PolySwitch® Resettable PPTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RGEF Series
RGEF Series
Description
Littelfuse PolySwitch radial-leaded devices represent the
most comprehensive and complete set of PPTC products
available in the industry today. RGEF series offers low hold
currents up to 14A.
Features
• Resettable and single-use overcurrent devices
• Wide range of form factor and termination methods
• Devices compatible with high-volume electronics
assembly
• RoHS compliant, Lead-Free and Halogen-Free
Applications
• Satellite video receivers
• Industrial controls
• Transformers
• Computer motherboards
• Modems
• USB hubs, ports and
peripherals
• IEEE 1394 ports
• CD-ROMs
• Game machines
• Battery packs
• Phones
• Fax machines
• Analog and digital line cards
• Printers
Electrical Characteristics
Part
Number
IHITVMAX IMAX PD Typ Max Time-to-trip RMIN RMAX R1MAX Lead Size
(mm2/AWG)
(A) (A) (VDC) (VAC RMS) (DCADC)(ACARMS) (W) (A) (s) (Ω) (Ω) (Ω)
RGEF* – 16V
RGEF250 2.5 4.7 16 —100 —1. 0 12.5 5.0 0.0220 0.0350 0.0530 0.205/24
RGEF300 3.0 5.1 16 —100 — 2.3 15.0 1. 0 0.0380 0.0645 0.0975 0.520/20
RGEF400 4.0 6.8 16 —100 — 2.4 20.0 1. 7 0.0210 0.0390 0.0600 0.520/20
RGEF500 5.0 8.5 16 —100 — 2.6 25.0 2.0 0.0150 0.0240 0.0340 0.520/20
RGEF600 6.0 10.2 16 —100 — 2.8 30.0 3.3 0.0100 0.0190 0.0280 0.520/20
RGEF700 7. 0 11. 9 16 —100 — 3.0 35.0 3.5 0.0077 0.0131 0.0200 0.520/20
RGEF800 8.0 13.6 16 —100 — 3.0 40.0 5.0 0.0056 0.0110 0.0175 0.520/20
RGEF900 9.0 15.3 16 —100 — 3.3 45.0 5.5 0.0047 0.0091 0.0135 0.520/20
RGEF1000 10.0 1 7. 0 16 —100 — 3.6 50.0 6.0 0.0040 0.0070 0.0102 0.520/20
RGEF1100 11. 0 18.7 16 —100 — 3.7 55.0 7. 0 0.0037 0.0060 0.0089 0.520/20
RGEF1200 12.0 20.4 16 —100 — 4.2 60.0 7. 5 0.0033 0.0057 0.0086 0.823/18
RGEF1400 14.0 23.8 16 —100 — 4.6 70.0 9.0 0.0026 0.0043 0.0064 0.823/18
Agency Approvals
AGENCY AGENCY FILE NUMBER
E74889
78165
72161783
Notes:
IH : Hold current: maximum current device will pass without interruption in 20°C still air.
IT : Trip current: minimum current that will switch the device from low resistance to
high resistance in 20°C still air.
VMAX : Maximum continuous voltage device can withstand without damage at rated current.
IMAX : Maximum fault current device can withstand without damage at rated voltage.
PD : Power dissipated from device when in the tripped state in 20°C still air.
RMIN : Minimum resistance of device as supplied at 20°C unless otherwise specified.
RMAX : Maximum resistance of device as supplied at 20°C unless otherwise specified.
R1MAX :
Maximum resistance of device when measured one hour post reflow
(surface-mount device) or one hour post trip (radial-leaded device) at 20°C unless
otherwise specified.
* Electrical characteristics determined at 25°C.
