1N4148 signal diode

Silicon switching diode thumb|right|Three 1N4148 diodes in glass DO-35 axial package. The black band on the right is the cathode side. thumb|right|Diode schematic symbol vs cathode marking on the package. The 1N4148 is a standard silicon switching signal diode. It is one of the most popular and long-lived switching diodes because of its dependable specifications and low cost. Its name follows the JEDEC nomenclature. The 1N4148 is useful in switching applications up to about 100 MHz with a reverse-recovery time of no more than 4 ns. History Texas Instruments announced the 1N914 diode in 1960.Texas Instruments 1N914 / 1N916 New Product Advertisement https://www.worldradiohistory.com/hd2/IDX-Site-Technical/Engineering-General/Archive-Tele-Tech-IDX/IDX/60s/Electronic-Industries-1960-03-OCR-Page-0201.pdf Electronic Industries magazine 201 March 1960 It was registered at JEDEC by Texas Instruments no later than 1961, and was second-sourced by 11 manufacturers that same year.Semiconductor Diode & Rectifier Characteristics Tabulation https://archive.org/details/DATASemiconductorDiodeRectifierCharacteristicsTabulation1961VolVII/page/n211/mode/2up Derivation and Tabulation Associates 209 April 1961 The 1N4148 was registered at JEDEC in 1968 as a silicon switching signal diode for military and industrial applications.Announcement of Electron Device Type Registration, Release No. 4443A. The Joint Electron Device Engineering Council November 25, 1968 May 15, 2021 https://global.ihs.com/doc_detail.cfm?document_name=EIA%201N4148-1N4154 subscription It was second-sourced by many manufacturers; Texas Instruments listed their version of the device in an October 1966 data sheet.The Transistor and Diode Data Book, Texas Instruments Incorporated, publication no. CC-413 71243-73-CSS, no date, page 10-34 The 1N914 and 1N4148 have an enduring popularity in low-current applications.A Tutorial on Diodes https://www.nutsvolts.com/magazine/article/just_for_starters_200409 Nuts and Volts https://web.archive.org/web/20221127223101/https://www.nutsvolts.com/magazine/article/just_for_starters_200409 November 27, 2022 14 September 2004 live Overview thumb|right|Cross section of a 1N914 in glass axial package As the most common mass-produced switching diode, the 1N4148 replaced the older 1N914. They can be used interchangeably, and are cross-reference replacements for each other. They differed mainly in their leakage current specification, however, today most manufacturers list common specifications. For example, Vishay lists the same leakage current for both parts: 25 nA at -20 V, 25°C 5 μA at -75 V, 25°C 50 μA at -20 V, 150°C Packages The JEDEC registered part numbers 1N914 and 1N4148 were originally only available in an axial package, but over time similar parts became available in surface-mount packages too. Through-hole package 1N4148 in DO-35 glass axial package. Surface-mount packages LL4148 in MiniMELF package. 1N4148W in SOD-123 package. 1N4148WS in SOD-323 package. 1N4148WT in SOD-523 package. Note: Some 1N4148 family surface-mount packages are marked with "T4" text. Specifications thumb|500px|right|I–V (current vs. voltage) graph of various diodes, including 1N4148 Absolute maximum ratings (stress ratings, consult datasheet for recommended ratings) VRRM = 100 V  (maximum repetitive reverse voltage) IO = 200 mA  (average rectified forward current) IF = 300 mA  (DC forward current) If = 400 mA  (recurring peak forward current) IFSM = 1 A at 1 s pulse width; 4 A at 1 μs pulse width (non-repetitive peak forward surge current) Electrical and thermal characteristics VF = 1 V at 10 mA (maximum forward voltage)The Semiconctor Data Library 1973 Motorola Semiconductor Products 73 4th VR = 75 V at 5 μA; 100 V at 100 μA (minimum breakdown voltage and reverse leakage current) trr = 4 ns (maximum reverse-recovery time) PD = 500 mW (maximum power dissipation) See also 1N400x rectifier diodes 1N58xx Schottky diodes Diode logic References 1N4148 / 1N4448 Datasheet; DO-35 Package. https://www.diodes.com/assets/Datasheets/products_inactive_data/ds12019.pdf