Y50DX Connectors
Y50DX Connectors
Overview
- Series: Y50DX Series Circular Electrical Connector (Power Type)
- Designed in accordance with GJB101A-97 and equivalent to MIL-C-26482 technical specifications
- Reliable 3-pin bayonet coupling mechanism enables fast, secure, and vibration-resistant mating
- Operates reliably from -55°C to +125°C with excellent resistance to vibration, shock, humidity, and salt spray
- Available with general sealing, high-vacuum potting, and glass-to-metal hermetic sealing for zero-leakage applications
- Multiple shell sizes, contact arrangements, and cable termination options meet diverse power connection requirements
- Lightweight aluminum alloy shell provides excellent mechanical strength, impact resistance, and cable strain relief
- Gold- or silver-plated copper alloy contacts support current ratings from 3A to 25A with low contact resistance
- Ideal for military equipment, aerospace systems, power distribution, communication equipment, and other harsh-environment electrical application
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Y50DX Series Power Circular Connectors
The high-current branch of Huada’s Y50 circular connector platform. Bayonet-pin coupling, contact diameters from 2.5 mm to 12 mm, and current ratings up to 250 A per contact, for power distribution in strategic, tactical and vehicle/shipboard systems.
A Dedicated Power Connector Built On the Y50 Platform
Y50DX carries the same bayonet-pin, quick-disconnect coupling as the metric Y50X series, scaled up for power. Where Y50X tops out at 2.5 mm contacts and 25 A, Y50DX starts at 2.5 mm and runs up through 3, 3.5, 4, 5, 6, 7, 9 and 12 mm contacts rated to 250 A, so a single connector platform can cover both the signal harness and the power feed on the same piece of equipment.
The series shares the environmental and mechanical performance of the wider Y50 family — a −55°C to +125°C operating range, 500 mating cycles, and manufacture to GJB101A-97, MIL-C-26482 and GJB598A-96 technical requirements — while adding the larger shell sizes and heavier-gauge inserts needed for power distribution.
Key Features
- Internal bayonet-pin coupling for fast, tool-free mate and de-mate
- Contact diameters from 2.5 mm to 12 mm, rated 25 A to 250 A per contact
- Nine shell sizes, from 12 up to the heavy-duty D404 power shell
- Sixteen insert arrangements (2 to 5 contacts per insert) across the size range
- Contact resistance as low as ≤1.0 mΩ on larger contact sizes
- Manufactured to GJB101A-97, MIL-C-26482 and GJB598A-96 technical requirements
- Keyed inserts (five key positions) prevent cross-mating between similar connectors
- Shared coupling geometry with Y50X for consistent handling across a wiring harness
Environmental & Electrical Specifications
| Parameter | Rating |
|---|---|
| Operating temperature | −55°C to +125°C |
| Relative humidity | 90%–95% at 40 ± 2°C |
| Operating air pressure | 101.33 kPa to 4.4 kPa |
| Vibration | 10–2000 Hz, acceleration 196 m/s² |
| Shock | Acceleration 980 m/s² |
| Bump / collision | Acceleration 392 m/s² |
| Mold (fungus) resistance | Tested per GJB101A-97 §3.3.1, method 4.6.2 |
| Salt spray | Tested per GJB101A-97 §3.6.13, method 4.6.13 |
| Rain resistance | Tested per GJB101A-97 §3.6.17, method 4.6.17 |
| Parameter | Rating |
|---|---|
| Insulation resistance | ≥3000 MΩ (normal atmosphere) · ≥500 MΩ (high temperature) · ≥20 MΩ (humid) |
| Air-tightness | ≤6×10⁻² Pa·L/s (standard receptacle) · ≤1×10⁻⁶ Pa·L/s (glass-sintered receptacle) |
| Dielectric withstand voltage | AC 1500 V |
| Mechanical life | 500 mating cycles |
Contact Ratings
| Contact diameter | Ø2.5 | Ø3 | Ø3.5 | Ø4 | Ø5 | Ø6 | Ø7 | Ø9 | Ø12 mm |
|---|---|---|---|---|---|---|---|---|---|
| Rated current | 25 A | 50 A | 50 A | 60 A | 75 A | 100 A | 100 A | 150 A | 250 A |
| Contact resistance | ≤1.5 mΩ | ≤1.0 mΩ | |||||||
How to Read a Y50DX Part Number
Y50DX part numbers add a dedicated power-series field to the same structure used across the Y50 platform. Use the breakdown below to specify a connector, or send us your target shell size and contact count and we will confirm the full part number for you.
Y 50 D P IIII 20 04 Z K 10-21 — Y: product family code for circular electrical connector.
2 — 50: design series number.
3 — D: series category — power-series product.
4 — Structural/seal form: X = welded/potted seal, P = welded & shielded/potted seal, H = glass seal.
5 — Insert position: I, II, III, IV or V (position III is left unmarked).
6 — Shell size: 12, 14, 16, 18, 20, 22, 24, 32 or D404.
7 — Contact count: 02, 03, 04 or 05.
8 — Plug/receptacle: T = plug, Z = receptacle.
9 — Contact type: J = pin, K = socket, S = wall-mount (feed-through) pin & socket.