RoHS
Additional Information
Datasheet Resources Samples
PolySwitch® Resettable PTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RGEF Series
Temperature Rerating
Maximum Ambient Temperature
-40°C -20°C 0°C 20°C 25°C 40°C 50°C 60°C 70°C 85°C
Hold Current (A)
RGEF – 16V
RGEF250 3.7 3.3 3.0 2.6 2.50 2.2 2.0 1. 8 1. 6 1. 2
RGEF300 4.4 4.0 3.6 3.1 3.00 2.6 2.4 2.1 1. 9 1. 4
RGEF400 5.9 5.3 4.8 4.1 4.00 3.5 3.2 2.8 2.5 1. 9
RGEF500 7. 3 6.6 6.0 5.2 5.00 4.4 4.0 3.6 3.1 2.4
RGEF600 8.8 8.0 7. 2 6.2 6.00 5.2 4.8 4.2 3.8 2.8
RGEF700 10.3 9.3 8.4 7. 3 7. 0 0 6.2 5.6 5.0 4.4 3.3
RGEF800 11. 7 10.7 9.6 8.3 8.00 6.9 6.4 5.6 5.1 3.7
RGEF900 13.2 11. 9 10.7 9.4 9.00 7. 9 7. 2 6.4 5.6 4.2
RGEF1000 14.7 13.3 12.0 10.3 10.00 8.7 8.0 7. 0 6.3 4.7
RGEF1100 16.1 14.6 13.1 11. 5 11. 0 0 9.7 8.8 7. 8 6.9 5.2
RGEF1200 1 7. 6 16.0 14.4 12.4 12.00 10.4 9.6 8.4 7. 6 5.6
RGEF1400 20.5 18.7 16.8 14.5 14.00 12.1 11. 2 9.8 8.9 6.5
-40 -20 020406080
% of Rated Hold and Trip Current
Ambient Temperature (˚C)
200
150
100
50
0
Temperature Rerating Curve
PolySwitch® Resettable PPTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RGEF Series
Physical Specifications
Lead Material
RGEF250 : Tin-plated Copper-clad Steel, 0.205mm2 (24AWG), ø0.51mm/0.020in
RGEF300 to RGEF1100 : Tin-plated Copper, 0.52mm2 (20AWG), ø0.81mm/0.032in
RGEF1200 to RGEF1400 : Tin-plated Copper, 0.82mm2 (18AWG), ø1.0mm/0.04in
Soldering Characteristics Solderability per ANSI/J-STD-002 Category 3
Solder Heat Withstand
RGEF250 and RGEF400 : per IEC 68-2-20, Test Tb, Method 1a, Condition a;
Can withstand 5s at 260°C ±5°C
RGEF500 to RGEF1400 : per IEC 68-2-20, Test Tb, Method 1a, Condition b;
Can withstand 10s at 260°C ±5°C
Insulating Material Cured, Flame-retardant Epoxy Polymer; Meets UL 94V-0
Operation Temperature -40°C~85°C
Note: Devices are not designed to be placed through a reflow process.
Environmental Specifications
Test Conditions Resistance Change
Passive Aging -40°C, 1000 hrs
85°C, 1000 hrs
±5%
±5%
Humidity Aging 85°C, 85% R.H., 1000 hrs ±5%
Thermal Shock 85°C, -40°C (10 Times) ±5%
Solvent Resistance MIL-STD-202, Method 215F No change
Moisture Resistance Level Level 1, J-STD-020
Storage Conditions 40°C max, 70% RH max; devices should remain in original sealed bags prior to use.
Devices may not meet specified values if these storage conditions are exceeded.
Typical Time-to-Trip Curves at 20°C
RGEF (data at 25°C)
A = RGEF250
B = RGEF300
C = RGEF400
D = RGEF500
E = RGEF600
F = RGEF700
G = RGEF800
H = RGEF900
I = RGEF1000
J = RGEF1100
K = RGEF1200
L = RGEF1400
Time-to-Trip (s)
Fault Current (A)
1000
100
10
1
0.1
0.01
0.001 11
01
00
A
A
B
B
C
D
E
F
G
H
I
J
K
L
CD EFGH IJKL
PolySwitch® Resettable PTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RGEF Series
Dimensions and Weights
Part
Number
Dimensions in Millimeters (Inches)
Figure Device Mass (g)
(Only for Reference)
A B C D E F H J
Min Max Min Max Min Max Min Max Min Max Typ Typ Typ
