JPH0295260U - - Google Patents

Info

Publication number
JPH0295260U
JPH0295260U JP212489U JP212489U JPH0295260U JP H0295260 U JPH0295260 U JP H0295260U JP 212489 U JP212489 U JP 212489U JP 212489 U JP212489 U JP 212489U JP H0295260 U JPH0295260 U JP H0295260U
Authority
JP
Japan
Prior art keywords
diffusion region
conductivity type
impurity diffusion
type impurity
constant voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP212489U
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP212489U priority Critical patent/JPH0295260U/ja
Publication of JPH0295260U publication Critical patent/JPH0295260U/ja
Pending legal-status Critical Current

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  • Bipolar Transistors (AREA)

Description

【図面の簡単な説明】
第1図はこの考案の定電圧ダイオードの一実施
例の製造工程説明図、第2図はこの考案の定電圧
ダイオードの一実施例の要部の断面図、第3図は
同上定電圧ダイオードの不純物濃度―拡散深さ特
性図、第4図は従来の定電圧ダイオードの断面図
、第5図は第4図の定電圧ダイオードの平面図、
第6図は従来の定電圧ダイオードの雑音電圧―電
流特性図、第7図は従来の定電圧ダイオードの電
流―電圧特性図、第8図は従来の別の定電圧ダイ
オードの断面図、第9図は第8図の定電圧ダイオ
ードの平面図である。 21…N型半導体層、22…第1の絶縁膜、2
3…P型不純物拡散領域、24…第2の絶縁膜、
25…N型不純物拡散領域、26…P型不純物拡
散領域、27…第3の絶縁膜、28,29…窓。

Claims (1)

  1. 【実用新案登録請求の範囲】 (a) 第1導電型半導体層内に形成され主表面よ
    り内部に不純物ピークを持つ第2導電型不純物拡
    散領域と、 (b) この第2導電型不純物拡散領域に接合しか
    つこの第2導電型不純物拡散領域よりも高濃度の
    第1導電型不純物拡散領域と、 (c) 上記第1導電型不純物拡散領域と上記第2
    導電型不純物拡散領域上に形成された電極引き出
    し用の窓と、 よりなる定電圧ダイオード。
JP212489U 1989-01-13 1989-01-13 Pending JPH0295260U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP212489U JPH0295260U (ja) 1989-01-13 1989-01-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP212489U JPH0295260U (ja) 1989-01-13 1989-01-13

Publications (1)

Publication Number Publication Date
JPH0295260U true JPH0295260U (ja) 1990-07-30

Family

ID=31202624

Family Applications (1)

Application Number Title Priority Date Filing Date
JP212489U Pending JPH0295260U (ja) 1989-01-13 1989-01-13

Country Status (1)

Country Link
JP (1) JPH0295260U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993026048A1 (en) * 1992-06-16 1993-12-23 Citizen Watch Co., Ltd. Pn junction diode and its manufacture method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993026048A1 (en) * 1992-06-16 1993-12-23 Citizen Watch Co., Ltd. Pn junction diode and its manufacture method

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