10 — Tail style / mounting code: for plugs — 1 ground/pressure-clamp, 2 cable clamp-plate, 3 simple potted, 4 anti-vibration strain-relief, 5 90° angled, 6 spring cable-guard. For receptacles — 10 square flange, 10-2 square flange with cable shroud, 11 round flange, 14 jam-nut (screw coupling).
Shell Sizes & Insert Arrangements
Sixteen insert arrangements are available across nine shell sizes, from the compact shell 12 up to the heavy-duty D404 power shell. Detailed pin-out (mating-face) diagrams for every arrangement are provided in the full datasheet on request.
| Shell size | Insert code(s) | Contact count options |
|---|---|---|
| 12 | 1203 · 1204 | 3 · 4 |
| 14 | 1402 · 1403 · 1404 | 2 · 3 · 4 |
| 16 | 1604 | 4 |
| 18 | 1803 · 1804 | 3 · 4 |
| 20 | 2003 · 2004 | 3 · 4 |
| 22 | 2203 · 2204 | 3 · 4 |
| 24 | 2404 | 4 |
| 32 | 3204 · 3205 | 4 · 5 |
| D404 | D404 | 4 (heavy-duty power shell) |
Anti-mis-mating Keyway Positions
Each insulator carries a keyway on its outer diameter. Rotating the key to one of five positions during assembly guarantees that same-spec plugs and receptacles cannot be cross-mated.
| Position code | I | II | III | IV | V |
|---|---|---|---|---|---|
| Key letter | V | Y | I | L | T |
| Angle from key I | 157° | 102° | 0° | 135° | 146° |
Receptacle Mounting Dimensions
All dimensions below are in millimeters; confirm exact tolerances against the CAD drawing or datasheet before finalizing a design.
| Shell | A | L | M | K | D | B | Mounting hole (d) |
|---|---|---|---|---|---|---|---|
| 12 | 27 | 28 | 12.5 | 14 | 20 | 21 | 3.6 |
| 14 | 30 | 28 | 12.5 | 14 | 23 | 23 | 3.6 |
| 16 | 33 | 28 | 12.5 | 14 | 26 | 25 | 3.6 |
| 18 | 36 | 28 | 12.5 | 14 | 29 | 27 | 3.6 |
| 20 | 39 | 28 | 12.5 | 14.7 | 32 | 29 | 3.6 |
| 22 | 42 | 28 | 12.5 | 14.7 | 35 | 32 | 3.6 |
| 24 | 45 | 28 | 12.5 | 14.7 | 38 | 35 | 3.6 |
| 32 | 60 | 38 | 17 | 21 | 54 | 50 | 4.5 |
Where Y50DX Connectors are Used
Tactical vehicle power
High-current interconnects for vehicle-mounted power distribution and battery systems.
Ground power units
Sealed, quick-disconnect power feeds for aircraft and equipment ground support.
Shipboard power distribution
Rugged connectors for power runs in marine and shipboard electrical systems.
Radar & heavy electronics
High-current, low-resistance contacts for power-hungry field equipment.
Why Choose Us?
We manufactures the full Y50 circular connector platform — the high-current Y50DX series described here and the metric Y50X series. Every shell size and insert arrangement is produced to meet GJB101A-97, MIL-C-26482 and GJB598A-96 technical requirements.
FAQ
1. What is the Y50DX series connector used for?
Y50DX is the power branch of the Y50 circular connector platform, built for high-current power distribution in strategic and tactical systems, ground power units, vehicle and shipboard power feeds, and other applications that need a sealed, quick-disconnect power connector.
2. How much current can a Y50DX connector carry?
Y50DX contacts range from 2.5 mm to 12 mm in diameter and are rated from 25 A up to 250 A per contact, depending on the contact size selected.
3. What is the largest Y50DX shell size?
The largest shell in the Y50DX range is D404, a heavy-duty power shell with a single four-contact insert arrangement for the highest current requirements.
4.What is the difference between Y50DX and Y50X connectors?
Y50DX is the power series, built around larger contact diameters from 2.5 mm to 12 mm carrying up to 250 A per contact. Y50X is the metric general-purpose series, sized for contact diameters from 0.8 mm to 2.5 mm and currents up to 25 A per contact, intended for signal and lower-current power connections.
5. How do I read a Y50DX part number?
A Y50DX part number is built from left to right as: product code (Y), design series (50), power-series code (D), structural/seal form (X/P/H), insert position (I–V), shell size (12–32 or D404), contact count (02–05), plug/receptacle designator (T/Z), contact type (J/K/S), and tail style or mounting code. See the full breakdown above.
Need a Y50DX Datasheet or a Quote?
Tell us the shell size, contact count and current requirement, and we’ll confirm the full part number, drawings and lead time.
Send Message to get Datasheet.
Strict Production Process
Engineers develop optimized electronic circuits and structural designs based on real application needs.
High-quality components and materials are carefully selected from trusted suppliers to ensure long-term reliability.
Automated SMT and precision soldering technologies are used to build stable and high-performance circuit boards.
Sensor elements or connector terminals are assembled with the PCB and housing to ensure accurate operation and strong mechanical stability.
Each product undergoes strict calibration and functional testing to guarantee accuracy and stable performance.
Every unit is carefully inspected, labeled, and securely packaged to ensure it arrives safely and performs reliably for your applications.
Strict Production Process of Yafeite
