Overview

FCO-3C-HP is a high-precision surface-mount crystal oscillator designed for engineers who need stable clock performance in a compact 3.2×2.5 mm footprint. It offers LVCMOS output, supply options of 1.8 V / 2.5 V / 3.3 V, frequencies from 2.5 to 60 MHz, and tight frequency-stability choices down to ±10 ppm across industrial temperatures. Fast ≤2 ms start-up and very low ≤0.5 ps RMS phase jitter (12 kHz–20 MHz) make it suitable for wireless connectivity, mobile devices and smart metering. See our crystal controlled oscillator guide (XO/TCXO/VCXO/OCXO) and a practical crystal vs MEMS comparison for context.

Key Features

• Precision Tight stability: ±10 ppm over −40~+85 °C; ±15/±20 ppm options over −40~+95 °C.
• Low Jitter Typical ≤0.5 ps RMS (12 kHz–20 MHz).
• Fast Start ≤2 ms start-up with tri-state enable on Pin-1.
• Low Power 4–6 mA max @ 15 pF load, ≤10 µA standby.
• Robust ±3 ppm/year aging (first year at 25 °C).

Key Specs

Quick test-condition note: unless otherwise stated, values are specified at 25 ± 5 °C ambient with nominal Vdd and 15 pF load.

Electrical Specifications

Parameter	Symbol	Min	Typ	Max	Units	Notes
Frequency range	F	2.5	—	60	MHz	Standard: 24 / 25 / 32 MHz
Supply voltage	Vdd	—	1.8 / 2.5 / 3.3	—	V	Nominal options
Current (15 pF load)	Icc	4	5	6	mA	Max at rated load
Duty cycle	TH/T	40/60	45/55	45/55	%	Measured at 50% Vdd
Rise / fall time	Tr / Tf	—	—	6	ns	10–90%, 15 pF load
Standby current	Icc(ST)	—	—	10	µA	OE disable (Pin-1)
Output load	CL	—	15	—	pF	LVCMOS
Output high / low	VoH / VoL	0.9 Vdd	—	0.1 Vdd	V	At rated load
RMS phase jitter	PJ	—	—	0.5	ps	Integrated 12 kHz–20 MHz
Start-up time	Tosc	—	—	2	ms	From power-on
Aging (1st year)	—	—	±3	—	ppm/yr	At 25 °C

Test conditions unless otherwise noted: 25 ± 5 °C ambient, 40–70% RH. Place a 0.1 µF bypass capacitor close to Vdd and GND for best performance. For definitions and best practices, see the XTAL oscillator parameters guide, Pierce load capacitance & drive level, and start-up time troubleshooting.

Frequency Stability vs. Temperature

Stability (ppm)	−20~+70 °C	−30~+85 °C	−40~+85 °C	−40~+95 °C
±10	●	●	●	×
±15	●	●	●	●
±20	●	●	●	●

● Available, × Not available. Stability includes calibration @25 °C, operating temperature, input voltage/load variation, aging (1st year), shock and vibration.

Typical Applications

• Wireless connectivity modules (Wi-Fi/BT/LPWAN)
• Mobile and handheld devices
• Smart meters and utility endpoints
• General-purpose embedded and industrial control

For broader oscillator usage contexts, see oscillator clock applications, networking & storage timing, and oscillators in 5G telecom.

Design Tips

• Decouple Vdd with a 0.1 µF ceramic capacitor placed within a few millimeters of the device pins.
• Keep the LVCMOS output trace short and away from high-edge-rate signals; maintain continuous ground return.
• Use the OE (Pin-1) to place the device in standby for low-power modes; ensure VIH/VIL thresholds are met.

If you want deeper theory/practice, these quick reads help: what is a clock oscillator, how crystal oscillators work, Pierce oscillator basics, and Barkhausen criterion tips.

Ordering Information

Contact us for full part-number rules, available frequencies and stability/temperature options. Standard frequencies include 24, 25, 32 MHz.

Selection Path / Upgrade Options

• Baseline option: FCO-3C
• Higher performance/upgrade: FCO-3C-UP
• Wide-temperature option: FCO-3C-WT
• EMI-optimized option: Low-EMI FCO-3C-LE

Documents & downloads

FAQ

Quality & engineering support

ISO certifications: ISO9001 and ISO14001. For applications engineering and technical support, contact FCom@fujicrystal.com or visit our contact page.