RGEF – 16V
RGEF250 —8.9 —12.8 4.3 5.8 3.18 6.18 —3.0 1.2 1.24 1.2 1,3,4 0.277
(0.35) (0.50) (0.17) (0.23) (0.13) (0.24) (0.12) (0.05) (0.049) (0.05)
RGEF300 6.1 7.1 6.1 11.0 4.3 5.8 7.6 —2.0 3.0 1.2 1.24 1.2 2,3,4 0.323
(0.24) (0.28) (0.24) (0.43) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.05)
RGEF400 7.9 8.9 7.9 12.8 4.3 5.8 7.6 —2.0 3.0 1.2 1.24 1.4 2,3,4 0.417
(0.31) (0.35) (0.31) (0.50) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.06)
RGEF500 9.4 10.4 9.4 14.3 4.3 5.8 7.6 —2.0 3.0 1.2 1.24 1.6 2,3,4 0.540
(0.37) (0.41) (0.37) (0.56) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.06)
RGEF600 9.7 10.7 12.2 17.1 4.3 5.8 7.6 —2.0 3.0 1.2 1.24 1.6 2,3,4 0.604
(0.38) (0.42) (0.48) (0.67) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.06)
RGEF700 10.2 11.2 14.7 19.7 4.3 5.8 7.6 —2.0 3.0 1.2 1.24 1.7 2,3,4 0.701
(0.40) (0.44) (0.58) (0.78) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.07)
RGEF800 11.7 12.7 16.0 20.9 4.3 5.8 7.6 —2.0 3.0 1.2 1.24 1.8 2,3,4 0.829
(0.46) (0.50) (0.63) (0.82) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.07)
RGEF900 13.0 14.0 16.8 21.7 4.3 5.8 7.6 —2.0 3.0 1.2 1.24 2.0 2,3,4 0.887
(0.51) (0.55) (0.66) (0.85) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.08)
RGEF1000 —16.5 21.1 25.2 4.3 5.8 7.6 —2.0 3.0 1.2 1.24 2.0 2,3,4 1.219
(0.65) (0.83) (0.99) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.08)
RGEF1100 16.5 17.5 21.1 26.0 4.3 5.8 7.6 —2.0 3.0 1.2 1.24 2.4 2,3,4 1.408
(0.65) (0.69) (0.83) (1.02) (0.17) (0.23) (0.30) (0.08) (0.12) (0.05) (0.049) (0.09)
RGEF1200 16.4 17.5 22.6 28.0 9.4 10.9 7.6 —2.3 3.5 1.4 1.45 1.5 2,3,4 1.650
(0.65) (0.69) (0.89) (1.10) (0.37) (0.43) (0.30) (0.09) (0.14) (0.06) (0.057) (0.06)
RGEF1400 —23.5 22.6 27.9 9.4 10.9 7.6 —2.3 3.5 1.4 1.45 1.9 2,3,4 2.146
(0.925) (0.89) (1.10) (0.37) (0.43) (0.30) (0.09) (0.14) (0.06) (0.057) (0.08)
Figure 2Figure 1
J
J
A
E
C
H
A
B
D
B
D
B
D
C
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
LC
LC
L
A
B
D
CF
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
LC
LC
L
A
C
Cto
LC
L
C
Cto
LC
L
E E AE
E
E
E
B
D
CF
Cto
LC
LC
LC
L
AE
FF
B
D
C
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
L
A
E
E
E
F
F
F
E
A
B
D
C
Cto
LC
L
J
J
A
E
C
H
A
B
D
B
D
B
D
C
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
LC
LC
L
A
B
D
CF
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
LC
LC
L
A
C
Cto
LC
L
C
Cto
LC
L
E E AE
E
E
E
B
D
CF
Cto
LC
LC
LC
L
AE
FF
B
D
C
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
L
A
E
E
E
F
F
F
E
A
B
D
C
Cto
LC
L
Dimension Figures
J
J
A
E
C
H
A
B
D
B
D
B
D
C
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
LC
LC
L
A
B
D
CF
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
LC
LC
L
A
C
Cto
LC
L
C
Cto
LC
L
E E AE
E
E
E
B
D
CF
Cto
LC
LC
LC
L
AE
F
F
B
D
C
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
L
A
E
E
E
F
F
F
E
A
B
D
C
Cto
LC
L
J
J
A
E
C
H
A
B
D
B
D
