YQC1814F

SAW Filters | SMD 1814 Mid-Size Ceramic SMD SAW Filter

Core Advantages

• Optimized Size-Performance Balance: Smaller than 2520/3838 yet with better cavity space than 1109 — balancing miniaturization with power headroom, combining slim design with RF stability.
• Full-Condition Coverage: Automotive-grade variants meet extreme cold/heat in-vehicle and outdoor field environments; one-stop coverage across commercial, industrial, and automotive scenarios.

Product Introduction

The SMD1814 is a 1.8×1.4×0.6mm ceramic SMD SAW filter with mainstream 6-Pin / 8-Pin pad configurations. Frequency coverage spans 600MHz to 2.7GHz, with primary bands including: 4G/5G LTE full bands (B1/B3/B7/B28), GPS/BeiDou 1575MHz, 2.4GHz Bluetooth/Wi-Fi, and Sub-GHz ISM. Product range includes single-ended bandpass filters, RF duplexers, and carrier-aggregation quadplexers. Standard 50Ω impedance with full tape-and-reel SMT mass production ready. Positioned between the micro 1109 and mid-to-large 2520 packages, it is the mainstream mid-size RF filtering device for smartphones and IoT modules.

Alternative Products and Reasons

• Taiyo Yuden (Japan) — D5FCxx Series, 8-SMD: e.g. D5FC773M0K3NC-Z, D5FC847M0K3NE-Z.

PIN-TO-PIN Fully Compatible: Form factor and pad layout fully identical to imported parts. Customers can directly SMD substitute without any PCB redesign.

Key Features

• Package Dimensions: 1.8×1.4mm, thickness 0.6~0.8mm, standard 6-Pin / 8-Pin SMD pads, reduced PCB layout area suitable for high-density routing.
• Electrical Performance: Standard SAW: insertion loss 2.0~3.0dB, passband ripple ≤1.5dB, out-of-band rejection 48~60dB; duplexer TX-RX isolation ≥55dB; bandwidth 3MHz~90MHz customizable.
• Frequency Range: 600MHz~2700MHz, full coverage of LTE all bands, GNSS, 2.4GHz ISM, Sub-6GHz mainstream RF; TC type temperature drift ≤3ppm/°C, standard grade ≤7ppm/°C.
• Temperature Stability: Standard -20°C~+85°C; Industrial / Automotive -40°C~+125°C, minimal parameter variation across full temperature range; automotive models AEC-Q200 certified.
• Environmental Compliance: RoHS, REACH compliant; select automotive models AEC-Q200 certified; input power tolerance 28~33dBm, ESD immunity compliant; defends against WiFi and adjacent-channel spurious crosstalk; standard 50Ω I/O — no additional matching components required.

Applications

• Smartphones & Smart Terminals: 4G / entry 5G smartphone RF transceiver paths, global-band LTE duplexer / diversity filtering, feature phone RF front-ends, entry tablet RF modules, TWS high-end earbud RF.
• IoT Wireless Modules: Cat.1 / NB-IoT communication modules, BLE Bluetooth modules, WiFi RF modules, portable GNSS positioning modules, shared-device wireless motherboards.
• Automotive Electronics: T-BOX telematics terminals, smart key RKE, TPMS tire pressure receiver modules, in-vehicle infotainment navigation RF boards, automotive Bluetooth receive chains.
• Industrial & Security Wireless: Long-range ISM data modules, smart utility metering (water/gas/electricity), industrial remote control, indoor burglar alarm host RF, portable temperature sensing terminals.
• Portable Communication Devices: Mini two-way radios, drone flight-controller RF, compact private-network data radios, wearable watch GNSS navigation filtering.

Certifications

RoHS, REACH compliant; select automotive models AEC-Q200 certified.

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