PPTC Datasheet
RXEF Series
Radial Leaded
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 & Benefits
■ 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
■ UL Recognized to UL 1434
■ CSA Approved to CSA TIL No. CA-3A
Additional Information
■ TUV Approved to EN 60730-1
■ CQC Approved to GB 8898, GB/T 7153, GB 14536.1
Applications
Resources
Accessories
Samples
Agency Approvals
Agency
Agency File/Certificate Number
E74889
■ Satellite video receivers
■ CD-ROMs
■ Industrial controls
■ Game machines
■ Transformers
■ Battery packs
■ Computer motherboards
■ Phones
■ Modems
■ Fax machines
■ USB hubs, ports and
peripherals
■ Analog and digital line cards
■ Printers
■ IEEE 1394 ports
78165
16001159722
72161785
Electrical Characteristics
Part
Number
Ordering Part
Number
IH
IT
(A)
(A)
VMAX
(VDC)
IMAX
(VAC RMS)
(DCADC)
PD Typ
(ACARMS)
(W)
Max Time-to-trip
(A)
(s)
RMIN
RMAX
R1MAX
(Ω)
(Ω)
(Ω)
Lead Size
(mm2/AWG)
RXEF – 60V
RXEF005 RF2577-000 0.05
0.10
60
–
40
–
0.22
0.25
5.0
7.3
11.10
20.00
0.128/26
RXEF010 RF2579-000 0.10
0.20
60
–
40
–
0.38
0.50
4.0
2.5
4.50
7.50
0.205/24
RXEF017 RF2563-000 0.17
0.34
60
–
40
–
0.48
0.85
3.0
3.3
5.21
8.00
0.205/24
Notes:
IH
: Hold current: maximum current device will pass without interruption in 20°C still air.
RMIN : Minimum resistance of device as supplied at 20°C unless otherwise specified.
I T
: Trip current: minimum current that will switch the device from low resistance to
high resistance in 20°C still air.
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.
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
* Electrical characteristics determined at 25°C.
: Power dissipated from device when in the tripped state in 20°C still air.
1
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 09/21/22
PPTC Datasheet
RXEF Series
Radial Leaded
Electrical Characteristics (Cont’d)
Part
Number
Ordering Part
Number
IH
IT
(A)
(A)
VMAX
(VDC)
IMAX
(VAC RMS)
(DCADC)
PD Typ
(ACARMS)
RMIN
RMAX
R1MAX
(W)
Max Time-to-trip
(A)
(s)
(Ω)
(Ω)
(Ω)
1.83
2.75
4.40
0.205/24
Lead Size
(mm2/AWG)
RXEF – 72V
RXEF020 RF2564-000 0.20
0.40
72
72
40
40
0.41
1.00
2.2
RXEF025 RF2628-000 0.25
0.50
72
72
40
40
0.45
1.25
2.5
1.25
1.95
3.00
0.205/24
RXEF030 RF2565-000 0.30
0.60
72
72
40
40
0.49
1.50
3.0
0.88
1.33
2.10
0.205/24
RXEF040 RF2566-000 0.40
0.80
72
72
40
40
0.56
2.00
3.8
0.55
0.86
1.29
0.205/24
RXEF050 RF2567-000
0.50
1.00
72
72
40
40
0.77
2.50
4.0
0.50
0.77
1.17
0.205/24
RXEF065 RF2568-000 0.65
1.30
72
72
40
40
0.88
3.25
5.3
0.31
0.48
0.72
0.205/24
RXEF075 RF2569-000 0.75
1.50
72
72
40
40
0.92
3.75
6.3
0.25
0.40
0.60
0.205/24
RXEF090 RF2571-000
0.90
1.80
72
72
40
40
0.99
4.50
7.2
0.20
0.31
0.47
0.205/24
RXEF110 RF2623-000
1.10
2.20
72
72
40
40
1.50
5.50
8.2
0.15
0.25
0.38
0.520/20
RXEF135 RF2640-000
1.35
2.70
72
72
40
40
1.70
6.75
9.6
0.12
0.19
0.30
0.520/20
RXEF160 RF2637-000
1.60
3.20
72
72
40
40
1.90
8.00
11.4
0.09
0.14
0.22
0.520/20
RXEF185 RF2635-000
1.85
3.70
72
72
40
40
2.10
9.25
12.6
0.08
0.12
0.19
0.520/20
RXEF250 RF2649-000 2.50
5.00
72
72
40
40
2.50
12.50
15.6
0.05
0.08
0.13
0.520/20
RXEF300 RF2650-000 3.00
6.00
72
72
40
40
2.80
15.00
19.8
0.04
0.06
0.10
0.520/20
RXEF375 RF2647-000
7.50
72
72
40
40
3.20
18.75
24.0
0.03
0.05
0.08
0.520/20
3.75
Notes:
IH
: Hold current: maximum current device will pass without interruption in 20°C still air.
