YQM3225R

SAW Resonators | SMD 3070 3-Pin Single-Port SAW Resonator

Core Advantages

• In-House SAW Die Manufacturing (IDM): YQM3070R benefits from vertically integrated SAW die fabrication — ensuring complete quality control from wafer to finished device, supply chain security, and faster custom frequency development cycles compared to fabless competitors.
• Ultra-Slim 3-Pin SMD 3070 Package: Compact 3.0×7.0mm footprint with simple 3-pad layout. The slim, elongated form factor is well-suited for narrow-edge PCB designs such as remote control key fobs, pen-style transmitters, and slim sensor enclosures.
• Fast Start-Up & Simplified BOM: Single-port SAW topology requires minimal external components — typically just a transistor, a few passives for biasing and matching, and a feedback path — enabling rapid oscillator start-up and straightforward design-in for ASK/OOK/FSK transmitter chains.
• Wide Sub-1GHz Frequency Coverage: Covers international ISM bands including 315MHz, 433.92MHz, 868MHz, and 915MHz with additional frequency options at 310MHz, 350MHz, and 920MHz. Standard frequency tolerance as tight as ±75kHz.
• Domestic Supply at Scale: As a China-based IDM with full in-house manufacturing, YQM delivers stable pricing, predictable lead times, and responsive local FAE support — ideal for high-volume replacement of Murata SARCC, RFMi RO30xx/RO31xx, and TDK/EPCOS R-series SAW resonators.

Product Introduction

The YQM3070R is a single-port SAW resonator in the SMD 3070 form factor — a 3.0×7.0mm, 3-pin SMD package specifically engineered for fixed-frequency wireless transmitter and local oscillator applications. It provides a stable, high-Q frequency reference by exploiting surface acoustic wave resonance on a piezoelectric substrate, fundamentally replacing traditional LC oscillator tanks and through-hole crystal resonators in cost-sensitive, space-constrained RF designs.

With standard frequency coverage spanning 315MHz, 433.92MHz, 868MHz, and 915MHz ISM bands — and custom options at 310MHz, 350MHz, and 920MHz — the YQM3070R is an excellent all-purpose resonator for popular Sub-1GHz unlicensed radio applications worldwide. The device's single-port topology works seamlessly with common transistor-based oscillator circuits used in ASK (Amplitude Shift Keying), OOK (On-Off Keying), and FSK (Frequency Shift Keying) transmitter architectures.

Manufactured entirely in-house — from SAW die design and wafer fabrication through packaging and final test — the YQM3070R delivers the supply assurance and technical support that high-volume OEMs and ODMs demand for remote controls, wireless alarm systems, smart home devices, and industrial IoT endpoints.

Alternative Products and Reasons

• Murata (Japan) — SARCC Series: Functionally and circuit-compatible single-port SAW frequency control devices for remote control and local oscillator applications. Same operating principle and target frequency bands.
• RFMi / Akoustis (USA) — RO30xx / RO31xx Series: Functionally equivalent SAW resonators covering common Sub-1GHz ISM bands; application scenarios are highly aligned with YQM3070R across remote control, alarm, and fixed-frequency transmitter designs.
• TDK / EPCOS (Germany) — R Series SAW Resonator: Functionally and solution-compatible SAW resonators for remote control, short-range wireless, and fixed-frequency transmitter applications.

Replacement Reason: YQM3070R offers a domestically manufactured, IDM-backed alternative with competitive pricing, shorter lead times, and direct factory technical support — enabling seamless transition from imported Murata, RFMi, and TDK SAW resonators without circuit redesign.

Key Features

• Package Form: SMD 3070 — typical dimensions 3.0×7.0mm, 3-pad configuration. Single-port SAW resonator topology, compatible with standard SMT reflow soldering for high-volume production.
• Frequency Coverage: Covers 310MHz to 920MHz, with primary ISM band frequencies at 315MHz, 433.92MHz, 868MHz, 915MHz. Standard frequency tolerance as tight as ±75kHz; refer to individual datasheets for exact specifications per frequency code.
• Frequency Stability: Superior to LC oscillator tanks — reduced sensitivity to component tolerance drift, temperature variation, and parasitic effects ensures consistent center frequency over volume production without per-unit tuning.
• Simplified Peripheral Circuit: Single-port design requires only a transistor plus a handful of passive bias, matching, and feedback components to form a complete RF oscillator — reducing BOM count, PCB area, and design cycle time.
• Oscillator Circuit Compatibility: Proven in Colpitts and Pierce topologies for ASK/OOK and FSK modulation schemes used in low-to-moderate data rate wireless links (typically up to several kbps).
• Mass Production Ready: Supplied in tape-and-reel format. Fully compatible with automated SMT pick-and-place and lead-free reflow soldering processes. RoHS and REACH compliant.

Applications

• Wireless Remote Controls: Garage door openers, rolling shutter controls, electric gate remotes, building access key fobs, and smart door locks (315/433MHz bands).
• Security & Alarm Systems: Wireless PIR motion detectors, door/window contact sensors, smoke detectors, panic buttons, and alarm host transmitter front-ends.
• Smart Home: Wireless light switches, curtain controllers, smart plugs, temperature/humidity sensors, and scene control panels.
• Industrial IoT: Wireless sensor nodes for factory monitoring, remote telemetry, utility meter reading (water/gas/electricity), and low-speed industrial data links.
• Consumer Electronics: Toy remote controls, wireless game controllers, simple wireless control dongles, and hobbyist RF modules.
• Wireless Communication Auxiliary Circuits: Transmitter oscillators, local oscillator frequency references, and fixed-frequency RF transmitter modules for ISM-band applications.

Certifications

RoHS, REACH compliant. Manufactured under ISO 9001 certified quality management system with full batch traceability.

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