MF-RX/72 Series

IA
NT
Features
CO
M
PL
■
oH
S
■
*R
■
RX1
10
4180
S
■
■
Applications
72 V rated
Radial leaded devices
Cured, flame retardant epoxy polymer
insulating material meets
UL 94V-0 requirements
RoHS compliant*
Agency recognition:
Almost anywhere there is a low voltage
power supply, up to 72 V and a load to be
protected, including:
■ Security and fire alarm systems
■ Loudspeakers
■ Power transformers
MF-RX/72 Series - PTC Resettable Fuses
Electrical Characteristics
Initial
Resistance
1 Hour (R1)
Post-Trip
Resistance
Amperes
at 23 °C
Hold
Trip
Ohms
at 23 °C
Min.
Max.
Ohms
at 23 °C
Max.
Amperes
at 23 °C
Seconds
at 23 °C
Watts
at 23 °C
Typ.
1.10
1.35
1.60
1.85
2.50
3.00
3.75
0.15
0.12
0.09
0.08
0.05
0.04
0.03
0.38
0.30
0.22
0.19
0.13
0.10
0.08
5.5
6.75
8.0
9.25
12.5
15.0
18.75
8.2
9.6
11.4
12.6
15.6
19.8
24.0
1.50
1.70
1.90
2.10
2.50
2.80
3.20
Ihold
Model
MF-RX110/72
MF-RX135/72
MF-RX160/72
MF-RX185/72
MF-RX250/72
MF-RX300/72
MF-RX375/72
V max.
Volts
I max.
Amps
72.0
72.0
72.0
72.0
72.0
72.0
72.0
40
40
40
40
40
40
40
Itrip
2.20
2.70
3.20
3.70
5.00
6.00
7.50
0.25
0.19
0.14
0.12
0.08
0.06
0.05
Max. Time
To Trip
Tripped
Power
Dissipation
Environmental Characteristics
Operating/Storage Temperature ........................-40 °C to +85 °C
Maximum Device Surface Temperature
in Tripped State ................................................125 °C
Passive Aging......................................................+85 °C, 1000 hours ....................................±5 % typical resistance change
Humidity Aging....................................................+85 °C, 85 % R.H. 1000 hours ..................±5 % typical resistance change
Thermal Shock ....................................................+85 °C to -55 °C, 10 times ........................±10 % typical resistance change
Solvent Resistance ............................................MIL-STD-202, Method 215 ........................No change
Vibration ..............................................................MIL-STD-883C, Method 2007.1, ................No change
Condition A
Test Procedures And Requirements For Model MF-RX/72 Series
Test
Test Conditions
Accept/Reject Criteria
Visual/Mech. ......................................................Verify dimensions and materials ................Per MF physical description
Resistance ..........................................................In still air @ 23 °C ........................................Rmin ≤ R ≤ Rmax
Time to Trip ........................................................5 times Ihold, Vmax, 23 °C ........................T ≤ max. time to trip (seconds)
Hold Current ......................................................30 min. at Ihold ..........................................No trip
Trip Cycle Life ....................................................Vmax, Imax, 100 cycles ..............................No arcing or burning
Trip Endurance....................................................Vmax, 48 hours ..........................................No arcing or burning
UL File Number ..................................................E 174545S
Circuit Protection Division
Asia-Pacific:
Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
Europe:
Tel: +41-41 768 5555 • Fax: +41-41 768 5510
The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Additional Features
■
■
Resettable circuit protection
Bulk packaging, tape and reel and Ammo-Pak available on most models
MF-RX/72 Series - PTC Resettable Fuses
Product Dimensions
Model
MF-RX110/72
MF-RX135/72
MF-RX160/72
MF-RX185/72
MF-RX250/72
MF-RX300/72
MF-RX375/72
A
Max.
10.84
(0.427)
12.26
(0.483)
13.94
(0.549)
15.18
(0.598)
17.84
(0.702)
20.67
(0.814)
23.51
(0.926)
B
Max.
16.8
(0.663)
18.3
(0.720)
19.9
(0.785)
21.2
(0.834)
23.8
(0.939)
26.7
(1.050)
29.6
(1.162)
C
Nom.
