26-Aug-03

Typical Cold

Resistance

Volt-drop

@100% In

Melting I²T

< 10 mSec

Melting I²T

@ 10 In

Maximum

Power

(ohm)

(Volt) max.

(A² Sec)

(A² Sec)

Dissipation

(w)

SMP 2

2A

600V

0.055

0.20

14.0

17.0

0.71

Consult manufacturer for other ratings

SURGE WITHSTAND RATINGS

Voltage

Peak

Surge

Current

1000V

120A

2500V

500A

5000V

500A

Double -exponential Impulse Waveform

Electrical Characteristics (UL STD. 248-14)

Power Cross (Telecom) Rating

Minimum

Maximum

110%

600V

1.1 sec

900 sec

200%

600V

0.4 sec

2.5sec

500%

600V

N/A

65 msec

1000%

600V

N/A

13 msec

Safety Agency Approvals

Approval Standards

File No.

Power

Factor

Physical specification

Materials

Ceramic Body / Tin Plated Brass Caps

Lead Free Solder

Marking

On fuse: "bel", "Current Rating"

On label: Above info; "Type", "Voltage Rating", "Appropriate Safety Logos"

Environmental Specifications

Interrupting Rating plus "

"

Soldering Techniques & Compatability

Packaging

2000 fuses in 13 inches dia. Reel, 16mm wide tape, 8mm pitch, per EIA standard 481

Reflow: 240°C, 30sec max.

Wave Solder: 260°C, 3 sec max.

Mechanical Dimensions

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

Clearing Time Limit

3A

7A

30A

Voltage

60A

Overload Current

Catalog

Number

Ampere

Rating

Voltage

Rating

Maximum

Rise/Duration

Time

Repetitions

10 uS x 1000 uS

100 Pulses ( 50 Each Polarity)

2 uS x 10 uS

40 Pulses ( 20 Each Polarity)

2 uS x 10 uS

4 Pulses ( 2 Each Polarity)

Testing Current

Blow Time

Minimum

Maximum

4 hrs.

N/A

N/A

60 sec

Recognized File

no. E20624

60A@ 600Vac

Resistive

Telecom Protection

100A@ 125Vdc

Resistive

General Purpose

Interrupting Rating

Intended Application

100 msec

1.5 sec

30 msec

300 msec

SMP

bel 2A

defining a degree of excellence

0.1 Ip

b

T2

T1

T0

a

(Peak Value) Ip

Current

Time

A=Rise Time=T1-T0 (1.25(b-a)

B= Duration =T2-T0

Waveform Duration Of A/B Seconds

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.