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10PCS Cdsenet TX433-FPC-3208 433MHz FPC Built-in Antenna 2dBi IPEX-1 Compact Size
10PCS Cdsenet TX433-FPC-3208 433MHz FPC Built-in Antenna 2dBi IPEX-1 Compact Size
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SKU:10*TX433-FPC-3208
Product Overview
The TX433-FPC-3208 is a 433 MHz built-in FPC (Flexible Printed Circuit) antenna designed for compact sub-1 GHz IoT integration. With a 2.0 dBi peak gain, VSWR ≤ 1.5, and an ultra-slim 32 × 8 mm footprint, it delivers stable omnidirectional coverage for LoRa, FSK, and OOK wireless modules. The gold-plated IPEX-1 (U.FL) connector and 1.13 mm coaxial cable minimize insertion loss, making it suitable for industrial telemetry, smart home security, agricultural sensors, and remote control systems. Updated March 2026.
Technical Specifications
| Parameter | Technical Value |
|---|---|
| Frequency Range | 423 – 443 MHz (433 MHz Center, Sub-1 GHz ISM Band) |
| Peak Gain | 2.0 dBi |
| VSWR | ≤ 1.5 (Excellent Impedance Matching) |
| Impedance | 50 Ω |
| Connector Type | IPEX-1 / IPX-I (U.FL Compatible), Gold-Plated |
| Cable Type | 1.13 mm Coaxial (Low-Loss) |
| Antenna Size | 32 × 8 mm (FPC Substrate) |
| Antenna Material | FPC (Flexible Printed Circuit) |
| Mounting | Adhesive Backing (Non-Metallic Surfaces) |
| Certification | CE / RoHS Compliant |
| Updated | March 2026 |
Product Details
Ultra-Slim FPC Radiator — 32 × 8 mm Bend-to-Fit
The TX433-FPC-3208 uses a precision-tuned flexible printed circuit radiator measuring just 32 × 8 mm. Its ultra-slim profile allows it to be curved or adhered to the inner surfaces of non-metallic device housings — plastic, glass, or ceramic — without requiring additional mounting brackets. The adhesive backing enables fast, tool-free installation in high-volume production environments.
Gold-Plated IPEX-1 Connector — Minimal Insertion Loss
The antenna is terminated with a gold-plated IPEX-1 (MHF1/U.FL) connector via a 1.13 mm low-loss coaxial cable. This connector type is directly compatible with mainstream 433 MHz wireless modules including EBYTE E32, E22, and SX1278-based designs. The gold plating ensures corrosion resistance and stable contact impedance at 50 Ω over extended operational cycles.
Professional Test Report
Measured with precision RF vector network analyzers. VSWR verified at ≤ 1.5 at center frequency 433 MHz, confirming stable impedance matching and low reflected power across the 423–443 MHz operating band.
Ideal Applications
Industrial Wireless Telemetry
Remote data acquisition units, pipeline monitoring nodes, and industrial control systems using 433 MHz FSK or LoRa protocols for long-range, low-power communication.
Smart Home Security
Wireless alarm panels, door/window sensors, smart meters, and 433 MHz RF remote control receivers integrated into compact plastic enclosures.
Agricultural IoT Sensors
Soil moisture monitors, weather stations, and greenhouse climate controllers using 433 MHz LoRa for wide-area, low-power sensor networks in outdoor environments.
Automotive & Fleet Tracking
Asset tracking units, vehicle telematics modules, and keyless entry systems requiring a low-profile internal antenna with reliable 433 MHz sub-GHz coverage.
Resources
📄 Download Datasheet (PDF)FAQ
Q: Is the TX433-FPC-3208 compatible with EBYTE E32, E22, and SX1278-based LoRa modules?
A: Yes. The IPEX-1 (MHF1/U.FL) connector is the standard interface on most 433 MHz sub-GHz wireless modules, including EBYTE E32-433T20D, E22-400T22S, and SX1278-based designs. The antenna operates at 50 Ω impedance and covers 423–443 MHz, matching the operating band of these modules without additional impedance matching components.
Q: Can this antenna be mounted on or near metal surfaces?
A: No. FPC antennas must be adhered to non-conductive surfaces such as plastic, glass, or ceramic. Proximity to metal will detune the antenna element, shifting the resonant frequency away from 433 MHz and significantly degrading VSWR and gain. For metal enclosures, an external whip or magnetic-mount antenna with appropriate ground plane is recommended instead.
Q: What is the operating temperature range and environmental durability?
A: The TX433-FPC-3208 is rated for operation from −40°C to +85°C, covering both indoor consumer electronics and outdoor industrial deployments. The FPC substrate and adhesive backing are resistant to humidity and minor mechanical vibration. For applications with direct moisture or dust exposure, ensure the host device provides adequate IP-rated enclosure protection.
Q: What is the effective communication range with this antenna?
A: Range depends on the wireless module's transmit power, protocol, and environment. With a typical 20 dBm LoRa module (e.g., EBYTE E32-433T20D) in open-field line-of-sight conditions, communication ranges of 1–3 km are achievable. In urban or indoor environments with obstructions, expect 100–500 m. The 2.0 dBi gain of this antenna provides a measurable improvement over 0 dBi reference antennas.
Q: Does this antenna meet CE and RoHS compliance requirements?
A: Yes. The TX433-FPC-3208 is CE marked and RoHS compliant, meeting EU electromagnetic compatibility (EMC) directives and hazardous substance restrictions. It is suitable for integration into end products targeting European markets. Compliance documentation is available via the datasheet download link above.