TeleLink(R) SM Fuse Product Description The TeleLink(R) Surface Mount (SM) surge resistant time lag fuse has been designed to offer the ultimate in circuit protection while meeting the necessary surge requirements of the telecommunications industry. When used in conjunction with the SIDACtor(R) Transient Voltage Suppressor (TVS), the TeleLink SM fuse (F0500T 500mA and F1250T 1.25A) and the SIDACtor TVS provide a complete regulatory compliant solution for standards such as GR 1089, FCC Part 68, UL 1950, and ITU K.20 & K.21. Features * Surface Mount Technology * 100A, 10x1000s & 500A, 2x10s surge current ratings * Eliminates the need for costly power resistors and PTC's * Designed specifically for telecommunications equipment TeleLink(R) SM Fuse CSA Approved File No. LR702828 UL Recognized E-191008 Patent Pending TeleLink SM Fuse Advantages TeleLink(R) SM Fuse TeleLink SM Fuse Advantages * The elimination of series line resistance enabling longer loop lengths * Precise longitudinal balance allowing better transmission quality * Robust surge performance which elimates costly down time due to nuisance blows * Greater surge ratings than resettable devices ensuring regulatory compliance * Non-degenerative performance * Available in surface mount packaging which utilizes less PCB real estate, eliminates mixed technologies, and reduces manufacturing costs Selection Criteria For circuits that do not require additional series resistance, the surge current rating (IPP) of the TeleLink SM Fuse should be greater than or equal to the surge currents associated with the lightning immunity tests of the applicable regulatory requirement (IPK). IPP IPK For circuits that utilize additional series resistance, the surge current rating (IPP) of the TeleLink SM Fuse should be greater than or equal to the available surge currents associated with the lightning immunity tests of the applicable regulatory requirement (IPK (available)). IPP IPK (available) The maximum available surge current is calculated by dividing the peak surge voltage (VPK) by the total circuit resistance (RTOTAL). IPP IPK (available) = VPK/RTOTAL For longitudinal surges (TIP-GND, RING-GND), RTOTAL is calculated for both TIP and RING. RTOTAL = RTIP + RSOURCE RTOTAL = RRING + RSOURCE For metallic surges (TIP-RING): RTOTAL = RTIP + RRING + RSOURCE To select the most appropriate TeleLink SM Fuse / SIDACtor TVS combination, simply decide what regulatory requirement your equipment will need to meet and refer to the following table. For applications that do not require agency approval or multiple listings, please contact Teccor Electronics. TeleLink SM Fuse SIDACtor TVS GR 1089 F1250T C Series FCC Part 68, Type A F1250T B Series FCC Part 68, Type B F0500T A Series ITU K.20 F1250T A Series ITU K.21 Basic/Enhanced F1250T A Series UL 1950 All All UL 1950 All All Regulatory Requirement http://www.teccor.com Page: 2 Teccor Electronics 972-580-7777 TeleLink(R) SM Fuse Selection Criteria Surge Current Ratings TeleLink SM Fuse 2x10s 10X160s 10X560s 10X1000s F0500T F1250T not rated 500A 75A 160A 45A 115A 35A 100A TeleLink SM Fuse Voltage Rating Current Rating F0500T F1250T 250V 250V 500mA 1.25A I2t Measured Interrupting Rating @ DC Rated Voltage 1.3A2s 22.2A2s 600V, 40A 600V, 60A* Min. Typ. Max. 1 sec 1 sec 2 sec 2 sec 60 sec 60 sec Notes: * The TeleLink SM Fuse is designed to carry 100% of its' rated current for four hours and 250% of its' rated current for one second minimum and 120 seconds maximum. Typical time is 4 to 10 seconds. For optimal performance, an operating current of 80% or less is recommended. * I2 t is a non-repetitive RMS surge current rating for a period of 16.7 msec. * *Interrupt test characterized at 50 to 70 phase angle. Phase angles approximating 90 may result in damage to the body of the fuse. Resistance Ratings DC Cold Resistance TeleLink SM Fuse Typical Voltage Drop @ Rated Current Min. Max. F0500T F1250T .471V .205V .420 .107 .640 .150 Notes: * Typical inductance 4H up to 500MHz. * Resistance changes .5% for every C. * Measured at 10% rated current. Design