1N4148 Suppliers and Product Information

ElecSuppliers Part Number GuideAug 14, 2026

1N4148 is a high-conductance fast switching diode from onsemi. It is a small-signal diode designed for electronic circuits that require fast switching characteristics. The device has a 100 V maximum repetitive reverse voltage and a maximum forward current of 300 mA.

For buyers sourcing 1N4148, checking the exact part number, electrical specifications, package type and supplier information is important before purchasing.

1N4148 Product Overview

The 1N4148 is a general-purpose small-signal switching diode supplied by onsemi. The device uses an axial-lead package and is identified as a DO-204AH (DO-35) package in the manufacturer's ordering information.

The diode is designed for applications where fast switching and low reverse recovery time are required. Onsemi lists 1N4148 as a high-conductance fast diode with a 100 V minimum reverse voltage rating and 0.3 A maximum forward current.

1N4148 Key Specifications

Important product information for 1N4148 includes:

Manufacturer: onsemi

Component type: Small Signal Diode

Diode type: Fast Switching Diode

Maximum repetitive reverse voltage: 100 V

Maximum forward current: 300 mA

Maximum reverse current: 5 µA

Package: DO-35 / DO-204AH

Mounting type: Through Hole

Reverse recovery time: approximately 4 ns

The exact electrical characteristics should be checked against the manufacturer's latest datasheet for the specific ordering configuration.

1N4148 Features

1N4148 is designed for fast switching applications. Its short reverse recovery time makes it suitable for circuits where switching speed is an important consideration.

The through-hole DO-35 package provides a traditional axial-lead format that can be used in through-hole circuit boards and other electronic assemblies.

Onsemi also lists several ordering configurations related to the 1N4148 product, including bulk, ammo and tape-and-reel versions. Buyers should check the complete ordering code when selecting a particular packaging option.

1N4148 Applications

1N4148 can be used in electronic circuits requiring a fast small-signal switching diode.

Typical applications can include switching circuits, signal processing, logic circuits and general-purpose electronic designs where the diode's voltage, current and switching characteristics meet the circuit requirements.

The appropriate diode should always be selected according to the electrical conditions of the actual application.

1N4148 Suppliers

When sourcing 1N4148, buyers should verify the complete manufacturer part number and compare supplier information before placing an order.

Important sourcing factors include product availability, required quantity, package and packaging method, lead time and product traceability.

Current component listings show 1N4148 through multiple distribution channels, while onsemi identifies the device as an active product and provides several ordering configurations.

ElecSuppliers provides a platform where buyers can find electronic component suppliers and review product information for 1N4148 and other electronic components.

What to Check When Buying 1N4148

Before purchasing 1N4148, buyers should confirm the reverse voltage rating, forward current, reverse recovery characteristics and package requirements.

The exact ordering code should also be checked because 1N4148 is available in different packaging configurations. For example, onsemi lists 1N4148 in bulk as well as 1N4148TR and other packaging variants.

For production applications, buyers should verify the manufacturer's latest documentation and confirm supplier information before placing an order.

Find 1N4148 Suppliers

Buyers searching for 1N4148 suppliers can use ElecSuppliers to find companies offering this onsemi diode and related electronic components.

Availability, pricing, lead time and purchasing conditions can change over time. Buyers should contact suppliers directly to confirm current availability, quantity, packaging and other commercial requirements.

ElecSuppliers connects global buyers with electronic component suppliers and provides product and supplier information for electronic component sourcing.