RXEF250 TE Connectivity, RXEF250 Datasheet - Page 5

• Manufacturer Part Number: RXEF250
• Description: FUSE, PTC RESET, 72V, 2.5A, RADIAL
• Manufacturer: TE Connectivity
• Series: RXEFr

Specifications of RXEF250

• Holding Current: 2.5A
• Tripping Current: 5A
• Initial Resistance Max: 0.08ohm
• Operating Voltage: 72V
• Ptc Fuse Case: Radial Leaded
• Initial Resistance Min: 0.05ohm
• Resistance R1: 0.13ohm
• Rohs Compliant: Yes
• Hold Current: 2.5A
• Trip Current: 5A
• Initial Resistance (min): 50mOhm
• Initial Resistance (max): 80mOhm
• Voltage Rating Max: 72V
• Trip Time (max): 15.6@12.5As
• Power Dissipation (typ): 2.5W
• Post Trip Resistance (max): 130mOhm
• Wire Form: Straight
• Agency Approvals: CSA/TUV/UL
• Operating Temperature Min Deg. C: -40C
• Operating Temperature Max Deg. C: 85C
• Brand/series: PolySwitch®/RXEF Series
• Current, Rating: 2.5 A
• Dimensions: 0.82x0.12x1 "
• Material, Body: Epoxy Polymer
• Mounting Type: PCB
• Primary Type: Resettable
• Resistance, Dc: 0.08 Ohms
• Termination: Radial
• Voltage, Rating: 72 VDC
• Agency Recognition: UL, CSA, TUV
• Ul File Number: E74889
• Csa File Number: A78165
• Vmax (v): 72
• Imax (a): 40
• Ih (room Temperature) (a): 2.5
• It (room Temperature) (a): 5.00
• Rmin (?): 0.05
• Rmax (?): 0.080
• R1 Max [post Trip] (?): 0.13
• Power Dissipation (typical) (w): 2.50
• Construction: Radial
• Lead Type: Straight
• Family Name: RXEF
• Coating: Coated
• Rohs/elv Compliance: RoHS compliant, ELV compliant
• Lead Free Solder Processes: Wave solder capable to 240°C, Wave solder capable to 260°C, Wave solder capable to 265°C
• Rohs/elv Compliance History: Always was RoHS compliant
• Tuv Certificate No.: Available on request (per IEC 60730-1)
• Operating Temperature (max.) (°c): 85
• Application: Radial
• Packaging Method: Bulk
• Lead Free Status / Rohs Status: Compliant

Table R2 - Thermal Derating for Radial-leaded Devices [Hold Current (A) at Ambient Temperature (°C)]
Part Number
RHEF
16V - High Temperature
RHEF650
RHEF700
RHEF750
RHEF800
RHEF900
RHEF1000
RHEF1100
RHEF1300
RHEF1400
RHEF1500
RUSBF
6V
RUSBF075
RUSBF120
RUSBF155
Figures R1-R5 - Thermal Derating Curve for Radial-leaded Devices
A=LVR
B=LVRL
RXEF and
BBRF
Maximum Ambient Temperature
-40°C
8.80
9.51
10.20
10.87
12.21
13.60
14.94
17.70
19.01
20.40
1.05
1.69
2.17
-20°C
8.10
8.73
9.40
9.98
11.19
12.50
13.72
16.30
17.46
18.80
0.95
1.52
1.96
Figure R1
Figure R2
200
150
100
160
150
140
130
120
110
100
50
90
80
70
60
50
40
30
0
0°C
7.40
7.95
8.60
9.08
10.16
11.40
12.49
14.80
15.89
17.10
0.85
1.36
1.75
–40
-30
-20
20°C
6.70
7.20
7.70
8.23
9.26
10.30
11.31
13.40
14.40
15.50
0.75
1.20
1.55
B
A
–20
-10
25°C
6.50
7.00
7.50
8.00
9.00
10.00
11.00
13.00
14.00
15.00
0.73
1.16
1.50
0
40°C
5.70
6.17
6.60
7.06
7.97
8.80
9.70
11.40
12.35
13.20
0.65
1.04
1.34
0
10
Ambient Temperature (°C)
Ambient Temperature (°C)
20
50°C
5.30
5.61
6.10
6.41
7.20
8.10
8.82
10.50
11.22
12.10
0.60
0.96
1.24
20
30
60°C
4.80
5.15
5.60
5.88
6.56
7.40
8.09
9.60
10.29
11.10
0.55
0.88
1.14
40
40
70°C
4.30
4.66
5.00
5.33
6.04
6.60
7.32
8.60
9.32
9.90
0.50
0.80
1.03
50
60
85°C
3.60
3.88
4.10
4.43
5.01
5.50
6.09
7.20
7.76
8.30
0.43
0.68
0.88
60
70
125°C
1.60
1.73
1.90
1.97
2.19
2.50
2.71
3.30
3.45
3.80
—
—
—
80
...
80
Cont'd
90
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