PolySwitch® Resettable PPTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RXEF Series
RXEF Series RoHS
Description
Littelfuse PolySwitch radial-leaded devices represent the
most comprehensive and complete set of PPTC products
available in the industry today. RXEF series offers low hold
currents (down to 50mA) and high voltage rating
(up to 72V).
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
Agency Approvals
AGENCY AGENCY FILE NUMBER
E74889
78165
72161785
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.
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)
RXEF – 60V
RXEF005 0.05 0.10 60 – 40 – 0.22 0.25 5.0 7. 3 11. 10 20.00 0.128/26
RXEF010 0.10 0.20 60 – 40 – 0.38 0.50 4.0 2.5 4.50 7.50 0.205/24
RXEF017 0.17 0.34 60 – 40 – 0.48 0.85 3.0 3.3 5.21 8.00 0.205/24
Additional Information
Datasheet Resources Samples
PolySwitch® Resettable PTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RXEF Series
Electrical Characteristics (Cont’d)
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)
RXEF – 72V
RXEF020 0.20 0.40 72 72 40 40 0.41 1. 0 0 2.2 1.83 2.75 4.40 0.205/24
RXEF025 0.25 0.50 72 72 40 40 0.45 1.25 2.5 1.25 1.95 3.00 0.205/24
RXEF030 0.30 0.60 72 72 40 40 0.49 1.50 3.0 0.88 1.33 2.10 0.205/24
RXEF040 0.40 0.80 72 72 40 40 0.56 2.00 3.8 0.55 0.86 1.29 0.205/24
RXEF050 0.50 1. 0 0 72 72 40 40 0.77 2.50 4.0 0.50 0.77 1. 17 0.205/24
RXEF065 0.65 1.30 72 72 40 40 0.88 3.25 5.3 0.31 0.48 0.72 0.205/24
RXEF075 0.75 1.50 72 72 40 40 0.92 3.75 6.3 0.25 0.40 0.60 0.205/24
RXEF090 0.90 1.80 72 72 40 40 0.99 4.50 7. 2 0.20 0.31 0.47 0.205/24
RXEF110 1. 10 2.20 72 72 40 40 1.50 5.50 8.2 0.15 0.25 0.38 0.520/20
RXEF135 1.35 2.70 72 72 40 40 1.70 6.75 9.6 0.12 0.19 0.30 0.520/20
RXEF160 1.60 3.20 72 72 40 40 1.90 8.00 11. 4 0.09 0.14 0.22 0.520/20
RXEF185 1.85 3.70 72 72 40 40 2.10 9.25 12.6 0.08 0.12 0.19 0.520/20
RXEF250 2.50 5.00 72 72 40 40 2.50 12.50 15.6 0.05 0.08 0.13 0.520/20
RXEF300 3.00 6.00 72 72 40 40 2.80 15.00 19.8 0.04 0.06 0.10 0.520/20
RXEF375 3.75 7.50 72 72 40 40 3.20 18.75 24.0 0.03 0.05 0.08 0.520/20
Typical Time-to-Trip Curves at 20°C
RXEF
A = RXEF005
B = RXEF010
C = RXEF017
D = RXEF020
E = RXEF025
F = RXEF030
G = RXEF040
H = RXEF050
I = RXEF065
J = RXEF075
K = RXEF090
L = RXEF110
M = RXEF135
N = RXEF160
O = RXEF185
P = RXEF250
Q = RXEF300
R = RXEF375
Time-to-Trip (s)
Fault Current (A)
1000
100
10
1
0.1
0.01
0.001
0.1 10
1100
A
A
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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.