RMIN : Minimum resistance of device as supplied at 20°C unless otherwise specified.
I T
: Trip current: minimum current that will switch the device from low resistance to
high resistance in 20°C still air.
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.
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
* Electrical characteristics determined at 25°C.
: Power dissipated from device when in the tripped state in 20°C still air.
Typical Time-to-Trip Curves at 20°C
1000
J = RXEF075
K = RXEF090
L = RXEF110
M = RXEF135
N = RXEF160
O = RXEF185
P = RXEF250
Q = RXEF300
R = RXEF375
B
C D E F G H I J K L MNO P Q R
100
A
10
Time-to-Trip (s)
RXEF
A = RXEF005
B = RXEF010
C = RXEF017
D = RXEF020
E = RXEF025
F = RXEF030
G = RXEF040
H = RXEF050
I = RXEF065
R
Q
P
1
0.1
0.01
A
0.001
0.1
1
B
10C D E F
G
O
N
M
L
K
J
I
H
100
Fault Current (A)
2
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 09/21/22
PPTC Datasheet
RXEF Series
Radial Leaded
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
0.027
0.02
Hold Current (A)
RXEF – 60V
RXEF005
0.078
0.068
0.06
0.05
0.048
0.04
0.035
0.032
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
0.14
0.13
0.11
0.08
RXEF – 72V
RXEF020
0.31
0.27
0.24
0.20
0.19
0.16
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
1.15
1.01
0.86
0.64
RXEF185
2.87
2.52
2.20
1.85
1.78
1.50
1.33
1.17
1.00
0.74
RXEF250
3.88
3.40
2.98
2.50
2.40
2.03
1.80
1.58
1.35
1.00
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
Temperature Rerating Curve
% of Rated Hold and Trip Current
200
150
100
50
0
-40
-20
0
20
40
60
80
Ambient Temperature (˚C)
3
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 09/21/22
PPTC Datasheet
RXEF Series
Radial Leaded
Physical Specifications
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)
Lead Material
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
Solder Heat Withstand
Solderability per ANSI/J-STD-002 Category 3
RXEF005, RXEF010 Meet ANSI/J-STD-002 Category 1
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
-40°C, 1000 hrs
±5%
85°C, 1000 hrs
±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.
