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Amphenol D3899920KD18PB MIL-DTL-38999 Series III Connector

This high-performance MIL-DTL-38999 Series III circular connector is engineered for military, aerospace, and severe environment applications. It offers rapid coupling via a triple-start thread, solid metal-to-metal grounding, and superior EMI shielding of at least 65dB at 10 GHz. The connector features recessed, scoop-proof contacts to prevent damage, and has options for stainless steel or aluminum shells with cadmium or nickel plating for corrosion resistance. It incorporates interfacial seals for moisture protection, is available hermetic, and supports various insert arrangements including fiber optics, coaxial, twinax, and high-speed differential contacts. The robust design ensures reliable performance under high vibration, shock, and temperature conditions up to 200°C, making it ideal for critical military and aerospace systems.

Authorized Distributors
Source:DigiKey
Part No:D38999/20KD18PB
Stock:62
Inv Date:05-29-2026
Price: Unit price: $110.26
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Source:DigiKey
Part No:D38999/20KD18PB
Stock:0
Inv Date:05-29-2026
Price: Unit price: $125.679
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Source:DigiKey
Part No:D38999/20KD18PB
Stock:14
Inv Date:05-29-2026
Price: Unit price: $580.44
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Part No:D3899920KD18PB
Stock:0
Inv Date:05-30-2026
Price: N/A
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Part No:D38999/20KD18PB
Stock:0
Inv Date:05-29-2026
Price: Unit price: $146.19
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Part No:D38999/20KD18PB
Stock:5
Inv Date:05-29-2026
Price: Unit price: $75.0858
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Part No:D38999/20KD18PB
Stock:1
Inv Date:05-29-2026
Price: Unit price: $75.0858
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Part No:D38999/20KD18PB
Stock:11
Inv Date:05-29-2026
Price: Unit price: $97.24
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Amphenol D3899920KD18PB MIL-DTL-38999 Series III Connector Specifications:

  • Shell Material: Aluminum or Stainless Steel with cadmium or nickel plating
  • Shell Sizes: 9 to 25
  • Coupling: Quick self-locking triple-start thread, 360° turn
  • EMI Shielding: 65dB minimum at 10 GHz
  • Contact Rating: Up to 46 Amps (Power), various for coax, twinax, fiber optics
  • Contacts: Recessed scoop-proof contacts, gold plated, removable
  • Temperature Range: -55°C to +200°C
  • Sealing: Interfacial moisture seals; hermetic versions available
  • Corrosion Resistance: Salt spray resistant for 500-2000 hours depending on shell material
  • Vibration/Shock: Operable under severe high temperature and vibration up to 200°C
  • Insert arrangements: Multiple configurations including fiber optics, coax, triax, twinax, quadrax, and PCB tail
  • Standard certifications: MIL-DTL-38999 Series III, applicable patents
  • Optional features: Ground plane, hermetic, filter/transient protection, ESD protection

Buy the Buy Amphenol MIL-DTL-38999 Series III Connector Part Number D3899920KD18PB Online

Order the Amphenol MIL-DTL-38999 Series III Connector online now and experience superior performance in harsh environments. This connector offers quick, reliable coupling with corrosion resistance, EMI shielding of at least 65dB at 10 GHz, and versatile configurations including fiber optics and coaxial contacts. Designed to endure temperature extremes up to 200°C, vibration, and moisture, it ensures dependable connectivity for aerospace, military, and severe environment applications. Secure your high-performance connector today for seamless integration and long-term durability in demanding systems.

Get Amphenol MIL-DTL-38999 Series III Connector today—built for durability, high vibration, and EMI shielding excellence in aerospace and military systems.

Frequently Asked Questions

Where can I buy Amphenol D3899920KD18PB?

You can click on the BUY or RFQ button to purchase D3899920KD18PB from an authorized Amphenol distributor.

How do I troubleshoot issues or seek technical support for part D3899920KD18PB?

You can download the D3899920KD18PB datasheet or visit the Amphenol website for support.

Who is the manufacturer of D3899920KD18PB?

Amphenol

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