PolySwitch® Resettable PPTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RXEF 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)
RXEF – 60V
RXEF005 0.078 0.068 0.06 0.05 0.048 0.04 0.035 0.032 0.027 0.02
RXEF010 0.160 0.140 0.11 0.10 0.096 0.08 0.072 0.067 0.050 0.04
RXEF017 0.260 0.230 0.21 0.17 0.160 0.14 0.120 0.110 0.090 0.07
RXEF – 72V
RXEF020 0.31 0.27 0.24 0.20 0.19 0.16 0.14 0.13 0.11 0.08
RXEF025 0.39 0.34 0.30 0.25 0.24 0.20 0.18 0.16 0.14 0.10
RXEF030 0.47 0.41 0.36 0.30 0.29 0.24 0.22 0.20 0.16 0.12
RXEF040 0.62 0.54 0.48 0.40 0.38 0.32 0.29 0.25 0.22 0.16
RXEF050 0.78 0.68 0.60 0.50 0.48 0.41 0.36 0.32 0.27 0.20
RXEF065 1. 01 0.88 0.77 0.65 0.62 0.53 0.47 0.41 0.35 0.26
RXEF075 1. 16 1.02 0.89 0.75 0.72 0.61 0.54 0.47 0.41 0.30
RXEF090 1.40 1.22 1.07 0.90 0.86 0.73 0.65 0.57 0.49 0.36
RXEF110 1.71 1.50 1.31 1. 10 1.06 0.89 0.79 0.69 0.59 0.44
RXEF135 2.09 1.84 1.61 1.35 1.30 1.09 0.97 0.85 0.73 0.54
RXEF160 2.48 2.18 1.90 1.60 1.54 1.30 1. 1 5 1. 01 0.86 0.64
RXEF185 2.87 2.52 2.20 1.85 1.78 1.50 1.33 1. 17 1. 0 0 0.74
RXEF250 3.88 3.40 2.98 2.50 2.40 2.03 1.80 1.58 1.35 1. 0 0
RXEF300 4.65 4.08 3.57 3.00 2.88 2.43 2.16 1.89 1.62 1.20
RXEF375 5.81 5.10 4.46 3.75 3.60 3.04 2.70 2.36 2.03 1.50
% of Rated Hold and Trip Current
Ambient Temperature (˚C)
200
150
100
50
0
-40 -20 020406080
Temperature Rerating Curve
PolySwitch® Resettable PTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RXEF Series
Physical Specifications
Lead Material
RXEF005: Tin-plated Nickel-copper Alloy, 0.128mm2 (26AWG), ø0.40mm (0.016in)
RXEF010: Tin-plated Nickel-copper Alloy, 0.205mm2 (24AWG), ø0.51mm (0.020in)
RXEF017 to 040: Tin-plated Copper-clad Steel, 0.205mm2 (24AWG), ø0.51mm (0.020in)
RXEF050 to 090 : Tin-plated Copper, 0.205mm2 (24AWG), ø0.51mm (0.020in)
RXEF110 to 375: Tin-plated Copper, 0.52mm2 (20AWG), ø0.81mm (0.032in)
Soldering Characteristics Solderability per ANSI/J-STD-002 Category 3
RXEF005, RXEF010 Meet ANSI/J-STD-002 Category 1
Solder Heat Withstand
RXEF005- RXEF025: per IEC-STD 68-2-20, Test Tb, Method 1a, Condition a;
Can Withstand 5s at 260°C ±5°C
All Other Sizes: per IEC-STD 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 ±10%
Thermal Shock 85°C to -40°C 10 times ±10%
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.
