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| HIGH-SPEED, HIGH-CURRENT SURGE PROTECTORS PMT/UMT (275) Series DESCRIPTION CP Clare's PMT(275) and UMT(275) Series surge protectors (350-500V and 550-2500V respectively) provide a high level of protection from high-speed, high-current transient surges. These devices are constructed using a proprietary semiconductor junction process which results in nanosecond response times combined with peak current ratings in excess of 20kA. FEATURES s Fast impulse breakdown (125% of typical DC APPLICATIONS s s s s breakdown at 5kV/s) s Tight DC breakdown voltage tolerance (10%) s Low capacitance Test equipment Video displays Medical electronics Instrumentation circuits STANDARD VOLTAGES Series PMT(275) DC Breakdown Voltage (typ) 350 400 450 500 550 600 650 750 800 850 1.0 1.5 2.0 2.5 (See detailed specifications for more information.) Unit V V V V V V V V V V kV kV kV kV UMT(275) www.cpclare.com 549 HIGH-SPEED, HIGH-CURRENT SURGE PROTECTORS PMT/UMT (275) Series SPECIFICATIONS All characteristics at 25C PMT(275)350 CONDITIONS 100V/s 5kV/s 100V 1MHz 1kA (PW=20 s) SYMBOL VBD Vbd IR C MIN 315 1010 500 TYP 350 MAX 385 750 4 - PMT(275)400 MIN 360 1010 500 TYP 400 MAX 440 750 4 UNITS V V pF surges PARAMETER Device Specifications DC Breakdown Impulse Breakdown Insulation Resistance Capacitance Life Ratings Surge Life PMT(275)450 PARAMETER Device Specifications DC Breakdown Impulse Breakdown Insulation Resistance Capacitance Life Ratings Surge Life CONDITIONS 100V/s 5kV/s 100V 1MHz 1kA (PW=20 s) SYMBOL VBD Vbd IR C MIN 405 1010 500 TYP 450 MAX 495 750 4 - PMT(275)500 MIN 450 1010 500 TYP 500 MAX 550 750 4 UNITS V V pF surges UMT(275)550 PARAMETER Device Specifications DC Breakdown Impulse Breakdown Insulation Resistance Capacitance Life Ratings Surge Life CONDITIONS 100V/s 5kV/s 100V 1MHz 1kA (PW=20 s) SYMBOL VBD Vbd IR C MIN 495 1010 500 TYP 550 MAX 605 688 4 - UMT(275)600 MIN 540 1010 500 TYP 600 MAX 660 750 4 UNITS V V pF surges UMT(275)650 PARAMETER Device Specifications DC Breakdown Impulse Breakdown Insulation Resistance Capacitance Life Ratings Surge Life CONDITIONS 100V/s 5kV/s 100V 1MHz 1kA (PW=20 s) SYMBOL VBD Vbd IR C MIN 585 1010 500 TYP 650 MAX 715 813 4 - UMT(275)750 MIN 675 1010 500 TYP 750 MAX 825 938 4 UNITS V V pF surges UMT(275)800 PARAMETER Device Specifications DC Breakdown Impulse Breakdown Insulation Resistance Capacitance Life Ratings Surge Life CONDITIONS 100V/s 5kV/s 100V 1MHz 1kA (PW=20 s) Europe: 32-11-300868 UMT(275)850 MIN 765 1010 500 TYP 850 MAX 935 1063 4 UNITS V V pF surges SYMBOL VBD Vbd IR C MIN 720 1010 500 TYP 800 - MAX 880 1000 4 - North America: 1-800-CPCLARE Asia: 886-2-2523-6368 Japan: 81-3-3980-2212 550 HIGH-SPEED, HIGH-CURRENT SURGE PROTECTORS PMT/UMT (275) Series SPECIFICATIONS All characteristics at 25C UMT(275)1.0 CONDITIONS 100V/s 5kV/s 100V 1MHz 1kA (PW=20 s) SYMBOL VBD Vbd IR C MIN 0.9 1010 500 TYP 1.0 MAX 1.1 1.25 4 - UMT(275)1.5 MIN 1.35 1010 500 TYP 1.50 MAX 1.65 1.88 4 UNITS kV kV pF surges PARAMETER Device Specifications DC Breakdown Impulse Breakdown Insulation Resistance Capacitance Life Ratings Surge Life UMT(275)2.0 PARAMETER Device Specifications DC Breakdown Impulse Breakdown Insulation Resistance Capacitance Life Ratings Surge Life CONDITIONS 100V/s 5kV/s 100V 1MHz 1kA (PW=20 s) SYMBOL VBD Vbd IR C MIN 1.8 1010 500 TYP 2.0 MAX 2.2 2.5 4 - UMT(275)2.5 MIN 2.25 1010 500 TYP 2.50 MAX 2.75 3.13 4 UNITS kV kV pF surges MECHANICAL DIMENSIONS DIMENSIONS mm (inches) 19.05 0.76 (0.750 0.030) ORDERING INFORMATION Devices in the PMT/UMT(275) series with other breakdown voltages in the 350-2500V range are available upon request. A complete part number is represented by the digits below. Breakdown voltages are expressed in Volts for devices <1000V and kV for devices 1kV. For example, PMT(275)350 is a 350V PMT(275) series device, and UMT(275)2.0 is a 2kV UMT(275) series device. 1.93 0.13 DIA. (0.076 0.005) 4.75 0.76 (0.187 0.030) 5.00 0.76 MAX. (0.197 0.030) 8.00 0.13 DIA. (0.315 0.005) PMT(275) XXX UMT(275) XXX UMT(275) X.X Series PMT(275) UMT(275) for 350-500 V for 550-850 V for 1.0-2.5 kV Breakdown Voltage See specification tables www.cpclare.com 551 |
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