HF303.875 303.875MHz SAW Filter Approved by: Checked by: Issued by: SPECIFICATION PRODUCT: SAW FILTER MODEL: HF303.875 TO-39 HOPE MICROELECTRONICS CO.,LIMITED Tel:+86-755-82973806 Fax:+86-755-82973550 E-mail: [email protected] Page 1 of 3 http://www.hoperf.com SAW Filter HF303.875 The HF303.875 is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter in a low-profile metal TO-39 case designed to provide front-end selectivity in 303.875 MHz receivers. Receiver designs using this filter include superhet with 10.7 MHz or 500 kHz IF, direct conversion and superregen. 1.Package Dimension (TO-39) 2.Marking Pin Configuration 1 Input / Output 2 Output / Input 3 Case Ground Dimension Data (unit: mm) A 9.30±0.20 B 5.08±0.10 C 3.40±0.20 D 3±0.20∕5±0.20 E 0.45±0.20 3.Test Circuit HF303.875 Color: Black or Blue 4.Typical Frequency Response Tel:+86-755-82973806 Fax:+86-755-82973550 E-mail: [email protected] http://www.hoperf.com SAW Filter HF303.875 5.Performance 5-1.Maximum Rating Rating Value Unit P +10 dBm DC Voltage Between Any Two Pins VDC ±30 V Storage Temperature Range Tstg -40 to +85 ℃ Operating Temperature Range TA -10 to +60 ℃ CW RF Power Dissipation 5-2.Electronic Characteristics Characteristic Minimum Center Frequency (center frequency between 3dB points) fC Insertion Loss IL 3dB Bandwidth BW3 Rejection Temperature Typical Maximum Unit 303.875 -- MHz 3.0 4.5 dB 600 800 kHz at fC -21.4MHz (Image) 40 50 -- at fC -10.7MHz (LO) 20 30 -- Ultimate -- 60 -℃ Turnover Temperature TO Turnover Frequency fO fC MHz FTC 0.032 ppm/℃ |fA| 10 ppm/yr Frequency Temperature Coefficient Frequency Aging Absolute Value during the First Year 25 dB 55 2 CAUTION: Electrostatic Sensitive Device. Observe precautions for handling! C ○ 2003. All Rights Reserved. 1. 2. The frequency fC is defined as the midpoint between the 3dB frequencies. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture that is connected to a 50Ω test system with VSWR≤1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, fC. Note that insertion loss, bandwidth, and passband shape are dependent on the impedance matching component values and quality. Unless noted otherwise, specifications apply over the entire specified operating temperature range. Frequency aging is the change in fC with time and is specified at +65°C or less. Aging may exceed the specification for prolonged temperatures above +65°C. Typically, aging is greatest the first year after manufacture, decreasing in subsequent years. Turnover temperature, T0, is the temperature of maximum (or turnover) frequency, f0. The nominal frequency at any case temperature, TC, may be calculated from: f = f0 [1 - FTC (T0 - TC)2]. The specifications of this device are based on the test circuit shown above and subject to change or obsolescence without notice. All equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sale. Our liability is only assumed for the Surface Acoustic Wave (SAW) component(s) per se, not for applications, processes and circuits implemented within components or assemblies. For questions on technology, prices and delivery, please contact our sales offices or e-mail [email protected]. 3. 4. 5. 6. 7. 8. 9. Tel:+86-755-82973806 Fax:+86-755-82973550 E-mail: [email protected] http://www.hoperf.com