NOS Tung-Sol TS-603 Transistor. ECG158 Equivalent. PNP, 32V, 1A, TO-3. Beautiful Baby Blue. Perfect for Boutique Fuzz Face Type Pedals!!! tungsoltransistor$14.95 Triode, USA Customer Service M-F 9AM-4PM CT 1-800-774-3201 Email us Anytime: questions@triodestore.com