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Temperature Sensors - NTC Thermistors

Image Part Number Description / PDF Quantity Rfq
NTCG104BH153HT1

NTCG104BH153HT1

TDK Corporation

CASE EIA 0402 B= 3% ,15KΩ 3%

0
NTCG163EH101HTDS

NTCG163EH101HTDS

TDK Corporation

THERMISTOR NTC 100OHM 3244K 0603

7512
NTCSP164BF473FT1SX

NTCSP164BF473FT1SX

TDK Corporation

NTC,47K,1%,0603,AEC-Q200,EPOXY

7990
NTCG104QH224JT1

NTCG104QH224JT1

TDK Corporation

THERM NTC 220KOHM 4661K 0402

13819
NTCG104QH474JT1

NTCG104QH474JT1

TDK Corporation

THERM NTC 470KOHM 4661K 0402

9627
NTCDS3SG104HC3NB

NTCDS3SG104HC3NB

TDK Corporation

NTC AXIAL LEAD, 3X1.8, 100K/3%,

200
NTCG164KF104FT1S

NTCG164KF104FT1S

TDK Corporation

THERM NTC 100KOHM 4419K 0603

1318
NTCG164BH103JT1

NTCG164BH103JT1

TDK Corporation

THERMISTOR NTC 10KOHM 4067K 0603

5358
NTCG104EF104HTDSX

NTCG104EF104HTDSX

TDK Corporation

NTC,100K,3%,0402,AEC-Q200,125

19900
NTCDS3SG104GC4NB

NTCDS3SG104GC4NB

TDK Corporation

THERM NTC 100KOHM 3850K DO35

0
NTCG064BH103JTB

NTCG064BH103JTB

TDK Corporation

THERMISTOR NTC 10KOHM 3380K 0201

0
NTCRP3VG332JDGBEA

NTCRP3VG332JDGBEA

TDK Corporation

NTC ASSEMBLY, SMALL CASE 200-C,

675
NTCG063JF103FTB

NTCG063JF103FTB

TDK Corporation

THERMISTOR NTC 10KOHM 3380K 0201

11041
NTCG163JH103HT1

NTCG163JH103HT1

TDK Corporation

THERMISTOR NTC 10KOHM 3380K 0603

3900
NTCG064EF683FTBX

NTCG064EF683FTBX

TDK Corporation

THERMISTOR NTC 68KOHM 4067K 0201

11223
NTCGP3UH503HCZCCA

NTCGP3UH503HCZCCA

TDK Corporation

NTC ASSEMBLY, LUG TERMINAL, 50K/

890
NTCG104BH682JT1

NTCG104BH682JT1

TDK Corporation

THERM NTC 6.8KOHM 4067K 0402

8972
NTCG163JF103FTDS

NTCG163JF103FTDS

TDK Corporation

THERMISTOR NTC 10KOHM 3380K 0603

0
NTCG163NH221JT1

NTCG163NH221JT1

TDK Corporation

THERMISTOR NTC 220OHM 0603

3543
NTCG064BF473FTBX

NTCG064BF473FTBX

TDK Corporation

THERMISTOR NTC 47KOHM 4067K 0201

33800

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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