1N4003 200V 1A General Purpose Diode – Datasheet

The 1N4003 diode is a low cost general purpose switching diode for power supplies and voltage converters. The 1N4003 has a blocking voltage rating of 200V and can carry up to 1A of current. Diode drop forward voltage is 1.1V.

Features of 1N4003

  • 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 1N4003

Specification of 1N4003

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 Voltage200 V
Max. Reverse Current (Ir)0.01 mA
Max. RMS Reverse Voltage (Vr)140 V
Max. Forward Voltage Drop (Vf)1.1 V
Max Power Dissipation3 W
Reverse Current5 µA

Uses of 1N4003

1N4003 diode can be used in many general-purpose applications. It can be used to build a bridge rectifier, an integral part of DC power supplies that convert AC to DC. It can also be used for clipper applications, reverse current blocking in various component protection circuits, logic gates, etc.

Advantages of 1N4003

  • 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 1N4003

  • 1N4004, 1N4005, 1N4006, and 1N4007

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