Xinda Delivers Precision 4-Layer Rigid-Flex PCB for a Renowned Hearing Aid Client

Meta description: Xinda PCB showcases advanced medical rigid-flex & FPC manufacturing capability with ultra-thin 

4-layer rigid-flex board for hearing aid application, featuring ENIG and micro via plugging.

Xinda PCB, your reliable OEM PCB & PCBA manufacturer, has established technical cooperation with a renowned hearing aid manufacturer, supplying high-precision 4-layer rigid-flex PCB for their hearing device development.

Hearing aids are high-demanding medical wearable devices. They require ultra-thin stack-up, stable bending performance, excellent signal integrity and consistent long-term reliability within an extremely compact housing. After thorough technical communication and evaluation, the customer released this 4-layer rigid-flex PCB project to our team.

Key specifications of this hearing aid rigid-flex PCB

Layer count: 4-layer rigid-flex

Overall board thickness: 0.45 mm ~ 0.55 mm

FR-4 rigid section thickness: 0.5 mm

Flexible section thickness: 0.18 mm

Stiffener area thickness: 0.23 mm

Copper thickness: 18 µm for both rigid and flex layers

Surface finish: ENIG (Immersion Gold)

Via plugging required: micro via plugging, via size 0.11×0.3 mm

This project fully validates Xinda’s manufacturing capacity for medical-grade ultra-thin FPC and rigid-flex circuits. We are capable of handling complex multilayer medical PCB projects with tight tolerance control, precision microvia plugging and reliable rigid-flex bonding.

Beyond hearing aid FPC and rigid-flex boards, we support OEM fabrication for a wide range of medical electronics, including diagnostic devices, portable medical modules and other high-reliability medical circuits. Our team offers stack-up review, DFM check, prototype and volume production to support medical customers worldwide.

Contact us today to discuss your custom FPC, rigid-flex and multilayer medical PCB requirements.