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STK407-070 Chip: Seeking Datasheet and Verification of Authenticity

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Where can I find a datasheet for the STK407-070, and is the chip in the photo genuine or fake?

A datasheet for STK407-070B was linked, but the thread also says there is no exact STK407-070 datasheet available online, so the recommended approach is to use the schematic/application diagrams from equipment that used this STK family instead [#13043058] [#13044035] [#13048231] One reply explicitly said the chip in the photo is the original [#13043996] A later post shared a Pioneer service-manual page and STK407-70 application information, but another user warned that STK407-070 and STK407-090 are not interchangeable because the pinout differs [#18625944] [#18626492]
AI summary based on the discussion. May contain errors.
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  • #10 18625935
    trojan19730510
    Level 10  
    Posts: 7
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    here is part of the pioneer xc21 block with the stk chip ....
    Attachments:
    • Manual.pdf (1.64 MB) You must be logged in to download this attachment.
  • #12 18626492
    zadam64
    Level 39  
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    radiogaga wrote:
    http://www.elenota.pl/datasheet-pdf/157770/Sanyo/STK407-070B you can replace with a stronger STK 407-090 e.g.

    From what I found, 070 is not interchangeable with 090
    Examine the schematic of pioneer and the second stk407-090 application

    Added after 4 [minutes]:

    trojan19730510 wrote:
    here is part of the pioneer xc21 block with the stk chip ....

    I add full service and STK407-70 applications
    from what I found out 090 seems to be stronger but different pinology of the system. I do not propose to replace it.
    Attachments:
    • STK407-090-ETC.pdf (45.96 KB) You must be logged in to download this attachment.
    • STK407-070.pdf (54.27 KB) You must be logged in to download this attachment.
    • PIONEER M-IS22.pdf (1.78 MB) You must be logged in to download this attachment.
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Topic summary

LABEL_AI_GENERATED
The discussion revolves around the STK407-070 chip, with users seeking a datasheet and verification of its authenticity. A link to a datasheet for the STK407-070B is provided, along with suggestions to consider the STK407-090 as a stronger alternative. Users express difficulty in finding a datasheet online and share insights about the chip's application in amplifiers, referencing its use in devices like the Sony RX90 tower. There are concerns regarding the interchangeability of the STK407-070 with the STK407-090 due to differences in pin configuration. Additional resources and schematics are shared to assist in understanding the chip's specifications and applications.
AI summary based on the discussion. May contain errors.
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