500 U
Bulk 500 U
Bulk 200 F
Tape and Ammo 1000 MR
Bulk 200 F
Bulk 200 F
Bulk 200 F
Bulk 200 F
Bulk 10 0 H
Quantity &
Packaging Codes
I
I
16R1400G 16R1400GH 14.00 1400 Bulk 10 0 H
Specifications are subject to change without notice.
© 2013 Littelfuse, Inc.
Revised: 10/17/13
Page 6
POLY-FUSE® Resettable PTCs
A
B
A
1
L
1
P
0
D
0
F
L
W
4
H
0
I
2
H
1
W
5
W
Reference plane
∆h
∆h
H
1
H
C
1
C
2
∆h
∆p
Direction of unreeling
Cross section A - B
t
Radial Leaded > 16R Series
Tape and Ammo Specifications
Devices taped using EIA468-B/IE286-2 standards. See table below and Figure 1 for details.
Dimension EIA Mark
Carrier tape width W W 18 -0.5 /+1.0
Hold down tape width: W
Top distance between tape edges W
Sprocket hole position W
Sprocket hole diameter* D
4
6
5
0
Abscissa to plane(straight lead) H H 18.5 -/+ 3.0
Abscissa to plane(kinked lead) H
0
Abscissa to top 45.0 max.
Overall width w/o lead protrusion 56 max.
Overall width w/ lead protrusion 57 max.
Lead protrusion L
1
Protrusion of cut out L L 11 max.
Protrusion beyond hold-down tape l
Sprocket hole pitch P
2
0
Device pitch: 25.4
Pitch tolerance 20 consecutive. -/+ 1
Tape thickness t t 0.9 max.
Tape thickness with splice t
1
Splice sprocket hole alignment 0 -/+ 0.3
Body lateral deviation Δh Δh 0 -/+ 1.0
Body tape plane deviation Δp Δp 0 -/+ 1.3
Ordinate to adjacent component lead* P
1
Ordinate to adjacent component lead* 7.62 -/+ 0.7
Lead spacing:16R250G-16R1100G F F 5.08 -/+ 0.8
Lead spacing:16R1200G-16R1400G F F 10.18 -/+ 0.8
*Differs from EIA specication
IEC Mark
W
0
W
2
W
1
D
0
H
0
l
1
l
2
P
0
Dim. (mm) Tol. (mm)
11 min.
16 -/+ 0.5
1. 0 max.
Not specied
25.4 -/+ 0.5
2.0 max.
P
1
3.81 -/+ 0.7
Dimensions
3 max.
9 -0.5 /+0.75
4 -0.32 /+0.2
16R Series
Tape and Ammo Diagram
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/17/13
Figure 1
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