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Temperature Sensors - NTC Thermistors

Image Part Number Description / PDF Quantity Rfq
NTCG163JX103DTDS

NTCG163JX103DTDS

TDK Corporation

THERMISTOR NTC 10KOHM 3380K 0603

281
NTCG104BF683HT1X

NTCG104BF683HT1X

TDK Corporation

THERMISTOR NTC 68KOHM 4085K 0402

14915
NTCG164BH332JT1

NTCG164BH332JT1

TDK Corporation

THERM NTC 3.3KOHM 4067K 0603

3930
NTCG104BF473JTDSX

NTCG104BF473JTDSX

TDK Corporation

NTC,47K,5%,0402,AEC-Q200,125

10000
NTCG104LH154HT1

NTCG104LH154HT1

TDK Corporation

THERM NTC 150KOHM 4485K 0402

0
NTCG063JF103FTDS

NTCG063JF103FTDS

TDK Corporation

CASE EIA 0201 B= 1% ,10KΩ 1%

13750
NTCG104LH473HT1

NTCG104LH473HT1

TDK Corporation

THERMISTOR NTC 47KOHM 4485K 0402

0
NTCG163EH101HT1

NTCG163EH101HT1

TDK Corporation

THERMISTOR NTC 100OHM 3244K 0603

1737
NTCG064KH202JTB

NTCG064KH202JTB

TDK Corporation

THERMISTOR NTC 2KOHM 4100K 0201

0
NTCG164BH472JTDS

NTCG164BH472JTDS

TDK Corporation

THERM NTC 4.7KOHM 4096K 0603

17129
NTCG164LH473JT1S

NTCG164LH473JT1S

TDK Corporation

NTC,47K,5%,0603,AEC-Q200,150

8000
NTCG103JF103HTDS

NTCG103JF103HTDS

TDK Corporation

THERMISTOR NTC 10KOHM 3380K 0402

2395
NTCG164BH222JT1

NTCG164BH222JT1

TDK Corporation

THERM NTC 2.2KOHM 4096K 0603

8000
NTCG164LH104JT1S

NTCG164LH104JT1S

TDK Corporation

NTC,100K,5%,0603,AEC-Q200,150

8000
NTCDS3SG104HC4NB

NTCDS3SG104HC4NB

TDK Corporation

NTC AXIAL LEAD, 4X2.0, 100K/3%,

197
NTCG103EH101HT1

NTCG103EH101HT1

TDK Corporation

THERMISTOR NTC 100OHM 3244K 0402

4696
NTCG104BH153JT1

NTCG104BH153JT1

TDK Corporation

CASE EIA 0402 B= 3% ,15KΩ 5%

0
NTCG164LH104JT1

NTCG164LH104JT1

TDK Corporation

THERM NTC 100KOHM 4485K 0603

8497
NTCG164QH334HT1

NTCG164QH334HT1

TDK Corporation

THERM NTC 330KOHM 4661K 0603

3667
NTCG063JF223JTBX

NTCG063JF223JTBX

TDK Corporation

THERMISTOR NTC 22KOHM 4485K 0201

0

Temperature Sensors - NTC Thermistors

1. Overview

NTC (Negative Temperature Coefficient) thermistors are temperature-sensitive resistors whose resistance decreases with increasing temperature. This semiconductor ceramic device utilizes metal oxide materials to achieve precise temperature measurement and control. As a fundamental component in thermal management systems, NTC thermistors play critical roles in modern electronics, automotive engineering, and industrial automation due to their high sensitivity ( : 2000-5000 K) and accuracy ( 0.1 C to 5 C).

2. Major Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Bead ThermistorsSmall size ( 0.5-5mm), fast response (<50ms), glass-encapsulatedMedical probes, liquid temperature monitoring
Disk ThermistorsHigher power rating, epoxy-coated, axial leadsPower supply thermal protection, HVAC systems
Chip ThermistorsSMD packaging, low profile (0.6-3.2mm), RoHS compliantSmartphone thermal management, wearable devices
Glass-EncapsulatedHermetic seal, corrosion resistance, operating temp: -50 C to +300 CAutomotive battery monitoring, aerospace sensors

3. Structure and Composition

Typical NTC thermistor construction includes:

  • Semiconductive ceramic core (Mn-Ni-Co-Ox system)
  • Platinum alloy electrode layers (sintered or plated)
  • Protective epoxy/glass encapsulation (IP67 rated)
  • Lead wires (Cu/Ni alloy, 26-34 AWG)

Manufacturing process involves powder synthesis at 1500 C, isostatic pressing, and controlled atmosphere sintering to achieve desired R-T characteristics.

4. Key Technical Specifications

ParameterDescriptionSignificance
Rated Resistance (R25)Resistance at 25 C (100 -10M range)System compatibility, signal conditioning design
B-Value (K)Material constant (2000-5000K)Determines sensitivity across operating range
ToleranceResistance deviation ( 1% to 15%)Affects measurement accuracy
Operating Temp Range-100 C to +600 C (varies by type)Environmental suitability
Dissipation FactormW/ C (self-heating coefficient)Power consumption and stability considerations

5. Application Fields

Primary industries utilizing NTC thermistors:

  • Industrial: Process control ( 0.5 C accuracy), motor protection
  • Consumer Electronics: Battery management (Li-ion charging), smart thermostats
  • Medical: Patient monitoring (Class F accuracy), lab equipment
  • Automotive: Battery pack thermal monitoring (ISO 14001 compliance), ECU protection

Notable application example: Tesla Model S battery management system uses 48-channel NTC array for cell temperature monitoring ( 1 C accuracy).

6. Leading Manufacturers and Products

ManufacturerKey ProductsTechnical Highlights
Murata ElectronicsNXFT SeriesAutomotive-grade (AEC-Q200), 0.5 C accuracy, -50 C to +150 C range
TE ConnectivityNTCLE SeriesMedical certification (IEC 60601), 3.2mm chip format
Vishay BeyschlagNTCAl SeriesAluminum housing, 50W power handling, IP68 rating

7. Selection Guidelines

Key considerations for NTC thermistor selection:

  1. Resistance-Temperature curve matching application requirements
  2. Environmental factors: humidity (IP rating), vibration (automotive shock specs)
  3. Electrical parameters: operating current (self-heating effects)
  4. Form factor constraints (SMD vs through-hole)
  5. Calibration requirements (standard vs customized R-T tables)

Recommend verifying long-term stability (aging rate <0.2%/year) and RoHS compliance for production applications.

8. Industry Trends

Emerging developments include:

  • Micro-NTC fabrication (MEMS-based, <0.1mm chips)
  • High-temperature stability improvements (up to 600 C operation)
  • Integration with wireless sensor networks (Zigbee/LoRa compatibility)
  • AI-enhanced linearization algorithms (reducing external circuit complexity)

Market growth projected at 8.2% CAGR through 2027 driven by EV battery management demands.

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