Temperature Sensors - NTC Thermistors

Part Number	Description / PDF	Quantity
NTCLE100E3689JB0A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 68R 5%	0
DC95F232WN Thermometrics (Amphenol Advanced Sensors)	THERM NTC 2.252KOHM 3969K BEAD	500
NXRT15WF104FA5B030 TOKO / Murata	THERM NTC 100KOHM 4250K BEAD	16235
ERT-J0EG103HM Panasonic	THERMISTOR NTC 10KOHM 3380K 0402	9880
RB103E0J Wickmann / Littelfuse	THERMISTOR NTC 10KOHM 3435K 0603	0
MF51E2252F3950C Cantherm	THERMISTOR NTC 22.5KOHM BEAD	445
204JG1K Wickmann / Littelfuse	THERM NTC 200KOHM 3892K DO35	695
PX102J2 Wickmann / Littelfuse	THERMISTOR NTC 1KOHM 3892K BEAD	0
NTHS0805N17N2003JE Vishay / Dale	THERM NTC 200KOHM 4247K 0805	125
NTHS0805N11N2002JF Vishay / Dale	THERMISTOR NTC 20KOHM 3700K 0805	0
B57891M0472K000 TDK EPCOS	THERM NTC 4.7KOHM 3980K DISC	3570
B57891M0334K000 TDK EPCOS	THERM NTC 330KOHM 4830K DISC	0
B57867S0202J140 TDK EPCOS	THERMISTOR NTC 2KOHM 3560K BEAD	0
NTCASCWE3103J Vishay BC Components/Beyshlag/Draloric	THERMISTOR NTC 10KOHM 3977K STUD	534
NHQMM333B400T10 Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 33KOHM 4000K 0603	0
NTCS0805E3334JHT Vishay BC Components/Beyshlag/Draloric	THERM NTC 330KOHM 3930K 0805	5394
NTCG163EH101HTDS TDK Corporation	THERMISTOR NTC 100OHM 3244K 0603	7512
TTS-2.2KC3-BG TEWA Sensors LLC	THERM NTC 2.252KOHM 3977K BEAD	212
192-102DEW-A01 Honeywell Sensing and Productivity Solutions	THERMISTOR NTC 1KOHM 3260K BEAD	358
DC95G503ZN Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 50KOHM 4252K BEAD	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.