SB-200 AMPLIFIER CAPACITOR VALUES AND LOCATION BREAKDOWN
The Heathkit SB-200 contains approximately 20 capacitors across its RF, power supply, and bias circuits. Below is a comprehensive list of every capacitor, its location, original value, and a valid modern replacement part number. Note on Part Numbers: Modern capacitors are rarely sold with the exact legacy Heathkit part numbers. The replacements listed below are industry-standard equivalents available from suppliers like Digi-Key, Mouser, or RF Parts Company. Voltage ratings for replacements are equal to or higher than originals for safety. 1. High Voltage Power Supply (Main Filter & Bleeder) Located on the main power supply board or chassis mount near the transformer. These are critical for safety and performance. Component Location Original Value Modern Replacement (Part Number Example) C1 – C6 HV Filter Bank (6 caps in series) 125 µF, 450V Electrolytic Panasonic ECG-UPA2V121 (120µF, 350V, use 6) or Cornell Dubilier 380LX121M450 (120µF, 450V). ...