{"product_id":"tx433-fpc-4516","title":"10PCS Cdsenet TX433-FPC-4516 433MHz FPC Internal Antenna 2.0dBi IoT Lightweight","description":"\u003cdiv style=\"font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; color: #333; line-height: 1.6; max-width: 1000px; margin: 0 auto; padding: 10px;\"\u003e\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch2 style=\"font-size: 24px; color: #111; border-bottom: 2px solid #eee; padding-bottom: 10px; margin-bottom: 20px;\"\u003eProduct Overview\u003c\/h2\u003e\n\n\u003cp style=\"font-size: 16px; color: #444; margin-bottom: 20px;\"\u003eThe \u003cstrong\u003eTX433-FPC-4516\u003c\/strong\u003e is a 433MHz FPC (Flexible Printed Circuit) internal antenna designed for space-constrained IoT wireless terminals. It delivers a measured \u003cstrong\u003epeak gain of 2.0 dBi\u003c\/strong\u003e and a typical VSWR of \u003cstrong\u003e1.21 at 433MHz\u003c\/strong\u003e, covering the 423–443MHz sub-1GHz band. The compact \u003cstrong\u003e45 × 16mm\u003c\/strong\u003e form factor with a 120mm IPX-I feeder cable enables direct integration into LoRa, FSK, and OOK-based modules and devices. Updated March 2026.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"TX433-FPC-4516 433MHz FPC internal IoT antenna front view\" cke-id=\"img32\" decoding=\"async\" loading=\"lazy\" referrerpolicy=\"no-referrer\" src=\"https:\/\/www.cdebyte.com\/Uploadfiles\/Picture\/2021-3-26\/20213261741163484.jpg\" style=\"display: block; margin: 0 auto; max-width: 100%; height: auto; border-radius: 8px;\"\u003e\u003c\/div\u003e\u003c\/section\u003e\n\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch2 style=\"font-size: 22px; color: #111; border-bottom: 2px solid #eee; padding-bottom: 10px; margin-bottom: 15px;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; text-align: left; border: 1px solid #ececec;\"\u003e\n\t\u003cthead\u003e\n\t\t\u003ctr style=\"background-color: #f9f9f9; border-bottom: 2px solid #eee;\"\u003e\n\t\t\t\u003cth style=\"padding: 12px; font-weight: bold; color: #333;\"\u003eParameter\u003c\/th\u003e\n\t\t\t\u003cth style=\"padding: 12px; font-weight: bold; color: #333;\"\u003eValue\u003c\/th\u003e\n\t\t\u003c\/tr\u003e\n\t\u003c\/thead\u003e\n\t\u003ctbody\u003e\n\t\t\u003ctr style=\"border-bottom: 1px solid #f0f0f0;\"\u003e\n\t\t\t\u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eFrequency Range\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding: 12px;\"\u003e423 – 443 MHz (Center: 433 MHz)\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr style=\"border-bottom: 1px solid #f0f0f0; background-color: #fafafa;\"\u003e\n\t\t\t\u003ctd style=\"padding: 12px; font-weight: 600;\"\u003ePeak Gain\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding: 12px;\"\u003e2.0 dBi\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr style=\"border-bottom: 1px solid #f0f0f0;\"\u003e\n\t\t\t\u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eVSWR\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding: 12px; font-weight: bold; color: #c0392b;\"\u003e≤ 1.5 (Typ. 1.21 @ 433 MHz)\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr style=\"border-bottom: 1px solid #f0f0f0; background-color: #fafafa;\"\u003e\n\t\t\t\u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eImpedance\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding: 12px;\"\u003e50 Ω\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr style=\"border-bottom: 1px solid #f0f0f0;\"\u003e\n\t\t\t\u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eConnector Type\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding: 12px;\"\u003eIPX-I (IPEX Gen 1 \/ U.FL compatible)\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr style=\"border-bottom: 1px solid #f0f0f0; background-color: #fafafa;\"\u003e\n\t\t\t\u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eCable Length\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding: 12px;\"\u003e120 mm (1.13mm