Case Studio
Structured Project Case Studies
Each case shows how we approach real OEM integration problems — from initial requirement through custom development and RF debugging to production delivery.
Compact NFC Wireless Charging Module for Sealed Enclosure
A medical device startup needed a wireless charging solution for a fully sealed handheld diagnostic tool — IP68 rating required.
Challenge
- Fully sealed IP68 enclosure — no connectors
- Target: charge 40 mAh Li-Po in < 2 hours
- Coil must fit in 15×15 mm area
- Thermal limit: < 5°C rise during charging
Custom Development
- Custom multi-layer PCB coil: 14×14 mm
- NFC WLC power path with LDO regulation
- Charge management IC with temperature monitoring
- Base station transmitter reference design
RF & Functional Testing
- Power transfer efficiency: 38% at 5 mm gap
- Charge time: 95 minutes (40 mAh)
- Thermal rise: 4.2°C max (within spec)
- IP68 seal integrity maintained after 500 cycles
Production Result
- 1,200 units delivered for pilot production
- Passed medical device EMC pre-compliance
- Full production ramp planned at 5K units/month
NFC Latch Control for Equipment Access Management
A manufacturer of industrial cabinets needed a secure, battery-free access control module that could authorize users via NFC and actuate an electronic latch.
Challenge
- Metal enclosure degrades NFC field
- Space: only 38×22 mm available
- No battery — must harvest from NFC
- Must integrate with existing latch mechanism
Custom Development
- Custom antenna for metal-adjacent operation
- NTAG-based secure credential with energy harvesting
- Compact PCBA layout: 36×20 mm
- Latch driver circuit with inrush protection
RF & Functional Testing
- Read distance: 25 mm through enclosure
- Impedance matched for metal detuning
- 10,000-cycle latch actuation test
- ESD and temperature cycling passed
Production Result
- 5,000 units delivered in first batch
- Field failure rate < 0.3%
- Second-generation version in development
NFC E-Paper Equipment Status Display
A logistics equipment provider needed a maintenance-free status label that could display equipment state and be updated wirelessly via NFC.
Challenge
- No power source available on equipment
- Must survive industrial environment
- Display must remain visible without power
- Multiple states: idle / in-use / maintenance / error
Custom Development
- E-ink display driven by NFC energy harvesting
- Custom PCB with NFC frontend + display driver
- 4-state display logic with icon + text layout
- IP65-rated enclosure design support
RF & Functional Testing
- Read distance: 30 mm through enclosure
- Display refresh: < 3 seconds per update
- 100,000 refresh cycles endurance test
- Temperature range: -20°C to +60°C verified
Production Result
- 3,200 units deployed across 8 facilities
- Zero battery replacements
- Customer expanding to additional equipment types
Electronic Tags — NTA1/NTA2 Series
NTA1 series uses FM11NT081D chip with ECC digital signature and multi-layer anti-counterfeiting. NTA2 series uses FM11RF08 chip, supporting PVC card, epoxy glob, custom shapes and more.
Platforms
- NTA1: FM11NT081D + ECC digital signature
- NTA2: FM11RF08 dual platform
- 106Kbit/8Kbit multi-spec storage
- Triple anti-counterfeiting
Key Features
- I2C + NFC dual interface
- 7-byte UID + CC OTP tear-resistant
- Storage read-only lock
- 8 standard sizes, PVC/glob/custom/resin/paper packages
Applications
- Electronic shelf labels & asset tags
- Access cards & student IDs
- Bluetooth pairing & WiFi parameters
- Device identification & production tracking
Value Propositions
- ECC anti-counterfeiting
- 106Kbit large capacity
- 100K write cycles
- Flexible packaging
