SMP2 Datasheet, PDF (1/2 Pages) Bel Fuse Inc. – Surface Mount Power Cross Protection Fuse

26-Aug-03
defining a degree of excellence
Type SMP 2A
Surface Mount Power Cross Protection Fuse
SMP Surface mount Power Cross Protection Fuses are primarily
intended for use in telecommunication circuit applications requiring low
current protection with high surge tolerance. They are typically used to
replace heat coil type devices. They are designed to be placed between
the line input and the surge arresting components (mov. gas tube,
zenor diode, air gaps, etc.)
These fuses will withstand transient surge currents generated by
lighting in accordance with the attached table.
SMP fuses guard protected circuitry against sustained overload or
short circuit conditions. Such sustained overloads may be generated by
accidental contact between utility cables and phone lines (power line
cross).
SMP Fuse are used in circuits to obtain compliance with the test
requirements specified in UL 1950/60950 and Bellcore GR 1089.
Electrical Characteristics (UL STD. 248-14)
Testing Current
Blow Time
Minimum
Maximum
110%
4 hrs.
N/A
200%
N/A
60 sec
500%
100 msec
1.5 sec
1000%
30 msec
300 msec
Catalog Ampere
Number Rating
Voltage
Rating
Typical Cold
Resistance
(ohm)
Volt-drop
@100% In
(Volt) max.
Melting I²T Melting I²T
< 10 mSec @ 10 In
(A² Sec)
(A² Sec)
SMP 2
2A
600V
0.055
0.20
Consult manufacturer for other ratings
14.0
17.0
Maximum
Power
Dissipation
(w)
0.71
SURGE WITHSTAND RATINGS
Voltage
Peak
Surge
Current
Maximum
Rise/Duration
Time
1000V 120A
10 uS x 1000 uS
2500V 500A
2 uS x 10 uS
5000V 500A
2 uS x 10 uS
Repetitions
100 Pulses ( 50 Each Polarity)
40 Pulses ( 20 Each Polarity)
4 Pulses ( 2 Each Polarity)
Power Cross (Telecom) Rating
Overload Current
Voltage
Clearing Time Limit
Minimum Maximum
3A
600V
1.1 sec
900 sec
7A
600V
0.4 sec
2.5sec
30A
600V
N/A
65 msec
60A
600V
N/A
13 msec
Double -exponential Impulse Waveform
Current
(Peak Value) Ip
Waveform Duration Of A/B Seconds
A=Rise Time=T1-T0 (1.25(b-a)
B= Duration =T2-T0
Safety Agency Approvals
Approval Standards _{Interrupting Rating}
File No.
Power _{Intended Application}
Factor
Recognized File
no. E20624
60A@ 600Vac Resistive Telecom Protection
100A@ 125Vdc Resistive General Purpose
Environmental Specifications
Soldering Techniques & Compatability
Reflow: 240°C, 30sec max.
Wave Solder: 260°C, 3 sec max.
Shock
MIL-STD-202, Method 213, Test Condition I
(100 G's peak for 6 milliseconds).
Vibration
MIL-STD-202, Method 201 (10-55 Hz, 0.06 inch, total excursion).
Salt Spray
MIL-STD-202, Method 101, Test condition B (48 hrs).
Insulation Resistance
MIL-STD-202, Method 302, Test Condition A
(After Opening) 10,000 ohms minimum.
Solderability
MIL-STD-202, Method 208.
Resistance to solder Heat:
MIL-STD-202, Method 210, Test Condition J (235°C, 30 sec)
Thermal Shock
MIL-STD-202, Method 107, Test Condition B
(-65°C to +125°C)
Operating Temperature
-55°C to +125°C
Specification Subject To Change Without Notice
0.1 Ip
a
b
T0
T1
Physical specification
Materials
Ceramic Body / Tin Plated Brass Caps
Lead Free Solder
Marking
Packaging
On fuse: "bel", "Current Rating"
On label: Above info; "Type", "Voltage Rating", "Appropriate Safety Logos"
Interrupting Rating plus "
"
2000 fuses in 13 inches dia. Reel, 16mm wide tape, 8mm pitch, per EIA standard 481
Mechanical Dimensions
SMP
bel 2A
Time
T2