MF-R185 Bourns Inc., MF-R185 Datasheet - Page 3
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MF-R185
Manufacturer Part Number
MF-R185
Description
FUSE PTC RESETTABLE 1.85A HOLD
Manufacturer
Bourns Inc.
Series
MF-Rr
Datasheet
1.MF-R110.pdf
(6 pages)
Specifications of MF-R185
R Min/max
0.040 ~ 0.070 Ohm
Voltage - Max
30V
Time To Trip
8.7s
Current - Hold (ih) (max)
1.85A
Current - Trip (it)
3.7A
Current - Max
40A
Package / Case
Radial
Holding Current
1.85A
Tripping Current
3.7A
Initial Resistance Max
0.07ohm
Operating Voltage
30V
Ptc Fuse Case
Radial Lead
Initial Resistance Min
0.04ohm
Lead Spacing
5.1mm
Application
Almost anywhere there is a low Voltage power Supply and a load to be protected, including computers and peripherals, general electronics and automotive applications
Brand/series
MF-R Series
Current, Holding
1.85 A @ 23 °C
Current, Rating
40 A
Current, Ratings
40 A
Current, Tripping
3.70 A @ 23 °C
Dimensions
0.472x0.118 "
Mounting Type
PCB
Primary Type
Resettable
Resistance
0.040 Ohms @ 23 °C
Resistance, Dc
0.04 Ohms
Standards
UL Recognized, CSA Certified, TUV Certified
Temperature, Operating, Maximum
85 °C
Temperature, Operating, Minimum
-40 °C
Terminal Type
Radial Leaded
Termination
Radial
Thermistor Type
Resettable
Tripped Power Dissipation
1.00 W @ 23 °C
Voltage, Rating
30 VDC
External Depth
3mm
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-R185
Manufacturer:
BOURNS
Quantity:
60 000
Company:
Part Number:
MF-R185-2
Manufacturer:
BOURNS
Quantity:
40 000
Part Number:
MF-R185-2
Manufacturer:
BOURNS/伯恩斯
Quantity:
20 000
Part Number:
MF-R185-AP-99
Manufacturer:
BOURNSS
Quantity:
20 000
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