coaxial)\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr style=\"border-bottom: 1px solid #f0f0f0;\"\u003e\n\t\t\t\u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eAntenna Dimensions\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding: 12px;\"\u003e45 × 16 mm\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr style=\"border-bottom: 1px solid #f0f0f0; background-color: #fafafa;\"\u003e\n\t\t\t\u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eRadiator Material\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding: 12px;\"\u003eFPC (Flexible Printed Circuit)\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr style=\"border-bottom: 1px solid #f0f0f0;\"\u003e\n\t\t\t\u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eMax Input Power\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding: 12px;\"\u003e50 W\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr style=\"border-bottom: 1px solid #f0f0f0; background-color: #fafafa;\"\u003e\n\t\t\t\u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eOperating Temperature\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding: 12px;\"\u003e-40 °C to +85 °C\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr style=\"border-bottom: 1px solid #f0f0f0;\"\u003e\n\t\t\t\u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eCompliance\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding: 12px;\"\u003eRoHS\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr style=\"background-color: #fafafa;\"\u003e\n\t\t\t\u003ctd style=\"padding: 12px; font-weight: 600;\"\u003eLast Updated\u003c\/td\u003e\n\t\t\t\u003ctd style=\"padding: 12px;\"\u003eMarch 2026\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch2 style=\"font-size: 22px; color: #111; border-bottom: 2px solid #eee; padding-bottom: 10px; margin-bottom: 25px;\"\u003eProduct Details\u003c\/h2\u003e\n\n\u003cdiv style=\"background: #ffffff; border: 1px solid #eee; border-radius: 8px; padding: 20px; margin-bottom: 20px;\"\u003e\n\u003ch3 style=\"font-size: 18px; color: #111; margin: 0 0 10px 0;\"\u003eFlexible FPC Radiator — Compact 45 × 16mm Footprint\u003c\/h3\u003e\n\n\u003cp style=\"font-size: 14px; color: #666; margin-bottom: 15px;\"\u003eThe precision-etched FPC substrate measures just 45 × 16mm, making it one of the smallest 433MHz internal antennas in its gain class. A 3M adhesive backing allows tool-free mounting on the inner wall of any non-metallic (ABS, PC, TPEE) enclosure. The flexible body withstands repeated bending without RF performance degradation, supporting high-volume automated assembly.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"TX433-FPC-4516 flexible FPC substrate 45x16mm compact form factor for IoT enclosure\" cke-id=\"img33\" decoding=\"async\" loading=\"lazy\" referrerpolicy=\"no-referrer\" src=\"https:\/\/www.cdebyte.com\/Uploadfiles\/Picture\/2021-3-26\/20213261741168124.jpg\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto; border-radius: 4px;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background: #ffffff; border: 1px solid #eee; border-radius: 8px; padding: 20px;\"\u003e\n\u003ch3 style=\"font-size: 18px; color: #111; margin: 0 0 10px 0;\"\u003eGold-Plated IPX-I Connector with 120mm 1.13mm Coaxial Feeder\u003c\/h3\u003e\n\n\u003cp style=\"font-size: 14px; color: #666; margin-bottom: 15px;\"\u003eThe gold-plated IPX-I (U.FL-compatible) connector ensures low-resistance mating with Ebyte E32, E22-400, and third-party 433MHz LoRa\/FSK modules. The 120mm 1.13mm-diameter coaxial feeder minimizes insertion loss while providing sufficient routing flexibility inside compact enclosures. No soldering required — press-fit installation in under 10 seconds.