Considerations The PCB traces must be designed such that its I2t rating exceeds the I2t of the TeleLink fuse. A 1oz. .025" width is recommended, but reference to the IPC D 275 standard may provide more precise details. For UL1950 compliance, design considerations must be given to the test conditions of Annex NAC. In particular, test 3 and 3A are intended to produce the maximum heating effects. Therefore, PCB layout design should compensate appropriately. Teccor Electronics 972-580-7777 http://www.teccor.com Page: 3 TeleLink(R) SM Fuse Interrupting Values Qualification Data TeleLink(R) SM Fuse Qualification Data The F1250T has been designed to meet the following test conditions per GR 1089 without any additional series resistance, however in-circuit test verification is required. Please note that considerable heating may occur during Test 4 of the Second Level AC Power Fault Test. First Level Lightning Surge Test Test Surge Voltage Wave-form Surge Current Repetitions Each Polarity 1 2 3 4 5 600V 1000V 1000V 2500V 1000V 10x1000s 10x360s 10x1000s 2x10s 10x360s 100A 100A 100A 500A 25A 25 25 25 10 5 Second Level Lightning Surge Test Test Surge Voltage Wave-form Surge Current Repetitions Each Polarity 1 5000V 2x10s 500A 1 First Level AC Power Fault Test Test http://www.teccor.com Page: 4 Applied Voltage, 60Hz Short Circuit Current Duration 1 50VRMS .33A 15 minutes 2 100VRMS .17A 15 minutes 3 200VRMS, 400VRMS, 600VRMS 1A at 600V 60 Applications, 1 second each 4 1000VRMS 1A 5 Diagram Diagram 6 600VRMS 0.5A 60 Applications, 1 second each 60 Applications, 5 seconds each 30 seconds each 7 600VRMS 2.2A 2 seconds each 8 600VRMS 3A 1 second each 9 1000VRMS 5A 0.5 second each Teccor Electronics 972-580-7777 TeleLink(R) SM Fuse Qualification Data Second Level AC Power Fault Test for Non-Customer Premises Equipment Test Applied Voltage, 60Hz Short Circuit Current Duration 1 120VRMS, 277VRMS 30A 30 minutes 2 600VRMS 60A 5 seconds 3 600VRMS 7A 5 seconds 4 100VRMS - 600VRMS 2.2A at 600V 30 minutes * Power fault tests equal or exceed the requirements of UL1950 3rd edition. * Test 4 is intended to produce a maximum heating effect. Temperature readings can exceed 150C. * Test 2 may be dependent on the closing angle of the voltage source. Fuse is characterized at 50 to 70. Closing angles approximating 90 may result in damage to the body of the fuse. * Caution should be used when routing internal traces adjacent to the F1250T. Teccor Electronics 972-580-7777 http://www.teccor.com Page: 5 TeleLink(R) SM Fuse Notes: Time Current Curve TeleLink(R) SM Fuse Time Current Curve 1000 800 700 600 800 700 600 500 500 400 300 300 200 200 F1250T F0500T 400 100 90 80 70 100 90 80 70 60 60 50 50 40 40 30 30 20 20 10 9 8 7 10 9 8 7 6 6 5 5 4 4 3 3 2 2 1 .9 .8 .7 .6 1 .9 .8 .7 .6 .5 .5 .4 .4 .3 .3 .2 .2 .1 .09 .08 .07 .1 .09 .08 .07 .06 .06 http://www.teccor.com Page: 6 600 700 800 900 1000 500 400 300 200 70 80 90 100 60 50 40 30 20 6 7 8 9 10 5 3 .01 4 .01 2 .02 .7 .8 .9 1 .02 .6 .03 .5 .03 .4 .04 .3 .05 .04 .2 .05 .1 Time in seconds 1000 600 700 800 900 1000 400 500 300 200 70 80 90 100 60 50 30 40 20 6 7 8 9 10 5 4 3 2 .7 .8 .9 1 .5 .6 .4 .3 .2 .1 Current in Amperes Teccor Electronics 972-580-7777 TeleLink(R) SM Fuse SM Mechanical Data SM Mechanical Data Construction 3 4 5 6 TeleLink(R) SM Fuse 1 2 1. End plate 2. High temperature solder preform 3. Metallization of ceramic body 4. Ceramic body 5. Fuse element 6. End termination overcoat on both ends (Nickel flash, Tin/Lead overcoat) Dimensions End View in mm (inches) 2.77 0.15 (0.109 0.006) 2.77 0.15 (0.109 0.006) Top View in mm (inches) 1.40 0.25 (0.055 0.010) 1.40 0.25 (0.055 0.010) 2.77 0.15 (0.109 0.006) 10.29 0.20 (0.405 0.008) Teccor Electronics 972-580-7777 http://www.teccor.com Page: 7 SM Mechanical Data TeleLink(R) SM Fuse Dimensions Side View mm (inches) 1.40 0.25 (0.055 0.010) 1.40 0.25 (0.055 0.010) 2.77 0.15 (0.109 0.006) 10.29 0.20 (0.405 0.008) Footprint mm(inches) 5.2 3.7 (0.204) (0.145) 4.0 (0.157) 12.6 (0.496) Soldering Recommendations Wave Soldering: Reservoir Temperature: 