Temperature Sensors - NTC Thermistors

Part Number	Description / PDF	Quantity
ERT-J0ER682H Panasonic	MULTILAYER NTC CHIP THERMISTOR	7882
RL2008-178-85-D1 Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 300OHM 3772K DISC	0
TTS-30KC6-BZ TEWA Sensors LLC	THERMISTOR NTC 30KOHM 4260K BEAD	230
NTCLE203E3222GB0A Vishay BC Components/Beyshlag/Draloric	NTC NI 0.4 LEAD 2K2 2%	0
ERT-J0ET472J Panasonic	THERM NTC 4.7KOHM 4500K 0402	6274
NTCG104BH153HT1 TDK Corporation	CASE EIA 0402 B= 3% ,15KΩ 3%	0
NTCLE100E3224GB0 Vishay BC Components/Beyshlag/Draloric	THERM NTC 220KOHM 4370K BEAD	4251
2146551633 Woodhead - Molex	NTC RING CBL 3982 M3.5 75MM 10K	1969
B57820M0102A003 TDK EPCOS	THERMISTOR NTC 1KOHM 3560K COIN	0
B57541G1104F000 TDK EPCOS	THERM NTC 100KOHM 4072K BEAD	0
NKA202C9AR1C Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 2KOHM 3627K BEAD	0
NTHS1206N02N6801KU Vishay / Dale	THERM NTC 6.8KOHM 3477K 1206	0
GA10K4D25 TE Connectivity Measurement Specialties	THERMISTOR NTC 10KOHM 3694K BEAD	202
B57250V2473J560 TDK EPCOS	THERMISTOR NTC 47KOHM 4050K 0402	0
NCP15XH103F03RC TOKO / Murata	THERMISTOR NTC 10KOHM 3380K 0402	477546
NTHS0402N01N1003JF Vishay / Dale	THERM NTC 100KOHM 3964K 0402	0
NTHS0805N01N5602JE Vishay / Dale	THERMISTOR NTC 56KOHM 3964K 0805	0
NTCLE100E3339HB0A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 33R 3%	0
NTCLE203E3104HB0A Vishay BC Components/Beyshlag/Draloric	NTC NI 0.4 LEAD 100K 3%	0
NTHS0805N02N7001JE Vishay BC Components/Beyshlag/Draloric	NTHS-0805N02 7K 5% E58 E3	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.