PolySwitch® Resettable PPTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RXEF Series
Dimensions and Weights
Part
Number
Dimensions in Millimeters (Inches)
Figure Device Mass (g)
(Only for Reference)
A B C D E H J
Min Max Min Max Min Max Min Max Min Max Typ Typ
RXEF – 60V
RXEF005 —8.0 —8.3 4.3 5.8 7.6 — — 3.0 1.07 1. 0 1,4,5 0.069
(0.32) (0.33) (0.17) (0.23) (0.30) (0.12) (0.042) (0.04)
RXEF010 — 7.4 — 11.6 4.3 5.8 7.6 — — 3.0 1.07 1. 0 2,4,5 0.128
(0.29) (0.46) (0.17) (0.23) (0.30) (0.12) (0.042) (0.04)
RXEF017 — 7.4 — 12.7 4.3 5.8 7.6 — — 3.0 1.68 1. 7 2,4,5 0.174
(0.29) (0.50) (0.17) (0.23) (0.30) (0.12) (0.066) (0.07)
RXEF – 72V
RXEF020 — 7.4 — 11.7 4.3 5.8 7.6 — — 3.0 1. 17 1. 0 2,4,5 0.119
(0.29) (0.46) (0.17) (0.23) (0.30) (0.12) (0.046) (0.04)
RXEF025 — 7.4 — 12.7 4.3 5.8 7.6 — —3.0 1. 17 1. 0 2,4,5 0.130
(0.29) (0.50) (0.17) (0.23) (0.30) (0.12) (0.046) (0.04)
RXEF030 — 7.4 — 12.7 4.3 5.8 7.6 — — 3.0 1. 17 1. 0 2,4,5 0.143
(0.29) (0.50) (0.17) (0.23) (0.30) (0.12) (0.046) (0.04)
RXEF040 — 7.6 — 13.5 4.3 5.8 7.6 — — 3.0 1. 17 1. 2 2,4,5 0.202
(0.30) (0.53) (0.17) (0.23) (0.30) (0.12) (0.046) (0.05)
RXEF050 — 7.9 — 13.7 4.3 5.8 7.6 — — 3.0 1. 17 1. 2 2,4,5 0.210
(0.31) (0.54) (0.17) (0.23) (0.30) (0.12) (0.046) (0.05)
RXEF065 — 9.4 — 14.5 4.3 5.8 7.6 — — 3.0 1. 17 1. 5 2,4,5 0.277
(0.37) (0.57) (0.17) (0.23) (0.30) (0.12) (0.046) (0.06)
RXEF075 — 10.2 — 15.2 4.3 5.8 7.6 — — 3.0 1. 17 1. 5 2,4,5 0.310
(0.40) (0.60) (0.17) (0.23) (0.30) (0.12) (0.046) (0.06)
RXEF090 — 11.2 — 15.8 4.3 5.8 7.6 — — 3.0 1. 17 1. 5 2,4,5 0.365
(0.44) (0.62) (0.17) (0.23) (0.30) (0.12) (0.046) (0.06)
Figure 2
Figure 5
Figure 3Figure 1
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Dimension Figures
PolySwitch® Resettable PTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RXEF Series
Dimensions and Weights (Cont’d)
Part
Number
Dimensions in Millimeters (Inches)
Figure Device Mass (g)
(Only for Reference)
A B C D E H J
Min Max Min Max Min Max Min Max Min Max Typ Typ
RXEF – 72V
RXEF110 — 12.8 — 17.5 4.3 5.8 7.6 — — 3.0 1.37 1. 2 3,4,5 0.546
(0.50) (0.69) (0.17) (0.23) (0.30) (0.12) (0.054) (0.05)
RXEF135 — 14.5 — 19.1 4.3 5.8 7.6 — — 3.0 1.37 1. 2 3,4,5 0.653
(0.57) (0.75) (0.17) (0.23) (0.30) (0.12) (0.054) (0.05)
RXEF160 — 16.3 — 20.8 4.3 5.8 7.6 — — 3.0 1.37 1. 5 3,4,5 0.684
(0.64) (0.82) (0.17) (0.23) (0.30) (0.12) (0.054) (0.06)
RXEF185 — 17.5 — 22.4 4.3 5.8 7.6 — — 3.0 1.37 1. 5 3,4,5 0.808
(0.69) (0.88) (0.17) (0.23) (0.30) (0.12) (0.054) (0.06)
RXEF250 —20.8 — 25.4 9.4 10.9 7.6 — — 3.0 1.37 1. 7 3,4,5 1.139
(0.82) (1.00) (0.37) (0.43) (0.30) (0.12) (0.054) (0.07)
