10PCS Cdsenet TX433-FPC-4810 433MHz FPC Antenna 2.5 dBi IPEX-1 48×10mm IoT

Self-Adhesive FPC Substrate — Tool-Free Installation

The FPC substrate features a pressure-sensitive adhesive backing, allowing direct attachment to the inner wall of plastic enclosures without screws or brackets. The flexible body (thickness < 0.3 mm) conforms to curved surfaces and tolerates repeated bending with a minimum radius of 5 mm, making it ideal for compact IoT sensor housings and handheld remote controls where rigid PCB antennas cannot fit.

RF1.13 Coaxial Feeder with IPEX-1 Connector — Low-Loss Signal Path

The 73 mm RF1.13 coaxial cable introduces < 0.3 dB insertion loss at 433 MHz, preserving the antenna’s 2.5 dBi gain budget. The gold-plated IPEX-1 (U.FL) connector is compatible with 433 MHz modules including Semtech SX1276/SX1278, EBYTE E32/E22 series, and Hope RF RFM69/RFM96, requiring no impedance matching network when the system impedance is 50 Ω.

Q: Which 433 MHz wireless modules is the TX433-FPC-4810 compatible with?

A: The TX433-FPC-4810 uses a standard IPEX-1 (U.FL) connector with 50 Ω impedance, making it directly compatible with Semtech SX1276/SX1278-based LoRa modules (e.g., EBYTE E32-433T, Hope RF RFM96W), Silicon Labs EFR32 Sub-GHz modules, and any 433 MHz transceiver with a U.FL port. No external matching network is required.

Q: Can I trim or shorten the FPC antenna body to fit a smaller enclosure?

A: No. The 48 mm radiating element length is tuned to a quarter-wavelength resonance at 433 MHz (λ/4 ≈ 173 mm in free space, reduced by the FPC substrate’s effective permittivity). Trimming the element will shift the resonant frequency upward and increase VSWR beyond 2.0, degrading range and efficiency. If a shorter form factor is required, contact our engineering team for a custom-tuned variant.

Q: Where should the antenna be positioned inside the device enclosure?

A: Mount the FPC element on the inner surface of a non-metallic (ABS, PC, or nylon) enclosure wall, keeping at least 5 mm clearance from PCB ground planes, batteries, and metal shielding cans. Avoid routing the feeder cable parallel to the antenna element, as this can cause coupling and VSWR degradation. Orienting the antenna vertically maximizes omnidirectional coverage in the horizontal plane.

Q: What is the operating temperature range and environmental suitability?

A: The TX433-FPC-4810 is rated for −40 °C to +85 °C, covering outdoor agricultural sensors, industrial control panels, and automotive interior applications. The FPC substrate is RoHS-compliant. For high-humidity or outdoor deployments, apply conformal coating over the FPC element or mount it inside a sealed IP-rated enclosure to prevent moisture ingress.

Q: Is the 73 mm feeder cable length customizable for OEM production?

A: Yes. The standard feeder is 73 mm RF1.13 coaxial cable. Custom lengths are available for OEM orders — shorter cables reduce insertion loss (< 0.3 dB at 433 MHz for 73 mm), while longer cables up to ~200 mm add approximately 0.2–0.4 dB additional loss. Contact our sales team with your target cable length, connector type, and order quantity for a custom quotation.