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The K Series Metal Push-Pull Connector is a high‑contact‑density circular connector designed by Reunion for systems where space is at a premium but signal count and reliability cannot be compromised. Featuring a push‑pull self‑latching system with tactile and audible lock confirmation, this series ensures secure mating even in high‑vibration or limited‑access installations. The connector's full‑metal housing provides 360° electromagnetic interference (EMI) shielding, while its multi‑key polarization prevents mismating.
Available in straight and right‑angle versions, with solder, crimp, or PCB termination options, the K Series accommodates 2 to 32 pins in shell sizes from 0 to 3. Its robust environmental sealing and wide operating temperature range make it suitable for both laboratory and field‑deployed equipment.
Reunion controls the entire manufacturing process—from precision injection molding to final assembly—ensuring consistent product quality; for engineers who require compact equipment without compromising performance, the K Series is undoubtedly a trusted choice.
Reunion engineers the K Series to meet exacting electrical, mechanical, and environmental standards. The table below summarizes the core parameters across shell sizes and contact configurations:
| Parameter | Specification (Standard Variant) |
| Shell Sizes | 0, 1, 2, 3 |
| Contact Count | 2 to 32 pins (depending on shell size and contact gauge) |
| Mating Cycles | >5,000 operations |
| Temperature Range | -45°C ~ +125°C |
| EMI Shielding | 360° full‑metal shielding |
| Ingress Protection | IP67 |
| Salt Spray Resistance | >72 hours |
| Vibration | 10–2000Hz, 15g |
| Mechanical Shock | 100g, 6ms |
| Contact Resistance | ≤5mΩ (initial) |
| Insulation Resistance | ≥5000MΩ (at 500VDC) |
All materials are RoHS‑compliant, and every connector batch undergoes 100% electrical testing, dimensional verification, and mechanical operation checks before dispatch.
The K Series Metal Push-Pull Connector is deployed across sectors where high pin count and connection integrity directly influence system performance and reliability.
Medical Equipment — Ultrasound probes, patient monitoring systems, surgical navigation tools, and portable diagnostic devices.
Aerospace & Defense — Avionics, flight data recorders, helmet‑mounted displays, and portable communication units.
Test & Measurement — Oscilloscopes, logic analyzers, spectrum analyzers, and calibration instruments.
Industrial Automation — Robotic controllers, vision systems, PLC I/O modules, and servo drives.
Audio‑Visual & Broadcasting — Professional cameras, broadcast switchers, and studio intercom systems.
A Shanghai‑based medical device OEM was designing a handheld ultrasound system requiring 16 signal contacts plus power in a compact footprint — while maintaining resistance to repeated disconnection in clinical use. After evaluating several options, they selected Reunion's 3K Series, 360° shielding. The connector's audible latching reduced user errors during probe changes, and the all‑metal housing protected sensitive analog signals from EMI generated by nearby motors and wireless modules. In field trials across five hospitals, the system demonstrated zero connector‑related failures over 3,000 mating cycles per unit. The client reported that the K Series' reliability was instrumental in achieving their Class IIa medical device certification.
A leading semiconductor test house in Shenzhen was upgrading its probe‑card interface boards, which required a dense, high‑cycle connector for signal routing between the test head and the device‑under‑test (DUT). The previous connector showed contact wear after 3,000 cycles, leading to false readings. Reunion provided a K Series custom assembly with 12 gold‑plated contacts, and an IP67 sealing option. After installation, the ATE system achieved over 5,000 consecutive test cycles without signal degradation, reducing test downtime by 40%. The integrator noted that the K Series' "floating" contact design compensated for minor alignment offsets during automated docking, a feature not present in the previous connector.
Reunion's commitment to quality is validated through a comprehensive suite of international certifications, covering design, manufacturing, and distribution.
| Certification | Scope |
| ISO 9001:2015 | Quality management system — design, production, and after‑sales service. |
| ISO 14001:2015 | Environmental management, covering waste reduction and sustainable material use. |
| ISO 13485:2016 | Quality management for medical devices — essential for healthcare OEMs. |
| UL Recognized | Component‑level safety certification for North American markets. |
| RoHS | Restriction of hazardous substances — compliance with EU Directive 2011/65/EU. |
Reunion's vertically integrated factory — spanning design, injection molding, soldering, wire processing, assembly, and testing — ensures every K Series connector is produced under strict process controls. Each batch is traceable via our ERP system, from incoming material inspection to final quality sign‑off.
Reunion recognizes that high‑density connector projects often demand tailored configurations. The K Series supports extensive modification options to meet unique electrical, mechanical, and branding requirements.
- Housing Color — Standard nickel or black; custom RAL colors upon request.
- Contact Plating — Gold (standard), silver, or tin; thickness can be specified.
- Cable Assemblies — Custom length, gauge (28AWG to 18AWG), jacketing material (PVC, PUR, silicone), and shielding.
- Contact Loading — Populate only the contacts you need; add dummy pins for mechanical balance.
- Keying Configuration — Choose from standard polarizing keys or create a custom key position.
- Logo Imprinting — Laser engraving of your brand or part number on the shell.
Reunion controls every critical step in its 4,000m² Shenzhen facility:
- Stamping — High‑speed precision stamping of contacts from copper alloy strip.
- Injection Molding — Inserts and housings molded from engineering plastics (e.g., PPS, LCP) rated to 200°C+.
- Plating — Barrel or selective plating for gold/nickel finishes.
- Assembly — Semi‑automated line with torque‑controlled screw fastening and contact insertion verification.
- Testing — 100% electrical (contact resistance, insulation, dielectric withstand) and mechanical (mating force, retention) tests.
- Packaging — Vacuum‑sealed anti‑static bags, desiccant included, packed in export‑grade cartons.
Yes. Reunion's K Series is designed with standard shell dimensions, contact spacing, and keying positions to be mechanically and electrically compatible with the most common high‑density circular connector systems. We maintain a comprehensive cross‑reference database covering ODU, LEMO, Fischer, and other major series. However, because contact loading and pin assignments can vary, we recommend sharing your existing connector part number or wiring diagram so our engineering team can verify matching and suggest adjustments. We have successfully provided drop‑in replacements for over 200 OEMs without requiring PCB or panel modifications.
ISO 13485 is the internationally recognized quality management standard specifically for medical devices. For Reunion, this certification means:
- Design controls that include risk management and validation of each product's performance.
- Production traceability — every batch of K Series connectors can be traced back to raw material lots, machine settings, and inspection records.
- Change control — any process or material modification is formally reviewed and re‑validated before implementation.
- Documented inspection and test plans that meet FDA and EU MDR requirements.
When you source the K Series for patient‑monitoring, diagnostic, or surgical applications, you receive not just a connector, but a fully documented quality record that supports your own regulatory submissions.
To begin a custom project, please provide: electrical requirements (current/voltage), mechanical constraints (space, orientation, cable exit), cable specification (gauge, length, jacket), environmental conditions (temperature, IP rating), target cost, and estimated annual volume. Reunion's 10‑person R&D team will evaluate feasibility and propose a solution within 2–3 working days. Our typical MOQ for custom K Series variants is 50–100 pieces for trial runs, though we are flexible for low‑volume urgent needs. No MOQ applies to standard catalog items — you can order even a single piece for testing.
Address
West of 2nd and 3rd Floor, Building B, Zhongjing Zhiyun Science Park, No. 606, Fengtang Avenue, Zhancheng Community, Fuhai Street, Bao 'an District, Shenzhen
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