YQM3030R

SAW Resonators | SMD 3030 Ceramic Single-Port SAW Resonator

Core Advantages

• Fundamental Oscillation Without Multiplication: Operates directly at fundamental frequencies across 315MHz, 433MHz, 868MHz, 915MHz and other common Sub-1GHz ISM bands — eliminating the complexity, spurious products, and PCB area of crystal frequency multiplication chains.
• Ultra-Compact SMD 3030 Package: Only 3.0×3.0mm footprint with 6-pad ceramic SMD package, ideal for high-density PCB designs in space-constrained wireless transmitters, key fobs, and IoT sensor nodes.
• Frequency-Stable & Tuning-Free: Compared to discrete LC/RC oscillator tanks, the SAW resonator dramatically reduces sensitivity to component tolerance drift, supply voltage variation, and parasitic effects — slashing production-line tuning time and improving first-pass yield.
• Automation-Ready Manufacturing: Supplied in tape-and-reel, supports standard 260°C lead-free reflow soldering. Select models rated MSL 1 and fully RoHS/REACH compliant for high-volume SMT assembly.
• Bidirectional Pad Layout: Single-port configuration with two interchangeable active terminals and NC pads for mechanical anchoring and parasitic control — simplifies PCB layout and reduces orientation errors during placement.

Product Introduction

The YQM3030R is a single-port SAW (Surface Acoustic Wave) resonator in the industry-standard SMD 3030 ceramic package (3.0×3.0mm, 6-pad). It leverages piezoelectric substrate acoustic wave resonance to provide a stable, fundamental-frequency oscillation reference for wireless transmitters, local oscillators, and frequency-control circuits operating between approximately 300MHz and 1GHz.

Unlike conventional crystal oscillators that require overtone or PLL-based multiplication to reach UHF frequencies, the YQM3030R oscillates directly at the target carrier frequency — supporting popular ISM band frequencies including 315MHz, 433.92MHz, 868MHz, and 915MHz. This direct fundamental-mode operation significantly reduces BOM count, PCB area, design complexity, and spurious emissions compared to multiplier-based alternatives.

The device is designed for drop-in compatibility with major international SAW resonator footprints (RFMi RO3103E, RO3101E series) and is manufactured under strict process controls to deliver consistent frequency accuracy, low insertion loss, and reliable long-term aging performance. It is an ideal cost-optimized solution for fixed-frequency, low-to-moderate power wireless transmitter designs across consumer, industrial, and smart-home applications.

Alternative Products and Reasons

• RFMi / Akoustis (USA) — RO3103E Series: 3×3mm SM3030-6 package SAW resonator, designed for 418MHz AM remote control and security alarm transmitter applications.
• RFMi / Akoustis (USA) — RO3101E Series: Same SM3030-6 package, single-port resonator specifically optimized for European 433MHz remote control and wireless security transmitter designs.
• WINNSKY / Shenzhen Winnsky (China) — NDR Series: Identical package dimensions and application scenarios; frequency points can be cross-referenced for direct replacement.

Replacement Reason: Package dimensions, pin layout, and PCB footprint are fully compatible. YQM3030R offers a domestically manufactured alternative with competitive lead times, local FAE support, and cost-optimized supply — customers can drop-in replace without any PCB redesign.

Key Features

• Package Form: Ceramic SMD 3.0×3.0mm, 6-pad configuration; standard tape-and-reel packaging compatible with high-speed SMT pick-and-place and reflow soldering (260°C peak).
• Frequency Coverage: Fundamental oscillation from ~300MHz to 1GHz, with standard frequency options at 315MHz, 433.92MHz, 868MHz, 915MHz and other Sub-1GHz ISM bands. Custom frequencies available upon request.
• Single-Port Topology: Simple two-terminal RF connection with interchangeable active pads; ideal for Colpitts/Pierce oscillator topologies commonly used in ASK/OOK and FSK transmitter designs.
• Frequency Stability: Excellent temperature and aging characteristics compared to LC/RC tank circuits. Significantly reduced frequency drift over supply voltage variation and environmental changes — minimizes field return rates.
• Low Power & Low Cost: Optimized for fixed-frequency, low-to-moderate power wireless transmitter applications. Passive device requiring no DC bias — ideal for battery-powered remote controls, sensors, and IoT endpoints.
• Quality & Reliability: MSL 1 moisture sensitivity rating, RoHS and REACH compliant. Manufactured under ISO 9001 quality management with full batch traceability.
• Domestic Supply Advantage: Local technical support, fast sample delivery, competitive pricing, and stable long-term supply — suitable for replacing imported SAW resonators in high-volume production.

Applications

• Garage Door & Gate Openers: Fixed-frequency transmitters for garage doors, rolling shutters, swing gates, and building access control systems (315/433MHz).
• Smart Home Wireless: Wireless light switches, door/window sensors, PIR motion detectors, smart plugs, and home automation remote controllers.
• Wireless Metering & Telemetry: AMR/AMI utility meter reading, low-speed wireless data links, industrial remote monitoring and telemetry transmitters.
• Point-of-Sale & Barcode: Wireless POS terminals, handheld barcode scanners, and fixed-frequency RF transmitter modules for retail and logistics equipment.
• GPS & Communication Auxiliary Circuits: Local oscillator frequency reference for GPS receivers, walkie-talkies, and general wireless communication frequency-control stages.

Certifications

RoHS, REACH compliant. MSL 1 rated. Manufactured under ISO 9001 certified quality management system.

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