MF-SM013 Datasheet, PDF (1/4 Pages) Bourns Electronic Solutions – Telecom PTC Resettable Fuses

*RoHS ^COMPLIANT
Features
■ Surface mount devices
■ High voltage surge capabilities
■ Binned and sorted resistance ranges
■ Assists in meeting ITU K.20/K.21
specifications
■ RoHS compliant*
■ Agency recognition:
Applications
Used as a secondary overcurrent protection
device in:
■ Customer Premise Equipment (CPE)
■ Central Office (CO)
■ Subscriber Line Interface Cards (SLIC)
MF-SM013/250 - Telecom PTC Resettable Fuses
Electrical Characteristics
Model
Max.
Operating
Voltage
Volts
(V)
MF-SM013/250-2
60
MF-SM013/250-A-2
60
MF-SM013/250-B-2
60
MF-SM013/250-C-2
60
Max. Interrupt
Ratings
Volts
(V)
Max.
250
250
250
250
Amps
(A)
Max.
3.0
3.0
3.0
3.0
Hold
Current
Amps
at 23 °C
IH
0.13
0.13
0.13
0.13
Initial
Resistance
Ohms
at 23 °C
Min.
6.5
6.5
9.0
7.0
Ohms
at 23 °C
Max.
12.0
9.0
12.0
10.0
One Hour
Post-Trip
Resistance
Ohms
at 23 °C
Max.
20.0
20.0
20.0
20.0
Tripped
Power
Dissipation
Watts
at 23 °C
Typ.
3.3
3.3
3.3
3.3
Environmental Characteristics
Operating Temperature......................................... -45 °C to +85 °C
Maximum Device Surface Temperature
in Tripped State ................................................ 125 °C
Passive Aging ....................................................... +85 °C, 1000 hours............................................... ±2 % typical resistance change
+60 °C, 1000 hours............................................... ±3 % typical resistance change
Humidity Aging...................................................... +85 °C, 85 % R.H. 500 hours ............................... ±3 % typical resistance change
Thermal Shock ..................................................... MIL-STD-202F, Method 107G,.............................. ±10 % typical resistance change
.......................................................................... +125 °C to -55 °C,10 times................................... ±15 % typical resistance change
Solvent Resistance............................................... MIL-STD-202, Method 215B................................. No change
Lead Solerability ................................................... ANSI/J-STD-002
Flammability ......................................................... IEC 695-2-2 .......................................................... No Flame for 60 secs.
Vibration ............................................................... MIL-STD-883C, Method 2007.1, Condition A ....... No change
Test Procedures And Requirements For Model MF-SM013/250 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...................................................... 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
Solderability ..................................................... MIL-STD-202F, Method 208F ...........................95 % min. coverage
UL File Number ............................................... E 174545S
CSA File Number............................................. CA 110338
TÜV File Number............................................. R2057213
Thermal Derating Chart - Ihold/ Itrip (Amps)
Model
MF-SM013/250-2
MF-SM013/250-A-2
MF-SM013/250-B-2
MF-SM013/250-C-2
-40 ºC
0.21 / 0.42
0.21 / 0.42
0.21 / 0.42
0.21 / 0.42
-20 ºC
0.18 / 0.37
0.18 / 0.37
0.18 / 0.37
0.18 / 0.37
0 ºC
0.16 / 0.31
0.16 / 0.31
0.16 / 0.31
0.16 / 0.31
Ambient Operating Temperature
23 ºC
40 ºC
50 ºC
0.13 / 0.26 0.10 / 0.23 0.09 / 0.18
0.13 / 0.26 0.10 / 0.23 0.09 / 0.18
0.13 / 0.26 0.10 / 0.23 0.09 / 0.18
0.13 / 0.26 0.10 / 0.23 0.09 / 0.18
60 ºC
0.08 / 0.15
0.08 / 0.15
0.08 / 0.15
0.08 / 0.15
70 ºC
0.07 / 0.12
0.07 / 0.12
0.07 / 0.12
0.07 / 0.12
85 ºC
0.05 / 0.10
0.05 / 0.10
0.05 / 0.10
0.05 / 0.10
*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.
Customers should verify actual device performance in their specific applications.