MF-R250-2 Bourns Inc., MF-R250-2 Datasheet - Page 2

FUSE PTC RESET

MF-R250-2

Manufacturer Part Number
MF-R250-2
Description
FUSE PTC RESET
Manufacturer
Bourns Inc.
Series
MF-Rr
Type
PTC Resettable Fusesr
Datasheet

Specifications of MF-R250-2

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
Initial Resistance (min)
25mOhm
Initial Resistance (max)
48mOhm
Voltage Rating Max
30V
Trip Time (max)
10.3@12.5As
Power Dissipation (typ)
1.2W
Post Trip Resistance (max)
70mOhm
Wire Form
Straight
Agency Approvals
CSA/TUV/UL
Operating Temperature Min Deg. C
-40C
Operating Temperature Max Deg. C
85C
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
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

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