Temperature Sensors - NTC Thermistors

Part Number	Description / PDF	Quantity
NTCS0603E3103HMT Vishay BC Components/Beyshlag/Draloric	THERMISTOR NTC 10KOHM 3610K 0603	70939
ERT-J0EA680J Panasonic	THERMISTOR NTC 68OHM 2800K 0402	9290
B57621C5102K062 TDK EPCOS	THERMISTOR NTC 1KOHM 3420K 1206	1318
2138651635 Woodhead - Molex	NTC RING CBL 3982 M3.5 150MM 10K	1997
NXRT15WB473FA1B030 TOKO / Murata	THERMISTOR NTC 47KOHM 4050K BEAD	4514
NTHS1206N04N2203JE Vishay / Dale	THERM NTC 220KOHM 4247K 1206	0
NTC0805J22K TE Connectivity AMP Connectors	THERMISTOR NTC 22KOHM 0805	0
NTHS0603N01N1003JE Vishay / Dale	THERM NTC 100KOHM 3964K 0603	3368
NTCG064BF473FTBX TDK Corporation	THERMISTOR NTC 47KOHM 4067K 0201	33800
CMFB3550103FNT Cantherm	THERMISTOR NTC 10KOHM 3550K 0805	0
NTCLE100E3474GB0 Vishay BC Components/Beyshlag/Draloric	THERM NTC 470KOHM 4570K BEAD	4299
NCP18XW472J03RB TOKO / Murata	THERM NTC 4.7KOHM 3950K 0603	1687
B57871S0103F002 TDK EPCOS	THERMISTOR NTC 10KOHM 3460K BEAD	4472
NTCLE100E3339JB0A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 33R 5%	0
B57891M0473J000 TDK EPCOS	THERMISTOR NTC 47KOHM 3980K DISC	2000
NKA103C4AR10C Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 10KOHM 3435K BEAD	0
ERT-J0EA680H Panasonic	MULTILAYER NTC CHIP THERMISTOR	7225
701007 TE Connectivity Measurement Specialties	THERMISTOR NTC 5KOHM 3891K BEAD	105
ERT-JZER683F Panasonic	MULTILAYER NTC CHIP THERMISTOR	14279
NHQMM153B380T5 Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 15KOHM 4000K 0603	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

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.