YQC1109F

SAW Filters | SMD 1109 Ultra-Miniature Ceramic SMD SAW Filter

Core Advantages

• Ultra-Compact Size: Dramatically smaller than 3030/3838 packages, ideal for ultra-thin portable devices and high-density PCB design — enabling product miniaturization.
• Low Insertion Loss, High Performance: Low passband loss with excellent out-of-band rejection boosts receiver sensitivity; effectively suppresses WiFi and cellular spurious crosstalk.
• 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 SMD1109 is an ultra-compact 1.1×0.9×0.5mm leadless ceramic SMD SAW filter featuring a mainstream 5-Pin pad standard configuration. Frequency coverage spans 800MHz to 2.7GHz, with primary frequencies covering: LTE full mobile bands, GPS/BeiDou 1575MHz, 2.4GHz Bluetooth/WiFi, and Sub-1GHz cellular receive bands. Standard 50Ω single-ended impedance, compatible with high-speed SMT micro-mounting.

Alternative Products and Reasons

• Murata (Japan) — SAFF Micro SAW Series: SAFFB full lineup, classic model SAFFB876MAA0F0A.
• Qorvo (USA) — B39 Micro RF SAW: B3924XX, B391XX Series, 1.1×0.9mm SMD models.
• Taiyo Yuden (Japan) — F6QA Series: F6QA1GXX full-band 1109-5P SAW filters.
• Kyocera (Japan) — SF11 Series: e.g. SF11-2593M5UUA1.

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: 1.1×0.9mm, ultra-thin 0.5mm profile, standard 5-Pin SMD, tape-and-reel mass production, micro PCB pad design saving up to 70% PCB layout area.
• Electrical Performance: Insertion loss ≤1.8~2.5dB, passband ripple ≤1.2dB, out-of-band rejection 42~55dB, bandwidth customizable 5~80MHz; TC-SAW temperature drift ≤3ppm/°C, standard grade ≤8ppm/°C.
• Frequency Range: 800MHz~2700MHz, full coverage of 2G/4G LTE, GNSS, 2.4GHz ISM mainstream RF bands.
• Temperature Stability: Standard -20°C~+85°C; Industrial / Automotive -40°C~+125°C, stable performance across full temperature range.
• Environmental Compliance: RoHS, REACH compliant; select automotive models meet AEC-Q200; standard 50Ω I/O — no external matching capacitors needed; ESD protection compliant; immune to adjacent-channel and 2.4GHz spurious interference.

Applications

• Smartphones & Smart Terminals: Smartphone LTE B3/B8/B39 and other band receive paths, feature phone RF front-ends, smart watches, TWS Bluetooth earbud RF filtering, tablet RF module diversity receive.
• Portable IoT Wireless Modules: NB-IoT, Cat.1 modules, Bluetooth BLE modules, WiFi 6 compact RF modules, portable trackers, wearable GNSS navigation (1575MHz).
• Automotive Compact Electronics: In-vehicle T-BOX, Bluetooth keys, TPMS micro receiver modules, compact form-factor in-vehicle navigation RF boards.
• Portable Wireless Devices: Mini two-way radios, portable temperature/sensing wireless terminals, drone micro flight-controller RF, micro security alarm modules.
• Communication & Data Transmission: Micro industrial data modules, IoT water/gas meter built-in RF boards, short-range private network micro transceiver equipment.

Certifications

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

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