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Electronic Components, Accessories & Telecommunications
Discrete Semiconductors
Diodes
  • LLDB3 SMD Diode DIAC DB3
  • LLDB3 SMD Diode DIAC DB3
  • LLDB3 SMD Diode DIAC DB3
  • LLDB3 SMD Diode DIAC DB3
  • LLDB3 SMD Diode DIAC DB3
  • LLDB3 SMD Diode DIAC DB3
LLDB3 SMD Diode DIAC DB3
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LLDB3 SMD Diode DIAC DB3

  • 2500 - 9999 Pieces
    $0.02
  • >= 10000 Pieces
    $0.01
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LLDB3 SMD Diode DIAC DB3

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Bidirectional Triggering: Designed for AC circuits, enabling precise switching and phase control in electronic systems.
  • PCB Integration: Optimized for printed circuit board (PCB) applications, ensuring seamless integration into compact electronic devices.
  • Through-Hole Mounting: Secure, durable installation method suitable for high-voltage or high-current environments.

Key features

  • 1. Material Technology: Corrosion-Resistant Construction

    • With a durable red epoxy coating and corrosion-resistant metal terminals, ensure long-lasting performance in humid or electrically demanding environments.

  • 2. Interactive Design: Through-Hole Mounting Flexibility

    • With through-hole mounting, easily integrate into PCB designs for secure, stable connections—ideal for prototyping or high-voltage applications compared to surface-mount alternatives*.

  • 3. Performance Parameters: High Current Handling

    • With a robust coil-and-core design, handle high current loads efficiently, reducing overheating risks in AC circuits compared to standard diodes*.

  • 4. Scenario Solutions: Precision for PCB Applications

    • Designed for precise bidirectional switching in PCB circuits, enabling reliable operation in devices like motor controllers or phase-control systems.

  • 5. Certification Standards: Compliance with Industry Norms

    • Built to meet electrical safety and durability standards (e.g., RoHS compliance*), ensuring compatibility with global electronics manufacturing requirements.

Product details

LLDB3 SMD Diode DIAC DB3

The LLDB3 SMD Diode DIAC DB3 is a high-performance bidirectional diode designed for precision switching in PCB applications. Its through-hole mounting ensures secure integration into electronic circuits, while its compact cylindrical design (red-coated body with silver terminals) balances durability and space efficiency.

Technical specifications

FeatureSpecificationApplication Scenario
Mounting TypeThrough HoleSecure PCB assembly in industrial circuits
Breakdown Voltage30V ±5%AC phase control in motor drives
Power Dissipation500mWLow-power switching in thermostat systems
Operating Temperature-55°C to +150°CHarsh environments with thermal fluctuations
MaterialCeramic Core with Red Epoxy CoatingHigh-temperature resistance in automotive electronics

Customization guide

Adjustable parameters include breakdown voltage tolerance (±5% to ±10%) and power rating (up to 1W) to meet specific circuit requirements.

Get inspired

With its bidirectional switching capability, the LLDB3 is ideal for applications requiring precise AC voltage triggering, such as dimmer circuits or motor speed controllers.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Breakdown Voltage30V ±5%30V ±3%50V ±2%*
Max Current100mA150mA200mA
Thermal Resistance100°C/W80°C/W60°C/W
Package Size5mm x 3mm5mm x 3mm7mm x 4mm

Supplier's note

  1. Technical Breakthroughs:

    • The Pro Model’s 50V breakdown voltage enables handling of high-voltage AC signals in industrial inverters.
    • Advanced Model’s ±3% tolerance ensures precise switching in medical equipment.
    • All versions feature ceramic core insulation, reducing leakage current by 20% compared to plastic-based diodes.

  2. Optimal Version Selection:

    • Base Model: Suitable for standard PCBs in consumer electronics (e.g., household appliances).
    • Advanced Model: Ideal for precision applications like laboratory instruments or IoT sensors.
    • Pro Model: Recommended for industrial machinery and automotive systems requiring high-voltage stability.

With the Pro Model’s 50V rating, you can safely manage voltage spikes in inverters. The Advanced Model’s tighter tolerance ensures error-free operation in sensor circuits. Choose the Base Model for cost-effective solutions in low-power consumer devices.

Frequently asked questions

  • Which diode is best suited for through-hole PCB applications like the LLDB3 SMD Diode?

  • How does the LLDB3 SMD Diode handle high-temperature environments?

  • Is the LLDB3 SMD Diode compliant with industry safety standards?

  • What advantages does the LLDB3 SMD Diode offer over surface-mount diodes (SMD)?

  • How do I properly install the LLDB3 SMD Diode in a PCB?

  • Can the LLDB3 SMD Diode handle high-current surges in circuits?

  • What is the expected lifespan of the LLDB3 SMD Diode in continuous use?

  • Is the LLDB3 SMD Diode suitable for automotive electronics?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
DIAC (Bidirectional)Motor speed control, light dimmingBreakdown Voltage: 25V (Industry: 30V) ▲
(Triggers at 25V, 17% lower than standard)		Lower trigger voltage reduces energy waste ▲
Compact SMD design saves PCB space		Limited to low-power applications due to 25V threshold
Zener DiodeVoltage regulation in power suppliesZener Voltage: 5.1V ±5% (Industry: ±10%) ▲
(Higher precision for stable outputs)		Tight tolerance ensures reliable voltage clamping ▲
Handles 500mW power ▲		Costly for high-power (>1W) applications
Rectifier DiodeAC-DC conversion in adaptersForward Voltage: 0.7V (Industry: 0.9V) ▲
(Lower drop improves efficiency)		Through-hole mounting simplifies assembly ▲
Peak current: 1A ▲		Bulky compared to SMD versions
Signal DiodeSignal clipping in audio circuitsReverse Leakage: 1nA (Industry: 5nA) ▲
(Minimizes signal distortion)		Ultra-low leakage ideal for sensitive circuits ▲
Compact SMD package		Not rated for power handling (>500mW)
Thyristor TriggerPhase control in industrial heatersdv/dt Immunity: 100V/μs (Industry: 50V/μs) ▲
(Prevents false triggering)		Advanced dv/dt protection for harsh environments ▲
Peak surge current: 10A ▲		Requires matched triac for optimal performance
TVS DiodeSurge protection in IoT devicesClamping Voltage: 15V (Industry: 20V) ▲
(Faster response to voltage spikes)		Ultra-fast response time (1ps) ▲
ISO-compliant for consumer electronics		Limited energy absorption (<0.5J)

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The comparison data is based on manufacturer information and industry standards. Actual results may vary depending on individual use cases. It is advisable to verify details with the supplier for the most accurate information.