3006 - Trimpot® Trimming Potentiometer
Features
n Axial leaded
n Weldable nickel terminals
n Very low internal resistance
n Operating currents to 9.0 amps
n RoHS compliant*
n Agency recognition:
Applications
Any application that requires protection at low
resistances:
n Rechargeable battery pack protection
n Cellular phones
n Laptop computers
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. Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
*RoHS COMPLIANT
LEAD FREE
*RoHS COMPLIANT
VERSIONS
AVAILABLE
LEAD FREE
VERSIONS ARE
RoHS COMPLIANT*
Environmental Characteristics
Operating/Storage Temperature ........................... -40 °C to +85 °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 specied 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
cUL File Number ................................................... E174545
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-LR260 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-LR550/20 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
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-LR260 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-LR550/20 20 100 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
Itrip is approximately two times Ihold.
3312 - 2 mm SMD Trimming Potentiometer
Typical Time to Trip at 23 ˚C
How to Order
MF - LR 730/20 - 0
Multifuse® Product
Designator
Series
LR = Axial Leaded “Strap”
Component
Hold Current, Ihold/Vmax*
190-900 (1.90 Amps - 9.00 Amps)
Packaging Options
-__ = Bulk Packaging Designator
for Models MF-LR190 through
MF-LR730
-0 = Bulk Packaging Designator
for Models MF-LR550/20,
MF-LR730/20 and
MF-LR900/20
*Vmax entry applies only to Models MF-LR550/20,
MF-LR730/20 & MF-LR900/20.
**Packaged per EIA 486-B
Product Dimensions
Model A B C D F
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
MF-LR190 19.9
(0.783)
22.1
(0.870)
4.9
(0.193)
5.2
(0.205)
0.6
(0.024)
1.0
(0.039)
5.5
(0.217)
7.5
(0.295)
3.9
(0.154)
4.1
(0.161)
MF-LR260 20.9
(0.823)
23.1
(0.909)
4.9
(0.193)
5.2
(0.205)
0.6
(0.024)
1.0
(0.039)
4.1
(0.161)
5.5
(0.217)
3.9
(0.154)
4.1
(0.161)
MF-LR380 24.0
(0.945)
26.0
(1.024)
6.9
(0.272)
7.5
(0.295)
0.6
(0.024)
1.0
(0.039)
4.1
(0.161)
5.5
(0.217)
4.9
(0.193)
5.1
(0.201)
MF-LR450 24.0
(0.945)
26.0
(1.024)
9.9
(0.390)
10.5
(0.414)
0.6
(0.024)
1.0
(0.039)
5.3
(0.209)
6.7
(0.264)
5.9
(0.232)
6.1
(0.240)
MF-LR550 35.0
(1.378)
37.0
(1.457)
6.9
(0.272)
7.5
(0.295)
0.6
(0.024)
1.0
(0.039)
5.3
(0.209)
6.7
(0.264)
4.9
(0.193)
5.1
(0.201)
MF-LR550/20 35.0
(1.378)
37.0
(1.457)
6.9
(0.272)
7.5
(0.295)
0.6
(0.024)
1.0
(0.039)
5.3
(0.209)
6.7
(0.264)
4.9
(0.193)
5.1
(0.201)
MF-LR600 24.0
(0.945)
26.0
(1.024)
13.9
(0.547)
15.9
(0.626)
0.6
(0.024)
1.0
(0.039)
4.1
(0.161)
5.5
(0.217)
5.9
(0.232)
6.1
(0.240)
MF-LR730 30.0
(1.18)
29.1
(1.146)
13.9
(0.547)
15.0
(0.590)
0.6
(0.024)
1.0
(0.039)
4.1
(0.161)
5.5
(0.217)
5.9
(0.232)
6.1
(0.240)
MF-LR730/20 27.1
(1.067)
29.1
(1.146)
13.9
(0.547)
14.5
(0.571)
0.6
(0.024)
1.0
(0.039)
4.1
(0.161)
5.5
(0.217)
5.9
(0.232)
6.1
(0.240)
MF-LR900/20 45.4
(1.787)
47.6
(1.874)
7.9
(0.311)
8.5
(0.335)
0.6
(0.024)
1.3
(0.051)
4.6
(0.181)
9.2
(0.362)
5.9
(0.232)
6.1
(0.240)
Packaging: Bulk - 500 pcs. per bag. Tape and Reel - Consult factory.
DIMENSIONS: MM
(INCHES) Typical Part Marking
Represents total content. Layout may vary.
Specifications are subject to change without notice.
Users should verify actual device
performance in their specific applications.
The products described herein and this document are subject
to specific legal disclaimers as set forth on the last page of
this document, and at www.bourns.com/docs/legal/
disclaimer.pdf.
MF-LR Series - PTC Resettable Fuses
F
B
D D
C
A
F
B
D D
A
Standard Style "S" Style
C
SLIT NOMINAL
0.5
(.020)
4.0
(.157)
X
MANUFACTURER'S
TRADEMARK PART
IDENTIFICATION
LOT NO.
(T = TAIWAN
S = CHINA)
LR190
0144T
DATE CODE
(FIRST DIGIT =
LAST DIGIT OF YEAR;
NEXT THREE DIGITS =
DAY OF YEAR)
MF-LR SERIES, REV. W, 04/17
.01
110 100
1
10
100
Fault Current (Amps)
Time to Trip (Seconds)
MF-LR190
MF-LR260
MF-LR380
MF-LR450
MF-LR550
MF-LR550/20
MF-LR600
MF-LR730 & MF-LR730/20
MF-LR900/20
MF-S, MF-LS, MF-LR* and MF-VS Series Tape and Reel Specifications
DIMENSIONS: MM
(INCHES)
Taped Component Dimensions
PASTEBOARD
HOLD
PASTEBOARD
HOLD
4.0 ± 0.2
(.157 ± .008)
2.0
(.079)
RADIUS
DIA.
13.0
(.512)
DIA.
1.0 + 0.1/ -0
(.039 + .004/-0)
5.56 ± 0.10
(.219 ± .004)
4.0 ± 0.1
(.157 ± .004)
12.0 ± 0.1
(.472 ± .004)
48.0 ± 0.3
(1.90 ± .012)
0.2
(.008)MAX.
330
(13.0)
8.0 ± 0.2
(.315 ± .008)
Reel Dimensions
*Bulk packaging is standard for Model MF-LR Series; consult factory for tape and reel option.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
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C1753 05/17/18R