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ECS-120-18-33-JGN-TR

ECS-120-18-33-JGN-TR

ECS Inc.
12 MHz ±20ppm Crystal 18pF 100 Ohms 4-SMD, No Lead
Active11,306 in stock
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Overview

The ECS-120-18-33-JGN-TR is a 12 MHz surface-mount crystal designed for fundamental mode operation in high-density PCB layouts. It is housed in a compact 3.20mm x 2.50mm 4-pad package, offering a frequency tolerance of +/-20ppm and a frequency stability of +/-30ppm. This component provides a stable timing reference for microcontrollers and digital systems requiring a 12 MHz clock source.

Why Choose This Part

This crystal features a low profile height of 0.80mm, making it suitable for thin electronics. It offers a balanced 18pF load capacitance and an ESR of 100 Ohms, ensuring reliable startup and oscillation with most standard CMOS integrated circuits.

Applications

Microcontroller Clocking
Provides the external clock source for MCUs that require 12 MHz for internal PLL frequency synthesis or USB operations.
USB Peripheral Interfaces
Ideal for USB 2.0 Full Speed interfaces that utilize a 12 MHz crystal to generate accurate 48 MHz internal timing.
Industrial Control Systems
Used in PLC and sensor interface boards where a wide operating temperature of -40 to +70 degrees Celsius is required.
Consumer Electronics
Small footprint makes it suitable for portable devices and smart home hardware with limited PCB real estate.

Key Specifications

Type MHz Crystal
Frequency 12 MHz
Mounting Type Surface Mount
Operating Mode Fundamental
Package / Case 4-SMD, No Lead
Load Capacitance 18pF
Size / Dimension 0.126" L x 0.098" W (3.20mm x 2.50mm)
Frequency Stability +/-30ppm
Frequency Tolerance +/-20ppm
Height - Seated (Max) 0.031" (0.80mm)
Operating Temperature -40degC ~ 85degC
Supplier Device Package 4-SMD (3.2x2.5)
ESR (Equivalent Series Resistance) 100 Ohms

Getting Started

Ensure that the PCB traces between the crystal and the IC load capacitors are kept as short as possible to minimize parasitic capacitance. When calculating external load capacitors, use the formula C = 2 * (CL - Cstray) where CL is the specified 18pF and Cstray is typically 3-5pF.

Categories

Clocks & Timing > Crystal Oscillators