Passive Aging
4
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 09/21/22
A
A E
A
B
AE
E
A
A
RXEF Series
B
B
E
E
A
E
B
B
B
D
D
D
A
D
A
E
E
A
E
D
PPTC
Datasheet
E
C
CL to CL
F
CL CL
B
B
B
A
E
D
D
D
C
CL to CL
Radial Leaded
D
D
F
C
CL toCLCL CL
C F
CL toCC
LL CL
C
CL to CL
D
F
C
CL to CL
C
CL to CL
CL CL
C
CL to CL
C
CL toBCL
C
CL to CL
F
CL CL
B
D
A
E
C
F
CL CL
CL to CL
C
CL to CL
B
Dimension Figures
A E
A
AE
A E
A
E
A E
D
A
E
A
C
CL to CL
B
B
B
D
D
D
C F
CL toCLCL CL
C
CL to CL
C F
CL toCLCLCL
B
B
A E
E
J
F
CL CL
B
B
D
E
B
C
CL to CL
B
F
CL CL J
E
Figure 4
D
D
C F
CL to C
L CL
C
CL to CL
F
CL CL
Figure 1
C F
CL CL
CL toCL
D
D
D
D
A
J
C F
CL to CL CL
J
C
CL to CL
F
CL CL
Figure 2
C F
C
CL to C
LL CL
Figure 3
F
CL CL
A
E
C
E
H
Figure 5
A E
A
A E
A E
A
E
A E
A E
A
E
A E
E
B
Dimensions and Weights
B
B
D
C F
C
CL to C
LL CL
C
CL to CL
A
Min D
C F
CL toCLCLCL
8.0
(0.32)
RXEF010
—
7.4
(0.29)
7.4
(0.29)
—
J
E
Max
D
Min
D
D Max
C F
CL to CL
CL CL
Min
D
8.3
(0.33)
4.3
(0.17)
5.8
7.6
(0.23) (0.30)
—
11.6
(0.46)
4.3
(0.17)
5.8
7.6
(0.23) (0.30)
—
J
12.7
C
(0.50)
E
A
Min
B
CL CL
C
CL to CL
—
—
C
—
—
D
A
CL to CL
A
4.3 C 5.8
7.6
C
(0.17) (0.23) (0.30)
E
Max
H
D
Max
RXEFF– 60V
C F
CL to CL CL
—
A
E
H
J
TypD
Typ
C F
CL to CL CL
3.0
1.07
(0.12) (0.042)
A E
3.0
1.07
(0.12) (0.042)
B
B
—
H
—
3.0
1.68
(0.12) (0.066)
—
3.0
1.17
(0.12)C (0.046)
—
7.4
(0.29)
—
12.7
(0.50)
4.3
(0.17)
5.8
7.6
(0.23) (0.30)
—
—
3.0
1.17
(0.12) (0.046)
A ERXEF030A E
—
7.4E
(0.29)
—
12.7
(0.50)
4.3
(0.17)
5.8
7.6
(0.23) (0.30)
—
—
RXEF040
B
—
7.6
(0.30)
—
13.5
(0.53)
4.3
(0.17)
5.8
7.6
(0.23) (0.30)
—
RXEF050
—
7.9
(0.31)
—
13.7
(0.54)
4.3
(0.17)
5.8
7.6
(0.23) (0.30)
—
9.4
(0.37)
—
14.5
(0.57)
4.3
(0.17)
RXEF075
—
10.2
(0.40)
—
15.2
(0.60)
RXEF090
—
11.2
(0.44)
—
15.8
(0.62)
C
D
RXEF065
CL to CL
C
CL to CL
Figure C
C F
CL to CC
LL CL
1.0
(0.04)
F
CL CL
1,4,5
A E
1.0
(0.04)
1.7
(0.07)
Device Mass (g)
CL to CL (Only for Reference)
D
4.3
(0.17)
5.8
7.6
(0.23) (0.30)
—
D
RXEF025
D
—
11.7
(0.46)
D
—
B
D
0.069
E
2,4,5
0.128
B
2,4,5
0.174
H
RXEF – 72V
RXEF020
D
CL to CL
C
CL to CL
C
B
E
7.4
(0.29)
B
C
Min
F
CL CL
—
J
A
Max
RXEF005
RXEF017
J
J
B
B
B
B
Dimensions in Millimeters (Inches)
A
Part
Number
D
B
B
B
D
1.0
(0.04)
C
2,4,5
0.119
1.0
(0.04)
2,4,5
0.130
3.0
1.17
(0.12) (0.046)
1.0
(0.04)
2,4,5
0.143
—
3.0
1.17
(0.12) (0.046)
1.2
(0.05)
2,4,5
0.202
—
—
3.0
1.17
(0.12) (0.046)
1.2
(0.05)
2,4,5
0.210
5.8
7.6
(0.23) (0.30)
—
—
3.0
1.17
