BD737 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 45 V
• Collector-Base Voltage, max: 45 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 BD737 is the BD738.The 2SC2873 (SOT-89), 2SC2873-O (SOT-89), 2SC2873-Y (SOT-89), BDP947 (SOT-223), FMMT619 (SOT-23) and FZT690B (SOT-223) is the SMD version of the BD737 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the BD737 with the 2N6043, 2N6043G, 2N6044, 2N6044G, 2N6387, 2N6387G, 2N6388, 2N6388G, 2N6530, 2SC1826, 2SC1827, 2SC1985, 2SC1986, 2SC2315, 2SC2316, 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, 2SC3258, 2SC3258-O, 2SC3258-Y, 2SC3299, 2SC3299-O, 2SC3299-Y, 2SC3308, 2SC3308-O, 2SC3308-Y, 2SC3345, 2SC3345-O, 2SC3345-Y, 2SC3346, 2SC3346-O, 2SC3346-Y, 2SC3540, 2SC3540-O, 2SC3540-Y, 2SC3709, 2SC3709-O, 2SC3709-Y, 2SC3709A, 2SC3709A-O, 2SC3709A-Y, 2SC3710, 2SC3710-O, 2SC3710-Y, 2SC3710A, 2SC3710A-O, 2SC3710A-Y, 2SC3746, 2SC3746-Q, 2SC3746-R, 2SC3746-S, 2SC3747, 2SC3747-Q, 2SC3747-R, 2SC3747-S, 2SC3748, 2SC3748-Q, 2SC3748-R, 2SC3748-S, 2SC3851, 2SC3851A, 2SC4007, 2SC4007-E, 2SC4007-F, 2SC4007-G, 2SC4008, 2SC4008-E, 2SC4008-F, 2SC4008-G, 2SC4511, 2SC4511-O, 2SC4511-P, 2SC4511-Y, 2SC4512, 2SC4512-O, 2SC4512-P, 2SC4512-Y, 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, 2SD1265A-O, 2SD1265A-P, 2SD1267, 2SD1267-P, 2SD1267-Q, 2SD1267-R, 2SD1267A, 2SD1267A-P, 2SD1267A-Q, 2SD1267A-R, 2SD1269, 2SD1269-P, 2SD1269-Q, 2SD1269-R, 2SD1270, 2SD1270-P, 2SD1270-Q, 2SD1270-R, 2SD1271, 2SD1271-P, 2SD1271-Q, 2SD1271-R, 2SD1276, 2SD1276-P, 2SD1276-Q, 2SD1276A, 2SD1276A-P, 2SD1276A-Q, 2SD1277, 2SD1277-P, 2SD1277-Q, 2SD1277A, 2SD1277A-P, 2SD1277A-Q, 2SD1356, 2SD1356-O, 2SD1356-R, 2SD1356-Y, 2SD1362, 2SD1362-O, 2SD1362-Y, 2SD1363, 2SD1363-O, 2SD1363-Y, 2SD1408, 2SD1408-O, 2SD1408-R, 2SD1408-Y, 2SD1411, 2SD1411-O, 2SD1411-Y, 2SD1411A, 2SD1411A-O, 2SD1411A-Y, 2SD1412, 2SD1412-O, 2SD1412-Y, 2SD1414, 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, 2SD1891, 2SD1891-P, 2SD1891-Q, 2SD2060, 2SD2060-O, 2SD2060-R, 2SD2060-Y, 2SD362-O, 2SD362-R, 2SD389-O, 2SD389-P, 2SD389A-O, 2SD389A-P, 2SD476, 2SD476-B, 2SD476-C, 2SD476A, 2SD476A-B, 2SD476A-C, 2SD526, 2SD526-O, 2SD526-R, 2SD526-Y, 2SD553, 2SD553-O, 2SD553-Y, 2SD568, 2SD568-K, 2SD568-L, 2SD568-M, 2SD569, 2SD569-K, 2SD569-L, 2SD569-M, 2SD613, 2SD613-C, 2SD613-D, 2SD613-E, 2SD613-F, 2SD634, 2SD635, 2SD743, 2SD743-Q, 2SD743-R, 2SD743-S, 2SD812, 2SD812-P, 2SD812-Q, 2SD812-R, 2SD837, 2SD837-P, 2SD837-Q, 2SD837-R, 2SD837A, 2SD837A-P, 2SD837A-Q, 2SD837A-R, 2SD857, 2SD857-P, 2SD857-Q, 2SD857-R, 2SD857A, 2SD857A-P, 2SD857A-Q, 2SD857A-R, 2SD866, 2SD866-P, 2SD866-Q, 2SD866-R, BD533, BD533K, BD535, BD535K, BD537, BD537K, BD539A, BD539B, BD543A, BD543B, BD545A, BD545B, BD643, BD645, BD647, BD895, BD895A, BD897, BD897A, BD899, BD899A, BD947, BD949, BD951, BDT61, BDT61A, BDT63, BDT63A, BDT65, BDT65A, BDT81, BDT81F, BDT83, BDT83F, BDW23, BDW23A, BDW23B, BDW39, BDW40, BDW41, BDW41G, BDW53, BDW53A, BDW53B, BDW63, BDW63A, BDW63B, BDW73, BDW73A, BDW73B, BDW93, BDW93A, BDW93B, BDX33, BDX33A, BDX33B, BDX33BG, BDX53, BDX53A, BDX53B, BDX53BG, D44H11, D44H11FP, D44H8, KSD1408, KSD1408-O, KSD1408-R, KSD1408-Y, KSD1588, KSD1588-O, KSD1588-R, KSD1588-Y, KSD362-O, KSD362-R, KSD526, KSD526-O, KSD526-R, KSD526-Y, KSD568, KSD568-O, KSD568-R, KSD568-Y, KSD569, KSD569-O, KSD569-R, KSD569-Y, KTC2027, KTC2027-O, KTC2027-Y, KTD2060, KTD2060O, KTD2060R, KTD2060Y, MJE800T, MJE801T, MJE802T, MJE803T, NTE152, TIP100, TIP100G, TIP101, TIP101G, TIP120, TIP120G, TIP121, TIP121G, TIP130, TIP130G, TIP131, TIP131G, TIP140T, TIP141T or TTC3710B.