At Shenzhen Xinjukang Technology (XJK Power), we design and manufacture AC/DC power adapters, medical power supplies, PoE adapters, and open-frame power solutions.
Every product must meet strict global safety certifications, premium reliability targets, and customizable engineering requirements.
Below is an in-depth look into our complete production workflow:
Step 1: Circuit Design & Compliance Engineering
Our R&D team performs:
- System requirement analysis
- Safety and EMC evaluations (UL/CE/UKCA/KC/PSE/CCC…)
- Thermal simulation
- Energy-efficiency design (DOE Level VI / ErP)
We ensure:
✔ Low ripple noise
✔ High power conversion efficiency
✔ Stable performance under full load
✔ Long MTBF and excellent thermal management
We also follow DFMEA to avoid potential failure modes early in development.
💡 Design focus differs per application — Medical grade requires IEC 60601-1 & 2×MOPP insulation.
Step 2: Global Component Sourcing & Verification
We cooperate with world-leading component suppliers:
TI, ON, Infineon, ST, Rubycon, Yageo…
Quality checks include:
- RoHS/REACH compliance
- Traceability control
- Sample testing before approval
📌 Ensures certification success and long product lifetime.
Step 3: Incoming Quality Control & SMT Process
All materials go through:
- IQC electrical and dimensional testing
- LCR component verification
- ESD-safe warehouse storage
Then PCB assembly includes:
1️⃣ SMT high-speed placement
2️⃣ Automated optical inspection (AOI)
3️⃣ Wave soldering (DIP)
4️⃣ Ultrasound cleaning & coating (optional for medical)
5️⃣ Housing assembly with safety insulation
Step 4: 100% Functional Testing
Each unit undergoes:
- Hi-pot pre-check
- Output voltage/current validation
- Short-circuit protection test
- Dynamic load response testing
Step 5: Aging Test in High-Temperature Chambers
All power supplies run at 45–70°C for 2–8 hours (based on rating).
Purpose:
- Detect early-stage failures
- Verify thermal endurance
- Confirm stability in real-world operation
Step 6: Safety & Reliability Testing
After aging, products undergo:
- Hi-pot test (3kV typical)
- Grounding resistance
- Leakage current
- Overload / Overvoltage
- Inrush current
- Insulation thickness measurement
- EMC pre-compliance check
📌 Compliance with IEC 62368-1 / IEC 60601-1 / FCC / CE…
📷 Image alt:
Electrical safety verification for power adapters at XJK Power
Step 7: Packaging, Labeling & Final QC
Before packing:
- Visual inspection (appearance)
- Label and rating verification
- Barcode traceability
- Carton drop testing (for shipment safety)
Packaging supports:
✔ Retail ready
✔ Custom branding
✔ Eco-friendly materials
🔍 Quality Management System We Follow
- ISO 9001 certified
- Full traceability from material lot → end product
- Strict AQL standard for sampling
- Safety stock and reliability review for long-term projects
Our mission is to deliver safe, durable, and customized power solutions — every time.
📩 Contact our team for OEM/ODM support.
