MF-RX012_07 Datasheet, PDF (1/5 Pages) Bourns Electronic Solutions – Telecom PTC Resettable Fuses

*RoHS ^COMPLIANT
2R4X000112K
Features
■ Radial Leaded Devices
■ Fast tripping resettable PTCs
■ Binned and sorted narrow resistance
ranges available
■ RoHS compliant*
■ Lead free
■ Agency recognition:
T V Rheinland
Applications
■ Customer Premise Equipment (CPE)
■ Central Office / Telecom Centers (CO)
■ Access equipment
MF-RX/250 Series - Telecom PTC Resettable Fuses
Electrical Characteristics
Model
Max.
Operating
Voltage
(Vdc)
Max.
Interrupt
Ratings
Volts
(Vrms)
Amps
(A)
Max.
Max.
MF-RX012/250
60
250
3.0
MF-RX012/250-A
60
250
3.0
MF-RX012/250-C
60
250
3.0
MF-RX012/250-F
60
250
3.0
MF-RX012/250-1
60
250
3.0
MF-RX012/250-2
60
250
3.0
MF-RX012/250-T
60
250
3.0
MF-RX012/250U
60
250
3.0
MF-RX014/250
60
250
3.0
MF-RX014/250-A
60
250
3.0
MF-RX014/250-B
60
250
3.0
MF-RX014/250-T
60
250
3.0
MF-RX014/250U
60
250
3.0
MF-RX018/250
60
250
10.0
MF-RX018/250U
60
250
10.0
“U” suffix indicates product without insulation coating.
Hold
Current
Amps
at
23 °C
IH
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.145
0.145
0.145
0.145
0.145
0.18
0.18
Initial
Resistance
Ohms
at
23 °C
Ohms
at
23 °C
Min.
Max.
4.0
8.0
7.0
9.0
5.5
7.5
6.0
10.5
6.0
9.0
8.0
10.5
7.0
12.0
6.0
10.0
3.0
6.0
3.0
5.5
4.5
6.0
5.4
7.5
3.5
6.5
0.8
2.0
0.8
2.0
One Hour
Post-Trip
Resistance
Ohms
at
23 °C
Max.
16.0
16.0
14.0
16.0
16.0
16.0
16.0
16.0
14.0
12.0
14.0
14.0
12.0
4.0
4.0
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 ........................................................±15 % typical resistance change
+60°C, 1000 hours
±15 % typical resistance change
Humidity Aging ........................................................+85 °C, 85 % R.H. 500 hours ..........................................±15 % 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 ..............................................................>95 % coverage
Flammability ............................................................IEC 695-2-2......................................................................No Flame for 60 secs.
Vibration ..................................................................MIL-STD-883C, Method 2007.1, Condition A..................±5 % typical resistance change
Test Procedures And Requirements For Model MF-RX/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 ≤ R1max
Time to Trip ........................................................At specified current, Vmax, 23 °C ..............T ≤ typical 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 ................................................R02057213
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.