RXEF300 — 23.9 — 28.6 9.4 10.9 7.6 — — 3.0 1.37 1. 7 3,4,5 1.379
(0.94) (1.13) (0.37) (0.43) (0.30) (0.12) (0.054) (0.07)
RXEF375 — 27.2 — 31.8 9.4 10.9 7.6 — — 3.0 1.37 1. 7 3,4,5 1.708
(1.07) (1.25) (0.37) (0.43) (0.30) (0.12) (0.054) (0.07)
Figure 2
Figure 5
Figure 3Figure 1
Figure 4
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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
PolySwitch® Resettable PPTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RXEF Series
Packaging and Marking Information
Part
Number
Bag
Quantity
Tape and Reel
Quantity
Ammo Pack
Quantity
Standard Package
Quantity
Part
Marking
Agency
Recognition
RXEF – 60V
RXEF005 500 — — 10,000 — UL, CSA, TÜV, CQC
RXEF005-2 — 3,000 — 15,000 — UL, CSA, TÜV, CQC
RXEF005-AP — — 2,000 10,000 — UL, CSA, TÜV, CQC
RXEF010 500 — — 10,000 X10 UL, CSA, TÜV, CQC
RXEF010-2 — 3,000 — 15,000 X10 UL, CSA, TÜV, CQC
RXEF010-AP — — 2,000 10,000 X10 UL, CSA, TÜV, CQC
RXEF017 500 — — 10,000 X17 UL, CSA, TÜV, CQC
RXEF017-2 — 2,500 — 12,500 X17 UL, CSA, TÜV, CQC
RXEF017-AP — — 2,000 10,000 X17 UL, CSA, TÜV, CQC
RXEF – 72V
RXEF020 500 — — 10,000 X20 UL, CSA, TÜV, CQC
RXEF020-2 — 3,000 — 15,000 X20 UL, CSA, TÜV, CQC
RXEF020-AP — — 2,000 10,000 X20 UL, CSA, TÜV, CQC
RXEF025 500 — — 10,000 X25 UL, CSA, TÜV, CQC
RXEF025-2 — 3,000 — 15,000 X25 UL, CSA, TÜV, CQC
RXEF025-AP — — 2,000 10,000 X25 UL, CSA, TÜV, CQC
RXEF030 500 — — 10,000 X30 UL, CSA, TÜV, CQC
RXEF030-2 — 3,000 — 15,000 X30 UL, CSA, TÜV, CQC
RXEF030-AP — — 2,000 10,000 X30 UL, CSA, TÜV, CQC
RXEF040 500 — — 10,000 X40 UL, CSA, TÜV, CQC
RXEF040-2 — 3,000 — 15,000 X40 UL, CSA, TÜV, CQC
RXEF040-AP — — 2,000 10,000 X40 UL, CSA, TÜV, CQC
RXEF050 500 — — 10,000 X50 UL, CSA, TÜV, CQC
RXEF050-2 — 3,000 — 15,000 X50 UL, CSA, TÜV, CQC
RXEF050-AP — — 2,000 10,000 X50 UL, CSA, TÜV, CQC
RXEF065 500 — — 10,000 X65 UL, CSA, TÜV, CQC
RXEF065-2 — 3,000 — 15,000 X65 UL, CSA, TÜV, CQC
RXEF065-AP — — 2,000 10,000 X65 UL, CSA, TÜV, CQC
RXEF075 500 — — 10,000 X75 UL, CSA, TÜV, CQC
RXEF075-2 — 3,000 — 15,000 X75 UL, CSA, TÜV, CQC
RXEF075-AP — — 2,000 10,000 X75 UL, CSA, TÜV, CQC
RXEF090 500 — — 10,000 X90 UL, CSA, TÜV, CQC
RXEF090-2 — 3,000 — 15,000 X90 UL, CSA, TÜV, CQC
RXEF090-AP — — 2,000 10,000 X90 UL, CSA, TÜV, CQC
RXEF110 500 — — 10,000 X110 UL, CSA, TÜV, CQC
RXEF110-2 — 1,500 — 7,500 X110 UL, CSA, TÜV, CQC
RXEF110-AP — — 1,000 5,000 X110 UL, CSA, TÜV, CQC
PolySwitch® Resettable PTCs
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/22/18
Radial Leaded > RXEF Series
Packaging and Marking Information (Cont’d)
Part
Number
Bag
Quantity
