9/26/2023 0 Comments 2n4280 transistor cross reference![]() Hope some of this helps and does not confuse. So it sorta up to you and your best judgment on that suggestion from me. Oh and I gain match outputs but most others here say you don't have to in this older design. UPC: MPN: BZ6225608 Availability: Usually Ships in 3-5 Business Days Shipping: FREE Fedex Ground See details Warranty: 1 year replacement Warranty. ![]() So replace all emitter resistors with new along with outputs. I saw this first hand on a service center repair where they left in old sand blocks that might have ohmed out with meter but were toast inside and when i got the amp the old left in part was open as a barn door on a sunny day. For solid state devices which are responsive to visible or infrared radiant energy, see SEMICONDUCTOR DEVICE, PHOTO. If you leave a old beat up sand block in the circuitry it will open up the first time it gets stressed to a given point and it will open up and disconnect that output from your stack. 2N4288 Datasheet, Equivalent, Cross Reference Search Type Designator: 2N4288 Material of Transistor: Si Polarity: PNP Maximum Collector Power Dissipation (Pc): 0.25 W Maximum Collector-Base Voltage Vcb: 30 V Maximum Collector-Emitter Voltage Vce: 25 V Maximum Emitter-Base Voltage Veb: 6 V Maximum Collector Current Ic max: 0.1 A Max. Oh and my personal opinion is replace ALL sand blocks and all outputs together. So look again and be prepared for hidden failures, or those new outputs might not last very long ![]() I opted to to completely rebuild replacing all drivers but this was a clients piece and I wanted to be complete for his sake. ![]() Most any audio small signal transistors with reasonable noise figures will work here. transistor 2n4852 datasheet, cross reference, circuit and application notes in pdf format. If you stick with 2S numbers you should have no trouble with leg arrangements. The recent Mc2205 I did the channel drive boards looked ok too and had three blown shorted transistors, bad solder on the molex pins, and a single open resistor.Īnd thanks to c-dk and Audio Clinic and EchoWars and a few other here I was able to cross and get them replaced. A quick look in the MCM catalog showed the 2SC1328 listed at 9 cents each and the 2SA763 listed at 53 cents each. ![]()
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