DATA SHEET CS55B CS55D SILICON CONTROLLED RECTIFIER 0.8 AMPS, 200 AND 400 VOLTS TO-92 CASE DESCRIPTION The CENTRAL SEMICONDUCTOR CS55B series type are epoxy molded silicon controlled rectifiers designed for applications requiring a low gate sensitivity. MAXIMUM RATINGS (TA=25°C unless otherwise noted) SYMBOL Peak Repetitive Off-State Voltage RMS On-State Current (TC=60oC) Peak One Cycle Surge (t=10ms) I2t Value for Fusing (t=10ms) VDRM,VRRM IT(RMS) ITSM I2t Peak Gate Power (tp=10µs) Average Gate Power Dissipation PGM PG(AV) Peak Gate Current (tp=10µs) IGM VGM Tstg TJ Peak Gate Voltage (tp=10µs) Storage Temperature Junction Temperature Thermal Resistance Thermal Resistance CS55B CS55D 200 400 UNITS V 0.8 10 A A A2s 0.24 2.0 0.1 W W 1.0 A 8.0 -40 to +125 -40 to +125 ΘJA ΘJC V °C °C 200 °C/W 100 °C/W ELECTRICAL CHARACTERISTICS (TA=25°C unless otherwise noted) SYMBOL TEST CONDITIONS IDRM,IRRM IDRM,IRRM Rated VDRM,VRRM, RGK=1KΩ IGT IH VGT VTM VD=12V RGK=1KΩ VD=12V ITM=1.0A dv/dt VD=.67 x VDRM, RGK=1KΩ, TC=125°C MIN TYP MAX UNITS µA 1.00 Rated VDRM,VRRM, RGK=1KΩ, TC=125°C µA 100 25 200 µA 5.00 0.8 1.70 mA V V V/µs (SEE REVERSE SIDE) R1 CS55B / CS55D SILICON CONTROLLED RECTIFIER RMS ON-STATE CURRENT vs. CASE TEMPERATURE MAXIMUM ON-STATE CHARACTERISTICS 2 0.8 ITM, ON-STATE CURRENT (A) IT (RMS), RMS ON-STATE CURRENT (A) 1 0.6 0.4 0.2 0 1.5 1 TC=125°C 0.5 TC=25°C 0 0 25 50 75 100 125 150 0 0.5 1 1.5 TO-92 PACKAGE - MECHANICAL OUTLINE A B 123 SYMBOL A (DIA) B C D E F G H I C D E F G H I 2 VTM, ON-STATE VOLTAGE (V) TC, CASE TEMPERATURE (°C) DIMENSIONS INCHES MILLIMETERS MIN MAX MIN MAX 0.175 0.205 4.45 5.21 0.170 0.210 4.32 5.33 0.500 12.70 0.016 0.022 0.41 0.56 0.100 2.54 0.050 1.27 0.125 0.165 3.18 4.19 0.080 0.105 2.03 2.67 0.015 0.38 TO-92 (REV: R1) Lead Code: R1 1) Anode 2) Gate 3) Cathode 2.5