(0.12) (0.046)
1.5
(0.06)
2,4,5
0.277
4.3
(0.17)
5.8
7.6
(0.23) (0.30)
—
—
3.0
1.17
(0.12) (0.046)
1.5
(0.06)
2,4,5
0.310
4.3
(0.17)
5.8
7.6
(0.23) (0.30)
—
—
3.0
1.17
(0.12) (0.046)
1.5
(0.06)
2,4,5
0.365
C
CL to CL
5
CL to CL
CL to CL
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 09/21/22
A
A E
A
B
AE
E
A
A
RXEF Series
B
B
E
A
E
E
B
B
B
D
D
D
A
D
A
E
E
A
E
D
PPTC
Datasheet
E
C
CL to CL
F
CL CL
B
B
B
A
E
D
D
D
C
CL to CL
Radial Leaded
D
D
F
C
CL toCLCL CL
C F
CL toCC
LL CL
C
CL to CL
D
F
C
CL to CL
C
CL to CL
CL CL
C
CL to CL
C
CL toBCL
C
CL to CL
F
CL CL
B
D
A
E
C
F
CL CL
CL to CL
C
CL to CL
B
Dimension Figures
A E
A
AE
A E
A
E
A E
D
A
E
A
C
CL to CL
B
B
B
D
D
D
C F
CL toCLCL CL
C
CL to CL
C F
CL toCLCLCL
B
B
A E
E
B
D
E
J
F
CL CL
B
B
C
F
CL CL J
CL to CL
B
E
Figure 4
D
D
C F
CL to C
L CL
C
CL to CL
F
CL CL
Figure 1
C F
CL CL
CL toCL
D
D
D
D
A
J
C F
CL to CL CL
J
C
CL to CL
F
CL CL
Figure 2
C F
C
CL to C
LL CL
Figure 3
F
CL CL
A
E
C
E
H
Figure 5
A E
A
A E
A E
A
E
A E
A E
A
E
A E
E
B
Dimensions and Weights (Cont’d)
B
B
D
C F
C
CL to C
LL CL
C
CL to CL
A
Min D
C F
CL toCLCLCL
12.8
(0.50)
RXEF135
—
14.5
(0.57)
16.3
(0.64)
—
J
C
CL to CL
E
C
Max
D
Min
C F
CL to CL
CL CL
Min
D
—
17.5
(0.69)
4.3
(0.17)
5.8
7.6
(0.23) (0.30)
—
19.1
(0.75)
4.3
(0.17)
5.8
7.6
(0.23) (0.30)
A
—
J
20.8
C
(0.82)
E
A
Max
Min
B
CL CL
C
CL to CL
—
—
C
—
—
D
A
CL to CL
A
4.3 C 5.8
7.6
C
(0.17) (0.23) (0.30)
E
E
H
D
Max
RXEFF– 72V
C F
CL to CL CL
H
H
J
TypD
Typ
C F
CL to CL CL
3.0
1.37
(0.12) (0.054)
A E
3.0
1.37
(0.12) (0.054)
B
—
D
E
D
D Max
B
B
Figure C
D
C F
CL to CC
LL CL
1.2
(0.05)
—
3.0
1.37
(0.12) (0.054)
1.5
(0.06)
H
F
CL CL
3,4,5
A E
1.2
(0.05)
Device Mass (g)
CL to CL (Only for Reference)
0.546
E
3,4,5
0.653
B
3,4,5
0.684
RXEF185
—
17.5
(0.69)
—
22.4
(0.88)
4.3
(0.17)
5.8
7.6
(0.23) (0.30)
—
—
3.0
1.37
D
D
(0.12) (0.054)
1.5
(0.06)
D3,4,5
0.808
RXEF250
—
20.8
(0.82)
—
25.4
(1.00)
9.4
10.9
7.6
(0.37) (0.43) (0.30)
—
C
—
CL to CL
3.0 C 1.37
CL to CL
(0.12)
(0.054)
C 1.7
CL to
CL
(0.07)
3,4,5
1.139
RXEF300
—
23.9
(0.94)
—
28.6
(1.13)
9.4
10.9
7.6
(0.37) (0.43) (0.30)
—
—
3.0
1.37
(0.12) (0.054)
1.7
(0.07)
3,4,5
1.379
—
27.2
(1.07)
—
31.8
(1.25)
9.4
10.9
7.6
(0.37) (0.43) (0.30)
—
—
3.0
1.37
(0.12) (0.054)
1.7
(0.07)
3,4,5
1.708
A E
A E
RXEF375
C
CL to CL
Min
F
CL CL
—
J
A
Max
RXEF110
RXEF160
J
J
B
B
B
B
Dimensions in Millimeters (Inches)
A
Part
Number
D
B
B
B
E
B
B
B
D
D
D
C
CL to CL
C
CL to CL
6
