BD735 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 35 V
• Collector-Base Voltage, max: 35 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 4 A
• Collector Dissipation: 40 W
• DC Current Gain (h_fe): 40
• 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 complementary PNP transistor to the BD735 is the BD736.The 2STF1340 (SOT-89) is the SMD version of the BD735 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the BD735 with the 2N6043, 2N6043G, 2N6386, 2N6387, 2N6387G, 2SC1826, 2SC1985, 2SC2315, 2SC2562, 2SC2562O, 2SC2562Y, 2SC3145, 2SC3179, 2SC3239, 2SC3239-O, 2SC3239-Y, 2SC3253, 2SC3253-Q, 2SC3253-R, 2SC3253-S, 2SC3254, 2SC3254-Q, 2SC3254-R, 2SC3254-S, 2SC3255, 2SC3255-Q, 2SC3255-R, 2SC3255-S, 2SC3299, 2SC3299-O, 2SC3299-Y, 2SC3345, 2SC3345-O, 2SC3345-Y, 2SC3709, 2SC3709-O, 2SC3709-Y, 2SC3709A, 2SC3709A-O, 2SC3709A-Y, 2SC3746, 2SC3746-Q, 2SC3746-R, 2SC3746-S, 2SC3747, 2SC3747-Q, 2SC3747-R, 2SC3747-S, 2SC3748, 2SC3748-Q, 2SC3748-R, 2SC3748-S, 2SC3851, 2SC4550, 2SC4550-K, 2SC4550-L, 2SC4550-M, 2SC4551, 2SC4551-K, 2SC4551-L, 2SC4551-M, 2SC4552, 2SC4552-K, 2SC4552-L, 2SC4552-M, 2SC4881, 2SC789, 2SC789-O, 2SC789-R, 2SC789-Y, 2SD1060, 2SD1060-Q, 2SD1060-R, 2SD1060-S, 2SD1061, 2SD1061-Q, 2SD1061-R, 2SD1061-S, 2SD1062, 2SD1062-Q, 2SD1062-R, 2SD1062-S, 2SD1133, 2SD1133-B, 2SD1133-C, 2SD1133-D, 2SD1134, 2SD1134-B, 2SD1134-C, 2SD1134-D, 2SD1158, 2SD1190, 2SD1191, 2SD1192, 2SD1265-O, 2SD1265-P, 2SD1267, 2SD1267-P, 2SD1267-Q, 2SD1267-R, 2SD1276, 2SD1276-P, 2SD1276-Q, 2SD1277, 2SD1277-P, 2SD1277-Q, 2SD1363, 2SD1363-O, 2SD1363-Y, 2SD1412, 2SD1412-O, 2SD1412-Y, 2SD1444A, 2SD1444A-P, 2SD1444A-Q, 2SD1444A-R, 2SD1445A, 2SD1445A-P, 2SD1445A-Q, 2SD1568, 2SD1568-K, 2SD1568-L, 2SD1568-M, 2SD1588, 2SD1588-K, 2SD1588-L, 2SD1588-M, 2SD1667, 2SD1667-Q, 2SD1667-R, 2SD1667-S, 2SD1668, 2SD1668-Q, 2SD1668-R, 2SD1668-S, 2SD1669, 2SD1669-Q, 2SD1669-R, 2SD1669-S, 2SD1825, 2SD1826, 2SD1827, 2SD362-O, 2SD362-R, 2SD389-O, 2SD389-P, 2SD476, 2SD476-B, 2SD476-C, 2SD476A, 2SD476A-B, 2SD476A-C, 2SD553, 2SD553-O, 2SD553-Y, 2SD568, 2SD568-K, 2SD568-L, 2SD568-M, 2SD635, 2SD837, 2SD837-P, 2SD837-Q, 2SD837-R, 2SD857, 2SD857-P, 2SD857-Q, 2SD857-R, BD533, BD533K, BD535, BD535K, BD539, BD539A, BD543, BD543A, BD545, BD545A, BD643, BD645, BD737, BD895, BD895A, BD897, BD897A, BD947, BD949, BDT61, BDT63, BDT65, BDT81, BDT81F, BDW23, BDW23A, BDW39, BDW40, BDW53, BDW53A, BDW63, BDW63A, BDW73, BDW73A, BDW93, BDW93A, BDX33, BDX33A, BDX53, BDX53A, D44H8, KSD1588, KSD1588-O, KSD1588-R, KSD1588-Y, KSD362-O, KSD362-R, KSD568, KSD568-O, KSD568-R, KSD568-Y, MJE800T, MJE801T, TIP100, TIP100G, TIP120, TIP120G, TIP130, TIP130G or TIP140T.