How do I download the FSR-3225 datasheet?

Use the Download Datasheet button on this page. The datasheet includes electrical characteristics, packaging, and recommended handling.

FSR-3225 SMD SAW Resonator (3.2×2.5 mm)

FSR-3225 is a compact SAW resonator designed for high transmit/receive sensitivity and robust environmental resistance. It supports 154–1000 MHz and common sub-GHz frequencies such as 315 MHz, 433.92 MHz, and 915 MHz. Learn more about SAW Resonator.

154–1000 MHz 3.2×2.5×1.0 mm SMD Standard: 315 / 330 / 370 / 433.92 / 915 MHz Tolerance @25°C: ±50 / ±75 / ±150 kHz Insertion loss (min): 1.0–1.5 dB −40 to +85°C operation RoHS compatible

Request Quote / Sample Download Datasheet View Specs

Email: FCom@fujicrystal.com (share target frequency, tolerance, and operating temperature range).

FSR-3225 3.2×2.5mm SMD SAW resonator product image

Key Features

Compact 3225 footprint: 3.2×2.5×1.0 mm SMD package for space-constrained RF designs.
High transmit and receive sensitivity for stable wireless link performance.
Environmental resistance, including high-temperature resistance and impact resistance.
Wide frequency coverage: 154–1000 MHz with standard options.
Flexible tolerance: ±50/±75/±150 kHz at 25°C (or specify).
Low insertion loss (min): 1.0/1.3/1.4/1.5 dB (or specify).
RoHS compatible.

Frequency Range

154–1000 MHz

Package

3.2×2.5×1.0 mm

Standard Frequencies

315 / 433.92 / 915 MHz

Operating Temp

−40 to +85°C

Recommended Applications

Sub-GHz ISM-band RF modules (315 / 433.92 / 915 MHz)
Automotive RKE (remote keyless entry), remote control Tx/Rx
TPMS and short-range sensor links
Security alarms, access control, telemetry and industrial wireless

Note: final performance depends on matching, PCB layout, and grounding quality around the resonator.

Electrical Specifications

The table below summarizes the FSR-3225 series. For special requirements, contact FCom Fuji Crystal.

Item	Minimum	Typical	Maximum	Unit
Frequency Range (f)	154		1000	MHz
Standard Frequency		315, 330, 370, 433.92, 915		MHz
Frequency Tolerance @25°C (Δf)		±50 / ±75 / ±150, or specify		kHz
Insertion Loss (min) (IL)		1.0 / 1.3 / 1.4 / 1.5, or specify		dB
Turnover Temperature (T0)		25 / 40 / 55		°C
Frequency Temperature Coefficient (FTC)		0.032		ppm/°C
Frequency Aging (first year, \|fA\|)			≤10	ppm/yr
DC Insulation Resistance (any two pins)	1			MΩ
Operating Temperature Range	−40		+85	°C
Storage Temperature Range	−55		+125	°C

Tip: Keep RF traces short, place ground vias close to ground pads, and isolate the resonator from noisy digital nets to minimize parasitics and maintain stability.

Datasheet: Download FSR-3225 PDF

Package & Pinout

Item	Details
Package Size	3.2×2.5×1.0 mm (SMD)
Pin Assignment	Pin 1: Input/Output Pin 3: Output/Input Pin 2, 4: Ground
Layout Guidance	Use a continuous RF ground reference. Connect ground pins to low-impedance ground with short vias. Keep RF routing short and avoid stubs.

Note: Pin 1 and Pin 3 are bidirectional depending on circuit topology. Ground pins should be stitched to a solid RF ground plane.

Design Recommendations

Ground first: prioritize a low-impedance RF return path; place multiple ground vias near pins 2 and 4.
Short RF interconnect: minimize line length between the resonator and RF IC/network; avoid dangling stubs.
EMI isolation: keep away from high-speed clocks and switching regulators; maintain clean reference ground.
Thermal robustness: confirm tolerance target across temperature for your end system (−40 to +85°C).
Custom options: if you need a special frequency/tolerance, share target MHz and kHz requirement via email.

For custom frequency or tighter tolerance, contact: FCom@fujicrystal.com

FAQ

Which standard frequencies are available for FSR-3225?

FSR-3225 covers 154–1000 MHz. Standard frequencies include 315, 330, 370, 433.92, and 915 MHz. Custom frequencies can be specified.

What tolerance options are supported at 25°C?

Typical options are ±50 kHz, ±75 kHz, and ±150 kHz at 25°C. You can also specify a custom tolerance based on frequency and application.

How do I download the datasheet?

Click the Download Datasheet button. If you need a customized type, email FCom@fujicrystal.com with your target frequency and tolerance.