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A compact, high-performance 5 cm short whip antenna engineered for indoor routers, IoT gateways, LoRa modules, and wireless communication devices operating at 433 MHz or 868 MHz. The SMA Male right-angle connector allows low-profile, flush mounting on PCBs, enclosures, and router housings without protruding cable assemblies — saving valuable space in compact device designs.
At just 3 dBi gain with a broad omnidirectional radiation pattern, this antenna delivers reliable indoor coverage for short-to-medium range wireless links. Factory-direct supply ensures consistent quality, competitive pricing, and rapid lead times for OEM/ODM projects.
Parameter | Specification | ||
Frequency | 433 MHz / 868 MHz (selectable or dual-band) | ||
Gain | 3 dBi | ||
VSWR | ≤ 1.5 | ||
Impedance | 50 Ω | ||
Polarization | Vertical | ||
Radiation Pattern | Omnidirectional (azimuth) | ||
Max Input Power | 10 W | ||
Connector | SMA Male Right Angle (90°) | ||
Antenna Length | 5 cm (50 mm) | ||
Antenna Diameter | Approx. 4–5 mm | ||
Element Type | Spring / Whip / PCB trace (configurable) | ||
Mounting | SMA panel mount / PCB solder / Snap-in | ||
Operating Temperature | −40 °C to +85 °C | ||
Humidity | 0–95 % RH (non-condensing) | ||
Weight | Approx. 5–8 g | ||
Color | Black / White / Custom | ||
RoHS / REACH | Compliant | ||
● Ultra-Compact 5 cm Profile — Ideal for space-constrained router housings, sensor enclosures, and PCB-mounted applications where a full-length antenna is impractical
● SMA Male Right Angle (90°) — Flush-mount design eliminates protruding connectors, enabling clean device aesthetics and easier enclosure integration
● Dual Frequency Options — Available tuned for 433 MHz (EU/Asia ISM) or 868 MHz (EU LoRa) to match your specific protocol and regional requirements
● Omnidirectional Indoor Coverage — 360° azimuth pattern provides uniform signal distribution in rooms, offices, and industrial cabinets without aiming
● Lightweight & Low-Profile — Under 8 g weight minimizes mechanical stress on SMA connectors and PCB pads
●
Factory-Direct OEM Supply — Consistent quality, bulk pricing, and custom tuning available for high-volume router and IoT device manufacturers
● RoHS / REACH Compliant — Meets environmental regulations for global electronics distribution
Application | Description | ||
Indoor WiFi / IoT Routers | External antenna port upgrade or replacement for compact routers and gateways | ||
LoRa / LoRaWAN Modules | 868 MHz antenna for indoor LoRa concentrators and sensor nodes | ||
433 MHz Remote Control | Garage door openers, wireless switches, and home automation receivers | ||
Smart Home Hubs | Zigbee / Z-Wave / sub-GHz hub antenna in compact form factors | ||
Industrial Sensor Gateways | DIN-rail mounted gateways in control cabinets and automation panels | ||
Wireless Metering (AMI) | Indoor receiver antenna for gas/water/electricity smart meters | ||
Asset Tracking Receivers | Indoor base stations for 433/868 MHz tracking tags | ||
Medical & Lab Devices | Compact wireless telemetry in space-limited instruments | ||
POS / Retail Terminals | Sub-GHz wireless communication antenna in payment and inventory devices | ||
DIY / Prototyping | Development board antenna for Arduino, Raspberry Pi, ESP32 LoRa projects | ||
● Fortune Global 500 Supply Chain Partner — Trusted antenna supplier for major networking and IoT device manufacturers
● 80+ Countries Shipped — Proven reliability across consumer electronics, industrial IoT, and telecom markets
● In-House RF Lab — VSWR, gain, and pattern testing on every production batch
● Fast Sampling — 3–5 business day prototype turnaround for custom frequency tuning
● Volume Flexibility — From 100-piece prototyping runs to 1M+ annual OEM contracts
● 24/7 Technical Support — RF engineers available for matching network design and antenna placement guidance
Item | Options | ||
Frequency | 433 MHz / 868 MHz / 915 MHz / 315 MHz / Custom | ||
Gain | 2 dBi / 3 dBi / 5 dBi | ||
Length | 3 cm / 5 cm / 8 cm / 10 cm / Custom | ||
Connector | SMA Male RA / SMA Male Straight / RP-SMA / U.FL / IPEX / Custom | ||
Element Style | Spring coil / Straight whip / Flexible / PCB printed | ||
Color | Black / White / Gray / Custom | ||
Mounting | SMA panel / PCB solder / Snap-fit / Adhesive base | ||
Cable (if applicable) | RG178 / RG316 / 1.13 mm / Custom length | ||
Packaging | Bulk / Tray / Custom retail box | ||
Branding | OEM logo / Custom label / Neutral | ||
Q1: Is a 5 cm antenna efficient at 433 MHz?
A: At 433 MHz, a full quarter-wave antenna is approximately 17 cm. A 5 cm element is electrically short and uses loading (spring coil or matching network) to achieve resonance. While gain is modest (3 dBi), it provides adequate indoor range for typical IoT/router applications (10–50 m line-of-sight). For maximum range, a longer antenna is recommended; for compact design, this 5 cm solution is optimal.
Q2: What does "SMA Male Right Angle" mean?
A: The connector pins into a standard SMA female jack on your device, but the antenna element bends 90° at the base. This allows the antenna to lie flat against the enclosure surface rather than sticking straight up, saving vertical clearance in tight installations.
Q3: Can this antenna work for both 433 MHz and 868 MHz simultaneously?
A: Standard models are tuned to one frequency for optimal VSWR. We do offer a dual-band version (433/868 MHz) with a slightly modified matching network. Please specify your requirement when requesting a quote.
Q4: Is this antenna suitable for outdoor use?
A: This model is designed for indoor use. For outdoor deployments, we recommend our IP67-rated fiberglass or ABS-enclosed antenna series with UV and moisture protection.
Q5: What is the MOQ for custom-tuned versions?
A: Standard 433 MHz and 868 MHz models are available in stock with no MOQ. Custom frequency tuning or connector changes typically require a minimum order of 500–1000 pieces. Samples are available for evaluation.
Q6: Can you provide S-parameter (S11) files for PCB integration?
A: Yes. We provide S11 measurement data (.s1p / .s2p files) and recommended PCB ground plane dimensions to help your hardware team optimize placement and matching.
Q7: What is the lead time for bulk orders?
A: Stock models ship within 3–5 business days. Custom OEM orders (custom frequency, connector, or branding) typically require 10–20 business days depending on quantity.
Q8: Do you offer matching network design support?
A: Yes. Our RF engineering team can assist with π-network or L-network matching design to ensure optimal VSWR when the antenna is integrated into your specific enclosure or PCB layout.
Compact, reliable, and factory-direct — the perfect antenna solution for your router, gateway, or IoT device. Send us your frequency, connector, and quantity requirements for an immediate quotation and free sample.
📧 Email: minna_liao@bjdz.top
📱 WhatsApp/WeChat: +86 186 2128 3578
🌐 Alibaba Store: https://bjdz.en.alibaba.com/
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