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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
- Application Information
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Product Technical Report
Standard Specification for surface mount chip resistors
- Recommended land patterns
- Recommended reflow 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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Technical FAQ
High Precision Thin Film Chip Resistors
- ・Part numbering
- ・Performance characteristics
- ・Quality, reliability
- ・Mounting, packaging
Current sensing chip resistors
- ・Part numbering
- ・Performance characteristics
- ・Quality, reliability
- ・Mounting, packaging
- Company Profile
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- Current sensing chip resistors
Technical FAQ Current sensing chip resistors
Part numbering
Q1 | How do part number differs between long side terminal KRL and short side terminal KRL? Is it easy to identify ? |
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A1 | The length of the terminal side is the first 2 (or 3) digit in size designation. For example, long side terminals are 3216, 2012, 11050, short side terminals are 1632, 1220, 5010. |
Q2 | There is E or D after size designation in KRL part numbers, how are they different ? |
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A2 | They are terminal type designators. D means bottom terminal and E means wrap around terminal. |
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Q3 | Is the quantity in packaging designated in a part number? What is the unit for packaging ? |
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A3 | Last 2 digits designate the packaging size. It depends the product series and size. Please refer to catalogue under each series. |
Performance characteristics
Q1 | What is the main difference in performance between long side terminal and short side terminal KRL series ? |
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A1 | Long side terminal products dissipates heat better. Therefore, there is a difference in power ratings in the same size long side and short side terminal products. |
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Q2 | KRL series has 2 terminal type and 4 terminal type. How does their performance differ ? |
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A2 | Four terminal type has separate voltage terminals and voltage can be measured more accurately. Land pattern can be simpler for 4 terminal type. |
Q3 |
KRL series has high temperature type and low EMF (Electro motive force)type. How do we decide which to choose ? |
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A3 | Typically High temp type is chosen because you can use it at higher temperature but if there is a need to control electromotive force (less than 1mV), use low EMF type. |
Quality, reliability
Q1 | Do KRL series meet automotive reliability ? |
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A1 | It is compliant to automotive electronics standard AEC-Q200. It is widely used for automotive electronics. |
Q2 | Is any of the current sensing resistor sulfur tolerant ? |
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A2 | None of Susumu's chip resistors use Ag in their terminals. Therefore they are all sulfur tolerant. |
Q3 | What is the maximum pulse power limits for KRL series ? |
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A3 | It depends on long side or short side terminal and, product size. Sigle pulse maximum power limit chart is shown here for product series. |
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Mounting, packaging
Q1 | Where can I find recommended land patterns for KRL series ? |
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A1 | They are shown in Product technical report. Please be aware that the same size products may have different land pattern in very low resistance products. |
Q2 | Can they be solder dipped ? |
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A2 | E type can be solder dipped (260oC for 10 seconds). It is not recommended for D type because it does not form solder filets and cannot be examined for soldering quality. |
Q3 | How much does resistance change by soldering ? |
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A3 | It is specified within +/-0.5% for KRL series. |
Q4 | Is packaging tape paper or embossed ? |
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A4 | KRL series are packaged in embossed tape. For details, refer to Product technical report. |
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 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
Please feel free to contact us about products,
requesting documents and samples.
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 soldering profile
- Dimensions of the packaging reel
- Dimensions of the packaging tape
Standard Specification for High frequency surface mount components
Environmental Activities
ISO Certification and Procurement
Susumu International U.S.A. -Specialist in Thin Film Technology-