5.1
(0.201)
5.1
(0.201)
5.1
(0.201)
5.1
(0.201)
10.2
(0.402)
10.2
(0.402)
10.2
(0.402)
Tol. ±
0.7
(0.028)
0.7
(0.028)
0.7
(0.028)
0.7
(0.028)
0.7
(0.028)
0.7
(0.028)
0.7
(0.028)
D
Min.
7.6
(0.299)
7.6
(0.299)
7.6
(0.299)
7.6
(0.299)
7.6
(0.299)
7.6
(0.299)
7.6
(0.299)
E
Max.
3.1
(0.122)
3.1
(0.122)
3.1
(0.122)
3.1
(0.122)
3.1
(0.122)
3.1
(0.122)
3.1
(0.122)
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.
A
E
Typical Part Marking
Physical Characteristics
Lead Dia.
Material
0.81
Sn/Cu
(0.032)
0.81
Sn/Cu
(0.032)
0.81
Sn/Cu
(0.032)
0.81
Sn/Cu
(0.032)
0.81
Sn/Cu
(0.032)
0.81
Sn/Cu
(0.032)
0.81
Sn/Cu
(0.032)
DIMENSIONS =
0.81 (20AWG)
MM
(INCHES)
How to Order
Represents total content. Layout may vary.
B
PART
IDENTIFICATION
DATE CODE
(FIRST DIGIT =
LAST DIGIT OF YEAR;
NEXT THREE DIGITS =
DAY OF YEAR)
D
C
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
MANUFACTURER'S
TRADEMARK
RX110
4180S
LOT NO.
(S = CHINA)
MF - RX 110/72 - __
Multifuse®
Product Designator
Series
RX =Radial Leaded Component
Hold Current, Ihold
110-375 (1.10 Amps - 3.75 Amps)
Maximum Voltage, Vmax
72 (72 Volts)
Packaging Options
= Bulk Packaging
- 2 = Tape and Reel*
- AP = Ammo-Pak*
*Packaged per EIA 486-B
MF-RX/72 Series - PTC Resettable Fuses
MF
-R
MF X110
-R
/7
MF X135 2
-RX /72
MF 160
-R
/7
MF X185 2
-RX /72
MF 250
-R
/7
MF X300 2
-RX /72
375
/72
Typical Time to Trip at 23 °C
1000
Time to Trip (Seconds)
100
10
1
0.1
0.01
0.001
1
10
100
Fault Current (Amps)
The Time to Trip curves represent typical performance of a device in a simulated application environment. Actual performance in specific customer
applications may differ from these values due to the influence of other variables.
Thermal Derating Chart - Ihold (Amps)
Ambient Operating Temperature
Model
MF-RX110/72
MF-RX135/72
MF-RX160/72
MF-RX185/72
MF-RX250/72
MF-RX300/72
MF-RX375/72
-40 °C
1.71
2.09
2.48
2.87
3.88
4.65
5.81
-20 °C
1.50
1.84
2.18
2.52
3.40
4.08
5.10
0 °C
1.31
1.61
1.90
2.20
2.98
3.57
4.46
23 °C
1.10
1.35
1.60
1.85
2.50
3.00
3.75
40 °C
0.89
1.09
1.30
1.50
2.03
2.43
3.04
50 °C
0.79
0.97
1.15
1.33
1.80
2.16
2.70
60 °C
0.69
0.85
1.01
1.17
1.58
1.89
2.36
70 °C
0.59
0.73
0.86
1.00
1.35
1.62
2.03
85 °C
0.44
0.54
0.64
0.74
1.00
1.20
1.50
MF-RX/72 SERIES, REV. B, 11/04
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
MF-R, MF-R/90, MF-R/600, MF-RX, MF-RX/72 & MF-RX/250 Series
Tape and Reel Specifications
Devices taped using EIA468–B/IEC286-2 standards. See table below and Figures 1 and 2 for details.
Dimension Description
IEC
Mark
EIA
Mark
Carrier tape width
W
W
Hold down tape width:
W0
W4
Hold down tape
Top distance between tape edges
Dimensions
Dimensions
Tolerance
18
(.709)
11
(.433)
min.