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"TX433-FPC-4516 gold-plated IPX-I connector and 120mm 1.13mm coaxial feeder cable\" cke-id=\"img34\" decoding=\"async\" loading=\"lazy\" referrerpolicy=\"no-referrer\" src=\"https:\/\/www.cdebyte.com\/Uploadfiles\/Picture\/2021-3-26\/20213261741164802.jpg\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto; border-radius: 4px;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch2 style=\"font-size: 22px; color: #111; border-bottom: 2px solid #eee; padding-bottom: 10px; margin-bottom: 20px;\"\u003eProfessional Test Report\u003c\/h2\u003e\n\n\u003cdiv style=\"background-color: #f8fbff; border: 1px solid #e1ecf7; border-radius: 8px; padding: 20px; text-align: center;\"\u003e\n\u003cp style=\"font-size: 15px; color: #1e3a8a; margin-bottom: 15px;\"\u003eMeasured with a vector network analyzer (Agilent E5071C equivalent): VSWR = \u003cstrong\u003e1.21 @ 433 MHz\u003c\/strong\u003e, confirming ≤1.5 across the full 423–443 MHz operating band. Return loss ≥ 18 dB at center frequency.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"TX433-FPC-4516 VSWR test chart 433MHz measured with Agilent network analyzer\" cke-id=\"img35\" decoding=\"async\" loading=\"lazy\" referrerpolicy=\"no-referrer\" src=\"https:\/\/www.cdebyte.com\/Uploadfiles\/Picture\/2021-3-26\/20213261741162464.jpg\" style=\"max-width: 100%; height: auto; border-radius: 4px;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch2 style=\"font-size: 22px; color: #111; border-bottom: 2px solid #eee; padding-bottom: 10px; margin-bottom: 25px;\"\u003eIdeal Applications\u003c\/h2\u003e\n\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 20px;\"\u003e\n\u003cdiv style=\"flex: 1 1 220px; min-width: 200px; border: 1px solid #f0f0f0; border-radius: 10px; padding: 15px; background: #fff;\"\u003e\n\u003ch3 style=\"font-size: 16px; margin: 0 0 8px 0; color: #0056b3;\"\u003eIndustrial IoT \u0026amp; LoRa\u003c\/h3\u003e\n\n\u003cp style=\"font-size: 14px; color: #666; margin: 0;\"\u003eLong-range data acquisition nodes, pipeline monitoring, and factory automation using 433MHz LoRa or FSK modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"flex: 1 1 220px; min-width: 200px; border: 1px solid #f0f0f0; border-radius: 10px; padding: 15px; background: #fff;\"\u003e\n\u003ch3 style=\"font-size: 16px; margin: 0 0 8px 0; color: #0056b3;\"\u003eSmart Utilities \u0026amp; Metering\u003c\/h3\u003e\n\n\u003cp style=\"font-size: 14px; color: #666; margin: 0;\"\u003eWireless water, gas, and electricity meter reading systems requiring compact internal antennas with reliable sub-1GHz coverage.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"flex: 1 1 220px; min-width: 200px; border: 1px solid #f0f0f0; border-radius: 10px; padding: 15px; background: #fff;\"\u003e\n\u003ch3 style=\"font-size: 16px; margin: 0 0 8px 0; color: #0056b3;\"\u003eSmart Home \u0026amp; Security\u003c\/h3\u003e\n\n\u003cp style=\"font-size: 14px; color: #666; margin: 0;\"\u003eWireless alarm panels, remote keyless entry, and 433MHz RF remote control receivers in residential and commercial installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"flex: 1 1 220px; min-width: 200px; border: 1px solid #f0f0f0; border-radius: 10px; padding: 15px; background: #fff;\"\u003e\n\u003ch3 style=\"font-size: 16px; margin: 0 0 8px 0; color: #0056b3;\"\u003eAgricultural Sensors\u003c\/h3\u003e\n\n\u003cp style=\"font-size: 14px; color: #666; margin: 0;\"\u003eSoil moisture, temperature, and environmental monitoring nodes deployed across wide field areas with LoRa long-range connectivity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection style=\"margin-bottom: 40px;\"\u003e\n\u003ch2 style=\"font-size: 22px; color: #111; border-bottom: 2px solid #eee; padding-bottom: 10px; margin-bottom: 25px;\"\u003eResources\u003c\/h2\u003e\n\u003ca href=\"http:\/\/www.cdebyte.com\/pdf-down.aspx?id=1259\" rel=\"noopener noreferrer\" style=\"display: inline-block; padding: 12px 25px; background-color: #0056b3; color: #fff; text-decoration: none; border-radius: 6px; font-weight: 600; font-size: 15px;\" target=\"_blank\"\u003e📄 Download Datasheet (PDF)\u003c\/a\u003e\u003c\/section\u003e\n\n\u003csection style=\"border-top: 1px solid #eee; padding-top: 30px;\"\u003e\n\u003ch2 style=\"font-size: 20px; color: #111; margin-bottom: 20px;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdiv style=\"margin-bottom: 20px; padding: 15px; background: #fafafa; border-radius: 8px;\"\u003e\n\u003cp style=\"font-weight: bold; margin-bottom: 6px;\"\u003eQ: Is the TX433-FPC-4516 compatible with LoRa modules such as Ebyte E32-433T20D?