MF-RX250/72-0 Bourns Inc., MF-RX250/72-0 Datasheet - Page 2

• Manufacturer Part Number: MF-RX250/72-0
• Description: FUSE PTC RESET 2.50A HOLD
• Manufacturer: Bourns Inc.
• Series: MF-RXr
• Type: PTC Resettable Fusesr

Specifications of MF-RX250/72-0

• R Min/max: 0.050 ~ 0.080 Ohm
• Voltage - Max: 72V
• Time To Trip: 15.6s
• Current - Hold (ih) (max): 2.5A
• Current - Trip (it): 5A
• Current - Max: 40A
• Package / Case: Radial
• Hold Current: 2.5 Amps
• Trip Current: 5 Amps
• Current Rating (max): 40 Amps
• Resistance: 0.08 Ohms
• Maximum Voltage: 72 VoltsDC
• Termination Style: Radial
• Mounting Style: Through Hole
• Dimensions: 17.84 mm L x 3.1 mm W x 23.84 mm H
• Lead Spacing: 10.2 mm
• Operating Temperature Range: - 40 C to + 85 C
• 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: UL
• Operating Temperature Min Deg. C: -40C
• Operating Temperature Max Deg. C: 85C
• Brand/series: MF-RX/72 Series
• Current, Rating: 2.5 A
• Mounting Type: PCB
• Primary Type: Resettable
• Resistance, Dc: 0.05 Ohms
• Termination: Radial
• Voltage, Rating: 72 VDC
• Holding Current: 2.5A
• Tripping Current: 5A
• Initial Resistance Max: 0.08ohm
• Operating Voltage: 72V
• Ptc Fuse Case: Radial Leaded
• External Depth: 3.1mm
• Initial Resistance Min: 0.05ohm
• 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
• Other names: MF-RX250/72; MF-RX250/72

Additional Features
■
■
Packaging options:
BULK:
TAPE & REEL: MF-RX020/72-2 ~ MF-RX090/72-2 = 3000 pcs. per reel; MF-RX110/72-2 ~ MF-RX160/72-2 = 1500 pcs. per reel;
AMMO-PACK: MF-RX020/72-AP ~ MF-RX090/72-AP = 2000 pcs. per pack; MF-RX110/72-AP ~ MF-RX160/72-AP = 1000 pcs. per pack;
Style 1
MF-RX020/72
MF-RX025/72
MF-RX030/72
MF-RX040/72
MF-RX050/72
MF-RX065/72
MF-RX075/72
MF-RX090/72
MF-RX110/72
MF-RX135/72
MF-RX160/72
MF-RX185/72
MF-RX250/72
MF-RX300/72
MF-RX375/72
Product Dimensions
Resettable circuit protection
Bulk packaging, tape and reel and Ammo-Pak available on most models
A
MF-RX/72 Series - PTC Resettable Fuses
Model
C
B
D
E
500 pcs. per bag.
MF-RX185/72-2 - MF-RX375/72-2 = 1000 pcs. per reel.
MF-RX185/72-AP - MF-RX375/72-AP = 500 pcs. per pack.
(0.291)
(0.291)
(0.291)
(0.291)
(0.382)
(0.409)
(0.461)
(0.427)
(0.483)
(0.549)
(0.598)
(0.702)
(0.814)
(0.926)
(0.311
10.84
12.26
13.94
15.18
17.84
20.67
23.51
Max.
10.4
11.7
7.4
7.4
7.4
7.4
7.9
9.7
Style 2
A
A
C
(0.528)
(0.539)
(0.539)
(0.598)
(0.630)
(0.657)
(0.662)
(0.718)
(0.785)
(0.833)
(0.938)
(1.050)
(1.161)
16.70
16.84
18.26
19.94
21.18
23.84
26.67
29.51
E
Max.
B
12.7
(0.5)
12.7
(0.5)
13.4
13.7
13.7
15.2
16.0
D
B
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.402)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.201)
(0.402)
(0.402)
(0.402)
Nom.
Represents total content. Layout may vary.
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
DATE CODE
(FIRST DIGIT =
LAST DIGIT OF YEAR;
NEXT THREE DIGITS =
DAY OF YEAR)
PART
IDENTIFICATION
Typical Part Marking
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)
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
RX110
4180S
(0.30)
(0.30)
(0.30)
(0.30)
(0.30)
(0.30)
(0.30)
(0.30)
(0.30)
(0.30)
(0.30)
(0.30)
(0.30)
(0.30)
(0.30)
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
D
MANUFACTURER'S
TRADEMARK
LOT NO.
(S = CHINA)
Customers should verify actual device performance in their specifi c applications.
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
(0.122)
Max.
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
E
Multifuse
Product Designator
Series
Hold Current, Ihold
Maximum Voltage, Vmax
Packaging Options
*Packaged per EIA 486-B
- AP = Ammo-Pak*
RX = Radial Leaded Component
020-375 (0.20 Amps - 3.75 Amps)
72 (72 Volts)
How to Order
Style
- 0 = Bulk Packaging
- 2 = Tape and Reel*
Specifi cations are subject to change without notice.
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
Physical Characteristics
®
Lead Dia.
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.020)
(0.032)
(0.032)
(0.032)
(0.032)
(0.032)
(0.032)
(0.032)
1 0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.81
0.81
0.81
0.81
0.81
0.81
0.81
MF - RX 110/72 - 2
DIMENSIONS:
Sn/CuFe
Sn/CuFe
Sn/CuFe
Sn/CuFe
Material
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
MM
(INCHES)