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NTC/PTC Thermistors for Automotive

NTC/PTC Thermistors for Automotive

Product catalog summary

Overview: This document provides comprehensive technical specifications and guidelines for NTC and PTC thermistors used in automotive applications. It covers product specifications, test methods, handling precautions, and compliance with EU RoHS standards.

Specifications: The document details specifications for NTC thermistors used for temperature compensation and PTC thermistors for overcurrent protection. It includes dimensions, resistance values, temperature characteristics, and emphasizes the importance of approving product specifications before ordering.

Procedures: Test methods for evaluating thermistor performance include measuring zero-power resistance, B-constant, thermal dissipation constant, and thermal time constant. Procedures for soldering, mounting, and handling are described to prevent damage or malfunction.

Norms and Standards: Thermistors meet AEC-Q200 rev.D standards, ensuring reliability and stability in automotive environments. Adherence to these standards is crucial for maintaining product performance and safety.

Recommendations: Users should carefully read ratings and cautions to prevent issues like smoking or burning. Verifying product specifications and using approval sheets for transactions is recommended to ensure compliance with specified requirements.

Key Data: Detailed tables and charts illustrate resistance-temperature, current-voltage, and current-time characteristics of thermistors, aiding in understanding their performance and application under various conditions.

Critical Information: Selecting the correct resistance tolerance, temperature characteristics, and packaging options is vital for specific automotive applications. High accuracy and long-term stability in thermistor performance are emphasized.

Features: Thermistors offer excellent solderability, environmental stability, high accuracy, and are lead-free, enhancing environmental safety. They are suitable for flow/reflow soldering and conductive glue mounting.

Applications: Used in car audio, navigation, engine control units, motor driving circuits, and temperature compensation for various circuits. Suitable for high power devices and circuits requiring low temperature mounting.

Test Methods and Standards: Conforms to MIL-STD-202 for resistance to soldering heat, mechanical shock, and vibration. Specifications include resistance change limits and B-constant change limits under various test conditions.

Handling and Storage: Cautions for storage and operating conditions emphasize avoiding corrosive gases, volatile environments, and extreme temperatures. Recommendations include temperature and humidity limits and a first-in, first-out stocking system.

Soldering and Mounting: Guidelines include allowable temperature and time for soldering, with specific conditions for reflow and flow soldering. Recommendations for adhesive application and curing ensure proper mounting and avoid damage.

Conclusion: The document serves as a comprehensive guide for the specifications, applications, and handling of NTC and PTC thermistors for automotive use, ensuring high performance and reliability in various environmental conditions.

Catalog excerpts

NTC/PTC Thermistors for Automotive

Open the catalog to page 1

Open the catalog to page 2

!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. • This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Contents Product speciﬁcations are as of February 2020. Part Numbering Basic Characteristics of NTC Thermistor Basic Characteristics of POSISTOR 1 NTC Thermistor Chip Type 0402 (1005) Size (Meet AEC-Q200 rev.D) 2 NTC Thermistor Chip Type 0603 (1608) Size (Meet...

Open the catalog to page 3

!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. • This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. o Part Numbering NTC Thermistors for Temperature Compensation Chip Type 0S (Part Number) 5Resistance Expressed by three ﬁgures. The unit is ohm (Ω). The ﬁrst and second ﬁgures are signiﬁcant digits, and the third ﬁgure expresses the number of zeros that follow...

Open the catalog to page 4

!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. • This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. NTC Thermistor for Temperature Sensor Thermo String Type NXF (Part Number) Code NTC Thermistors Sensor Thermo String Type Lead Wire Type ø0.3mm Copper Lead Wire with Polyurethane Coat ø0.3mm Nickel Copper Lead Wire with Modiﬁed Polyester Coat 8Shape of the Lead...

Open the catalog to page 5

!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. • This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. NTC Thermistor for Temperature Sensor/Lead Type NXR (Part Number) Code NTC Thermistor Sensor/Lead Type Lead Wire Type Lead Type: ø0.4mm Copper-clad Fe Wire, Tinned Lead Insulation Type: ø0.46mm Cu Wire with Coat Individual Speciﬁcations Automotive Type 8Shape...

Open the catalog to page 6

!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. • This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. PTC Thermistors (POSISTOR) for Overheat Sensing Chip Type PR (Part Number) 5Resistance Expressed by three ﬁgures. The unit is ohm (Ω). The ﬁrst and second ﬁgures are signiﬁcant digits, and the third ﬁgure expresses the number of zeros that follow the two ﬁgures....

Open the catalog to page 7

!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. • This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. PTC Thermistors (POSISTOR) for Overcurrent Protection Lead Type PT (Part Number) Expressed by three-digit alphanumeric. The unit is ohm (Ω). The ﬁrst and second ﬁgures are signiﬁcant digits, and the third ﬁgure expresses the number of zeros that follow the two...

Open the catalog to page 8

!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. • This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Basic Characteristics of NTC Thermistor Basic Characteristics 1. Zero-power Resistance of Thermistor: R Resistance vs. Temperature 102 Resistance vs. Temperature Characteristics, R/R25 Measured by zero-power in speciﬁed ambient temperatures. R=R0 expB (1/T-1/T0)...

Open the catalog to page 9

!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. • This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Basic Characteristics of POSISTOR Basic Characteristics of POSISTOR Basic Characteristics Although there is a negligible difference between the normal and "Curie Point" temperature, POSISTOR shows almost constant resistance-temperature characteristics. Yet they...

Open the catalog to page 10

!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. • This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. Chip Type 0402 (1005) Size (Meet AEC-Q200 rev.D) 0.5±0.05 Chip NTC Thermistors have Ni barrier termination, provide excellent solderability and offer high stability in environment due to unique inner construction. Available Market is Automotive market where request...

Open the catalog to page 11

!Note • Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc. • This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering. NTC Thermistors for Automotive Chip Type 0603 (1608) Size (Meet AEC-Q200 rev.D) 0.8±0.15 Chip NTC Thermistors have Ni barrier termination, provide excellent solderability and offer high stability in environment due to unique inner construction. Available Market...

Open the catalog to page 12

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