\u003c\/p\u003e\n\n\u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: Yes. The TX433-FPC-4516 uses a standard IPX-I (U.FL) connector and is electrically matched to 50Ω systems at 433MHz. It is directly compatible with Ebyte E32, E22-400, and any third-party LoRa, FSK, or OOK module with an IPX-I socket in the 423–443MHz band. Confirm your module's connector generation (Gen 1 \/ IPX-I) before ordering, as IPX-4 (MHF4) connectors are not interchangeable.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 20px; padding: 15px; background: #fafafa; border-radius: 8px;\"\u003e\n\u003cp style=\"font-weight: bold; margin-bottom: 6px;\"\u003eQ: Can this antenna be installed inside a metal enclosure?\u003c\/p\u003e\n\n\u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: No. Placing any FPC or PCB antenna inside a metallic housing causes severe signal attenuation and VSWR degradation due to RF shielding. The TX433-FPC-4516 must be mounted on the inner surface of a non-metallic (ABS, PC, or TPEE) enclosure. Maintain a minimum clearance of 5mm from any metal component to preserve the rated 2.0 dBi gain and ≤1.5 VSWR.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 20px; padding: 15px; background: #fafafa; border-radius: 8px;\"\u003e\n\u003cp style=\"font-weight: bold; margin-bottom: 6px;\"\u003eQ: Does antenna orientation affect communication range?\u003c\/p\u003e\n\n\u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: Yes. The TX433-FPC-4516 has a directional radiation pattern at 433MHz. Incorrect placement orientation can reduce effective range by 20–40% compared to optimal positioning. Refer to the radiation pattern diagram in the datasheet (PDF above) for recommended mounting orientation relative to the target communication direction.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 20px; padding: 15px; background: #fafafa; border-radius: 8px;\"\u003e\n\u003cp style=\"font-weight: bold; margin-bottom: 6px;\"\u003eQ: What is the operating temperature range and environmental durability?\u003c\/p\u003e\n\n\u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: The TX433-FPC-4516 is rated for -40°C to +85°C, suitable for industrial and outdoor deployment. The FPC substrate is RoHS-compliant and resistant to humidity under standard operating conditions. For harsh outdoor environments, ensure the host enclosure provides adequate IP-rated sealing; the antenna itself is not independently IP-rated.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"padding: 15px; background: #fafafa; border-radius: 8px;\"\u003e\n\u003cp style=\"font-weight: bold; margin-bottom: 6px;\"\u003eQ: How do I mount the TX433-FPC-4516 inside my device?\u003c\/p\u003e\n\n\u003cp style=\"color: #555; margin: 0; font-size: 14px;\"\u003eA: Peel the 3M adhesive backing and press the FPC flat against the inner wall of a non-metallic enclosure. Route the 120mm coaxial feeder to your module's IPX-I socket and press-fit the connector until it clicks. Avoid bending the feeder cable at a radius under 5mm. No soldering is required. Installation takes under 10 seconds and is compatible with automated production line assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"cdsenet","offers":[{"title":"Default Title","offer_id":45204911095910,"sku":"10*TX433-FPC-4516","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0702\/9918\/9350\/files\/TX433-FPC-4516-_3_800x800_v2.jpg?v=1773474442","url":"https:\/\/cdsenet.store\/products\/tx433-fpc-4516","provider":"CDSENET, Built for the Wireless World","version":"1.0","type":"link"}