Description
• Axial Leaded
• Fast Acting, Solid Matrix Construction
• High Temperature Thermoplastic Body, UL 94 VO
• Tin-lead plated copper Lead Wires, .025" diameter
Agency Information
• UL Recognition Guide & File Numbers:
JDYX2 & E19180
• CSA Certification File & Class Numbers: 053787 C 00 &
1422 30 (0 - 1/8A); 053787 C 00 & 1422 01 (1/4A - 8A)
Ordering
• Specify product code and packaging code
Environmental Data
• Life Test: 2000 hours at 80% rated current, 55°C
• Moisture Resistance: MIL-STD-202, Method 106, 90%
relative humidity at 65°C.
• Operating Temperature: -55°C to 125°C with proper fuse
derating
• Resistance to Soldering Heat: MIL-STD-202, Method
210, Test Condition C (260°C)
• Salt Spray: MIL-STD-202, Method 101, Test Condition B
• Shock: MIL-STD-202, Method 213, Test Condition I,
100G’s for 6 milliseconds
• Solderability: MIL-STD-202, Method 208
• Terminal Strength: MIL-STD-202, Method 211, Test
Condition A, will withstand 7 lb. axial pull test.
• Thermal Shock: MIL-STD-202, Method 107, Test
Condition B, -65°C to 125°C
• Thermal Cycle: EIA-STD-RS-186-C, Test Condition A,
-55°C to 85°C
• Vibration: MIL-STD-202, Method 204, Test Condition C,
(55 to 2000 HZ, 10G’s peak)
• Wave Soldering: Maximum reservoir temperature
260°C, 10 second maximum exposure, .125" from body.
1.13"
28.58mm
.297"
7.54mm
.12"
3.10mm
.025"
0.64mm
1.13"
28.58mm
*All tolerances: ±0.13mm
±0.005"
Dimensions mm⁄(inches)
Subminiature Through Hole
MCR Series, Fast Acting, Solid Matrix
ELECTRICAL CHARACTERISTICS
% of Amp Rating (0-10A) Opening Time
100% 4 hours minimum
250% 5 seconds maximum
SPECIFICATIONS
Rated Interrupting Pre-arching2Typical Total Clearing2Typical Voltage
Product Voltage Rating1I2t (A2sec) I2t (A2sec) Drop Volts at
Code AC DC AC DC AC DC AC DC 100% Rated
MCR-1/16 125V 125V 50A 300A 1.1 x 10-6 1.0 x 10-7 1.8 x 10-6 1.5 x 10-7 2.33
MCR-1/8 125V 125V 50A 300A 4.3 x 10-6 7.1 x 10-7 7.3 x 10-6 8.7 x 10-7 1.52
MCR-1/4 125V 125V 50A 300A 8.0 x 10-5 1.0 x 10-6 1.2 x 10-4 1.3 x 10-6 .76
MCR-3/8 125V 125V 50A 300A 9.7 x 10-5 6.7 x 10-6 1.1 x 10-4 8.3 x 10-6 .73
MCR-1/2 125V 125V 50A 300A 7.4 x 10-4 5.4 x 10-5 6.2 x 10-3 6.8 x 10-5 .65
MCR-3/4 125V 125V 50A 300A 1.3 x 10-3 7.4 x 10-5 7.5 x 10-2 9.2 x 10-5 .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. I2t 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.
OBSOLETE - Recommended replacement with MCRW, Data Sheet 4074 - OBSOLETE
0210 BU-SB10142 Page 1 of 2 Data Sheet 2003