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Temperature Sensors - NTC Thermistors

Image Part Number Description / PDF Quantity Rfq
NTCG203FH222JT1

NTCG203FH222JT1

TDK Corporation

THERM NTC 2.2KOHM 3248K 0805

2754
NTCG103EH400JT1

NTCG103EH400JT1

TDK Corporation

THERMISTOR NTC 40OHM 3244K 0402

8535
NTCG104BH102HT1

NTCG104BH102HT1

TDK Corporation

THERMISTOR NTC 1KOHM 4096K 0402

17978
NTCDS4AG502HC4NB

NTCDS4AG502HC4NB

TDK Corporation

NTC AXIAL LEAD, 4X2.0, 5K/3%, 40

200
NTCG063UH103HTBX

NTCG063UH103HTBX

TDK Corporation

THERMISTOR NTC 10KOHM 3900K 0201

9653
NTCDS3UG942HC4NB

NTCDS3UG942HC4NB

TDK Corporation

NTC AXIAL LEAD, 4X2.0, 9.395K/3%

290
NTCG063JF103JTB

NTCG063JF103JTB

TDK Corporation

THERMISTOR NTC 10KOHM 3380K 0201

14310
NTCG163EH300JT1

NTCG163EH300JT1

TDK Corporation

THERMISTOR NTC 30OHM 3244K 0603

5
NTCG103UH103HT1

NTCG103UH103HT1

TDK Corporation

THERMISTOR NTC 10KOHM 3380K 0402

10270
NTCG164LH104HT1S

NTCG164LH104HT1S

TDK Corporation

CASE EIA 0603 B= 3% ,10Ω 3%

0
NTCG103EH470JT1

NTCG103EH470JT1

TDK Corporation

THERMISTOR NTC 47OHM 3244K 0402

4589
NTCG203FH332JT1

NTCG203FH332JT1

TDK Corporation

THERM NTC 3.3KOHM 3248K 0805

1589
NTCG104LH223JT1

NTCG104LH223JT1

TDK Corporation

THERMISTOR NTC 22KOHM 4485K 0402

7277
NTCG103JX103DT1

NTCG103JX103DT1

TDK Corporation

THERMISTOR NTC 10KOHM 3380K 0402

14175
NTCDS4AG503HC3NB

NTCDS4AG503HC3NB

TDK Corporation

NTC AXIAL LEAD, 3X1.8, 50K/3%, 4

193
NTCG103JF103JT1S

NTCG103JF103JT1S

TDK Corporation

NTC,10K,5%,0402,AEC-Q200,150

19700
NTCGP3UH503HCJBAA

NTCGP3UH503HCJBAA

TDK Corporation

NTC ASSEMBLY, RESIN COATED, 50K/

0
NTCG164QF474JTDS

NTCG164QF474JTDS

TDK Corporation

NTC,470K,5%,0603,AEC-Q200,125

3940
NTCG164BH153JT1

NTCG164BH153JT1

TDK Corporation

THERMISTOR NTC 15KOHM 4067K 0603

3880
NTCG064BF473JTBX

NTCG064BF473JTBX

TDK Corporation

THERMISTOR NTC 47KOHM 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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