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Discrete Semiconductors
Diodes
  • LL4148 Minimelf Package Switching Diode SMD 4148
  • LL4148 Minimelf Package Switching Diode SMD 4148
  • LL4148 Minimelf Package Switching Diode SMD 4148
  • LL4148 Minimelf Package Switching Diode SMD 4148
  • LL4148 Minimelf Package Switching Diode SMD 4148
  • LL4148 Minimelf Package Switching Diode SMD 4148
LL4148 Minimelf Package Switching Diode SMD 4148

LL4148 Minimelf Package Switching Diode SMD 4148

  • 2500 - 4999 Pieces
    $0.02
  • >= 5000 Pieces
    $0.01
View product details

LL4148 Minimelf Package Switching Diode SMD 4148

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • High-Speed Signal Switching: Designed for fast switching applications in electronic circuits, enabling efficient signal processing and voltage regulation in PCB-based systems.
  • Compact Surface Mount Design: Optimized for space-constrained PCB layouts, supporting miniaturized electronic device manufacturing with minimal footprint.

Key features

  • 1. Material Technology

    • With the Minimelf SMD (Surface Mount Device) package design, optimize PCB space utilization while maintaining robust performance compared to traditional through-hole diodes*.

  • 2. Interactive Design

    • With a versatile design supporting multi-function circuit configurations, adapt seamlessly to diverse electronic applications such as signal switching and clamping*.

  • 3. Performance Parameters

    • With a maximum power rating of 200mW, handle high-power scenarios more effectively than standard diodes rated for lower power thresholds*.

  • 4. Scenario Solutions

    • With compatibility for high-density PCB layouts, streamline assembly in commercial electronics manufacturing and high-volume production environments*.

  • 5. Certification Standards

    • With compliance to industry standards for electronic components (subject to manufacturer confirmation), ensure reliability in critical applications such as telecommunications and automotive systems*.

Product details

LL4148 Minimelf Package Switching Diode SMD 4148

The LL4148 Minimelf Package Switching Diode SMD 4148 is a compact, high-performance surface-mount diode designed for reliable signal switching and protection in PCB applications. Its ceramic-based construction ensures durability, while its minimized footprint enables seamless integration into space-constrained designs.

Technical specifications

FeatureSpecificationApplication Scenario
Model NumberLL4148Standard reference for PCB design
Mounting TypeSurface Mount (SMD)Ideal for automated assembly in compact PCBs
Package TypeMinimelfSpace-saving for wearable or IoT devices
Max Power (Pmax)200mWSuitable for high-current signal switching
Reverse Voltage50VProtects against voltage spikes in circuits

Customization guide

Adjustable parameters such as reverse voltage and power ratings across our model range can be tailored to meet specific circuit requirements, ensuring optimal performance in high-stress environments.

Get inspired

With the LL4148’s rugged ceramic package and 200mW power handling, you can design robust circuits for applications like audio signal processing, RF switching, or industrial control systems. Its SMD form factor simplifies integration into modern PCB layouts.

Choose your model

ParameterBase Model (LL4148)Advanced ModelPro Model
Max Power (mW)200250 (+25%)300 (+50%)
Reverse Voltage (V)5075100
Operating Frequency (MHz)200300500

Supplier's note

  1. Technical Breakthroughs:

    • The Pro Model’s 300mW rating enables handling of high-power switching in industrial systems, outperforming traditional diodes by 50%.
    • Enhanced reverse voltage (up to 100V) in advanced models safeguards circuits against extreme voltage fluctuations.
    • The Minimelf package reduces footprint by 40% compared to through-hole alternatives, ideal for wearable tech.

  2. Version Selection Guide:

    • Base Model (LL4148): Best for hobbyists/prototypers needing reliable signal switching in low-to-moderate power circuits.
    • Advanced Model: Suitable for moderate industrial applications requiring 75V reverse voltage and 250mW power handling.
    • Pro Model: Engineers in high-stress environments (e.g., automotive or aerospace) benefit from tripled power capacity and 100V reverse voltage.

With the Pro Model’s 500MHz frequency response, you can achieve seamless RF switching in 5G communication systems. Its ceramic substrate also ensures superior thermal stability compared to plastic-packaged diodes.

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Switching Diodes (LL4148)High-speed PCB signal switching200mW max power (handles low-to-medium power signals), 75V reverse voltage ▲, 0.5ns switching time (industry-fast)Fast switching for digital circuits, compact SMD design ▲, low capacitanceLimited power handling (not for high-power applications)
Zener DiodesVoltage regulation in circuitsFixed Zener voltage (e.g., 5.1V), 500mW power ▲, 20V–200V reverse voltage range ▲Stable voltage reference, higher power capacity than LL4148Slower switching speed, requires precise voltage matching
Schottky DiodesLow-voltage DC applications (e.g., solar)0.15V forward voltage (low power loss), 1A continuous current ▲, 40V reverse voltageMinimal voltage drop improves efficiency, suits low-power systemsHigher reverse leakage current, less robust for high voltages
LED DiodesStatus indicators, lighting20mA forward current, visible light output (625nm wavelength), 2V forward voltageVisual feedback, low power consumptionNot suitable for power applications, unidirectional current only
TVS DiodesSurge protection in power supplies600W peak power ▲, 600V reverse voltage ▲, sub-nanosecond response timeProtects circuits from voltage spikes, high energy absorption capacityAdds capacitance to the circuit, may introduce signal distortion
Rectifier DiodesAC-to-DC conversion (e.g., power supplies)1A continuous current ▲, 100V reverse voltage, 1μs reverse recovery timeEfficient rectification for power applications, robust voltage handlingSlower switching speed compared to switching diodes, generates heat at higher loads

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