MF-R250-2 Bourns Inc., MF-R250-2 Datasheet - Page 5

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

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

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-down tape
Sprocket hole pitch
Pitch tolerance
Device pitch: MF-R005–MF-R160, MF-R/90,
MF-RX110/72–MF-RX185/72
Device pitch: MF-R185–MF-R400, MF-RX110–MF-RX375
MF-R/600, MF-RX250/72–MF-RX375/72
Tape thickness
Tape thickness with splice: MF-R010–MF-R160,
MF-RX110/72–MF-RX185/72
Tape thickness with splice: MF-R250–MF-R1100,
MF-RX110–MF-RX375, MF-R/90, MF-RX250/72-MF-RX375/72
Splice sprocket hole alignment
Body lateral deviation
Body tape plane deviation
Customers should verify actual device performance in their specifi c applications.
Specifi cations are subject to change without notice.
MF-R, MF-R/90, MF-R/600, MF-RX, MF-RX/72 & MF-RX/250 Series
Tape and Reel Specifi cations
Mark
IEC
W 0
W 2
W 1
D 0
H 0
H 1
H 1
Δ p
P 0
Δ h
W
I 1
I 2
H
L
t
Mark
EIA
W 4
W 6
W 5
D 0
H 0
H 1
H 1
C 1
C 1
C 2
C 2
P 0
Δ p
L 1
Δ h
W
H
I 2
t 1
t 1
L
t
20 consecutive
No protrusion
Not specifi ed
Dimensions
(1.496)
(1.268)
(2.165)
(2.126)
(1.673)
(.709)
(.433)
(.118)
(.354)
(.157)
(.728)
(.039)
(.433)
(.035)
(.059)
(.091)
18.5
(.63)
38.0
(1.7)
54.0
42.5
12.7
(0.5)
(0.5)
(1.0)
32.2
55.0
43.2
12.7
25.4
1.5
2.3
18
16
1.0
0.9
11
11
3
9
4
0
0
0
Dimensions
DIMENSIONS:
(-0.02/+.039)
(-0.02/+0.03)
-0.5/+0.75
Tolerance
-0.5/+1.0
(±.0078)
(±.118)
(±.012)
(±.039)
(±.012)
(±.024)
(±.012)
(±.039)
(±.051)
(±.02)
max.
max.
max.
max.
max.
max.
max.
max.
max.
max.
max.
max.
±0.2
±3.0
±0.5
±0.3
±0.3
±0.6
±0.3
±1.0
±1.3
min.
±1
(INCHES)
MM