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PL IA NT
Features
Tip & ring line protection with two devices
Applications
Used as a secondary overcurrent protection device in: Customer Premise Equipment (CPE) Central Office (CO) Subscriber Line Interface Cards (SLIC)
CO M
in one package Surface mount device High voltage surge capabilities Assists in meeting ITU-T K.20/K.21/K.45 specifications as well as Telcordia GR-1089 intra-building RoHS compliant*
*R oH S
MF-SD/250 Series - Telecom PTC Resettable Fuses
Electrical Characteristics
Max. Operating Voltage Volts Max. Interrupt Ratings Volts (V) Amps (A) Ihold Itrip Initial Resistance Ohms at 23 C Min. Max. 1 Hour (R1) Post-Trip Resistance* Ohms at 23 C Max. Nominal Time to Trip Amps at 23 C Seconds at 23 C Tripped Power Dissipation Watts at 23 C Typ.
Model
Amperes at 23 C Hold Trip
MF-SD013/250
60
250
3.0
0.13
0.26
2.0
7.0
10.0
1
2.0
1.5
* R1 value is measured 24 hours post reflow. Resistance matched in housing: 1.0 ohm measured 24 hours after reflow installation.
Environmental Characteristics Operating Temperature.................................... -45 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. 1000 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 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-SD/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 Primary Test Test Conditions Protection Mains Power Contact - ITU-T K.20, K.21........ 230 V rms, 10 ohms, t = 15 min. ..................... None Power Induction - ITU-T K.20, K.21 ................ 600V rms, 600 ohms, t = 0.2 seconds ............. None Power Induction - ITU-T K.20, K.21 ................ 600 V rms, 600 ohms, t = 1 second. ............... GDT Lightning Surge - ITU-T K.20, K.21 ................. 1.5 KV, 10/700 s............................................. None Lightning Surge ............................................... 4.0 KV, 10/700 s............................................. GDT
Thermal Derating Chart -Ihold (Amps)
Model MF-SD013/250 Ambient Operating Temperature -40 C 0.21 -20 C 0.18 0 C 0.16 23 C 0.13 40 C 0.10 50 C 0.09 60 C 0.08 70 C 0.07 85 C 0.05
Asia-Pacific: Tel: +886-2 2562-4117 * Fax: +886-2 2562-4116 Europe: Tel: +41-41 768 5555 * Fax: +41-41 768 5510 The Americas: Tel: +1-951 781-5500 * Fax: +1-951 781-5700 www.bourns.com
*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.
MF-SD/250 Series - Telecom PTC Resettable Fuses
Product Dimensions
8.90 (.350) MAX.
Recommended Pad Layout
7.2 (.283) MAX. MAX. 8.90 (.350)
10.2 (402) MAX.
DIMENSIONS:
MM (INCHES)
6.3 (.248) 3.9 (.154)
2.4 (.094) 3.9 (.154)
0.5 (.020) 2 PLCS.
7.2 MAX. (.283)
8.2 (.323)
3.2 (.126)
2.4 (.094) 2.0 (.079)
Packaging: TAPE & REEL = 400 pcs. per reel
Typical Part Marking Typical Time to Trip at 23 C
1000
S D013 MANUFACTURER'S TRADEMARK PART IDENTIFICATION
100
Time to Trip (Seconds)
How to Order
10
MF - SD 013/250 - 2
Multifuse Product Designator
(R)
1
Series SD = Surface Mount Dual Package Hold Current, Ihold 013 (0.13 Amps) Max. Interrupt Voltage, V 250 = 250 Volts
0.1
0.01 0 0.5 1 1.5 2 2.5 3
Packaging - 2 = Tape and Reel* *Packaged per EIA481-2
Fault Current (Amps)
Solder Reflow Recommendations
300 250 200 150 100 50 0 160-220 10-20 Time (seconds) 120
Storage Recommendations
Cooling
Preheating
Soldering
Solder reflow: * Recommended reflow methods: IR, vapor phase oven, hot air oven. * Devices are not designed to be wave soldered to the bottom side of the board. * Gluing the devices is not recommended. * Recommended maximum paste thickness is 0.25 mm (.010 inch). * Devices can be cleaned using standard industry methods and solvents.
The recommended long term storage conditions for Multifuse(R) Polymer PTC devices are 40 C maximum and 70 % RH maximum. All devices should remain in the original sealed packaging prior to use. Devices may not conform with data sheet specifications if these storage recommendations are exceeded. Devices stored in this manner have an indefinite shelf life.
Note: * If reflow temperatures exceed the recommended profile, devices may not meet the performance requirements. Rework: * A device should not be reworked.
Temperature (C)
Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.
MF-SD/250 Series - Telecom PTC Resettable Fuses
Packaging Dimensions
Tape Dimensions W P0 P P2 A0 B0 D F E t K0 Leader min. Trailer min. MF-SD/250 Series per EIA 481-2 24.0 0.5 (0.945 0.020) 4.0 (0.157) 16.0 (0.630) 2.0 (0.079) 7.5 0.2 (0.295 0.008) 9.0 0.2 (0.354 0.008) 1.5 (0.059) 11.5 (0.453) 1.75 (0.069) 0.5 0.15 (0.020 0.006) 10.0 0.2 (0.394 0.008) 390 (15.35) 160 (6.30)
D
P2
P0
E
T
-0.4 (-.016) 330 -2/+0 (12.99 -.079/+0) DIA.
F W B0 P A0
K0
24.4 (.961) MIN.
30.4 (1.197) MAX.
13.2 +0.2/-0 (.520 +.008/-0 100 1.5 (3.94 .059) DIA.
DIMENSIONS:
MM (INCHES)
MF-SD/250, REV. A 03/10
Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.

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