No protrusion
W2
W6
3
(.118)
W5
9
(.354)
4
(.157)
18.5
(.728)
16
(.63)
38.0
(1.496)
32.2
(1.268)
55.0
(2.165)
43.2
(1.7)
54.0
(2.126)
42.5
(1.673)
1.0
(.039)
11
(.433)
Sprocket hole position
W1
Sprocket hole diameter
D0
D0
Abscissa to plane (straight lead)
H
H
Abscissa to plane (kinked lead)
H0
H0
Abscissa to top (straight lead)
H1
H1
Abscissa to top (kinked lead)
H1
H1
Overall width w/lead protrusion (straight lead)
C1
Overall width w/lead protrusion (kinked lead)
C1
Overall width w/o lead protrusion (straight lead)
C2
C2
Overall width w/o lead protrusion (kinked lead)
Lead protrusion
I1
L1
Protrusion of cutout
L
L
Protrusion beyond hold tape
I2
I2
Not specified
Sprocket hole pitch
P0
P0
12.7
(0.5)
Pitch tolerance
20 consecutive
Device pitch: MF-R005–MF-R160, MF-R/90, MF-RX/72
12.7
(0.5)
Device pitch: MF-R185–MF-R400,
MF-RX110–MF-RX375, MF-R/600
25.4
(1.0)
Tape thickness
-0.5/+1.0
(-0.02/+.039)
t
t
t1
Tape thickness with splice: MF-R010–MF-R160
Tape thickness with splice: MF-R250–MF-R1100
MF-RX110–MF-RX375, MF-R/90
t1
Splice sprocket hole alignment
0.9
(.035)
1.5
(.059)
2.3
(.091)
0
Body lateral deviation
∆h
∆h
Body tape plane deviation
∆p
∆p
Lead spacing
F
F
Reel width
w
W2
Reel diameter
d
a
Space between flanges less device
W1
h
0
0
5.08
(0.2)
56
(2.205)
370
(14.57)
4.75
(.187)
max.
-0.5/+0.75
(-0.02/+0.03)
±0.2
(±.0078)
±3.0
(±.118)
±0.5
(±.02)
max.
max.
max.
max.
max.
max.
max.
max.
±0.3
(±.012)
±1
max.
max.
max.
±0.3
(±.012)
±1.0
(±.039)
±0.3
(±.021)
±0.2
(±.008)
max.
max.
±3.25
(±.128)
DIMENSIONS =
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
MM
(INCHES)
MF-R, MF-R/90, MF-R/600, MF-RX, MF-RX/72 & MF-RX/250 Series
Tape and Reel Specifications
IEC
Mark
Dimension Description
EIA
Mark
Dimensions
Dimensions
Tolerance
Arbor hole diameter
f
c
26
(1.024)
±12.0
(±.472)
Core diameter: MF-R, MF-RX, MF-R/90
h
n
80
(3.15)
max.
Core diameter: MF-RX/250, MF-R/600
h
n
91
(3.58)
max.
56
(2.2)
67
(2.64)
64
(2.52)
Box: MF-R, MF-RX, MF-R/90
Box: MF-RX/250
Box: MF-R/600
372
(14.6)
372
(14.6)
372
(14.6)
Consecutive missing places: MF-R, MF-RX, MF-R/90
3
Consecutive missing places: MF-RX/250, MF-R/600
none
372
(14.6)
362
(14.25)
362
(14.25)
Empty places per reel: MF-R, MF-RX, MF-R/90
Not specified
Empty places per reel: MF-RX/250, MF-R/600
0.1 %
max.
max.
max.
max.
Taped Component Dimensions - Figure 1
∆p
∆h
∆h
∆p
Reference plane
P1
H1
A
L
I2
H1
F
H
H0
B
W0
I1
P0
D0
DIMENSIONS =
MM
(INCHES)
W1
W
User direction of feed
Cross section A - B
Reel Dimensions - Figure 2
t
Reel
h
d
User
direction
of
feed
Upper side
Tape
Lower side
f
h
w
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.