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 09/21/22
PPTC Datasheet
RXEF Series
Radial Leaded
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
RXEF005-2
RXEF005-AP
RXEF010
RXEF010-2
RXEF010-AP
500
—
—
10,000
—
UL, CSA, TÜV, CQC
—
3,000
—
15,000
—
UL, CSA, TÜV, CQC
—
—
2,000
10,000
—
UL, CSA, TÜV, CQC
500
—
—
10,000
X10
UL, CSA, TÜV, CQC
—
3,000
—
15,000
X10
UL, CSA, TÜV, CQC
—
—
2,000
10,000
X10
UL, CSA, TÜV, CQC
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
RXEF017
RXEF – 72V
RXEF020
RXEF020-2
RXEF020-AP
RXEF025
RXEF025-2
RXEF025-AP
RXEF030
RXEF030-2
RXEF030-AP
500
—
—
10,000
X20
UL, CSA, TÜV, CQC
—
3,000
—
15,000
X20
UL, CSA, TÜV, CQC
—
—
2,000
10,000
X20
UL, CSA, TÜV, CQC
500
—
—
10,000
X25
UL, CSA, TÜV, CQC
—
3,000
—
15,000
X25
UL, CSA, TÜV, CQC
—
—
2,000
10,000
X25
UL, CSA, TÜV, CQC
500
—
—
10,000
X30
UL, CSA, TÜV, CQC
—
3,000
—
15,000
X30
UL, CSA, TÜV, CQC
—
—
2,000
10,000
X30
UL, CSA, TÜV, CQC
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
RXEF040
500
—
—
10,000
X50
UL, CSA, TÜV, CQC
RXEF050-2
RXEF050
—
3,000
—
15,000
X50
UL, CSA, TÜV, CQC
RXEF050-AP
—
—
2,000
10,000
X50
UL, CSA, TÜV, CQC
500
—
—
10,000
X65
UL, CSA, TÜV, CQC
RXEF065-2
RXEF065
—
3,000
—
15,000
X65
UL, CSA, TÜV, CQC
RXEF065-AP
—
—
2,000
10,000
X65
UL, CSA, TÜV, CQC
500
—
—
10,000
X75
UL, CSA, TÜV, CQC
RXEF075-2
RXEF075
—
3,000
—
15,000
X75
UL, CSA, TÜV, CQC
RXEF075-AP
—
—
2,000
10,000
X75
UL, CSA, TÜV, CQC
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
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
RXEF090
RXEF110
7
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 09/21/22
PPTC Datasheet
RXEF Series
Radial Leaded
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
RXEF135-2
RXEF135-AP
RXEF160
RXEF160-2
RXEF160-AP
RXEF185
RXEF185-2
RXEF185-AP
500
—
—
10,000
X135
UL, CSA, TÜV, CQC
—
1,500
—
7,500
X135
UL, CSA, TÜV, CQC
—
—
1,000
5,000
X135
UL, CSA, TÜV, CQC
500
—
—
10,000
X160
UL, CSA, TÜV, CQC
—
1,500
—
7,500
X160
UL, CSA, TÜV, CQC
—
—
1,000
5,000
X160
UL, CSA, TÜV, CQC
500
—
—
10,000
X185
UL, CSA, TÜV, CQC
—
1,500
—
7,500
X185
UL, CSA, TÜV, CQC
—
—
1,000
5,000
X185
UL, CSA, TÜV, CQC
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
RXEF250
250
—
—
5,000
X300
UL, CSA, TÜV, CQC
RXEF300-2
RXEF300
—
1,000
—
5,000
X300
UL, CSA, TÜV, CQC
RXEF300-AP
—
—
1,000
5,000
X300
UL, CSA, TÜV, CQC
250
—
—
5,000
X375
UL, CSA, TÜV, CQC
RXEF375
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.