260C (500 F) Time in Reservoir: 3 seconds maximum Infrared: Temperature: 240C (464F) Time: 30 seconds maximum Hand Soldering: Hand soldering is not recommended for this fuse because excessive heat can affect the fuse performance. Hand soldering should be used only for rework and low volume samples. Maximum tip temperature: 240C (464F) Minimize the soldering time at temperature to achieve the solder joint. Measure the fuse resistance before and after soldering. Any fuse that shifts more than 3% should be replaced. An increase in resistance above this amount increases the possibility of a surge failure and a decrease in resistance may cause low overloads to exceed the maximum opening times. Inspect the solder joint to ensure an adequate solder fillet has been produced without any cracks or visible defects. http://www.teccor.com Page: 8 Teccor Electronics 972-580-7777 TeleLink(R) SM Fuse Temperature Derating Curve Temperature Derating Curve Operating Temperature: -55C to +125C with proper correction factor applied 150 140 130 120 110 100 90 80 70 60 50 40 30 Effect on Current Rating -55 -60 -40 -20 0 20 40 60 80 100 TeleLink(R) SM Fuse Percent of Rating Chart of correction factor 125 Ambient C Maximum Temperature Rise Fuse F0500T F1250T Temperature Reading 75C* (167F) 75C* (167F) Notes: * Measured at rated current after temperature stabilizes. * *Higher currents and PCB layout designs can effect this parameter. * The F1250T meets the requirements of UL 248-14. However, board layout, board trace widths, and ambient temperature values can cause higher than expected rises in temperature. During UL testing, the typical recorded heat rise for the F1250T at 2.2A was 120C. Teccor Electronics 972-580-7777 http://www.teccor.com Page: 9 Packaging TeleLink(R) SM Fuse Packaging Carrier Tape 3.15.10 .436.004 1.75.10 .124.004 4.00.10 .157.004 2.00.10 .079.004 'A' 1.50.10 Dia. .059.004 11.50.10 .453.004 'B' 'B' 11.07.10 .436.004 +.30 24.00 -.10 .945 +.012 -.004 4 Max. .343.013 .0135.0005 8.00.10 .315.004 3.28.10 .129.004 'A' 1.50.25 Dia. .059.010 Section 'A'-'A' 8 Max. Material * 24mm black anti-static tape Package Symbolization Marking F0500T FU FT JU JT F F http://www.teccor.com Page: 10 F1250T Manufactured in USA Manufactured in Taiwan U T J J U T Teccor Electronics 972-580-7777 TeleLink(R) SM Fuse Packaging Packaging 13 Inch Reel (330mm) Access Hole greater than 40.00 at slot 1.575 location 30.40 1.19 (measured at hub) 2.00 min. .079 (Drive Spokes) 20.20 min. .795 60.001.00 2.362.039 hub dia. 13.00.20 .512.008 Arbor Hole Tape Slot Depth greater than 10.00 .394 +2.00 24.40 -.00 .960 +.079 -.00 (measured at hub) 330.00 12.992 max dia. Material * Injection molded, high impact anti-static, white plastic reel * Conforms to EIA-481-1 * Surface resistivity 1011 OHMS/Square * Per ASTM D-257 Packing Information Teccor Electronics 972-580-7777 Description Packing Quantity Suffix Embossed Carrier Reel Pack Bulk Pack 2500 1000 RP BP http://www.teccor.com Page: 11 TeleLink(R) SM Fuse 5.00.51 .197.020 (tape starter slot) 25.651.75 1.00.069 (measured at outer edge) TECCOR ELECTRONICS 1800 Hurd Drive Irving, Texas 75038-4385 United States of America Phone: +1 972-580-7777 Fax: +1 972-550-1309 http://www.teccor.com sidactor.techsales@teccor.com Teccor Electronics reserves the right to make changes at any time in order to improve designs and to supply the best products possible. The information in this datasheet has been carefully checked and is believed to be accurate and reliable. However, no liability of any type shall be incurred by Teccor for the use of the circuits or devices described herein. Furthermore, no license of any patent rights is implied or given to any purchaser. Please contact the factory for further information. Ref: TeleLink_1250T_011012 Teccor Electronics is the proprietor of the trademarks SIDACtor(R), Battrax(R), and TeleLink(R). Teccor Electronics SIDACtor(R) TVS product is covered by these and other U.S. Patents: 4,685,120 - 4,827,497 - 4,905,119 - 5,479,031 - 5,516,705 An Invensys company An Invensys company