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Temperature Sensors - NTC Thermistors

Image Part Number Description / PDF Quantity Rfq
NTCG104LH154JTDS

NTCG104LH154JTDS

TDK Corporation

THERM NTC 150KOHM 4485K 0402

0
NTCG163JF103HTDS

NTCG163JF103HTDS

TDK Corporation

THERMISTOR NTC 10KOHM 3380K 0603

4000
NTCG164BH472JT1

NTCG164BH472JT1

TDK Corporation

THERM NTC 4.7KOHM 4067K 0603

3075
NTCG103UH103JT1

NTCG103UH103JT1

TDK Corporation

THERMISTOR NTC 10KOHM 3900K 0402

9477
NTCG104BF473HTDSX

NTCG104BF473HTDSX

TDK Corporation

NTC,47K,3%,0402,AEC-Q200,125

20000
NTCG104BH102JT1

NTCG104BH102JT1

TDK Corporation

THERMISTOR NTC 1KOHM 4096K 0402

9449
NTCG204AH473JT1S

NTCG204AH473JT1S

TDK Corporation

NTC,47K,5%,0805,AEC-Q200,150

4000
NTCG104BF473HT1SX

NTCG104BF473HT1SX

TDK Corporation

NTC,47K,3%,0402,AEC-Q200,150

19445
NTCG164KF104FT1

NTCG164KF104FT1

TDK Corporation

THERM NTC 100KOHM 4419K 0603

2809
NTCG063JF103HTB

NTCG063JF103HTB

TDK Corporation

THERMISTOR NTC 10KOHM 3380K 0201

0
NTCSP163JF103FT1S

NTCSP163JF103FT1S

TDK Corporation

NTC,10K,1%,0603,AEC-Q200,EPOXY

7900
NTCG104KH302HT1

NTCG104KH302HT1

TDK Corporation

THERMISTOR NTC 3KOHM 4100K 0402

0
NTCG203EH681JT1

NTCG203EH681JT1

TDK Corporation

THERMISTOR NTC 680OHM 3232K 0805

2255
NTCG104LH104JT1S

NTCG104LH104JT1S

TDK Corporation

NTC,100K,5%,0402,AEC-Q200,150

19980
NTCG164BH302JT1

NTCG164BH302JT1

TDK Corporation

CASE EIA 0603 B= 3% ,3000Ω 5%

0
NTCG164LH223HT1

NTCG164LH223HT1

TDK Corporation

THERMISTOR NTC 22KOHM 4885K 0603

2861
NTCG103LH472JT1

NTCG103LH472JT1

TDK Corporation

THERMISTOR NTC 4.7KOHM 0402

7607
NTCG104LH683JT1

NTCG104LH683JT1

TDK Corporation

THERMISTOR NTC 68KOHM 4485K 0402

9619
NTCG104KF104FT1

NTCG104KF104FT1

TDK Corporation

THERM NTC 100KOHM 4550K 0402

80
NTCSP104KF104FT1S

NTCSP104KF104FT1S

TDK Corporation

NTC,100K,1%,0402,AEC-Q200,EPOXY

19963

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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