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MF-LR190S Datasheet(PDF) 1 Page - Bourns Electronic Solutions

Part # MF-LR190S
Description  PTC Resettable Fuses
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Manufacturer  BOURNS [Bourns Electronic Solutions]
Direct Link  http://www.bourns.com
Logo BOURNS - Bourns Electronic Solutions

MF-LR190S Datasheet(HTML) 1 Page - Bourns Electronic Solutions

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Features
Axial leaded
Fully compatible with current industry
standards
Weldable nickel terminals
Very low internal resistance
Operating currents to 9.0 amps
RoHS compliant*
Agency recognition:
MF-LR Series - PTC Resettable Fuses
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
Environmental Characteristics
Operating/Storage Temperature ........................... -40 °C to +85 °C
Maximum Device Surface Temperature
in Tripped State ................................................ 125 °C
Passive Aging ....................................................... +70 °C, 1000 hours............................................... ±10 % typical resistance change
Humidity Aging...................................................... +85 °C, 85% R.H. 7 days...................................... ±10 % typical resistance change
Vibration ............................................................... MIL-STD-883C,..................................................... No change
Condition A
Test Procedures And Requirements For Model MF-LR 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 ≤ R1max
Time to Trip........................................................... At specified current, 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
CSA File Number.................................................. CA 110338
TÜV File Number.................................................. R2057213
Electrical Characteristics
Thermal Derating Chart - Ihold (Amps)
Model
Ambient Operating Temperature
-40 ºC
-20 ºC
0 ºC
23 ºC
40 ºC
50 ºC
60 ºC
70 ºC
85 ºC
MF-LR190
2.8
2.5
2.3
1.9
1.6
1.5
1.4
1.2
1.0
MF-LR190S
2.8
2.5
2.3
1.9
1.6
1.5
1.4
1.2
1.0
MF-LR260
3.8
3.4
3.1
2.6
2.2
2.0
1.9
1.7
1.4
MF-LR260S
3.8
3.4
3.1
2.6
2.2
2.0
1.9
1.7
1.4
MF-LR380
5.5
4.9
4.4
3.8
3.3
3.0
2.8
2.5
2.1
MF-LR450
6.5
5.8
5.3
4.5
3.9
3.6
3.3
2.9
2.5
MF-LR550
8.0
7.1
6.2
5.5
4.7
4.3
4.0
3.6
3.0
MF-LR600
8.7
7.8
7.1
6.0
5.2
4.7
4.4
3.9
3.3
MF-LR730
10.5
9.5
8.6
7.3
7.4
6.8
6.2
5.5
4.5
MF-LR730/20
10.5
9.5
8.6
7.3
7.4
6.8
6.2
5.5
4.5
MF-LR900/20
12.7
11.4
10.0
9.0
7.5
6.8
6.2
5.5
4.5
** TÜV recognition and UL approval pending.
Model
V max.
Volts
I max.
Amps
Ihold
Itrip
Initial
Resistance
1 Hour (R1)
Post-Trip
Resistance
Max. Time
to Trip
Tripped Power
Dissipation
Amperes
at 23 °C
Ohms
at 23 °C
Ohms
at 23 °C
Amperes
at 23 °C
Seconds
at 23 °C
Watts
at 23 °C
Hold
Trip
Min.
Max.
Max.
Typ.
MF-LR190
15
100
1.90
3.90
0.039
0.072
0.102
9.5
5.0
1.2
MF-LR190S
15
100
1.90
3.90
0.039
0.072
0.102
9.5
5.0
1.2
MF-LR260
15
100
2.60
5.80
0.020
0.042
0.083
13.0
5.0
1.3
MF-LR260S
15
100
2.60
5.80
0.020
0.042
0.083
13.0
5.0
1.3
MF-LR380
15
100
3.80
8.30
0.013
0.026
0.037
19.0
5.0
2.5
MF-LR450
16
100
4.50
8.90
0.011
0.020
0.028
22.5
5.0
1.4
MF-LR550
10
100
5.50
10.50
0.009
0.019
0.022
27.5
5.0
1.4
MF-LR600
10
100
6.00
11.70
0.007
0.014
0.019
30.0
5.0
2.8
MF-LR730
10
100
7.30
14.10
0.006
0.012
0.015
30.0
5.0
3.0
MF-LR730/20**
20
100
7.30
14.10
0.006
0.012
0.015
30.0
5.0
3.0
MF-LR900/20**
20
100
9.00
16.70
0.006
0.010
0.014
45.0
5.0
3.0
0144T
Itrip is approximately two times Ihold.
The slotted lead option is currently
available but not, recommended for
new designs.


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