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| Bussmann(R) Microtron(R) Printed Circuit Board Fuses .122 .297 (3.10mm 7.54mm) MCR R Time-Current Characteristic Curves-Average Melt (Full Size Curves Available) AMPERE RATING 1/4 3/8 1/2 3/4 1.0 1.5 2.0 2.5 3.0 4.0 5.0 7.0 10.0 Actual Size Product Name: MCR (Microtron(R)) Characteristics: Fast Acting, Current Limiting Construction: Solid Matrix Packaging & Ordering Information: Dimensional Data 1.13" 28.58mm .12" 3.10mm .025" 0.64mm MCR Product Rated Current Symbol (See Table) *All tolerances: 0.005" 0.13mm 10 1 TIME IN SECONDS 1.13" 28.58mm .297" 7.54mm .1 .01 Weight = 2.45 lbs/2500 CURRENT IN AMPERES Time-Current Characteristics: Rated Current 0-10A 100% 4 hrs. (min) Percent of Rating 250% 5 sec. (max) CE logo denotes compliance with European Union Low Voltage Directive (50-1000 VAC, 75-1500 VDC). Refer to BIF document #8002 or contact Bussmann Application Engineering at 314-527-1270 for more information. Electrical Characteristics Rated Voltage AC (Max.) DC (Max.) Interrupting Rating1 AC DC Pre-arcing2 I2t (A2sec) AC DC Typical Total Clearing2 I2t (A2sec) AC DC Typical Voltage Drop Volts at 100% Rated Current Agency* Approvals CSA JIS UR Current Rating * * TM 1 1TM 2 2TM 3 3TM 4 5 7 10 *Approvals: 125V 125V 50A 300A 1.1 10-6 1.0 10-7 1.8 10-6 1.5 10-7 2.33 ** 125V 125V 50A 300A 4.3 10-6 7.1 10-7 7.3 10-6 8.7 10-7 1.52 ** 125V 125V 50A 300A 8.0 10-5 1.0 10-6 1.2 10-4 1.3 10-6 .76 ** 125V 125V 50A 300A 9.7 10-5 6.7 10-6 1.1 10-4 8.3 10-6 .73 ** -4 -5 -3 -5 125V 125V 50A 300A 7.4 10 5.4 10 6.2 10 6.8 10 .65 ** 125V 125V 50A 300A 1.3 10-3 7.4 10-5 7.5 10-2 9.2 10-5 .55 ** 125V 125V 50A 300A .01 .01 .02 .01 .24 *** 125V 125V 50A 300A .03 .02 .04 .03 .20 *** 125V 125V 50A 300A .09 .07 .11 .08 .16 *** 125V 125V 50A 300A .19 .14 .25 .17 .15 *** 125V 125V 50A 300A .35 .28 .45 .32 .15 *** 125V 125V 50A 300A .56 .37 .83 .43 .14 *** 125V 125V 50A 300A .96 .67 1.37 .77 .13 *** 125V 125V 50A 300A 1.82 1.34 2.53 1.51 .11 *** 60V 90V 50A 300A 1.48 .49 2.02 .58 .10 ** 60V 90V 50A 300A 3.62 1.16 4.41 1.38 .08 ** UL Recognition STD 248-14, Guide JDYX2, File E19180; CSA Certification, Class 1422-01, File 53787. JIS (Japanese Industrial Standard) Reg. No. 2221, Authorization No. 32-1516. 1. Interrupting ratings were measured at 100% ( to 5) and 100% (7, 10) power factors on AC, and a time constant less than 1ms. on D.C. 2. I2t was measured at 50 amps 125 VAC, .95PF, (random closing angle) and 300 amps 125 VDC, TC <1ms. for 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. 100 Form No. MCR Page 1 of 2 BIF Doc #2003 .01 12-21-98 SB98107 Rev. A 10 Package Code Blank10 in BK 500 in TR/ Tape/Reel 2500 units, 52.4mm spacing TR1/ Tape/Reel 5000 units, 52.4mm spacing TR6/ Tape/Reel 1000 units, 52.4mm spacing Radial leaded versions available (.4, .6 spacing) .001 .1 1 1/16 1/8 Bussmann(R) Microtron(R) Printed Circuit Board Fuses .122 .297 (3.10mm 7.54mm) MCR R Typical Voltage Drop (At 25 C Ambient Temperature) 0.25 0.2 Voltage Drop 0.15 0.1 0.05 MCR-1 MCR-1TM MCR-2 MCR-2TM MCR-3 MCR-3TM MCR-5 MCR-10 MCR-4 MCR-7 0 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Percent of Rated Curent 2 MCR- 1.8 1.6 1.4 1.2 MCR- 1 MCR-* 0.8 MCR-* MCR-TM 0.6 MCR- 0.4 0.2 0 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Percent of Rated Current Microtron fuses are designed to meet the following specifications: Body High temperature thermoplastic, flammability rating UL 94 VO. Resistance to Soldering Heat Salt Spray Shock Solderability Terminal Strength MIL-STD-202, Method 210, Test Condition C (260C). MIL-STD-202, Method 101, Test Condition B. MIL-STD-202, Method 213, Test Condition I, 100G's for 6 milliseconds. MIL-STD-202, Method 208. MIL-STD-202, Method 211, Test Condition A, will withstand 7 lb. axial pull test. MIL-STD-202, Method 107, Test Condition B, -65C to 125C. EIA-STD-RS-186-C, Test Condition A, -55C to 85C. MIL-STD-202, Method 204, Test Condition C, (55 to 2000 HZ, 10G's peak). Maximum reservoir temperature 260C, 10 second maximum exposure, .125" from body. Electrical Characteristics Carry 100% rated current for 4 hours minimum. Open at 250% of rated current in 5 seconds maximum. Element Leads Lead Bend Test Solid Matrix, gold or silver element encapsulated in ceramic. Tin-plated copper, .64mm (.025) diameter. With a two pound weight attached, 90 one direction, back to original position, then 90 opposite direction; fuse will withstand two cycles. 2000 hours at 80% rated current, 55C. MIL-STD-202, Method 106, 90% relative humidity at 65C. -55C to 125C with proper fuse derating. EIA-STD-296-E. Thermal Shock Thermal Cycle Vibration Life Test Moisture Resistance Operating Temperature Packaging Wave Soldering The only controlled copy of this BIF document is the electronic read-only version located on the Bussmann Network Drive. All other copies of this document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Bussmann also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications. Voltage Drop 12-21-98 SB98107 Rev. A Form No. MCR Page 2 of 2 BIF Doc #2003 |
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