Raychem FT600 Series Overcurrent Fuse
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
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
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
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.
*I2t is calculated at 10 ms or less.
Part Ampere Rating Voltage Rating Typical Resistance Typical I2t
Number (A) (V) (Ω)(A
2s)*
FT600-0500 0.50 250 0.5 1
FT600-1250 1.25 250 0.1 16
FT600-2000 2.00 250 0.05 18
Interrupt Voltage and Current Ratings
Note: FT600-1250 and FT600-2000 are designed to assist equipment in complying with Telcordia GR-1089 specifications. In-circuit testing is strongly recommended.
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.
GR-1089 GR-1089 UL60950 GR-1089/UL60950 GR-1089/UL60950 GR-1089 UL60950
1000Vac, 5A, 0.5sec 600Vac, 60A, 5sec 600Vac, 40A, 1.5sec 600Vac, 7A, 5sec 600Vac, 2.2A, 30min 277Vac, 25A, 15min 120Vac, 25A, 30min
FT600-0500 ✓✓✓✓✓
FT600-1250 ✓✓✓✓✓✓✓
FT600-2000 ✓✓✓✓✓✓✓
Telcordia First Level First Level First Level First Level First Level Second Level
GR-1089 Test 1 Test 2 Test 3 Test 4 Test 5 Test 1
Surge Voltage (Vpk) 600 1000 1000 2500 1000 5000
Wave Form (µs) 10x1000 10x360 10x1000 2x10 10x360 2x10
Surge Current (A) 100 100 100 500 25 500
Repetitions (each polarity) 25 25 25 10 5 1
FT600-0500
FT600-1250 ✓✓✓✓✓✓
FT600-2000 ✓✓✓✓✓✓
FCC Type A Type A Type B Type B
Part 68 Metallic Longitudinal Metallic Longitudinal
Surge Voltage (Vpk) 800 1500 1000 1500
Short Circuit Wave Form (µs) 10x560 10x160 5x320 5x320
Surge Current (A) 100 200 25 37.5
Repetitions (each polarity) 11 11
FT600-0500 Fuse open Fuse open ✓✓
FT600-1250 ✓✓ ✓✓
FT600-2000 ✓✓ ✓✓
Product Dimensions
B
AC
Details
Termination material Silver-plated brass
Body material Ceramic
Termination solderability Per IEC-60127-4
Solder heat withstand Per MIL-STD-202, Method 210, Test Condition J
Solvent resistance Per MIL-STD-202F, Method 215J
Storage temperature -40/+85°C
Storage humidity Per MIL-STD-202F, Method 106F
Power Cross
Lightning Surge
A (Max.)
10.5 (0.413)
B (Max.)
3.4 (0.133)
C (Max.)
3.4 (0.133)
Dimensions in millimeters (inches)
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.
©2002 Tyco Electronics Corporation. Printed in USA. RCP0049.1102.1000
70
80
90
100
110
120
130
-70 -50 -30 -10 10 30 50 70 90 110 130
AMBIENT TEMPERATURE
(
°C
)
PERCENT OF CURRENT RATING
FT600 Series Fuses
Thermal Derating CurveTypical Time-to-Open Characteristics (at 25˚ C)
Solder Reflow Recommendations
Preheating
50
100
150
200
250
300
0
10 to 20
Temperature (°C)
Soldering Cooling
120
30 to 90
Time(s)
Solder Reflow
•Recommended reflow methods: IR, vapor phase oven, hot air oven.
•Devices can be cleaned using standard industry methods and
solvents.
Recommended Pad Layout
The dimensions in the table below provide the recommended pad layout for each FT600 device.
Ordering Information
Part numbers FT600-0500-2
FT600-1250-2
FT600-2000-2
Devices per reel 2,500/reel
Standard package 10,000/box
Note: The -2 designates tape and reel, the package
style for this product.
Agency Recognitions
UL File # E197536
CSA Pending
Time(s)
Te m perature (°C)
Worldwide Headquarters
308 Constitution Drive, MS R21/2A
Menlo Park, CA USA 94025-1164
Tel (800) 227-7040
(650) 361-6900
Fax (650) 361-2508
Europe
Tel 32/16351714
Fax 32/16351727
www.tycopowercomponents.com
www.circuitprotection.com.hk (Chinese)
www.raychem.com/go/jpn/polyswitch (Japanese)
Japan
Tel81-44-900-5110
Fax81-44-900-5140
Asia Pacific
Tel 852-2738-3401
Fax 852-2735-1185
A
12.6 (0.496)
B
4.0 (0.157)
C
3.7 (0.145)
D
5.2 (0.204)
Dimensions in millimeters (inches)
A
DC
B