B
D
C
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
LC
LC
L
A
B
D
CF
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
LC
LC
L
A
C
Cto
LC
L
C
Cto
LC
L
E E AE
E
E
E
B
D
CF
Cto
LC
LC
LC
L
AE
FF
B
D
C
Cto
LC
LC
LC
L
A
B
D
C
Cto
LC
L
A
E
E
E
F
F
F
E
A
B
D
C
Cto
LC
L
Figure 4Figure 3
PolySwitch® Resettable PPTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RGEF Series
Packaging and Marking Information
Part
Number
Bag
Quantity
Tape and Reel
Quantity
Ammo Pack
Quantity
Standard Package
Quantity
Part
Marking
Agency
Recognition
RGEF – 16V
RGEF250 500 — — 10,000 G2.5 UL, CSA, TÜV
RGEF250-2 — 3,000 — 15,000 G2.5 UL, CSA, TÜV
RGEF250-AP — — 2,000 10,000 G2.5 UL, CSA, TÜV
RGEF300 500 — — 10,000 G3 UL, CSA, TÜV
RGEF300-2 — 2,500 — 12,500 G3 UL, CSA, TÜV
RGEF300-AP — — 2,000 10,000 G3 UL, CSA, TÜV
RGEF400 500 — — 10,000 G4 UL, CSA, TÜV
RGEF400-2 — 2,500 — 12,500 G4 UL, CSA, TÜV
RGEF400-AP — — 2,000 10,000 G4 UL, CSA, TÜV
RGEF500 500 — — 10,000 G5 UL, CSA, TÜV
RGEF500-2 — 2,000 — 10,000 G5 UL, CSA, TÜV
RGEF500-AP — — 2,000 10,000 G5 UL, CSA, TÜV
RGEF600 500 — — 10,000 G6 UL, CSA, TÜV
RGEF600-2 — 2,000 — 10,000 G6 UL, CSA, TÜV
RGEF600-AP — — 2,000 10,000 G6 UL, CSA, TÜV
RGEF700 500 — — 10,000 G7 UL, CSA, TÜV
RGEF700-2 — 1,500 — 7,500 G7 UL, CSA, TÜV
RGEF700-AP — — 1,500 7,500 G7 UL, CSA, TÜV
RGEF800 500 — — 10,000 G8 UL, CSA, TÜV
RGEF800-2 — 1,500 — 7,500 G8 UL, CSA, TÜV
RGEF800-AP — — 1,500 7,500 G8 UL, CSA, TÜV
RGEF900 500 — — 10,000 G9 UL, CSA, TÜV
RGEF900-2 — 1,000 — 5,000 G9 UL, CSA, TÜV
RGEF900-AP — — 1,000 5,000 G9 UL, CSA, TÜV
RGEF1000 250 — — 5,000 G10 UL, CSA, TÜV
RGEF1000-2 — 1,000 — 5,000 G10 UL, CSA, TÜV
RGEF1000-AP — — 1,000 5,000 G10 UL, CSA, TÜV
RGEF1100 250 — — 5,000 G11 UL, CSA, TÜV
RGEF1100-2 — 1,000 — 5,000 G11 UL, CSA, TÜV
RGEF1100-AP — — 1,000 5,000 G11 UL, CSA, TÜV
RGEF1200 250 — — 5,000 G12 UL, CSA, TÜV
RGEF1200-2 — 1,000 — 5,000 G12 UL, CSA, TÜV
RGEF1200-AP — — 1,000 5,000 G12 UL, CSA, TÜV
RGEF1400 250 — — 5,000 G14 UL, CSA, TÜV
RGEF1400-2 — 1,000 — 5,000 G14 UL, CSA, TÜV
RGEF1400-AP — — 1,000 5,000 G14 UL, CSA, TÜV
PolySwitch® Resettable PTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RGEF Series
Part Ordering Number System
RGEF 250 U 2
Packaging
Blank = Packaged in Bags
-1 = 25.4mm (1.0 in) Minimum Lead Length
-2 = Tape and Reel
-AP = Ammo Pack
-X.X = Special Lead Cut Length (in)
Modifier
K = Standard Kinked Lead
B = Special Kinked Lead
S = Straight Lead
U = Uncoated Device
Hold Current Indicator
Product Series
An “F” at the end of product series indicates Pb-free version of product.
Note: Kinked parts are recommended to control the height of the part on the PCB in non-auto PCB applications.
PolySwitch® Resettable PPTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RGEF Series
Tape and Reel Specifications
RGEF devices are available in tape and reel packaging per EIA468–B/IEC60286–2 standards.
See Figures 1 and 2 for details.
