ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀTheꢀMF-RXꢀSeriesꢀisꢀcurrentlyꢀꢀ
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀavailable,ꢀalthoughꢀnotꢀrecommendedꢀ
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀforꢀnewꢀdesigns.ꢀTheꢀhigherꢀvoltageꢀ
ratedꢀMF-RX/72ꢀSeriesꢀisꢀpreferred.
Features
nꢀ RadialꢀLeadedꢀDevices
nꢀ Cured,ꢀflameꢀretardantꢀepoxyꢀpolymerꢀꢀ
R
X
1
1
ꢀ
ꢀ
insulatingꢀmaterialꢀmeetsꢀULꢀ94V-0ꢀꢀ
requirements
0
7180T
nꢀ Agencyꢀrecognition:
nꢀ RoHSꢀcompliant*ꢀandꢀhalogenꢀfree**
ꢀ ꢀꢀMF-RXꢀSeriesꢀ-ꢀPTCꢀResettableꢀFuses
Electrical Characteristics
1 Hour (R )
1
Tripped
Power
Dissipation
Initial
Resistance
Max. Time
to Trip
I
I
Post-Trip
hold
trip
Resistance
V max.
Volts
I max.
Amps
Model
Amperes
at 23 °C
Ohms
at 23 °C
Ohms
at 23 °C
Amperes Seconds
Watts
at 23 °C
at 23 °C
at 23 °C
Hold
Trip
Min.
Max.
Max.
Typ.
MF-RX110
MF-RX135
MF-RX160
MF-RX185
MF-RX250
MF-RX300
MF-RX375
60
60
60
60
60
60
60
40
40
40
40
40
40
40
1.10
1.35
1.60
1.85
2.50
3.00
3.75
2.20
2.70
3.20
3.70
5.00
6.00
7.50
0.15
0.12
0.09
0.08
0.05
0.04
0.03
0.25
0.19
0.14
0.12
0.08
0.06
0.05
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
1.50
1.70
1.90
2.10
2.50
2.80
3.20
11.4
12.6
15.6
19.8
24.0
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 ..................................................... -40 °C to +85 °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
Moisture Sensitivity Level..................................... 1
ESD Classification (HBM)..................................... 6
Test Procedures And Requirements For Model MF-RX 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 .....................................................E174545
http://www.ul.com/ Follow link to Online Certificates Directory, then enter UL File No.
E174545, or click here
TÜV Certificate ......................................................Certificate Number Available on Request, or click here
Thermal Derating Chart - I
/ I
(Amps)
hold trip
Ambient Operating Temperature
23 ºC 40 ºC 50 ºC
Model
-40 ºC
-20 ºC
0 ºC
60 ºC
70 ºC
85 ºC
MF-RX110
MF-RX135
MF-RX160
MF-RX185
MF-RX250
MF-RX300
MF-RX375
1.71 / 3.42 1.50 / 3.00 1.31 / 2.62 1.10 / 2.20 0.89 / 1.78 0.79 / 1.58 0.69 / 1.38 0.59 / 1.18 0.44 / 0.88
2.09 / 4.18 1.84 / 3.68 1.61 / 3.22 1.35 / 2.70 1.09 / 2.18 0.97 / 1.94 0.85 / 1.70 0.73 / 1.46 0.54 / 1.08
2.48 / 4.96 2.18 / 4.36 1.90 / 3.80 1.60 / 3.20 1.30 / 2.60 1.15 / 2.30 1.01 / 2.02 0.86 / 1.72 0.64 / 1.28
2.87 / 5.74 2.52 / 5.04 2.20 / 4.40 1.85 / 3.70 1.50 / 3.00 1.33 / 2.66 1.17 / 2.34 1.00 / 2.00 0.74 / 1.48
3.88 / 7.76 3.40 / 6.80 2.98 / 5.96 2.50 / 5.00 2.03 / 4.06 1.80 / 3.60 1.58 / 3.16 1.35 / 2.70 1.00 / 2.00
4.65 / 9.30 4.08 / 8.16 3.57 / 7.14 3.00 / 6.00 2.43 / 4.86 2.16 / 4.32 1.89 / 3.78 1.62 / 3.24 1.20 / 2.40
5.81 / 11.6 5.10 / 10.2 4.46 / 8.92 3.75 / 7.50 3.04 / 6.08 2.70 / 5.40 2.36 / 4.72 2.03 / 4.06 1.50 / 3.00
*ꢀRoHSꢀDirectiveꢀ2002/95/ECꢀJan.ꢀ27,ꢀ2003ꢀincludingꢀannexꢀandꢀRoHSꢀRecastꢀ2011/65/EUꢀJuneꢀ8,ꢀ2011.ꢀ
**ꢀBournsꢀfollowsꢀtheꢀprevailingꢀdefinitionꢀofꢀ“halogenꢀfree”ꢀinꢀtheꢀindustry.ꢀꢀBournsꢀconsidersꢀaꢀproductꢀtoꢀbeꢀ“halogenꢀfree”ꢀifꢀ(a)ꢀtheꢀBromineꢀ(Br)ꢀcontentꢀisꢀ900ꢀppmꢀorꢀless;ꢀꢀ
ꢀ
(b)ꢀtheꢀChlorineꢀ(Cl)ꢀcontentꢀisꢀ900ꢀppmꢀorꢀless;ꢀandꢀ(c)ꢀtheꢀtotalꢀBromineꢀ(Br)ꢀandꢀChlorineꢀ(Cl)ꢀcontentꢀisꢀ1500ꢀppmꢀorꢀless.
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
Theꢀdeviceꢀcharacteristicsꢀandꢀparametersꢀinꢀthisꢀdataꢀsheetꢀcanꢀandꢀdoꢀvaryꢀinꢀdifferentꢀapplicationsꢀandꢀactualꢀdeviceꢀperformanceꢀmayꢀvaryꢀoverꢀtime.
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.
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