Features
Applications
nꢀ 72ꢀVꢀrated
Almostꢀanywhereꢀthereꢀisꢀaꢀlowꢀvoltageꢀpowerꢀ
supply,ꢀupꢀtoꢀ72ꢀVꢀandꢀaꢀloadꢀtoꢀbeꢀprotected,ꢀ
including:
nꢀ Radialꢀleadedꢀdevices
nꢀ Cured,ꢀflameꢀretardantꢀepoxyꢀpolymerꢀꢀ
RX110
4180S
nꢀ Securityꢀandꢀfireꢀalarmꢀsystems
nꢀ Loudspeakers
ꢀ
ꢀ
insulatingꢀmaterialꢀmeetsꢀULꢀ94ꢀV-0ꢀꢀ
requirements
nꢀ RoHSꢀcompliant*ꢀandꢀhalogenꢀfree**
nꢀ Agencyꢀrecognition:
nꢀ Powerꢀtransformers
ꢀ ꢀꢀMF-RX/72ꢀSeriesꢀ-ꢀ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.
I max.
Amps
Model
Volts
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
0.40
0.50
0.60
0.80
1.00
1.30
1.50
1.80
2.20
2.70
3.20
3.70
5.00
6.00
7.50
Min.
Max.
2.84
1.95
1.36
0.86
0.77
0.48
0.40
0.31
0.25
0.19
0.14
0.12
0.08
0.06
0.05
Max.
4.40
3.00
2.10
1.29
1.17
0.72
0.60
0.47
0.38
0.30
0.22
0.19
0.13
0.10
0.08
Typ.
0.40
0.45
0.50
0.55
0.75
0.90
0.90
1.00
1.50
1.70
1.90
2.10
2.50
2.80
3.20
MF-RX020/72
MF-RX025/72
MF-RX030/72
MF-RX040/72
MF-RX050/72
MF-RX065/72
MF-RX075/72
MF-RX090/72
MF-RX110/72
MF-RX135/72
MF-RX160/72
MF-RX185/72
MF-RX250/72
MF-RX300/72
MF-RX375/72
72
72
72
72
72
72
72
72
72
72
72
72
72
72
72
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
0.20
0.25
0.30
0.40
0.50
0.65
0.75
0.90
1.10
1.35
1.60
1.85
2.50
3.00
3.75
1.50
1.00
0.76
0.52
0.41
0.27
0.18
0.14
0.15
0.12
0.09
0.08
0.05
0.04
0.03
1.0
1.25
1.5
2.0
2.5
3.25
3.75
4.5
5.5
6.75
8.0
2.2
2.5
3.0
3.9
4.0
5.3
6.3
7.2
8.2
9.6
11.4
12.6
15.6
19.8
24.0
9.25
12.5
15.0
18.75
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 .................................................... E174545
ꢀ
http://www.ul.com/ꢀꢀFollowꢀlinkꢀtoꢀCertifications,ꢀthenꢀULꢀFileꢀNo.,ꢀenterꢀE174545
TÜVꢀCertificateꢀNumber ....................................... R 02057213
ꢀ
http://www.tuvdotcom.com/ꢀFollowꢀlinkꢀtoꢀ“otherꢀcertificates”,ꢀenterꢀFileꢀNo.ꢀ2057213
*ꢀRoHSꢀDirectiveꢀ2002/95/ECꢀJan.ꢀ27,ꢀ2003ꢀincludingꢀannexꢀandꢀRoHSꢀRecastꢀ2011/65/EUꢀJuneꢀ8,ꢀ2011.ꢀ
**ꢀBournsꢀconsidersꢀaꢀproductꢀtoꢀbeꢀ“halogenꢀfree”ꢀifꢀ(a)ꢀtheꢀBromineꢀ(Br)ꢀcontentꢀisꢀ900ꢀppmꢀorꢀless;ꢀ
(b)ꢀtheꢀChlorineꢀ(Cl)ꢀcontentꢀisꢀ900ꢀppmꢀorꢀless;ꢀandꢀ(c)ꢀtheꢀtotalꢀBromineꢀ(Br)ꢀandꢀChlorineꢀ(Cl)ꢀcontentꢀisꢀ1500ꢀppmꢀorꢀless.
Specificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
ꢀ
Theꢀdeviceꢀcharacteristicsꢀandꢀparametersꢀinꢀthisꢀdataꢀsheetꢀcanꢀandꢀdoꢀvaryꢀinꢀdifferentꢀapplicationsꢀandꢀactualꢀdeviceꢀperformanceꢀmayꢀvaryꢀoverꢀtime.
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.