Description EIA Mark Dimension (mm) Tolerance
Carrier Tape Width W18 -0.5/+1.0
Hold-Down Tape Width W411 Minimum
Top Distance between Tape Edges W63 Maximum
Sprocket Hole Position W59 -0.5/+0.75
Sprocket Hole Diameter D04 ± 0.2
Abscissa to Plane (Straight Lead) (RGEF250 to RGEF1400) H 18.5 ± 2.5
Abscissa to Plane (Kinked Lead) H016.0 ± 0.5
Abscissa to Top (RGEF250 to RGEF500) H132.2 Maximum
Abscissa to Top* (RGEF600 to RGEF1400) H145.0 Maximum
Overall Width with Lead Protrusion (RGEF250 to RGEF600) C143.2 Maximum
Overall Width with Lead Protrusion (RGEF700 to RGEF1400) C155 Maximum
Overall Width without Lead Protrusion (RGEF250 to RGEF600) C242.5 Maximum
Overall Width without Lead Protrusion (RGEF700 to RGEF1400) C254 Maximum
Lead Protrusion L11. 0 Maximum
Protrusion of Cut-out L 11 Maximum
Protrusion beyond Hold-down Tape I2Not Specified —
Sprocket Hole Pitch P012.7 ± 0.3
Device Pitch (RGEF250 to RGEF700) — 25.4 ± 0.61
Device Pitch (RGEF800 to RGEF1400) — 25.4 ± 0.6
Pitch Tolerance — 20 Consecutive ± 1
Tape Thickness T 0.9 Maximum
Overall Tape and Lead Thickness* (RGEF250 to RGEF1100) T12.0 Maximum
Overall Tape and Lead Thickness* (RGEF1200 to RGEF1400) T12.3 Maximum
Splice Sprocket Hole Alignment — 0 ± 0.3
Body Lateral Deviation h 0 ± 1.0
Body Tape Plane Deviation p 0 ± 1.3
Ordinate to Adjacent Component Lead (RGEF250 to RGEF1100) P13.81 ± 0.7
Ordinate to Adjacent Component Lead (RGEF1200 to RGEF1400) P17.62 ± 0.7
Lead Spacing* (RGEF250 to RGEF1100) F 5.05 ± 0.75
Lead Spacing* (RGEF1200 to RGEF1400) F 10.15 ± 0.75
Reel Width (RGEF250 to RGEF600) W256.0 Maximum
Reel Width* (RGEF700 to RGEF1400) W263.5 Maximum
Reel Diameter A 370.0 Maximum
Space between Flanges* (RGEF250 to RGEF600) W148.0 Maximum
Space between Flanges* (RGEF700 to RGEF400) W155.0 Maximum
Arbor Hold Diameter C 26.0 ± 12.0
Core Diameter* N 91.0 Maximum
Box — 64/372/362 Maximum
Consecutive Missing Places — None —
Empty Places per Reel — 0.1% Maximum
*Differs from EIA specification.
PolySwitch® Resettable PTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RGEF Series
w1
n
a
c
w2
Cross Section
Direction of
Unreeling
Reel
Type
Upper Side
Lower Side
Optional Shape: Circular or Polygonal
h
H1P1
D4
H0
H1
C1
C2
F
AB
Reference Plane
Direction of Unreeling
Cross Section A-B
W5
H
W
t
P0D0
I2
L
L1
hpp
Tape and Reel Diagrams
Figure 1
Figure 2
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each
product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.
WARNING
• Users should independently evaluate the suitability of and test each product selected for their own application.
• Operation beyond the maximum ratings or improper use may result in device damage and possible electrical arcing and flame.
• These devices are intended for protection against damage caused by occasional overcurrent or overtemperature fault conditions and should not be used when
repeated fault conditions or prolonged trip events are anticipated.
• Contamination of the PPTC material with certain silicone-based oils or some aggressive solvents can adversely impact the performance of the devices.
• Device performance can be impacted negatively if devices are handled in a manner inconsistent with recommended electronic, thermal, and mechanical
procedures for electronic components.
• PPTC devices are not recommended for installation in applications where the device is constrained such that its PTC properties are inhibited, for example in rigid
potting materials or in rigid housings, which lack adequate clearance to accommodate device expansion.
• Operation in circuits with a large inductance can generate a circuit voltage (Ldi/dt) above the rated voltage of the device.
