Seiko Epson Corporation FA-238 and FA-238V Crystal Units Datasheet

Category: Crystals Resonators, Electronics, Seiko Epson Corporation

Overview of Seiko Epson Crystal Units

The provided datasheet outlines the specifications and features of the Seiko Epson Corporation Crystal Units, including the FA-238 and FA-238V models. These crystal units are designed for a wide frequency range from 12 MHz to 60 MHz (FA-238, FA-238V), with compact external dimensions, fundamental overtone order, and suitable for mobile phone, Bluetooth, W-LAN, ISM band radio, and clock for MPU applications.

Product Specifications

Nominal Frequency Range: The crystal units operate within a nominal frequency range from 12.000 MHz to 60.000 MHz, with specific ranges depending on the model. The company advises customers to contact them for available frequencies outside this range. The following important characteristics are highlighted:

Storage Temperature: -40°C to +125°C for single product storage.
Operating Temperature: -40°C to +85°C, with a substantial range that depends on use conditions.
Drive Level: A maximum of 200 μW with 100 μW recommended.
Frequency Tolerance: This includes the frequency stability with temperature, for which customers are encouraged to get in touch for specific needs not listed.
Load Capacitance: Specified at 7 pF or to be defined by the customer.
Motional Resistance (ESR): Varies according to the frequency and specified in a provided table.
Frequency Aging: A maximum of 1×10⁶ per year for FA-238, and varying for subsets of frequency ranges.

Additional Details

Additional technical details comprise external dimensions, internal connection, and footprint recommendations for circuit board design. Seiko Epson also prides itself on environmental management with its ISO 14001 certification and quality assurance through ISO9001 and IATF 16949 certifications, ensuring reliability and customer satisfaction through comprehensive standards.

Environmental and Quality Commitments

The datasheet emphasizes Seiko Epson’s commitment to environmental sustainability through the promotion of its Environmental Management System (EMS) which is ISO 14001 certified. Additionally, it underscores the company’s dedication towards high quality with ISO9001 and IATF 16949 certifications.

RoHS Compliant Products

All products are compliant with the EU RoHS directive, including the FA-238 and FA-238V crystal units. This reiterates the company’s promise to meet environmental standards.

Usage Precautions

The datasheet includes a set of important notices. It advises users to consult Seiko Epson Corporation sales representatives before purchasing or using products, to adhere to the latest information, and to acknowledge that specifications are subject to change without notice. There are also warnings against unauthorized usage, dismantling, or reverse engineering Epson products and a disclaimer for their use in applications requiring extremely high reliability or beyond the specified use cases.