8
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 09/21/22
PPTC Datasheet
RXEF Series
Radial Leaded
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
W
18
-0.5/+1.0
Hold-Down Tape Width
W4
11
Minimum
Top Distance between Tape Edges
W6
3
Maximum
Sprocket Hole Position
W5
9
-0.5/+0.75
Sprocket Hole Diameter
D0
4
± 0.2
Abscissa to Plane (Straight Lead) (RXEF110 To RXEF300)
H
18.5
± 2.5
Abscissa to Plane (Kinked Lead) (RXEF010 To RXEF090)
H0
16.0
± 0.5
Abscissa to Top (RXEF010 To RXEF090)
H1
32.2
Maximum
Abscissa to Top* (RXEF110 To RXEF300)
H1
47.5
Maximum
Overall Width with Lead Protrusion (RXEF010 To RXEF090)
C1
43.2
Maximum
Overall Width with Lead Protrusion* (RXEF110 To RXEF300)
C1
58
Maximum
Overall Width without Lead Protrusion (RXEF010 To RXEF090)
C2
42.5
Maximum
Maximum
Overall Width without Lead Protrusion* (RXEF110 To RXEF300)
C2
57.0
Lead Protrusion
L1
1.0
Maximum
Protrusion of Cut-Out
L
11.0
Maximum
Protrusion beyond Hold-down Tape
I2
Not Specified
—
Sprocket Hole Pitch
P0
12.7
± 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)
T1
1.5
Maximum
Overall Tape and Lead Thickness (RXEF110 To RXEF300)
T1
2.3
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)
P1
3.81
± 0.7
Ordinate to Adjacent Component Lead (RXEF250 To RXEF300)
P1
7.62
± 0.7
Lead Spacing* (RXEF010 To RXEF185)
F
5.05
± 0.75
F
10.15
± 0.75
Reel Width (RXEF010 To RXEF090)
Lead Spacing* (RXEF250 To RXEF300)
W2
56.0
Maximum
Reel Width* (RXEF110 To RXEF300)
W2
63.5
Maximum
A
370.0
Maximum
Space between Flanges* (RXEF010 To RXEF090)
W1
48.0
Maximum
Space between Flanges* (RXEF110 To RXEF300)
W1
55.0
Maximum
C
26.0
± 12.0
Reel Diameter
Arbor Hold Diameter
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.
9
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 09/21/22
PPTC Datasheet
RXEF Series
Radial Leaded
Tape and Reel Diagrams
h
p
h
p
Reference Plane
H1
P1
H1
F
A
L
H0
B
D4
C2
C1
H
W5
W
I2
L1
P0
Direction of Unreeling
D0
Figure 1
Cross Section A-B
t
Reel
Upper Side
n
Type
a
Direction of
Unreeling
Lower Side
c
w1
w2
Cross Section
Optional Shape: Circular or Polygonal
Figure 2
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.
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.
10
© 2022 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 09/21/22