1N4004 400V 1A General Purpose Diode – Datasheet

The 1N4004 diode is a low cost general purpose switching diode for power supplies and voltage converters. The 1N4004 has a blocking voltage rating of 400V and can carry up to 1A of current. Diode drop forward voltage is 1.1V.

Features of 1N4004

  • Good power handling capability
  • Diffusion crossing
  • High current capability
  • Low forward voltage
  • Drop surge protection up to 30A peak
  • Low reverse leakage current
  • Lead-free finish, RoHS compliant

Pinout of 1N4004

Specification of 1N4004

Package TypeDO-41
Diode Element MaterialSILICON
Peak Surge Current (8.3mS)30.0 A
Operating Temperature-Max175.0 Cel
Output Current-Max1.0 A
Peak Repeat. Reverse Voltage400 V
Max. Reverse Current (Ir)0.01 mA
Max. RMS Reverse Voltage (Vr)280V
Max. Forward Voltage Drop (Vf)1.1 V
Max Power Dissipation3 W
Reverse Current5 µA

Uses of 1N4004

The 1N4004 has many uses. For example, it can be used to build diode rectifiers that can be used to power electronic devices. They can also be used to block voltages for various purposes in electronic designs or circuits.

Advantages of 1N4004

  • Cheap construction
  • Low forward voltage drop
  • Low reverse leakage
  • High forward surge current capability


  • Power supply for electronic equipment
  • Battery charging circuit
  • Adapter
  • Rectifier circuit
  • Switching device
  • Purpose of short-circuit protection
  • Voltage Blocking

Equivalent of 1N4004

  • 1N4005, 1N4006, 1N4007, and 1N4148

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