1N400x general-purpose diodes

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1N4001 diode in DO-41 axial package (through hole mount)
M7 diode in DO-214AC (SMA) package (surface mount version of 1N4007 that is common in Asia)
A schematic symbol for 1N400x

The 1N4001 series (or 1N4000 series[1]) is a family of popular 1 A (ampere) general-purpose silicon rectifier diodes commonly used in AC adapters for common household appliances. Blocking voltage varies from 50 to 1000 volts. This diode series is available in DO-41 axial package, SMA and MELF surface mount packages.[2][3][4]

The 1N5400 series is a similarly popular series for higher-current 3 A applications. These diodes are typically available in the larger DO-201AD axial package to dissipate heat better.[5]


These are fairly low-speed rectifier diodes, being inefficient for square waves of more than 15 kHz.[6] These devices are widely used and recommended.[7][8][9]

The series was second sourced by many manufacturers. The 1N4000 series were in the Motorola Semiconductor Data Manual in 1965, as replacements for 1N2609 through 1N2617.[10] The 1N5400 series were announced in Electrical Design News in 1968, along with the now lesser known 1.5 A 1N5391 series.[11]

The table below shows the maximum repetitive reverse blocking voltages of each of the members of the 1N4000 and 1N5400 series.

Diode part numbers[12][13][14]
Voltage Thru-hole Surface-mount
1 Amp
3 Amp
1 Amp
3 Amp
50 V 1N4001 1N5400 M1 S3A
100 V 1N4002 1N5401 M2 S3B
200 V 1N4003 1N5402 M3 S3D
300 V 1N5403
400 V 1N4004 1N5404 M4 S3G
500 V 1N5405
600 V 1N4005 1N5406 M5 S3J
800 V 1N4006 1N5407 M6 S3K
1000 V 1N4007 1N5408 M7 S3M

In the version of these components manufactured for Fairchild Semiconductor in Suzhou, the silicon chip that rectifies the current weighs just 880 micrograms.[15][16][17][18]

See also[edit]


  1. ^ Though some writers and datasheets refer to "1N4000 series", a 1N4000 is a 10-watt Zener diode unrelated to the 1N4001 series of 1 ampere rectifiers.
  2. ^ 1N4001–1N4007 Datasheet; DO-41 Package; Kingtonics.
  3. ^ M1-M7 Datasheet; SMA Package; Kingtonics.
  4. ^ SM4001-SM4007 Datasheet; MELF Package; Kingtonics.
  5. ^ 1N5400–1N5408 Datasheet; DO-201AD (DO-27) Package; Kingtonics.
  6. ^ Wireless World, 88: 75, 1982 
  7. ^ Gordon McComb (2001). The robot builder's bonanza (2nd ed.). McGraw-Hill Professional. p. 41. ISBN 978-0-07-136296-2. Common diodes are the 1N914, for light-duty signal-switching applications, and the 1N4000 series (1N4001, 1N4002, 1N4003, and 1N4004). 
  8. ^ Home power, Issues 21–32. Electron Connection, Ltd. 1991. p. 173. A good generic diode for 1 Amp or less is the 1N4000 series devices. 
  9. ^ Timothy J. Maloney (1992). Electricity: fundamental concepts and applications. Delmar Publishers. p. 404. ISBN 978-0-8273-4675-8. A Type No. 1N4004 diode, a popular diode for rectifying ac to dc. 
  10. ^ Semiconductor Data Manual; Motorola; May 1965.; archive.org
  11. ^ Electrical Design News, Volume 13, 1968
  12. ^ 1N4001–1N4007 Datasheet; DO-41 Package; Fairchild.
  13. ^ 1N5400–1N5408 Datasheet; DO-201AD Package; Fairchild.
  14. ^ Robert Diffenderfer (2005). Electronic devices: systems and applications. Thomson Delmar Learning. p. 54. ISBN 978-1-4018-3514-9. 
  15. ^ 1N5401 Certificate of Compliance (PDF), 8 Apr 2011 
  16. ^ 1N5408 Certificate of Compliance (PDF), 8 Apr 2011 
  17. ^ 1N4001 Certificate of Compliance (PDF), 8 Apr 2011 
  18. ^ 1N4007 Certificate of Compliance (PDF), 8 Apr 2011 

External links[edit]

Datasheets / Databooks