MF-R250-0-99 Bourns Inc., MF-R250-0-99 Datasheet - Page 3
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MF-R250-0-99
Manufacturer Part Number
MF-R250-0-99
Description
FUSE PTC RESET
Manufacturer
Bourns Inc.
Series
MF-Rr
Type
PTC Resettable Fusesr
Datasheet
1.MF-R110.pdf
(6 pages)
Specifications of MF-R250-0-99
Voltage - Max
30V
Current - Max
40A
Current - Hold (ih) (max)
2.5A
Current - Trip (it)
5A
R Min/max
0.025 ~ 0.048 Ohm
Time To Trip
10.3s
Package / Case
Radial
Hold Current
2.5 Amps
Trip Current
5 Amps
Current Rating (max)
40 Amps
Resistance
0.048 Ohms
Maximum Voltage
30 VoltsDC
Termination Style
Radial
Mounting Style
Through Hole
Current Rating
40 Amps
Dimensions
12 mm L x 3 mm W x 18.3 mm H x 12 mm D
Lead Spacing
5.1 mm
Operating Temperature Range
- 40 C to + 85 C
Holding Current
2.5A
Tripping Current
5A
Initial Resistance Max
0.048ohm
Operating Voltage
30V
Ptc Fuse Case
Radial Leaded
External Depth
3mm
Initial Resistance Min
0.025ohm
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MF-R250-0-99
Manufacturer:
BOURNS
Quantity:
8 379
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Model
MF-R005
MF-R010
MF-R017
MF-R020
MF-R025
MF-R030
MF-R040
MF-R050
MF-R065
MF-R075
MF-R090
MF-R090-0-9
MF-R110
MF-R135
MF-R160
MF-R185
MF-R250
MF-R250-0-10
MF-R300
MF-R400
MF-R500
MF-R600
MF-R700
MF-R800
MF-R900
MF-R1100
Product Dimensions (see previous page for dimensions)
Thermal Derating Chart - I hold / I trip (Amps)
Style 1
MF-R Series - PTC Resettable Fuses
A
C
B
D
E
4.35 / 8.70
5.80 / 11.6
7.25 / 14.5
8.70 / 17.4
10.1 / 20.3
11.6 / 23.2
13.0 / 26.1
16.1 / 32.0
0.08 / 0.16
0.16 / 0.32
0.26 / 0.52
0.31 / 0.62
0.39 / 0.78
0.47 / 0.94
0.62 / 1.24
0.78 / 1.56
1.01 / 2.02
1.16 / 2.32
1.40 / 2.80
1.40 / 2.80
1.60 / 3.20
1.96 / 3.92
2.32 / 4.64
2.68 / 5.36
3.63 / 7.26
3.63 / 7.26
-40 ºC
3.90 / 7.80
5.20 / 10.4
6.50 / 13.0
7.80 / 15.6
9.10 / 18.2
10.4 / 20.8
11.7 / 23.4
14.6 / 29.2
0.07 / 0.14
0.14 / 0.28
0.23 / 0.46
0.27 / 0.54
0.34 / 0.68
0.41 / 0.82
0.54 / 1.08
0.68 / 1.36
0.88 / 1.76
1.02 / 2.04
1.22 / 2.44
1.22 / 2.44
1.43 / 2.86
1.76 / 3.52
2.08 / 4.16
2.41 / 4.82
3.25 / 6.50
3.25 / 6.50
Style 2
-20 ºC
NOTE: Kinked lead option is
available for board standoff.
Contact factory for details.
