Temperature Sensors - NTC Thermistors

Part Number	Description / PDF	Quantity
NTHS0805N01N4702KE Vishay BC Components/Beyshlag/Draloric	NTHS-0805N01 47K 10% E58 E3	0
NB12K00103KBB Elco (AVX)	THERMISTOR NTC 10KOHM 3630K 0805	6174
EC95R102W Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 1KOHM BEAD	0
EC95F103ZN Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 10KOHM 3969K BEAD	228
NTCLE213E3104GXB0 Vishay BC Components/Beyshlag/Draloric	THERM NTC 100KOHM 4190K BEAD	4483
NHQM504B435T5 Thermometrics (Amphenol Advanced Sensors)	THERM NTC 500KOHM 4350K 0805	0
NCU18WF104D60RB TOKO / Murata	SENSOR THERMISTOR NTC	15990
NTCG063JF103HTB TDK Corporation	THERMISTOR NTC 10KOHM 3380K 0201	0
B57551G0502G000 TDK EPCOS	THERMISTOR NTC 5KOHM 3480K BEAD	0
B57234S0220M051 TDK EPCOS	THERMISTOR NTC 22OHM 3300K	0
NTCS0805E3103FHT Vishay BC Components/Beyshlag/Draloric	THERMISTOR NTC 10KOHM 3940K 0805	6957
NTCSP163JF103FT1S TDK Corporation	NTC,10K,1%,0603,AEC-Q200,EPOXY	7900
NTHS0805N01N5002JU Vishay / Dale	THERMISTOR NTC 50KOHM 3964K 0805	0
RA402L0J Wickmann / Littelfuse	THERMISTOR NTC 4KOHM 4100K 0402	0
NC20KC0180MBA Elco (AVX)	THERMISTOR NTC 18OHM 3470K 1206	0
JS4833 Thermometrics (Amphenol Advanced Sensors)	CABLE PROBE ASSEMBLY, BRASS, 148	989
NTCG104KH302HT1 TDK Corporation	THERMISTOR NTC 3KOHM 4100K 0402	0
TT05-10KC3-1S-T105-1500 TEWA Sensors LLC	NTC 10K OHM 1%, B 3977, WATERP	119
NTC0805J3K0 TE Connectivity AMP Connectors	THERMISTOR NTC 3KOHM 0805	0
HM203J1A Wickmann / Littelfuse	THERMISTOR NTC 20KOHM 3892K MELF	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.