Product Overview
The FC-135R, FC-135, and FC-255 are crystal units designed for general use in electronic equipment, with specific applications in small communication devices. They offer fundamental overtone operation and are available in various frequency ranges and specifications to meet diverse application needs.
Product Attributes
- Brand: Seiko Epson Corporation
- Certifications: ISO 14001, ISO 9001, ISO/TS 16949
- Environmental Compliance: Pb free, Complies with EU RoHS directive
- Applications: Designed for automotive applications such as Car Multimedia, Body Electronics, Remote Keyless Entry, Engine Control Unit, Air Bag, ESC etc.
Technical Specifications
| Item | Symbol | FC-135R | FC-135 | FC-255 | Conditions / Remarks |
| Nominal frequency range | f_nom | 32.768 kHz | 32.768 kHz | 32 kHz to 77.5 kHz | |
| 32.768 kHz | 32 kHz to 100 kHz | Please contact us about available frequencies. | |||
| Storage temperature | T_stg | -55 C to +125 C | Storage as single product. | ||
| Operating temperature | T_use | -40 C to +85 C | |||
| Level of drive | DL | 0.5 W (1.0 W Max.) | 0.5 W Max. | Please contact us if you require 1.0W Max. | |
| Frequency tolerance (standard) | f_tol | 20 10-6 | +25 C, DL=0.1 W | ||
| Please ask for tighter tolerance | |||||
| Turnover temperature | Ti | +25 C 5 C | |||
| Parabolic coefficient | B | -0.04 10-6 / C2 Max. | |||
| Load capacitance | CL | 7 pF, 9 pF, 12.5 pF | 7 pF, 12.5 pF | Please specify | |
| Motional resistance (ESR) | R1 | 50 k Max. | 70 k Max. | ||
| 70 k to 45 k | 65 k Max. | ||||
| 70 k to 30 k | |||||
| Motional capacitance | C1 | 3.4 fF Typ. | 3.4 fF Typ. | 3.7 fF to 1.6 fF | |
| 2.0 fF Typ. | 2.3 fF to 0.6 fF | ||||
| Shunt capacitance | C0 | 1.1 pF Typ. | 1.0 pF Typ. | 1.3 pF to 0.5 pF | |
| 1.3 pF Typ. | 1.7 pF to 0.9 pF | ||||
| Frequency aging | f_age | 3 10-6 / year Max. | +25 C, First year | ||
2506191621_EPSON-Q13FC1350000200_C22455855.pdf
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