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How to use chip resistors smartly
- 1.Basic knowledge of resistors
- 2.Manufacturing methods and characteristics of thin film resistors
- 3.Performance characteristics of thin film resistors
- 4.High precision and high reliability
- 5.Trimmable chip resistors and altering resistive values
- 6.Application and recommended usage of thin film chip resistors
- 7.Application and recommended usage of small high power thin film ship resistors
- 8.Various methods of current sensing and advantage of current sensing resistors
- 9.Application and recommended usage of current sensing resistors
- Smart usage of High Frequency Chip Components
- Application Information
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Product Technical Report
Standard Specification for surface mount chip resistors
- Recommended land patterns
- Recommended reflow and flow soldering profile
- Dimensions of the packaging reel
- Dimensions of the packaging tape
Standard Specification for High frequency surface mount components
- Recommended reflow soldering profile
- Dimensions of the packaging tape
- Dimensions of the packaging reel
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High Precision Thin Film Chip Resistors
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- 3. Main characteristics of chip attenuators and PAT series
3. Main characteristics of chip attenuators and PAT series
3.1 Chip attenuator performance characteristics
Attenuation and VSWR
For attenuators, attenuation and voltage standing wave ratio (VSWR) are the two most important performance characteristics
PAT series performance specification
In PAT series, attenuation is offered in 1dB increment. VSWR depends on the frequency and chip size.
PAT series performance data
In the PAT series, the amount of attenuation can be selected in 1 dB steps, and the product names differ. (Refer to the catalog for details). Also, the tolerance is specified for each attenuation, and the actual characteristics are within this specification.The figure below shows PAT1220-C-3dB (3dB product) attenuation and VSWR characteristic data.
3.2 S parameter, important characteristics in high frequency electronics
What is S parameter?
S-parameters are parameters often used in high-frequency circuits, and indicate the relationship between incident waves, transmitted waves, and reflected waves. In a two-port device, it is represented by four parameters, and the relationship is as shown below.
S parameter is measured with Network analyzer
S-parameters can be measured with a network analyzer.When the measurement target (DUT) is an attenuator S11, S21, S12, S22 are as follows
S parameter
DUT: attenuator
S11: Return Loss
S21: Attenuation
S12: Attenuation
S22: Return Loss
Return loss is expressed with VSWR as follows
Return Loss=
20log10(VSWR+1/VSWR-1)(dB)
Technical Information
-
- 1.Basic knowledge of resistors
- 2.Manufacturing methods and characteristics of thin film resistors
- 3.Performance characteristics of thin film resistors
- 4.High precision and high reliability
- 5.Trimmable chip resistors and altering resistive values
- 6.Application and recommended usage of thin film chip resistors
- 7.Application and recommended usage of small high power thin film ship resistors
- 8.Various methods of current sensing and advantage of current sensing resistors
- 9.Application and recommended usage of current sensing resistors
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Standard Specification for surface mount chip resistors
- Recommended land patterns (soldering footprints)
- Recommended reflow and flow soldering profile
- Dimensions of the packaging reel
- Dimensions of the packaging tape
-
Standard Specification for surface mount chip resistors
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- High Precision Thin Film Chip Resistors Current sensing chip resistors
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Activity Contents
Technical Information
How to use chip resistors smartly
- 1.Basic knowledge of resistors
- 2.Manufacturing methods and characteristics of thin film resistors
- 3.Performance characteristics of thin film resistors
- 4.High precision and high reliability
- 5.Trimmable chip resistors and altering resistive values
- 6.Application and recommended usage of thin film chip resistors
- 7.Application and recommended usage of small high power thin film ship resistors
Standard Specification for surface mount chip resistors
- Recommended land patterns
- Recommended reflow and flow soldering profile
- Dimensions of the packaging reel
- Dimensions of the packaging tape
Standard Specification for High frequency surface mount components
Smart usage of High Frequency Chip Components
Susumu Co., Ltd. a Specialist in Thin Film Technology