New surface-mount fuse products for overcurrent protection of communications equipment
Benefits:
• When combined with a SiBar™ overvolt-
age protection device, assists equipment
in meeting regulatory standards with no
additional series components
• Improved temperature rise performance
over other similar SMT fuse devices
under sneak current testing
• High density placement in multi-port
system designs
Features:
• The lightning robust surface-mount fuse
offers overcurrent protection from power
faults
• Designed to assist equipment in comply-
ing with telecom specifications including
UL60950, FCC Part 68, and Telcordia
GR-1089
• Small footprint and low resistance
• Low profile
Target Applications:
• xDSL and ADSL linecards and modems
• T1/E1 systems
• Twisted pair telecom ports requiring
Telcordia GR-1089, UL60950 and FCC
Part 68 compliance
Interrupt Voltage and Current Ratings
Part
Number
FT600-0500
FT600-1250
FT600-2000
Ampere Rating
(A)
0.50
1.25
2.00
Voltage Rating
(V)
250
250
250
Typical Resistance
(Ω)
0.5
0.1
0.05
Typical I
2
t
(A
2
s)*
1
16
18
The FTxxxx devices are designed to carry 100% of rated current for 4 hours minimum and 250% of rated current for 1 second minimum, 120 seconds maximum. Resistance measured at 10% of rated current.
*I
2
t is calculated at 10 ms or less.
Power Cross
GR-1089
1000Vac, 5A, 0.5sec
FT600-0500
FT600-1250
FT600-2000
✓
✓
GR-1089
600Vac, 60A, 5sec
✓
✓
UL60950
600Vac, 40A, 1.5sec
✓
✓
✓
GR-1089/UL60950
600Vac, 7A, 5sec
✓
✓
✓
GR-1089/UL60950
600Vac, 2.2A, 30min
✓
✓
✓
GR-1089
277Vac, 25A, 15min
✓
✓
✓
UL60950
120Vac, 25A, 30min
✓
✓
✓
Note: FT600-1250 and FT600-2000 are designed to assist equipment in complying with Telcordia GR-1089 specifications. In-circuit testing is strongly recommended.
Lightning Surge
Telcordia
GR-1089
Surge Voltage (Vpk)
Wave Form (µs)
Surge Current (A)
Repetitions (each polarity)
FT600-0500
FT600-1250
FT600-2000
FCC
Part 68
Surge Voltage (Vpk)
Short Circuit Wave Form (µs)
Surge Current (A)
Repetitions (each polarity)
FT600-0500
FT600-1250
FT600-2000
First Level
Test 1
600
10x1000
100
25
✓
✓
Type A
Metallic
800
10x560
100
1
Fuse open
✓
✓
First Level
Test 2
1000
10x360
100
25
✓
✓
First Level
Test 3
1000
10x1000
100
25
✓
✓
Type A
Longitudinal
1500
10x160
200
1
Fuse open
✓
✓
First Level
Test 4
2500
2x10
500
10
✓
✓
Type B
Metallic
1000
5x320
25
1
✓
✓
✓
First Level
Test 5
1000
10x360
25
5
✓
✓
Second Level
Test 1
5000
2x10
500
1
✓
✓
Type B
Longitudinal
1500
5x320
37.5
1
✓
✓
✓
The FT600-0500, FT600-1250 and FT600-2000 are designed to meet the FCC Part 68 lightning surge requirements. Note that Type A tests allow for an overcurrent protection component to fuse open during
the surge.
Product Dimensions
A
B
C
Dimensions in millimeters (inches)
A (Max.)
10.5 (0.413)
B (Max.)
3.4 (0.133)
C (Max.)
3.4 (0.133)
Termination material
Body material
Termination solderability
Solder heat withstand
Solvent resistance
Storage temperature
Storage humidity
Details
Silver-plated brass
Ceramic
Per IEC-60127-4
Per MIL-STD-202, Method 210, Test Condition J
Per MIL-STD-202F, Method 215J
-40/+85°C
Per MIL-STD-202F, Method 106F
FT600 Series Fuses
Typical Time-to-Open Characteristics (at 25˚ C)
Thermal Derating Curve
130
120
PERCENT OF CURRENT RATING
110
100
90
80
70
-70
-50
-30
-10
10
30
50
70
90
110
130
AMBIENT TEMPERATURE (°C)
Solder Reflow Recommendations
300
Preheating
Soldering
Cooling
250
Temperature (°C)
Temperature (°C)
200
Solder Reflow
• Recommended reflow methods: IR, vapor phase oven, hot air oven.
• Devices can be cleaned using standard industry methods and
solvents.
Ordering Information
Part numbers
FT600-0500-2
FT600-1250-2
FT600-2000-2
2,500/reel
10,000/box
150
Devices per reel
Standard package
100
Note: The -2 designates tape and reel, the package
style for this product.
50
0
30 to 90
10 to 20
Time(s)
Time(s)
120
Recommended Pad Layout
The dimensions in the table below provide the recommended pad layout for each FT600 device.
SiBar is a trademark of Tyco Electronics Corporation.
All information, including illustrations, is believed to be reliable. Users, however, should independently evaluate the suitability of each product for their application. Tyco
Electronics makes no warranties as to the accuracy or completeness of the information, and disclaims any liability regarding its use. Tyco Electronics’ only obligations are
those in the Company’s Standard Terms and Conditions of Sale for this product, and in no case will Tyco Electronics be liable for any incidental, indirect, or consequential
damages arising from the sale, resale, use, or misuse of the product. Specifications are subject to change without notice. In addition, Tyco Electronics reserves the right
to make changes-without notification to Buyer-to materials or processing that do not affect compliance with any applicable specification.
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