OBSOLETE - Recommended replacement with MCRW, Data Sheet 4074 - OBSOLETE Subminiature Through Hole MCR Series, Fast Acting, Solid Matrix Description Axial Leaded Fast Acting, Solid Matrix Construction High Temperature Thermoplastic Body, UL 94 VO Tin-lead plated copper Lead Wires, .025 diameter ELECTRICAL CHARACTERISTICS % of Amp Rating (0-10A) Opening Time 100% 4 hours minimum 250% 5 seconds maximum Agency Information Terminal Strength: MIL-STD-202, Method 211, Test UL Recognition Guide & File Numbers: Condition A, will withstand 7 lb. axial pull test. JDYX2 & E19180 Thermal Shock: MIL-STD-202, Method 107, Test CSA Certification File & Class Numbers: 053787 C 00 & Condition B, -65C to 125C 1422 30 (0 - 1/8A) 053787 C 00 & 1422 01 (1/4A - 8A) Thermal Cycle: EIA-STD-RS-186-C, Test Condition A, Ordering -55C to 85C Vibration: MIL-STD-202, Method 204, Test Condition C, Specify product code and packaging code (55 to 2000 HZ, 10Gs peak) Environmental Data Wave Soldering: Maximum reservoir temperature Life Test: 2000 hours at 80% rated current, 55C 260C, 10 second maximum exposure, .125 from body. Moisture Resistance: MIL-STD-202, Method 106, 90% mm relative humidity at 65C. Dimensions (inches) 0.005 Operating Temperature: -55C to 125C with proper fuse *All tolerances: 0.13mm derating 1.13 1.13 Resistance to Soldering Heat: MIL-STD-202, Method 28.58mm 28.58mm 210, Test Condition C (260C) .297 .12 Salt Spray: MIL-STD-202, Method 101, Test Condition B 7.54mm 3.10mm Shock: MIL-STD-202, Method 213, Test Condition I, 100Gs for 6 milliseconds .025 Solderability: MIL-STD-202, Method 208 0.64mm SPECIFICATIONS 2 2 Rated Interrupting Pre-arching Typical Total Clearing Typical Voltage 1 2 2 2 2 Product Voltage Rating I t (A sec) I t (A sec) Drop Volts at Code AC DC AC DC AC DC AC DC 100% Rated -6 -7 -6 -7 MCR-1/16 125V 125V 50A 300A 1.1 x 10 1.0 x 10 1.8 x 10 1.5 x 10 2.33 -6 -7 -6 -7 MCR-1/8 125V 125V 50A 300A 4.3 x 10 7.1 x 10 7.3 x 10 8.7 x 10 1.52 -5 -6 -4 -6 MCR-1/4 125V 125V 50A 300A 8.0 x 10 1.0 x 10 1.2 x 10 1.3 x 10 .76 -5 -6 -4 -6 MCR-3/8 125V 125V 50A 300A 9.7 x 10 6.7 x 10 1.1 x 10 8.3 x 10 .73 -4 -5 -3 -5 MCR-1/2 125V 125V 50A 300A 7.4 x 10 5.4 x 10 6.2 x 10 6.8 x 10 .65 -3 -5 -2 -5 MCR-3/4 125V 125V 50A 300A 1.3 x 10 7.4 x 10 7.5 x 10 9.2 x 10 .55 MCR-1 125V 125V 50A 300A .01 .01 .02 .01 .24 MCR-1 1/2 125V 125V 50A 300A .03 .02 .04 .03 .20 MCR-2 125V 125V 50A 300A .09 .07 .11 .08 .16 MCR-2 1/2 125V 125V 50A 300A .19 .14 .25 .17 .15 MCR-3 125V 125V 50A 300A .35 .28 .45 .32 .15 MCR-3 1/2 125V 125V 50A 300A .56 .37 .83 .43 .14 MCR-4 125V 125V 50A 300A .96 .67 1.37 .77 .13 MCR-5 125V 125V 50A 300A 1.82 1.34 2.53 1.51 .11 MCR-7 60V 90V 50A 300A 1.48 .49 2.02 .58 .10 MCR-10 60V 90V 50A 300A 3.62 1.16 4.41 1.38 .08 1. Interrupting ratings were measured at 100% (1/16 to 5) and 100% (7, 10) power factors on AC, and a time constant less than 1 ms. on DC. 2 2. I t was measured at 50 amps 125 VAC, .95PF, (random closing angle) and 300 amps 125 VDC, TC <1ms. for 1/16 through 5 amps and 50 amps 60 VAC, .95PF, (random closing angle), and 300 amps 90 VDC, TC <1ms. for the 7 and 10 amp fuses. NOTE: All values shown above are typical. Device designed to carry rated current for four hours minimum. An operating current of 80% or less of rated current is recommended, with further derating required at elevated ambient temperatures. 0210 BU-SB10142 Page 1 of 2 Data Sheet 2003