Susumu International U.S.A. -Specialist in Thin Film Technology-

Susumu International U.S.A.-Specialist in Thin Film Technology-

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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
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      • 1.Automotive
      • 2.FA/Robot
      • 3.Measuring Instrument/Medical Instrument
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      • Standard Specification for surface mount chip resistors

      • Recommended land patterns
      • Recommended reflow soldering profile
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      • 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
    • 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
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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 ?
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 ?
A2 They are terminal type designators. D means bottom terminal and E means wrap around terminal.

D Type

E Type

Q3 Is the quantity in packaging designated in a part number? What is the unit for packaging ?
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 ?
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.


Q2 KRL series has 2 terminal type and 4 terminal type. How does their performance differ ?
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 ?
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 ?
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 ?
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 ?
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.


Mounting, packaging
Q1 Where can I find recommended land patterns for KRL series ?
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 ?
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 ?
A3 It is specified within +/-0.5% for KRL series.
Q4 Is packaging tape paper or embossed ?
A4 KRL series are packaged in embossed tape. For details, refer to Product technical report.

Technical Information

Technical
Information TOP

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
  • 1. Automotive
  • 2. FA/Robot
  • 3. Measuring Instrument /
    Medical Instrument
  • 4. Consumer equipment
Product Technical Report
  • 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 High frequency surface mount components
    • Recommended reflow soldering profile
    • Dimensions of the packaging reel
    • Dimensions of the packaging tape
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

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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
  • 8.Various methods of current sensing and advantage of current sensing resistors
  • 9.Application and recommended usage of current sensing resistors

Application Information

  • 1.Automotive
  • 2.FA/Robot
  • 3.Measuring Instrument/Medical Instrument
  • 4.Consumer equipment

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

Technical FAQ

  • High Precision Thin Film Chip Resistors
  • Current sensing chip resistors

Company Profile

About Susumu

  • Principle
  • Susumu Way
  • Profile
  • Locations
  • Organization
  • Company history

Activity Contents

  • Exhibition Activities

Environmental Activities

ISO Certification and Procurement

  • Susumu's 「ISO Certified」
  • Policy on Conflict Minerals

About Environment

  • Environmental Policy
  • The materials used in our chip resistors
  • Our commitment to RoHS compliance
  • On Environment

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Susumu International U.S.A. -Specialist in Thin Film Technology-
Susumu Thin Film Specialist and Innovator