Temperature Sensors - NTC Thermistors

Part Number	Description / PDF	Quantity
NTCG104BF683FTDSX TDK Corporation	THERMISTOR NTC 68KOHM 4085K 0402	4433
NTCS0402E3103HLT Vishay BC Components/Beyshlag/Draloric	THERMISTOR NTC 10KOHM 3490K 0402	0
NTCG164LH683HT1 TDK Corporation	THERMISTOR NTC 68KOHM 4885K 0603	3380
MA100GG103C Thermometrics (Amphenol Advanced Sensors)	THERM NTC 10KOHM 3969K PROBE	2301
B57541G1103G000 TDK EPCOS	THERMISTOR NTC 10KOHM 3478K BEAD	0
ERT-J1VV104JM Panasonic	THERM NTC 100KOHM 4700K 0603	1713
MM222E1K Wickmann / Littelfuse	THERM NTC 2.186KOHM 3320K MELF	0
111-172CAG-H02 Honeywell Sensing and Productivity Solutions	THERMISTOR NTC 1.7KOHM BEAD	0
B57471V2104J062 TDK EPCOS	THERM NTC 100KOHM 4386K 0805	4882
NTCLE100E3472GB0 Vishay BC Components/Beyshlag/Draloric	THERM NTC 4.7KOHM 3977K BEAD	985
TTS-30KC6-BG TEWA Sensors LLC	THERMISTOR NTC 30KOHM 4260K BEAD	489
DKA502N3 Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 5KOHM 3540K DO35	2471
NTCALUG03A473HC Vishay BC Components/Beyshlag/Draloric	THERM NTC 47KOHM 3740K RING LUG	954
NTCLE100E3479JT2A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 47R 5% 2E	0
NTCLE100E3222GB0A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 2K2 2%	0
MF11-0017010 Cantherm	THERMISTOR NTC 170OHM 3000K DISC	0
RL1005-82-59-D1 Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 125OHM 3096K DISC	0
JI-103C1R2-L301 Thermometrics (Amphenol Advanced Sensors)	THERM NTC 10KOHM 3977K PROBE	189
RL1007-162.3K-138-D1 Thermometrics (Amphenol Advanced Sensors)	THERM NTC 300KOHM 4561K DISC	0
ERT-J1VA330H Panasonic	MULTILAYER NTC CHIP THERMISTOR	6920

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.