Tape and Reel
Quantity
Ammo Pack
Quantity
Standard Package
Quantity
Part
Marking
Agency
Recognition
RXEF – 72V
RXEF135 500 — — 10,000 X135 UL, CSA, TÜV, CQC
RXEF135-2 — 1,500 — 7,500 X135 UL, CSA, TÜV, CQC
RXEF135-AP — — 1,000 5,000 X135 UL, CSA, TÜV, CQC
RXEF160 500 — — 10,000 X160 UL, CSA, TÜV, CQC
RXEF160-2 — 1,500 — 7,500 X160 UL, CSA, TÜV, CQC
RXEF160-AP — — 1,000 5,000 X160 UL, CSA, TÜV, CQC
RXEF185 500 — — 10,000 X185 UL, CSA, TÜV, CQC
RXEF185-2 — 1,500 — 7,500 X185 UL, CSA, TÜV, CQC
RXEF185-AP — — 1,000 5,000 X185 UL, CSA, TÜV, CQC
RXEF250 250 — — 5,000 X250 UL, CSA, TÜV, CQC
RXEF250-2 — 1,000 — 5,000 X250 UL, CSA, TÜV, CQC
RXEF250-AP — — 1,000 5,000 X250 UL, CSA, TÜV, CQC
RXEF300 250 — — 5,000 X300 UL, CSA, TÜV, CQC
RXEF300-2 — 1,000 — 5,000 X300 UL, CSA, TÜV, CQC
RXEF300-AP — — 1,000 5,000 X300 UL, CSA, TÜV, CQC
RXEF375 250 — — 5,000 X375 UL, CSA, TÜV, CQC
Part Ordering Number System
RXEF 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 > RXEF Series
Tape and Reel Specifications
RXEF 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) (RXEF110 To RXEF300) H 18.5 ± 2.5
Abscissa to Plane (Kinked Lead) (RXEF010 To RXEF090) H016.0 ± 0.5
Abscissa to Top (RXEF010 To RXEF090) H132.2 Maximum
Abscissa to Top* (RXEF110 To RXEF300) H147.5 Maximum
Overall Width with Lead Protrusion (RXEF010 To RXEF090) C143.2 Maximum
Overall Width with Lead Protrusion* (RXEF110 To RXEF300) C158 Maximum
Overall Width without Lead Protrusion (RXEF010 To RXEF090) C242.5 Maximum
Overall Width without Lead Protrusion* (RXEF110 To RXEF300) C257.0 Maximum
Lead Protrusion L11. 0 Maximum
Protrusion of Cut-Out L 11. 0 Maximum
Protrusion beyond Hold-down Tape I2Not Specified —
Sprocket Hole Pitch P012.7 ± 0.3
Device Pitch (RXEF010 To RXEF090) — 12.7 ± 0.3
Device Pitch (RXEF110 To RXEF300) — 25.4 ± 0.61
Pitch Tolerance — 20 Consecutive ± 1
Tape Thickness T 0.9 Maximum
Overall Tape and Lead Thickness (RXEF010 To RXEF090) T11. 5 Maximum
Overall Tape and Lead Thickness (RXEF110 To RXEF300) 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 (RXEF010 To RXEF185) P13.81 ± 0.7
Ordinate to Adjacent Component Lead (RXEF250 To RXEF300) P17.62 ± 0.7
Lead Spacing* (RXEF010 To RXEF185) F 5.05 ± 0.75
Lead Spacing* (RXEF250 To RXEF300) F 10.15 ± 0.75
Reel Width (RXEF010 To RXEF090) W256.0 Maximum
Reel Width* (RXEF110 To RXEF300) W263.5 Maximum
Reel Diameter A 370.0 Maximum
Space between Flanges* (RXEF010 To RXEF090) W148.0 Maximum
Space between Flanges* (RXEF110 To RXEF300) 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 > RXEF 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.
