Piezoelectric Smd Components
Brand Name:HM
Certification:Rohs
Model Number:KHZ
Minimum Order Quantity:1000
Delivery Time:35 day
Payment Terms:T/T, Western Union, MoneyGram
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Wuxi Jiangsu China
Address:
Dongxing Road, Golden Bay Industrial Zone, Dongjiang Town, Binhu District, Wuxi City, Jiangsu Province Hansejohn Electronics
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Product Details
１． Scope
The specification applies to the discriminator for IF demodulation used in communications equipment .
２．Spec No.:HM-180.136b
３．Part No.:CDBC455C66
4． Input signal condition
| NO. | Item | Specification |
| 4 – 1 | Input level | -27.0dBm |
| 4 – 2 | Deviation | ±1.5KHz |
| 4 – 3 | Frequency Modulation | 1.0 khz |
5．Electrical Characteristics
| NO. | Item | Specification |
| 5 – 1 | Modulation Frequency | 455±1.0KHz |
| 5 – 2 | Demodulated Bandwidth(3dB) | ±4.2KHz min (from 455 kHz) |
| 5– 3 | Demodulated Output4 | 0±10mV. (at 455 kHz) |
| 5 – 4 | Demodulated Distortion Factor | 4.0%Max. |
| 5 – 5 | Withstand Voltage | D.C. 50V for 1 minute |
6. :Measurement
6－１． Measurement Condition
Unless otherwise sepecified ,the shandard range of atmospheric conditions for measurements and tests are as follows:
Ambient temperature:5℃ to 35 ℃ Relative humidity :45% to 85%
Air pressure :86Kpa to 106 Kpa
If there is doubt about the results, measurement shall be made within the following limits:
Ambient temperature:18℃ to 22 ℃ Relative humidity :60% to 70%
Air pressure :86Kpa to 106 Kpa
6－２． Measuring Circuit
6－3． Test Method
Input signal condition | Input level | 80dBμ |
| Frequency Deviation | ±4.0 kHz | |
| Modulation Frequency | 1.0 kHz | |
Demodulated 3dB Bandwidth | Input the above signal and sweep the carrier 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 3dB bandwidth. | |
Demodulate Output | Demodulated output shall be measured when carrier frequency is adjusted to 455KHz. | |
Demodulated Distortion Factor | Carrier frequency is adjusted to 455KHz.And distortion shall be measured with 1 kHz modulation frequency. |
7．/outline
7-1．
Appearance:Mark shall be clear,appearance shall be smooth and no damage.
7-2．
Material List
| NO. | Item | Specification |
| 1 | Case | Polybutenetelephthalate (mixture of glass fiber) |
| 2 | Terminal | Phosphor bronze Ag Clad |
| 3 | Base Sealing | Epoxy resin |
7-3.
Dimensions:(mm)
(1)(2) Input/Output
(3)Dummy
8．Physical Characteristics
NO. | Item | Measurement condition | Requirement |
8－１ | Random Drop | Filter shall be measured after 3 times random | No visible damage and it |
drops from the height of 30cm on concrete floor | meet Table 1 | ||
8－２ | Vibration | Filter shall be measured after being applied vibration of amplitude of 1.5mm with 10-55Hz band of vibration frequency to each of 3 perpendicular directions for 2 hours | No damage and it meet Table 1. |
8－3 | Solderability | Lead terminals are immersed in aide solder for 5 sec and then immersed in soldering bath of 230±5℃, for 3±0.5 sec. | At least 95% lead terminals shall be covered with solder. |
8－4 (１) | Terminal strength Pulling | After force of 1kg for 10 seconds is applied to each terminal in axial direction, Filter shall be measured. | No damage, no cut-off and it meet Table 1. |
(２) | Bending | After lead terminals shall be fixed at 2mm from filter’s body, they shall be folded up to 90°from their axial directions and folded back to –90°.Then folded back to their axial direction, the speed of folding be each 3 seconds. | No damage, no cut-off and it meet Table 1. |
9．Environmental Characteristics
NO. | Item | Measurement condition | Requirement |
9 – 1 | Humidity | After being placed in a chamber with 90-95% R.H. at 40±2℃ for 100 hours and then being placed in room temperature for 1 hour, filter shall be measured. | It shall meet Table 1. |
9 – 2 | Resistance to Solder Heat | It shall meet Table 1. |
Lead terminals are immersed up to 1.5mm from filter’s body in soldering bath of 350± 10℃, for 3±0.5 sec. And then filter shall be measured after being placed in room temperature for 1 hour. | |||
9 – 3 | High Temperature | After being placed in a chamber with 80±2 ℃,for 100 hours and then being placed in room temperature for 1 hour , filter shall be measured. | It shall meet Table1 |
9 – 4 | Low Temperature | After being placed in a chamber with -20±2 ℃,for 100 hours and then being placed in room temperature for 1 hour, filter shall be measured. | It shall meet Table 1 |
9 – 5 | Heat Shock | After being kept at room temperature, filter shall be placed at temperature of –55 ℃ , for 30 minutes, then be placed at temperature. 85 ℃, for 30 minutes. After that returned to –55 ℃ again. Repeated above cycle for 5 times. After being kept in room temp. for 1 hour, filter shall be measured | It shall meet Table 1 |
10. Reflow conditions
Table 1
Item | Specification |
| Modulation Frequency | 455±1.0KHz |
Demodulated Bandwidth(3dB) | ±4.0KHz min (from 455 kHz) |
| Demodulated Output | 100±40mV. (at 455 kHz) |
Demodulated Distortion Factor | 2.0%Max. |
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