MF-R250 Bourns Inc., MF-R250 Datasheet - Page 2
![FUSE PTC RESET 2.50A HOLD](/photos/1/32/13226/bourns_inc-_mf-r250_sml.jpg)
MF-R250
Manufacturer Part Number
MF-R250
Description
FUSE PTC RESET 2.50A HOLD
Manufacturer
Bourns Inc.
Series
MF-Rr
Datasheet
1.MF-R110.pdf
(6 pages)
Specifications of MF-R250
R Min/max
0.025 ~ 0.048 Ohm
Voltage - Max
30V
Time To Trip
10.3s
Current - Hold (ih) (max)
2.5A
Current - Trip (it)
5A
Current - Max
40A
Package / Case
Radial
Holding Current
2.5A
Tripping Current
5A
Initial Resistance Max
0.048ohm
Operating Voltage
30V
Ptc Fuse Case
Radial Lead
Initial Resistance Min
0.025ohm
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
2.50 A @ 23 °C
Current, Rating
40 A
Current, Ratings
40 A
Current, Tripping
5.00 A @ 23 °C
Dimensions
0.472x0.118x0.72 "
Mounting Type
PCB
Primary Type
Resettable
Resistance
0.025 Ohms @ 23 °C
Resistance, Dc
0.025 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
1.20 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-R250
Manufacturer:
BOURNS
Quantity:
60 000
Part Number:
MF-R250
Manufacturer:
BOURNS/伯恩斯
Quantity:
20 000
Company:
Part Number:
MF-R250-0-10
Manufacturer:
BOURNS
Quantity:
60 000
Company:
Part Number:
MF-R250-0-10-2
Manufacturer:
BOURNS
Quantity:
40 000
Company:
Part Number:
MF-R250-0-99
Manufacturer:
BOURNS
Quantity:
8 379
Company:
Part Number:
MF-R250-2
Manufacturer:
BOURNS
Quantity:
40 000
Additional Features
■
■
Packaging options: BULK: All models = 500 pcs. per bag.
Product Dimensions (see next page for outline drawing)
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
Bulk packaging, tape and reel and Ammo-Pak available on most models
Patents pending
Model
MF-R Series - PTC Resettable Fuses
TAPE & REEL: MF-R005-MF-R160 - 12.7 mm device pitch = 3000 pcs. per reel;
MF-R185-MF-R400 - 25.4mm device pitch = 1500 pcs. per reel; MF-R250-0-10 = 1500 pcs. per reel.
AMMO-PACK: MF-R005-MF-R160 - 12.7 mm device pitch = 2000 pcs. per reel;
MF-R185-MF-R400 - 25.4 mm device pitch = 1000 pcs. per reel; MF-R090-0-9 & MF-R250-0-10 =
2000 pcs. per reel.
(0.315)
(0.291)
(0.291)
(0.291)
(0.291)
(0.291)
(0.291)
(0.311)
(0.382)
(0.409)
(0.461)
(0.291)
(0.350)
(0.350)
(0.402)
(0.472)
(0.472)
(0.472)
(0.472)
(0.567)
(0.685)
(0.760)
(0.870)
(0.953)
(0.953)
(0.953)
Max.
10.4
11.7
10.2
12.0
12.0
12.0
12.0
14.4
17.4
19.3
22.1
24.2
24.2
24.2
8.0
7.4
7.4
7.4
7.4
7.4
7.4
7.9
9.7
7.4
8.9
8.9
A
(0.327)
(0.528)
(0.539)
(0.539)
(0.598)
(0.630)
(0.657)
(0.480)
(0.551)
(0.744)
(0.661)
(0.724)
(0.720)
(0.720)
(0.720)
(0.976)
(0.980)
(1.256)
(1.173)
(1.295)
(1.295)
(1.295)
Max.
12.7
12.7
12.7
12.7
13.4
13.7
13.7
15.2
16.0
16.7
12.2
14.0
18.9
16.8
18.4
18.3
18.3
18.3
24.8
24.9
31.9
29.8
32.9
32.9
32.9
(0.5)
(0.5)
(0.5)
(0.5)
8.3
B
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.402)
(0.402)
(0.402)
(0.402)
(0.402)
(0.402)
Nom.
10.2
10.2
10.2
10.2
10.2
10.2
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
C
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
(0.028)
Tol. ±
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
Customers should verify actual device performance in their specifi c applications.
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
(0.299)
Min.
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
D
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.118)
(0.118)
(0.118)
(0.118)
(0.118)
(0.118)
(0.118)
(0.118)
(0.118)
(0.118)
(0.118)
(0.118)
(0.118)
(0.118)
(0.118)
Max.
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
E
Specifi cations are subject to change without notice.
0.405 (26AWG)
0.51 (24AWG)
0.81 (20AWG)
Style
4
1
1
1
1
1
1
1
1
1
1
3
1
1
1
1
2
3
2
2
2
2
2
2
2
2
Physical Characteristics
Lead Dia.
(0.016)
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.032)
(0.020)
(0.032)
(0.032)
(0.032)
(0.032)
(0.032)
(0.032)
(0.032)
(0.032)
0.405
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.81
0.51
0.81
0.81
0.81
0.81
0.81
0.81
0.81
0.81
DIMENSIONS:
Material
Sn/CuFe
Sn/CuFe
Sn/CuFe
Sn/CuFe
Sn/CuFe
Sn/CuFe
Sn/CuFe
Sn/NiCu
Sn/NiCu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
(INCHES)
MM