Temperature Sensors - NTC Thermistors

Part Number	Description / PDF	Quantity
ERT-J0EA151H Panasonic	MULTILAYER NTC CHIP THERMISTOR	7293
NTCALUG01T103G501 Vishay BC Components/Beyshlag/Draloric	THERM NTC 10KOHM 3984K RING LUG	802
NTCS0805E3474FXT Vishay BC Components/Beyshlag/Draloric	THERM NTC 470KOHM 4025K 0805	18181
B57356V5473J260 TDK EPCOS	THERMISTOR NTC 47KOHM 4050K 0603	0
JC103C3R5/F Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 10KOHM 3960K CLIP	8
B57164K0221K000 TDK EPCOS	THERMISTOR NTC 220OHM 3200K DISC	1600
CMFA3950104FNT Cantherm	THERM NTC 100KOHM 3950K 0603	1214
TTS-1KC3-BZ TEWA Sensors LLC	THERMISTOR NTC 1KOHM 3977K BEAD	968
NTCG064EF683JTBX TDK Corporation	THERMISTOR NTC 68KOHM 4485K 0201	0
NTCG104LH333JT1 TDK Corporation	THERMISTOR NTC 33KOHM 4485K 0402	19380
NTHS0603N02N6801KE Vishay / Dale	THERM NTC 6.8KOHM 3477K 0603	0
NXFT15XV103FEAB040 TOKO / Murata	NTC TEMP SENSOR	0
NTCLE203E3472FB0A Vishay BC Components/Beyshlag/Draloric	NTC NI 0.4 LEAD 4K7 1%	0
TN10-3V682JT Mitsubishi Materials U.S.A	NTC CHIP THERMISTOR 6.8KOHM 3900	4000
NTCLE213E3104HXB0 Vishay BC Components/Beyshlag/Draloric	THERM NTC 100KOHM 4190K BEAD	926
MF52F503F3950 Cantherm	THERMISTOR NTC 50KOHM 3950K BEAD	0
NTCALUG02A103G Vishay BC Components/Beyshlag/Draloric	THERM NTC 10KOHM 3984K RING LUG	3060
NKA502C4AR2C Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 5KOHM 3435K BEAD	918
DC95F202W Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 2KOHM 3969K BEAD	2825
1DC502J-EC Ametherm	THERMISTOR NTC 5KOHM 3934K DISC	1

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.