Effective June 2017 Technical Data 10572 Supersedes February 2017 1025HC Fast-acting, high current, surface mount ceramic tube fuses HALOGEN Applications HF FREE Primary and secondary circuit protection: Server and desktop power supplies Gaming console systems Voltage Regulator Module (VRM) Storage system power Base station power supplies Basic power supplies LED and general lighting Test equipment Agency information cURus Recognition file number: E19180, Guide JDYX2/JDYX8 PSE: JET 7042-31007-1002 (20 A to 30 A) Product description Ordering Fast-acting high current fuse Use ordering number (see page 7 for details) Compact design utilizes less board space 20 A to 50 A current ratings Packaging suffixes Ceramic tube, silver plated brass end -TR (20 A to 30 A: 1500 parts per 13 diameter cap construction reel, tape width 24 mm) (40 A to 50 A: 1000 parts per 13 diameter Halogen free and RoHS compliant reel, tape width 24 mm)1025HC Technical Data 10572 Effective June 2017 Fast-acting, high current, surface mount ceramic tube fuses Electrical characteristics % of Amp Rating Opening Time 100 4 hours minimum 200 60 s maximum Product specifications Interrupting Interrupting Current Voltage Voltage rating at rated rating at rated Typical DC Typical 1 2 3 rating rating rating volt age voltage cold resistance melting 4 2 2 Part number (A) (V ) (V ) (A ) (A ) (mW ) I t (A s) Part marking cURus PSE AC DC AC DC 1025HC20-R 20 250 72 100 500 3.1 25 <PS> E JET x x BUSS 20A 1025HC25-R 25 250 72 100 500 2.6 50 <PS> E JET x x BUSS 25A 1025HC30-R 30 250 72 100 500 1.7 112 <PS> E JET x x BUSS 30A 1025HC40-R 40 250 72 300 500 1.3 400 BUSS 40A x 1025HC50-R 50 250 60 300 600 1.1 600 BUSS 50A x 1 DC interrupting rating measured at rated voltage, time constant of less than 1.0 microseconds, battery source 2 Typical DC cold resistance measured at <10% of rated current at an ambient temperature of 20 C (reference only) 3. Typical melting It value is measured at 10In rated current 4. Part number definition: 1025HCxx-R 1025HC= Product code and size xx= Ampere rating -R= Rohs compliant Dimensions (mm) Recommended pad layout (mm) 20 A to 30 A 40 A to 50 A Rating A B C 20 A to 30 A 10.0 0.50 3.15 0.15 1.70 0.15 Recommended trace thickness is 3 oz. Recommended min-trace width is 10 mm (20 A to 30 A) and 15 mm (40 A to 50 A) 40 A to 50 A 12.4 0.50 4.50 0.15 2.70 0.15 www.eaton.com/electronics 2