Diode 1N4148 (300mA-100V)

Diode 1N4148 (300mA-100V) is a high-quality electronic component designed for Arduino, prototyping, and educational electronics. The 1N4148 small signal diodes are general purpose fast switching diodes used for small signal rectification.
KEY FEATURES OF 1N4148 SMALL SIGNAL DIODE :

General purpose small signal diodes
High switching speed of < 4nS
Up to 100V reverse voltage
Up to 0.3A continuous current (4A surge)

These are general purpose small fast switching diodes used for small signal rectification, meaning they only allow current to flow in one direction.  They can handle up to 100V reverse voltage and up to 300mA of continuous current.  Due to their modest power handling, these are mainly useful in digital or signal processing circuits.

The 1N4148 are polarized devices with a black band denoting the cathode end of the diode.
TECHNICAL SPECIFICATIONS

Maximum Ratings

VR
Peak Reverse Voltage
100V

IF
DC Forward Continuous Current
300mA

If
Recurrent Peak forward Current
400mA

IFSM
Peak Surge Current (1.0 Sec)
1A

Peak Surge Current (1.0uS)
4A

Operating Ratings

VF
Forward Voltage Drop
1V

trr
Switching Speed
< 4nS

Polarization

Black band indicates cathode

Package

DO-35

Package Type

Glass, axial leads

Datasheet

1N4148

1N4148 Datasheet It’s perfect for DIY makers, students, and anyone building custom electronic circuits or STEM kits.