455C54 Ceramic Discriminator 1. APPLICATION This specification is applied to ceramic discriminator : 455C54 used for quadrature detection with IC : TA31142F (TOSHIBA ) 2. SPECIFICATION No.: QJ/A5•25•0512 MODEL NAME Part Name Customer’s Part No. Customer’s Draving No. 55C54 3. DIMENSIONS : ( mm ) Material List Case Polybutenetelephthalate (mixture of glass fiber) Terminal Phosphor bronze Ag Clad Base Sealing 4. Epoxy MAXIMUM RATINGS 4.1 Withstanding Voltage (Between each terminal) 4.2 Insulation Resistance (Between each terminal) 4.3 Input signal level 4.4 Operating Temperature Range 4.5 Storage Temperature Range : D.C. 5OV. 1 minute : 100 MΩ min. at D.C. 100V : : : 5dB (50Ω Termination ) - 20℃ to + 80 ℃ 25 ±5℃ SHENZHEN LUGUANG ELECTRONIC TECHNOLOGY CO.,LTD. resin 455C54 Ceramic Discriminator 5. ELECTRICAL CHARACTERISTICS 5-1 5-2 5-3 5-4 ( 0℃ to + 40 ℃ ) Item Requirements Receiver Audio 3dB Bandwitdth (from 455KHz) Receiver Audio Output Voltage (at 455KHz) Distortion (at 455 KHz) Withstanding Voltage ±4.0 KHz min. 40 ± 20 mV 3.0% max. 50V D.C. for 1 minute 5-5 Test Method Input signal Condition Input level : 80dB Frequency Deviation : ±4.0KHz Modulation Frequency : 1 KHz 1) Recoverd Audio Input the above signal and sweep the carrier frequency 3dB Bandwidth around 455 KHz and find out the maximum audio output frequency. Then sweep the carrier frequency again and find two frequencies which are observed -3dB attenuation points from the maximum point . Higher frequency point is called (f1) and lower called (f2), (f1-455KHz)is defined as upper 3dB bandwidth and (455Khz-f2) defined as lower 3 dB bandwidth. 2) Receiver Audio Output Voltage 3) Distortion Receiver audio output voltage shall be measured when carrier frequency is adjusted to 455KHz. Carrier frequency is adjusted to 455Khz. And then ,distortion shall be measured with 1 kHz modulation frequency. 6. PRYSICAL AND ENVIRONMENTAL CHARACTERISTICS Test Item 6-1 Lead Strength Lead Pulling Lead Bending 6-2 Vibration Condition of Test Requirements After force 1.0Kg is applied to each lead in axial direction. No mechanical filter shall be measured. When force of 0.5Kg is applied to each lead in axial damage and the measured values shall 。 direction the lead shall be folded up to 90 from the axial meet item 5. direction and folded back to the axial direction . Filter shall be measured after being applied vibration of amplitude of 1.5mm with 600 to 3,300 r.p.m. band of vibration frequency to each of 3 perpendicular directions for 2 hour . SHENZHEN LUGUANG ELECTRONIC TECHNOLOGY CO.,LTD. 455C54 Ceramic Discriminator 6-3 Random Drop 6-4 Temperature Filter shall be measured within Characteristics temperature range. 6-5 Humidity 6-6 Resistance to Soldering Heat Filter shall be measured after 3 times random dropping from the height of 30cm on concrete floor -20 ℃ to +80 ℃ Filter shall be measured after being placed in a chamber with 90 to 95% R. H. at 40±2℃ for 100 hours and then being placed in natural condition for 2 hour. The measured values shall meet Table 1. Lead terminals are immersed up to 1.5mm from filter’s body in soldering bath of 260±5℃ for 5±0.5 seconds and then filter shall be measured after being placed in natural condition for 2 hour. 6-7 Life Test（High Filter shall be measured after being placed in chamber with Temperature） 80℃ for 100 hours and then being placed in natural condition for 2 hour. 6-8 Life Test Filter shall be measured after being placed in a chamber （Low with -20℃ for 100 hours and then being placed in natural Temperature） condition for 2 hours. 6-9 Thermal Shock After temperature cycling of -20℃（30 minutes）to +80℃ （30 minutes）was performed 5 times. Filter shall be returned to room temperature. And filter shall be measured after being placed in natural condition for 2 hours. Item Receiver Audio 3dB Bandwidth (from 455KHz) Receiver Audio Output Voltage (at 455KHz) Distortion ( at 455KHz) Requrements ±4.0 KHz min. 40±20 mV 4.0 % max. Withstanding Voltage 50V D. C. for 1 minute. Table 1. SHENZHEN LUGUANG ELECTRONIC TECHNOLOGY CO.,LTD.