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Yahoo Bid Home Appliances, Audio & Video, Camera Electronic Components Transistors
金田式 NEC 2SC960(放熱板を外せば2SC959) 2Pair  
     

  • Product Quantity
    : 1
  • Starting Bid
    :3,500円
  • Highest Bidder
    : みき62 / Rating:24
  • Listing Date
    :2025年10月22日 18時10分
  • Bidding closes on
    :2025年10月29日 22時45分
  • Auction Number
    :e1204945800
  • Condition
    :New product
  • Automatic Extension
    :Yes
  • Authentication
    :No
  • Early Closing
    :Yes
  • Can I return the product?
    :no
  • Description
  • Q&A ()
  • Cost Estimator
  • Problem Item Response Procedur
Notes
  1. The import of electronic parts requires relevant certificates, such as: IC, capacitors, transistors, power supplies... and other electronic related parts (such as motherboards, power transformers), and we cannot assist you in importing.
金田式 NEC 2SC960(放熱板を外せば2SC959) 2Pairです。
2SA606とコンプリで使えます。
hFEは105、117それぞれのPairです。

古い希少なデバイスの選別はn数がとれないので、困難を極めます。
特に、コンプリメンタリーはほぼ無理だと思います。

ただ、安心できるのは、帰還電圧100%のEFはペア選別する意味はありません。
ランクが異なろうが構いません。
DCアンプを構成する二段目、三段目のデバイス(同極性)も結局は電流帰還をかけて
使うので、これまたhFEを揃える意味がないのです。20~30%差があっても問題なし。
初段だけは揃えておくかDUAL-FETを使うのです。
あとは適当でOK。低域で100%帰還となるACアンプなら、初段も適当でOK。
アンプ全体の出力特性を測定しても差は出ないのです。
出てきたなあと思えるのはループゲインにもよりますが、数百KHzといった上の帯域で
歪成分が増えてくるかな?という感じです。オーディオアナライザでは測定できないので
FFTで測定して分かる程度。あまり意味のない事に時間を割き、金をつかい、選別落ち
した希少なデバイスが使われないのはもったいないことです。
(元メーカ技術者の参考意見です)

ちなみに、私の制作したDCアンプ(初段を除き無選別)やフォノアンプ(全て無選別)
は極めて安定で、優れた特性を得ております。

希少デバイスは、選別せず(故障していないかは見たほうがいい)そのまま使いましょう。

希少なデバイスに関する参考意見でした。

NC・NRでお願いします。




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   Air Freight: If the item status is not confirmed within two days after the arrival notice, any customer complaints cannot be addressed with the seller.

2. After Receiving the Product

Please confirm and inspect the product as soon as possible to ensure that the product specifications, quantity, accessories, and description are correct

If, unfortunately, there are any issues, you can refer to the following examples on how to report related product problems:
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Important Notes:
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2. Please keep the complete product packaging (including the shipping label information), and refrain from repairing or altering the original condition on your own, as any changes may result in the case being unable to be processed.
3. Please provide the relevant information within 48 hours to avoid missing the golden hour for reflection and causing situations that cannot be handled.
4. Due to 99% of Japanese sellers being unwilling or unaware of shipping goods overseas, if a seller is willing to handle the issue, the goods must be sent back to Japan, and the international shipping costs incurred must be borne by the member. Letao will use postal EMS international express to send the goods back to Japan.
5. As the goods are purchased from overseas, it may take approximately one to two weeks to complete the relevant processing procedures when issues arise with the goods. Please be reminded that you can inquire about the approximate cost through the EMS service at the post office.

4. FAQ

1. Issue of Authenticity: If antique or branded goods are found to be counterfeit upon receipt, clear photos showing the differences between the genuine product and the imitation must be provided as evidence. If unable to provide relevant proof, assistance can be sought to find a third-party reputable organization for a premium authentication service .
2. Leaking Iron Teapot: If an antique iron teapot is leaking, please take clear photos of the leaking area and provide them.
3. Transport Damage: If the goods are damaged during international shipping (to the pickup point), you need to provide photos of the outer packaging of the parcel and clear photos of the damaged goods' outer packaging.

※ Note: Photos provided to sellers should not contain any foreign-related information.
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    Product name: 金田式 NEC 2SC960(放熱板を外せば2SC959) 2Pair
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my