May 2012 Diodes Inc https://web.archive.org/web/20201027071916/https://www.diodes.com/assets/Datasheets/products_inactive_data/ds12019.pdf October 27, 2020 live 1N4148W / BAV16W Datasheet; SOD-123 Package. https://www.diodes.com/assets/Datasheets/ds30086.pdf January 2017 Diodes Inc https://web.archive.org/web/20210213123259/https://www.diodes.com/assets/Datasheets/ds30086.pdf February 13, 2021 live 1N4148WS / BAV16WS Datasheet; SOD-323 Package. https://www.diodes.com/assets/Datasheets/ds30097.pdf March 2016 Diodes Inc https://web.archive.org/web/20200922104604/https://www.diodes.com/assets/Datasheets/ds30097.pdf September 22, 2020 live 1N4148WT Datasheet; SOD-523 Package. https://www.diodes.com/assets/Datasheets/ds30396.pdf March 2018 Diodes Inc https://web.archive.org/web/20200901090417/https://www.diodes.com/assets/Datasheets/ds30396.pdf September 1, 2020 dead 1N4148 / 1N4448 / 1N914 / 1N916 Datasheet; DO-35 Package. https://www.fairchildsemi.com/datasheets/1N/1N4148.pdf June 2015 Fairchild https://web.archive.org/web/20171101081452/https://www.fairchildsemi.com/datasheets/1N/1N4148.pdf November 1, 2017 dead 1N4148 Datasheet; DO-35 Package. https://www.kingtronics.com/pdf/1N4148.pdf June 2015 Kingtronics https://web.archive.org/web/20201001202231/https://www.kingtronics.com/pdf/1N4148.pdf October 1, 2020 live LL4148 Datasheet; MiniMELF Package. https://www.kingtronics.com/pdf/LL4148.pdf June 2015 Kingtronics https://web.archive.org/web/20201001195402/https://www.kingtronics.com/pdf/LL4148.pdf October 1, 2020 live 1N4148 Datasheet; DO-35 Package. https://www.mccsemi.com/pdf/Products/1N4148(DO-35).pdf February 2013 MCC https://web.archive.org/web/20210515032107/https://www.mccsemi.com/pdf/Products/1N4148%28DO-35%29.pdf May 15, 2021 live 1N4148W Datasheet; SOD-123 Package. https://www.mccsemi.com/pdf/Products/1N4148W(SOD-123).pdf March 2021 MCC https://web.archive.org/web/20210515030643/https://www.mccsemi.com/pdf/Products/1N4148W(SOD-123).pdf May 15, 2021 live 1N4148WX Datasheet; SOD-323 Package. https://www.mccsemi.com/pdf/Products/1N4148WX(SOD-323).pdf December 2020 MCC https://web.archive.org/web/20210515030930/https://www.mccsemi.com/pdf/Products/1N4148WX%28SOD-323%29.pdf May 15, 2021 live 1N4148X Datasheet; SOD-523 Package. https://www.mccsemi.com/pdf/Products/1N4148X(SOD-523).pdf December 2020 MCC https://web.archive.org/web/20210515031258/https://www.mccsemi.com/pdf/Products/1N4148X%28SOD-523%29.pdf May 15, 2021 live 1N4148UR-1 Datasheet; MiniMELF Package. https://www.microsemi.com/document-portal/doc_download/5804-1n4148ur-1-datasheet November 2012 Microsemi https://web.archive.org/web/20210225024500/https://www.microsemi.com/document-portal/doc_download/5804-1n4148ur-1-datasheet February 25, 2021 live 1N914 Datasheet; DO-35 Package. https://www.vishay.com/docs/85622/1n914.pdf February 2020 Vishay https://web.archive.org/web/20210515055438/https://www.vishay.com/docs/85622/1n914.pdf May 15, 2021 live 1N4148 Datasheet; DO-35 Package. https://www.vishay.com/docs/81857/1n4148.pdf July 2017 Vishay https://web.archive.org/web/20210515055631/https://www.vishay.com/docs/81857/1n4148.pdf May 15, 2021 live 1N4148W Datasheet; SOD-123 Package. https://www.vishay.com/docs/85748/1n4148w.pdf February 2018 Vishay https://web.archive.org/web/20210515055832/https://www.vishay.com/docs/85748/1n4148w.pdf May 15, 2021 live 1N4148WS Datasheet; SOD-323 Package. https://www.vishay.com/docs/85751/1n4148ws.pdf July 2017 Vishay https://web.archive.org/web/20210515060035/https://www.vishay.com/docs/85751/1n4148ws.pdf May 15, 2021 live Further reading Historical databooks Transistor and Diode Data Book, 1100 pages, 1970, Fairchild Semiconductor. Diode Data Book, 210 pages, 1978, Fairchild Semiconductor. Rectifiers and Zener Diodes Data Book, 508 pages, 1988, Motorola. Rectifier Device Data Book, 410 pages, 1995, Motorola. Transistor and Diode Data Book, 1258 pages, 1973, Texas Instruments. External links 1N4148 Diodes Diodes (SMD) The 1N4148: The Signal Diode That Ended Up Everywhere Category:Diodes