Overview
Superb Automation manufactures medical-grade PCBA for Bluetooth-enabled blood glucose meters — compact, battery-powered diagnostic devices that combine precision analog measurement with BLE wireless connectivity. The assembly integrates a high-resolution analog front-end for electrochemical glucose sensing, a low-power microcontroller for data processing and storage, a Bluetooth Low Energy module for smartphone synchronization, and a power management circuit optimized for coin-cell or rechargeable battery operation. All assembly is performed under ISO 13485 quality management and IPC-A-610 Class 3 acceptance criteria. We operate on a strict build-to-print model — the customer provides Gerber files, BOM, and assembly drawings; we handle component procurement, SMT assembly, conformal coating where specified, and functional test.
PCBA Specifications — Blood Glucose Meter
| Device Type | Portable blood glucose meter with Bluetooth connectivity |
| Measurement Method | Electrochemical — enzyme-based test strip interface |
| Wireless | Bluetooth Low Energy (BLE 4.2 / 5.0) |
| MCU | Low-power ARM Cortex-M series — customer-specified |
| Analog Front-End | 16–24 bit ADC, transimpedance amplifier for test strip signal conditioning |
| Memory | On-board flash for 100+ reading groups with timestamp |
| Power | CR2032 coin cell or Li-Po rechargeable — PMIC with ultra-low quiescent current |
| Display Interface | Segment LCD or OLED — driver on PCB |
| PCB Layers | 4-layer — signal / ground / power / signal |
| PCB Thickness | 1.0–1.6 mm — compact form factor for handheld device |
| Surface Finish | ENIG — required for test strip connector contact reliability |
| Assembly Standard | IPC-A-610 Class 3 — medical electronics |
| Quality System | ISO 13485 |
| Service Model | Build-to-print — Gerber + BOM + assembly drawings in, tested PCBA out |
Key Assembly Capabilities for Medical Wearables and Diagnostics
Precision Analog Signal Chain Assembly
Glucose measurement relies on sub-microampere current sensing from the test strip electrochemical reaction. The analog front-end — transimpedance amplifier, ADC, and reference voltage — must be assembled with minimal leakage current and noise coupling. Our SMT process for precision analog boards includes: placement of low-leakage passives with controlled reflow profiles to avoid thermal drift, isolation of analog ground from digital ground per the customer's layout, and post-assembly leakage current verification at specified test points.
BLE Wireless Module Integration
Bluetooth Low Energy modules — whether discrete SoC or pre-certified modules — require clean power delivery and antenna keep-out zone compliance. Our assembly process verifies: decoupling capacitor placement within 2 mm of the BLE IC power pins, antenna matching network components placed per the customer's RF layout specification, and no copper or component encroachment in the antenna clearance zone. For pre-certified modules, the module manufacturer's land pattern and solder paste stencil recommendations are followed exactly to preserve modular certification validity.
Low-Power PMIC and Battery Interface
Battery-powered medical devices demand ultra-low standby current — typically under 5 µA — to achieve months of operation from a single coin cell. Our SMT process handles the small-footprint PMIC packages and battery connectors common in portable medical designs. Post-assembly current consumption is measured in active, sleep, and deep-sleep modes per the customer's test specification to confirm no assembly-induced leakage paths.
Conformal Coating for Medical Devices
Handheld medical devices are exposed to humidity, body contact, and occasional liquid ingress from test strip handling. Conformal coating — acrylic, silicone, or parylene per customer specification — is applied after assembly and test. Masking is applied to connectors, test points, and battery contacts before coating. Coating thickness is verified at specified measurement points.
Quality and Traceability for Medical Electronics
ISO 13485 quality management: All medical device PCBA orders are processed through our ISO 13485 certified workflow — from incoming component inspection through final functional test. Lot traceability is maintained from component reel to assembled board serial number.
IPC-A-610 Class 3 acceptance: Every solder joint is inspected to Class 3 criteria — the standard for high-reliability electronics where failure could impact patient safety. AOI inspects 100% of solder joints; AXI verifies BGA and QFN hidden joints on a sampling basis.
Component traceability: All components are lot-tracked from receiving through placement. In the event of a component-level field failure, the affected lot can be identified and isolated without recalling unaffected production batches.
Functional test per customer specification: A custom functional test fixture — developed from the customer's test protocol — verifies glucose measurement accuracy (using precision resistor networks to simulate test strip signals), BLE connectivity, display function, and current consumption on every assembled board before shipment.
Why Superb Automation for Medical Device PCBA
ISO 13485 certified: Medical device assembly under a quality management system purpose-built for healthcare electronics — not adapted from general industrial assembly.
Class 3 soldering as standard: Medical PCBA orders are assembled and inspected to IPC-A-610 Class 3 — no upcharge, no separate qualification required.
Full component traceability: Lot-level tracking from reel to board serial number. Audit-ready traceability reports included with every production batch.
Build-to-print precision: Customer design, BOM, and test specification drive the process. No substitutions without approval. No unauthorized process changes.
Low-power expertise: Battery-operated medical devices require nanoamp-level standby management. Our assembly and test processes are designed around the handling requirements of ultra-low-power analog and mixed-signal circuits.
Request Quote — ISO 13485 Medical PCBA, Build-to-Print from Your Gerber + BOM, IPC-A-610 Class 3, Full Traceability
