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LS4148 The Vishay LS4148 is a small signal fast switching diode designed for high-speed applications. It features a QuadroMELF package and robust electrical characteristics.
Mfr Part #:

LS4148

Available from 1 distributors
Mfr Name: MEI
MEI
The Vishay LS4148 is a small signal fast switching diode designed for high-speed applications. It features a QuadroMELF package and robust electrical characteristics.
✓ Total Stock: 241 pcs
$ Price Range: $1.20

LS4148 Available from 1 distributor

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✓ Non-Authorised
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Bristol Electronics ✓
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241 pcs
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241 pcs On Request 1 On Request On Request On Request On Request On Request
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LS4148 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Diode Capacitance
Junction Temperature
Peak Forward Surge Current
Power Dissipation
Reverse Voltage
Storage Temperature
Weight
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LS4148 Description

Short technical summary and product information.

The Vishay LS4148 is a silicon epitaxial planar diode designed for extremely fast switching applications. It comes in a compact QuadroMELF (SOD-80) package, making it suitable for space-constrained designs.

 

Key electrical specifications include a repetitive peak reverse voltage of 100V, a forward continuous current of up to 300mA, and a power dissipation of 500mW. The diode exhibits a typical forward voltage of 0.86V at 50mA and a maximum reverse current of 25nA at 20V.

 

With a junction temperature rating of 175°C and a thermal resistance of 300 K/W, the LS4148 is built for reliable operation. Its fast switching speed makes it ideal for use in digital logic circuits, high-frequency switching power supplies, and signal processing applications where quick response times are critical.

 

The QuadroMELF package offers good thermal performance and is suitable for surface-mount assembly. The diode's electrical data is identical to the industry-standard 1N4148 and 1N4448 devices, ensuring compatibility and ease of integration into existing designs.

LS4148 Quick Information

Product Type: Diode
Series: LS4148
Canonical Name: LS4148 Small Signal Fast Switching Diode
Subcategory: Switching Diode

LS4148 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LS4148 Estimated Pricing

Qty Low High
1+ $1.20 $1.20

Estimated market price range - modelled values for guidance only, not live distributor offers.

LS4148 Features

  • Extremely fast switching diode.
  • 100V repetitive peak reverse voltage.
  • 300mA forward continuous current.
  • 500mW power dissipation.
  • QuadroMELF (SOD-80) package.

LS4148 Applications

  • Ideal for high-speed switching.
  • Used in digital logic circuits.
  • Suitable for signal processing.
  • Applicable in power supplies.

LS4148 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum repetitive peak reverse voltage of the LS4148?

100V.

What is the forward continuous current rating of the LS4148?

300mA.

What is the package type of the LS4148?

QuadroMELF (SOD-80).

What is the maximum junction temperature of the LS4148?

175°C.

What is the typical forward voltage of the LS4148 at 50mA?

0.86V.

What is the reverse leakage current of the LS4148 at 20V?

25nA maximum.

What is the peak forward surge current rating of the LS4148?

2A for a 1 μs pulse.

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