Temperature Sensors - NTC Thermistors

Part Number	Description / PDF	Quantity
NTCG164BH102HT1 TDK Corporation	THERMISTOR NTC 1KOHM 4096K 0603	509
NTCG064KH302JTB TDK Corporation	THERMISTOR NTC 3KOHM 4100K 0201	0
NTCG163EH101JT1 TDK Corporation	THERMISTOR NTC 100OHM 3244K 0603	3947
NTCDS3LG202HC3NB TDK Corporation	NTC AXIAL LEAD, 3X1.8, 2K/3%, 35	193
NTCG104LH333HT1 TDK Corporation	THERMISTOR NTC 33KOHM 4485K 0402	0
NTCG203JH472JT1 TDK Corporation	THERM NTC 4.7KOHM 3392K 0805	795
NTCG103EH400HT1 TDK Corporation	THERMISTOR NTC 40OHM 3244K 0402	0
NTCG163JX103DT1S TDK Corporation	THERMISTOR NTC 10KOHM 3380K 0603	46923
NTCG164BH472HT1 TDK Corporation	THERM NTC 4.7KOHM 4067K 0603	2715
NTCG064EF104FTDSX TDK Corporation	NTC,100K,1%,0201,AEC-Q200,125	29690
NTCG164BH102JT1 TDK Corporation	THERMISTOR NTC 1KOHM 4096K 0603	2574
NTCG163NH331JT1 TDK Corporation	THERMISTOR NTC 330OHM 0603	1963
NTCG104BF473FTDSX TDK Corporation	NTC,47K,1%,0402,AEC-Q200,125	19950
NTCG104BF473JT1X TDK Corporation	THERMISTOR NTC 47KOHM 4485K 0402	0
NTCG103LH472HT1 TDK Corporation	THERM NTC 4.7KOHM 4067K 0402	0
NTCG164QH474JT1 TDK Corporation	THERM NTC 470KOHM 4661K 0603	0
NTCG203NH103JTDS TDK Corporation	THERMISTOR NTC 10KOHM 3590K 0805	20
NTCG103JF103FTDS TDK Corporation	THERMISTOR NTC 10KOHM 3380K 0402	21339
NTCG204CH154JT1 TDK Corporation	THERM NTC 150KOHM 4085K 0805	2160
NTCG164LH154JTDS TDK Corporation	THERM NTC 150KOHM 4485K 0603	7998

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

Type	Functional Characteristics	Application Examples
Bead Thermistors	Small size ( 0.5-5mm), fast response (<50ms), glass-encapsulated	Medical probes, liquid temperature monitoring
Disk Thermistors	Higher power rating, epoxy-coated, axial leads	Power supply thermal protection, HVAC systems
Chip Thermistors	SMD packaging, low profile (0.6-3.2mm), RoHS compliant	Smartphone thermal management, wearable devices
Glass-Encapsulated	Hermetic seal, corrosion resistance, operating temp: -50 C to +300 C	Automotive 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

Parameter	Description	Significance
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
Tolerance	Resistance deviation ( 1% to 15%)	Affects measurement accuracy
Operating Temp Range	-100 C to +600 C (varies by type)	Environmental suitability
Dissipation Factor	mW/ 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

Manufacturer	Key Products	Technical Highlights
Murata Electronics	NXFT Series	Automotive-grade (AEC-Q200), 0.5 C accuracy, -50 C to +150 C range
TE Connectivity	NTCLE Series	Medical certification (IEC 60601), 3.2mm chip format
Vishay Beyschlag	NTCAl Series	Aluminum housing, 50W power handling, IP68 rating

7. Selection Guidelines

Key considerations for NTC thermistor selection:

Resistance-Temperature curve matching application requirements
Environmental factors: humidity (IP rating), vibration (automotive shock specs)
Electrical parameters: operating current (self-heating effects)
Form factor constraints (SMD vs through-hole)
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.