MF-LR_13 Datasheet, PDF (1/4 Pages) Bourns Electronic Solutions – PTC Resettable Fuses

*RoHS ^COMPLIANT
0144T
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:
The slotted lead option is currently
available but not, recommended for
new designs.
MF-LR Series - PTC Resettable Fuses
Electrical Characteristics
Model
V max. I max.
Volts Amps
MF-LR190
15
100
MF-LR190S
15
100
MF-LR260
15
100
MF-LR260S
15
100
MF-LR380
15
100
MF-LR450
16
100
MF-LR550
10
100
MF-LR600
10
100
MF-LR730
10
100
MF-LR730/20** 20
100
MF-LR900/20** 20
100
** TÜV recognition and UL approval pending.
Ihold
Itrip
Amperes
at 23 °C
Hold
Trip
1.90
3.90
1.90
3.90
2.60
5.80
2.60
5.80
3.80
8.30
4.50
8.90
5.50
10.50
6.00
11.70
7.30
14.10
7.30
14.10
9.00
16.70
Initial
Resistance
Ohms
at 23 °C
Min.
Max.
0.039
0.072
0.039
0.072
0.020
0.042
0.020
0.042
0.013
0.026
0.011
0.020
0.009
0.019
0.007
0.014
0.006
0.012
0.006
0.012
0.006
0.010
1 Hour (R1)
Post-Trip
Resistance
Ohms
at 23 °C
Max.
0.102
0.102
0.083
0.083
0.037
0.028
0.022
0.019
0.015
0.015
0.014
Max. Time
to Trip
Tripped Power
Dissipation
Amperes Seconds
at 23 °C at 23 °C
9.5
5.0
9.5
5.0
13.0
5.0
13.0
5.0
19.0
5.0
22.5
5.0
27.5
5.0
30.0
5.0
30.0
5.0
30.0
5.0
45.0
5.0
Watts
at 23 °C
Typ.
1.2
1.2
1.3
1.3
2.5
1.4
1.4
2.8
3.0
3.0
3.0
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
Thermal Derating Chart - Ihold (Amps)
Model
-40 ºC
-20 ºC
0 ºC
Ambient Operating Temperature
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
Itrip is approximately two times Ihold.
*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.