2SD1568-K Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 100 V
• Emitter-Base Voltage, max: 7 V
• Collector Current − Continuous, max: 4 A
• Collector Dissipation: 40 W
• DC Current Gain (h_fe): 100 to 200
• Transition Frequency, min: 20 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220

Here is an image showing the pin diagram of this transistor.The 2SD1568-K transistor can have a current gain of 100 to 200. The gain of the 2SD1568 will be in the range from 40 to 200, for the 2SD1568-L it will be in the range from 80 to 120, for the 2SD1568-M it will be in the range from 40 to 80.Sometimes the "2S" prefix is not marked on the package - the 2SD1568-K might only be marked "D1568-K".The complementary PNP transistor to the 2SD1568-K is the 2SB1090-K.You can replace the 2SD1568-K with the 2SC1826, 2SC1827, 2SC1985, 2SC1986, 2SC2075, 2SC2334, 2SC2527, 2SC3179, 2SC3253, 2SC3253-R, 2SC3254, 2SC3254-R, 2SC3255, 2SC3255-R, 2SC3258, 2SC3308, 2SC3346, 2SC3540, 2SC3710, 2SC3710A, 2SC3746, 2SC3746-R, 2SC3747, 2SC3747-R, 2SC3748, 2SC3748-R, 2SC3834, 2SC3851, 2SC3851A, 2SC4007, 2SC4007-E, 2SC4008, 2SC4008-E, 2SC4153, 2SC4550, 2SC4550-M, 2SC4551, 2SC4551-M, 2SC4552, 2SC4552-M, 2SC789, 2SD1134, 2SD1134-C, 2SD1267, 2SD1267A, 2SD1269, 2SD1270, 2SD1271, 2SD1274, 2SD1274A, 2SD1274B, 2SD1355, 2SD1356, 2SD1362, 2SD1407, 2SD1407A, 2SD1408, 2SD1411, 2SD1411A, 2SD1588, 2SD1588-K, 2SD2059, 2SD2060, 2SD363, 2SD476A, 2SD476A-C, 2SD525, 2SD526, 2SD568, 2SD568-K, 2SD569, 2SD569-K, 2SD613, 2SD613-E, 2SD743, 2SD743-Q, 2SD743A, 2SD743A-Q, 2SD812, 2SD812-P, 2SD823, 2SD857, 2SD857A, 2SD866, 2SD866A, BD203, BD243A, BD243B, BD243C, BD303, BD535, BD537, BD539A, BD539B, BD539C, BD539D, BD543A, BD543B, BD543C, BD545A, BD545B, BD545C, BD797, BD799, BD801, BD807, BD809, BD949, BD951, BD953, BD955, BDT81, BDT81F, BDT83, BDT83F, BDT85, BDT85F, BDT87, BDT87F, BDT91, BDT91F, BDT93, BDT93F, BDT95, BDT95F, BDX77, D44H11, D44H11FP, D44H8, KSC2334, KSD1408, KSD1588, KSD1588-Y, KSD363, KSD526, KSD568, KSD568-Y, KSD569, KSD569-Y, KTC2018, KTC2027, KTC2028, KTD2059, KTD2060, MJE15028, MJE15028G, NTE152, TIP41D or TIP42D.