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The BC140 and BC160 are complimentary devices which are similar to the BC548 and BC558 but possess a collector currents of 1A and a Vcebo of 80v. These are similar to the North American 2N2219 and 2N2906.
you can replace 547 with 546 or 548, but sl100 cannot be used instead of BUH515, in same biasing conditions. BU515 can be replaced with BU508, because both are used in TV horizontal deflection section.