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

Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Additional Features
Packaging options:
BULK: 500 pcs. per bag.
TAPE & REEL: MF-RX110/72 - MF-RX160/72 = 1500 pcs. per reel; MF-RX185/72 - MF-RX375/72 = 1000 pcs. per reel.
AMMO-PACK: MF-RX110/72 - MF-RX160/72 = 1000 pcs. per reel; MF-RX185/72 - MF-RX375/72 = 500 pcs. per reel.
Product Dimensions
MF-RX110/72
MF-RX135/72
MF-RX160/72
MF-RX185/72
MF-RX250/72
MF-RX300/72
MF-RX375/72
Resettable circuit protection
Bulk packaging, tape and reel and Ammo-Pak available on most models
Model
MF-RX/72 Series -
A
C
(0.427)
(0.483)
(0.549)
(0.598)
(0.702)
(0.814)
(0.926)
10.84
12.26
13.94
15.18
17.84
20.67
23.51
Max.
E
B
D
A
(0.663)
(0.720)
(0.785)
(0.834)
(0.939)
(1.050)
(1.162)
Max.
16.8
18.3
19.9
21.2
23.8
26.7
29.6
B
PTC Resettable Fuses
Represents total content. Layout may vary.
Typical Part Marking
(0.201)
(0.201)
(0.201)
(0.201)
(0.402)
(0.402)
(0.402)
DATE CODE
(FIRST DIGIT =
LAST DIGIT OF YEAR;
NEXT THREE DIGITS =
DAY OF YEAR)
Nom.
PART
IDENTIFICATION
10.2
10.2
10.2
5.1
5.1
5.1
5.1
C
(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
RX110
4180S
MANUFACTURER'S
TRADEMARK
LOT NO.
(S = CHINA)
(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
D
(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
E
Multifuse
Product Designator
Series
Hold Current, I hold
Maximum Voltage, V max
Packaging Options
*Packaged per EIA 486-B
How to Order
110-375 (1.10 Amps - 3.75 Amps)
72 (72 Volts)
- AP = Ammo-Pak*
-
RX =Radial Leaded Component
- 2 = Tape and Reel*
= Bulk Packaging
0.81 (20AWG)
®
Physical Characteristics
Lead Dia.
(0.032)
(0.032)
(0.032)
(0.032)
(0.032)
(0.032)
(0.032)
0.81
0.81
0.81
0.81
0.81
0.81
0.81
MF - RX 110/72 -
DIMENSIONS =
Material
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
(INCHES)
MM
__