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  Datasheet File OCR Text:
 Type SMP
SMPD0104
Surface Mount Power Cross Protection Fuse
Catalog Number Ampere Rating Voltage Rating Typical Cold Resistance (ohm) Volt-drop @100% In (Volt) max. Melting I2T < 10 mSec (A2 Sec) Melting I2T @10 In (A2 Sec) Peak Surge Current (Amp) 50 Pulses 1,000V 10 uS x 1000 uS Peak Surge Current (Amp) 10 Pulses 1,000V 10 uS x 1000 uS Maximum Power Dissipation (W)
SMP 500 SMP 1.25
500mA 1.25A
600V 600V
0.350 0.090
0.28 0.18
1.4 14
1.8 17
25 100
35 N/A
0.25 0.40
Consult manufacturer for other ratings
SMP 1.25 Surge Withstand Ratings
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 lightning 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.
Voltage
1000V 2500V 5000V
Peak Maximum Surge Rise/Duration Current Time
100A 500A 500A 10 uS x 1000 uS 2 uS x 10 uS 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 (Fuse Rated 0.1-1.5A)
Overload Current
200% Fuse Rating 2.2A 7A 40A 60A
Double-exponential Impulse Waveform
Current (Peak Value) lp 0.9 lp
Voltage
600V 600V 600V 600V 600V
Clearing Time Limit 1.25A
max. 60 sec max. 15 min max. 1 sec max. 50 msec max. 20 msec
Waveform Duration Of A/B Seconds
A = Rise Time = T1-T0 (1.25(b-a) B = Duration = T2-T0
500mA
max. 60 sec max. 2 min max. 100msec max. 30 msec max. 20 msec
Electrical Characteristics
Testing current 100% 200% 500% 1000%
(UL STD. 248-14)
0.5 lp
Blow Time Minimum Maximum 4 hrs. N/A 3 sec 60 sec 100 msec 1.5 sec 30 msec 300 msec
0.1 lp
a TO
b T1
Time T2
Thermal Shock MIL-STD-202, Method 107, Test Condition B (-65C to +125C) Operating Temperature -55C to +125C
Approvals
Safety Agency Approvals Interrupting Rating 60A@ 600V AC 100A@ 125V DC Power Factor Resistive Resistive
rc
Intended Application Telecom Protection General Purpose
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" Interrupting Rating plus "c" Packaging 2,000 fuses in 13 inches dia. reel, 16 mm wide tape, 8 mm pitch, per EIA standard 481
r Recognized File no.
E20624
Environmental Specification
Soldering Techniques & Compatability Reflow: Industrial standard, 240C peak 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 (235C, 30 sec)
Mechanical Dimensions
3 . 0 5 0 . 1 3 m m (0.120"0.005") 3.050.13mm (0.120"0.005") 2.030.10mm (0.080"0.004")
bel 1.25
9.650.25mm (0.38"0.01")
SMP
3.81mm (0.15")
4.06mm (0.16")
Recommended pad layout
5.08mm (0.20")
ORDERING INFORMATION SEE PAGES 67 & 68
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel: 201-432-0463 * Fax: 201-432-9542 * E-Mail: belfuse@belfuse.com
Website: www.belfuse.com
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Specifications subject to change without notice
Type SMP
Surface Mount Power Cross Protection Fuse
SMPC0901
SMP - TIME CURRENT CHARACTERISTIC CURVE
- 500mA
10000 1000 10
TIME IN SECONDS
100
10
1
- 1.25A
0.1
0.01 0.01
0.1
1
10
100
1000
CURRENT IN AMPERES NOTE - see important information under "User Guide"on P.08
Corporate Office Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302 Tel: 201-432-0463 Fax: 201-432-9542 E-Mail: belfuse@belfuse.com Website: www.belfuse.com
Far East Office Bel Fuse Ltd.
8F/8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel: 852-2328-5515 Fax: 852-2352-3706
European Office Bel Fuse Europe Ltd.
Preston Technology Management Centre Marsh Lane, Preston PR1 8UD Lancashire, U.K Tel: 44-1772-556601 Fax: 44-1772-888366
Specifications subject to change without notice
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