MF-RX250/72-0 Bourns Inc., MF-RX250/72-0 Datasheet - Page 4

• 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.
Devices taped using EIA468–B/IEC286-2 standards. See table below and Figures 1 and 2 for details.
Dimension Description
Carrier tape width
Hold down tape width:
Hold down tape
Top distance between tape edges
Sprocket hole position
Sprocket hole diameter
Abscissa to plane (straight lead)
Abscissa to plane (kinked lead)
Abscissa to top (straight lead)
Abscissa to top (kinked lead)
Overall width w/lead protrusion (straight lead)
Overall width w/lead protrusion (kinked lead)
Overall width w/o lead protrusion (straight lead)
Overall width w/o lead protrusion (kinked lead)
Lead protrusion
Protrusion of cutout
Protrusion beyond hold tape
Sprocket hole pitch
Pitch tolerance
Device pitch: MF-R005–MF-R160, MF-R/90, MF-RX/72
Device pitch: MF-R185–MF-R400,
MF-RX110–MF-RX375, MF-R/600
Tape thickness
Tape thickness with splice: MF-R010–MF-R160
Tape thickness with splice: MF-R250–MF-R1100
MF-RX110–MF-RX375, MF-R/90
Splice sprocket hole alignment
Body lateral deviation
Body tape plane deviation
Lead spacing
Reel width
Reel diameter
Space between flanges less device
MF-R, MF-R/90, MF-R/600, MF-RX, MF-RX/72 & MF-RX/250 Series
Tape and Reel Specifications
IEC
Mark
W
W 0
W 2
W 1
D 0
H
H 0
H 1
H 1
I 1
L
I 2
P 0
t
∆ h
∆ p
F
w
d
W 1
EIA
Mark
W
W 4
W 6
W 5
D 0
H
H 0
H 1
H 1
C 1
C 1
C 2
C 2
L 1
L
I 2
P 0
t
t 1
t 1
∆ h
∆ p
F
W 2
a
h
20 consecutive
No protrusion
Not specified
Dimensions
(1.496)
(1.268)
(2.165)
(2.126)
(1.673)
(2.205)
(14.57)
(.709)
(.433)
(.118)
(.354)
(.157)
(.728)
(.039)
(.433)
(.035)
(.059)
(.091)
(.187)
(.63)
(1.7)
(0.5)
(0.5)
(1.0)
(0.2)
18.5
38.0
32.2
55.0
43.2
54.0
42.5
12.7
12.7
25.4
5.08
4.75
370
1.0
0.9
1.5
2.3
18
11
16
11
0
0
0
56
3
9
4
Dimensions
Tolerance
(-0.02/+.039)
(-0.02/+0.03)
(±.012)
-0.5/+0.75
max.
max.
max.
max.
max.
max.
max.
max.
max.
max.
max.
max.
(±.039)
(±.021)
(±.008)
max.
max.
(±.128)
DIMENSIONS =
-0.5/+1.0
min.
(±.0078)
±3.25
±0.3
(±.118)
(±.012)
±1.0
±0.3
±0.2
±1
(±.02)
±0.2
±3.0
±0.5
±0.3
(INCHES)
MM