A
C
3.45 / 6.90
4.60 / 9.20
5.75 / 11.5
6.90 / 13.8
8.05 / 16.1
9.20 / 18.4
10.3 / 20.7
13.1 / 26.2
0.06 / 0.12
0.12 / 0.24
0.20 / 0.40
0.24 / 0.48
0.30 / 0.60
0.36 / 0.72
0.48 / 0.96
0.60 / 1.20
0.77 / 1.54
0.89 / 1.78
1.07 / 2.14
1.07 / 2.14
1.27 / 2.54
1.55 / 3.10
1.84 / 3.68
2.13 / 4.26
2.88 / 5.76
2.88 / 5.76
D
B
0 ºC
E
3.00 / 6.00
4.00 / 8.00
5.00 / 10.0
6.00 / 12.0
7.00 / 14.0
8.00 / 16.0
9.00 / 18.0
11.0 / 22.1
0.05 / 0.10
0.10 / 0.20
0.17 / 0.34
0.20 / 0.40
0.25 / 0.50
0.30 / 0.60
0.40 / 0.80
0.50 / 1.00
0.65 / 1.30
0.75 / 1.50
0.90 / 1.80
0.90 / 1.80
1.10 / 2.20
1.35 / 2.70
1.60 / 3.20
1.85 / 3.70
2.50 / 5.00
2.50 / 5.00
Ambient Operating Temperature
23 ºC
Style 3
NOTE: Also available with
straight leads. Contact
factory for details.
2.49 / 4.98
3.32 / 6.64
4.15 / 8.30
4.98 / 9.96
5.81 / 11.6
6.64 / 13.2
7.47 / 14.9
9.40 / 18.4
0.04 / 0.08
0.08 / 0.16
0.14 / 0.28
0.16 / 0.32
0.20 / 0.40
0.24 / 0.48
0.32 / 0.64
0.41 / 0.82
0.53 / 1.06
0.61 / 1.22
0.73 / 1.46
0.73 / 1.46
0.91 / 1.82
1.12 / 2.24
1.33 / 2.66
1.54 / 3.08
2.08 / 4.16
2.08 / 4.16
A
40 ºC
C
D
B
E
2.31 / 4.62
3.08 / 6.16
3.85 / 7.70
4.62 / 9.24
5.39 / 10.7
6.16 / 12.3
6.93 / 12.7
8.80 / 17.6
0.04 / 0.08
0.07 / 0.14
0.12 / 0.24
0.14 / 0.28
0.18 / 0.36
0.22 / 0.44
0.29 / 0.58
0.36 / 0.72
0.47 / 0.94
0.54 / 1.08
0.65 / 1.30
0.65 / 1.30
0.85 / 1.70
1.04 / 2.08
1.23 / 2.46
1.42 / 2.84
1.93 / 3.86
1.93 / 3.86
50 ºC
0.03 / 0.07
0.06 / 0.12
0.11 / 0.22
0.13 / 0.26
0.16 / 0.32
0.19 / 0.38
0.25 / 0.50
0.32 / 0.64
0.41 / 0.82
0.47 / 0.94
0.57 / 1.14
0.57 / 1.14
0.75 / 1.50
0.92 / 1.84
1.09 / 2.18
1.26 / 2.52
1.70 / 3.40
1.70 / 3.40
2.04 / 4.08
2.72 / 5.44
3.40 / 6.80
4.08 / 8.16
4.76 / 9.52
5.44 / 10.8
6.12 / 12.2
7.80 / 15.6
60 ºC
Style 4
A
C
1.83 / 3.66
2.44 / 4.88
3.05 / 6.10
3.66 / 7.32
4.27 / 9.44
4.88 / 9.76
5.49 / 10.9
6.90 / 13.8
0.03 / 0.07
0.05 / 0.10
0.09 / 0.18
0.11 / 0.22
0.14 / 0.28
0.16 / 0.32
0.22 / 0.44
0.27 / 0.54
0.35 / 0.70
0.41 / 0.82
0.49 / 0.98
0.49 / 0.98
0.67 / 1.34
0.82 / 1.64
0.98 / 1.96
1.13 / 2.26
1.53 / 3.06
1.53 / 3.06
70 ºC
B
D
1.56 / 3.12
2.08 / 4.16
2.60 / 5.20
3.12 / 6.24
3.64 / 7.28
4.16 / 8.32
4.68 / 9.36
5.20 / 10.4
0.02 / 0.05
0.04 / 0.08
0.07 / 0.14
0.08 / 0.16
0.10 / 0.20
0.12 / 0.24
0.16 / 0.32
0.20 / 0.40
0.26 / 0.52
0.30 / 0.60
0.36 / 0.72
0.36 / 0.72
0.57 / 1.14
0.70 / 1.40
0.83 / 1.66
0.96 / 1.92
1.30 / 2.60
1.30 / 2.60
85 ºC
E