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Amphenol D3899920FC4SN MIL-DTL-38999 Connector

This high-performance MIL-DTL-38999 Series III circular connector is designed for military and aerospace applications. Featuring a durable metal shell with secure spin-tight coupling, it ensures reliable electrical connections in severe environments. The connector provides superior EMI shielding, corrosion resistance, and moisture sealing, suitable for demanding systems requiring robustness and longevity. It supports various insert arrangements, contact configurations, and finishes, including hermetic and composite options. This versatile connector is ideal for demanding aerospace, defense, and ground vehicle applications where durability, reliability, and performance are critical.

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Source:Newark
Part No:D38999/20FC4SN
Stock:320
Inv Date:05-29-2026
Price: Unit price: $200.01
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Part No:D38999/20FC4SN
Stock:25
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Part No:D38999/20FC4SN
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Part No:D38999/20FC4SN
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Source:DigiKey
Part No:D38999/20FC4SN
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Price: Unit price: $1280.21
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Price: Unit price: $92.87
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Part No:D38999/20FC4SN
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Price: Unit price: $173.24
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Part No:D38999/20FC4SN
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Price: Unit price: $5234.58
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Source:DigiKey
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Price: Unit price: $241.63
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Price: Unit price: $52.75
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Price: Unit price: $273.65
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Price: Unit price: $54.63
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Price: Unit price: $38.93
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Stock:21
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Price: Unit price: $35.5932
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Part No:D38999/20FC4SN
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Price: Unit price: $1272.07
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Price: Unit price: $33.0491
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Price: Unit price: $43.1098
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Part No:D38999/20FC4SN
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Amphenol D3899920FC4SN MIL-DTL-38999 Connector Specifications:

  • Shell Material: Metal (Aluminum, Stainless Steel, or Composite)
  • Shell Size: 9-25
  • Coupling Mechanism: Spin-Tight, 360° self-locking
  • EMI Shielding: ≥65dB at 10 GHz
  • Contact Rating: Varies by contact size and type
  • Operating Temperature: -55°C to +200°C
  • Corrosion Resistance: Salt spray 500+ hours (metal), 2000 hours (composite)
  • Moisture Resistance: Interfacial sealing design
  • Seal Type: Interfacial, environmental
  • Finish Options: Electroless nickel, olive drab cadmium
  • Intermateable: Yes, with standard MIL-DTL-38999 Series III connectors
  • Electrical Conductivity: Assured by metal-to-metal coupling
  • Insert Arrangements: Multiple, including fiber optic, coaxial, triax, twinax, and PCB tails
  • Hermetic Versions: Available with hermetic sealing
  • Temperature Rating: -55°C to +200°C
  • Vibration/Shock: Severe high-temperature vibration up to 200°C
  • Standards Compliance: MIL-DTL-38999 Series III
  • Application: Aerospace, military ground systems, harsh environment electronics

Buy the Amphenol Series III MIL-DTL-38999 Connector Reliable Aerospace Part Number D3899920FC4SN

Purchase the Amphenol MIL-DTL-38999 Series III connector online to secure a high-performance, rugged, and reliable circular connector for aerospace, defense, or harsh environment applications. Featuring a robust metal shell, secure spin-tight coupling, and superior EMI shielding, this connector guarantees lasting performance in demanding situations. With multiple configurations including hermetic and composite options, it meets MIL standards for vibration, corrosion, and moisture resistance. Buy now and enhance your systems’ reliability with proven military-grade interconnections designed for severe environmental conditions.

Order your Amphenol MIL-DTL-38999 connector series III today and ensure your systems have the high performance, durability, and reliable connections they demand.

Frequently Asked Questions

Where can I buy Amphenol D3899920FC4SN?

You can click on the BUY or RFQ button to purchase D3899920FC4SN from an authorized Amphenol distributor.

How do I troubleshoot issues or seek technical support for part D3899920FC4SN?

You can download the D3899920FC4SN datasheet or visit the Amphenol website for support.

Who is the manufacturer of D3899920FC4SN?

Amphenol

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