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Amphenol Aerospace M3902990529 High-Density Cylindrical Connector

Amphenol® JT/LJT series connectors offer high reliability and high contact density with space-saving design, suitable for aerospace and military applications. They feature MIL-DTL-38999 qualification, optional EMI shielding, multiple contact configurations, hermetic seals, and quick positive bayonet coupling. Available in various shell sizes and styles, these connectors support crimp, solder, PCB, coax, twinax, fiber optic, thermocouple, and filter contacts. Designed for demanding environments, they include features such as interfacial sealing, environmental resistance, and optional ground plane capabilities that ensure optimal performance and durability in harsh conditions.

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Source:Newark
Part No:M39029/90-529
Stock:1
Inv Date:06-12-2026
Price: Unit price: $105.22
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Part No:M39029/90-529
Stock:1030
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Price: Unit price: $98.94
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Source:DigiKey
Part No:M39029/90-529
Stock:257
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Price: Unit price: $41.32
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Source:DigiKey
Part No:M39029/90-529
Stock:80
Inv Date:06-12-2026
Price: Unit price: $125.34
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Part No:M39029/90-529
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Inv Date:06-13-2026
Price: Unit price: $115.72
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Part No:M39029/90-529
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Price: Unit price: $58.51
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Part No:M39029/90-529
Stock:209
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Price: Unit price: $59.88
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Part No:M3902990529
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Part No:M39029/90-529
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Authorized Distributors
Part No:M39029/90-529
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Part No:M39029/90-529
Stock:8
Inv Date:06-12-2026
Price: Unit price: $47.29
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Part No:M39029/90-529
Stock:4893
Inv Date:06-12-2026
Price: Unit price: $42.8157
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Part No:M39029/90-529
Stock:25
Inv Date:06-12-2026
Price: Unit price: $93.2271
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Part No:M39029/90-529
Stock:14680
Inv Date:06-12-2026
Price: Unit price: $42.8157
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Part No:M39029/90-529
Stock:75
Inv Date:06-12-2026
Price: Unit price: $93.2271
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Part No:M39029/90-529
Stock:269
Inv Date:06-13-2026
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Part No:M39029/90-529
Stock:112
Inv Date:06-12-2026
Price: Unit price: $35.11
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Amphenol Aerospace M3902990529 High-Density Cylindrical Connector Specifications:

  • Shell components: impact extruded or machined aluminum, cadmium plated on wall components
  • Shell sizes: 8 through 25, with various styles including hermetic, box, straight, jam nut, and 90° plugs
  • Contact options: sizes 8, 10, 12, 16, 20, 22M, 22D, and 22, with crimp, solder, PCB, coax, twinax, fiber, thermocouple, and filter contacts
  • Plating: gold over nickel, electroless nickel, olive drab cadmium, chromate treated, or other finishes
  • Environmental resistance: corrosion-resistant finishes, hermetic seals, EMI shielding, and optional ground plane versions
  • Temperature ratings: standard up to 302°F, high temp versions up to 392°F
  • Sealing: fluorinated silicone interfacial gaskets, moisture sealing gaskets, optional hermetic sealing
  • Locking: bayonet coupling for secure connection with key/keyway polarization
  • Application: aerospace, military, high-reliability systems, with multiple insert arrangements and configurations

Buy the Buy Amphenol JT/LJT Part Number M3902990529 Online

Order your Amphenol JT/LJT series connector today for aerospace and military applications. Engineered for high reliability, these connectors offer high contact density, space efficiency, hermetic sealing, and EMI shielding. Pre-qualified to MIL-DTL-38999 standards, they support multiple contact configurations, styles, and finishes compatible with demanding environments. Ideal for harsh conditions, they feature quick bayonet locking, interfacial sealing, and optional ground plane versions. Whether for crimp, solder, PCB, coax, fiber, or thermocouple use, these connectors ensure durable, corrosion-resistant performance and easy installation at your fingertips.

Get Amphenol JT/LJT connector today—experienced in aerospace, engineered for high reliability and space-saving performance.

Frequently Asked Questions

Where can I buy Amphenol Aerospace M3902990529?

You can click on the BUY or RFQ button to purchase M3902990529 from an authorized Amphenol Aerospace distributor.

How do I troubleshoot issues or seek technical support for part M3902990529?

You can download the M3902990529 datasheet or visit the Amphenol Aerospace website for support.

Who is the manufacturer of M3902990529?

Amphenol Aerospace

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