2N5551 Transistor vs BT136 600E TRIAC: Which is Best? Article 2N5551 Transistor vs BT136 600E TRIAC: Which is Best? Marshall Dunlop January 20, 2025 The 2N5551 is an NPN bipolar junction transistor (BJT) designed for high-voltage, low-current, and general-purpose amplification or... Read More Read more about 2N5551 Transistor vs BT136 600E TRIAC: Which is Best?