HALOGEN HF FREE Subminiature Microtron Fuses ® MCRS Series, Time-Delay, Wire-in-Air Description • Axial-leaded time-delay thru-hole fuse • Matte tin-plated copper lead wires • High temperature epoxy plastic body, UL 94V0 Electrical Characteristics % of Amp Rating Opening Time 100% 4 hours minimum 200% 30 seconds maximum Agency Information • UL Recognition Guide & File numbers: JDYX2 & E195337. • CSA Certification Record No: LR 701159 & Class No: 1422 30 and 1422 01. Dimensions - mm (in) 7.1 ± 0.5 (0.280 ± 0.020) "A" 3.18 ± 0.1__ _ (0.125 ± 0.004) Environmental Data • Shock resistance: MIL-STD-202, Method 213B, Test Condition I (Sawtooth) • Vibration resistance: MIL-STD-202, Method 201 (10-55Hz x 3 axis/ no load) • Moisture resistance: MIL-STD-202F, Method 106 • Soldering heat resistance: MIL-STD-202, Method 210 Top side (260ºC, 20 sec) • Salt spray: MIL-STD-202, Method 101, Test Condition B (48 Hours) • Solderability MIL-STD-202, Method 208H • Operating Temperating: -55ºC to 125ºC Packaging Code BK1 TR1 End View 0.81 dia. (0.032) “A” Length 1.5" 1.13" 3.18 ± 0.1 diameter (0.125 ± 0.004) 0.81 diameter (0.032) Construction Ordering Specify packaging • Insert packaging code prefix before part number. E.g., TR1 (or BK1)/MCRS5A Specifications Part Number MCRS250mA MCRS300mA MCRS375mA MCRS500mA MCRS750mA MCRS1A MCRS1.25A MCRS1.5A MCRS2A MCRS2.5A MCRS3A MCRS4A MCRS5A MCRS7A Voltage Rating Vac/dc 125 125 125 125 125 125 125 125 125 125 125 125 125 125 Interrupting Rating* (amps) Vac Vdc 50 300 50 300 50 300 50 300 50 300 50 300 50 300 50 300 50 300 50 300 50 300 50 300 50 300 50 300 Resistance Ω)** (Ω Typical 3.20 2.57 1.66 1.07 0.55 0.36 0.23 0.18 0.12 0.08 0.06 0.04 0.02 0.01 Typical Melt I2t† 0.042 0.056 0.101 0.18 0.44 0.78 1.41 1.9 3.4 6.1 8.1 15 35 63 * AC Interrupting Rating (Measured at designated voltage, 100%) DC Interrupting Rating (Measured at designated voltage, rise time of less than 50 microseconds, battery source) ** DC Cold Resistance (Measured at 10% of rated current) † Typical Melting I2t (Measured with a battery bank at rated DC voltage, 10x-rated current, rise time of calibrated circuit less than 50 microseconds) ‡ Typical Voltage Drop (Measured at rated current after temperature stabilizes) 0709 BU-SB09025 Page 1 of 2 Data Sheet 4075 Typical Voltage Drop‡ 2.20 2.02 1.69 1.42 1.09 0.91 0.77 0.7 0.59 0.5 0.45 0.38 0.29 0.25 Time in Seconds Time-Current Curve Current in Amps Packaging Code Packaging Code Prefix BK1 TR1 Description 1,000 fuses in bulk 2,500 fuses on tape-and-reel per EIA-296-F @ 5 mm pitch and 52.4mm inside tape spacing The only controlled copy of this Data Sheet is the electronic read-only version located on the Cooper 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. Cooper Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper 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. Life Support Policy: Cooper Bussmann does not authorize the use of any of its products for use in life support devices or systems without the express written approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. © 2009 Cooper Bussmann St. Louis, MO 63178 www.cooperbussmann.com 0709 BU-SB09025 Page 2 of 2 Data Sheet 4075