Persamaan Transistor D998 B778 Install !!better!! -

| Mistake | Consequence | | :--- | :--- | | Using non-Darlington transistors | Oscillation, distortion, immediate failure | | Replacing only one channel | Mismatched gain, channel imbalance | | Forgetting thermal paste | Overheating, thermal runaway | | Swapping NPN/PNP positions | Short circuit (reverse polarity) | | Using substitutes with lower Vceo | Breakdown on high voltage peaks |

| NPN Substitute | PNP Substitute | Notes | | :--- | :--- | :--- | | | 2SB1429 | Exact electrical match, TO-3P | | 2SD2390 | 2SB1560 | Higher voltage (160V), recommended | | 2SD2589 | 2SB1659 | Modern equivalent | | MJ11015 | MJ11016 | TO-3 metal can (requires adapter) | | TIP142 | TIP147 | Lower current (10A vs 10A ok), TO-247 | persamaan transistor d998 b778 install

: When searching for "persamaan" (equivalents), ensure the replacement matches the 120V/10A/80W ratings. Common alternatives found in similar high-fidelity schematics include the 2SC3856/2SA1492 or 2SC5200/2SA1943 pairs, though pin compatibility and package size should be verified first. | Mistake | Consequence | | :--- |

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