Temperature Sensors - NTC Thermistors

Part Number	Description / PDF	Quantity
NTCLE100E3123HT1A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 12K 3% 1E	0
ND03N00103K-- Elco (AVX)	THERMISTOR NTC 10KOHM 4080K DISC	0
NXRT15WF104FA3A016 TOKO / Murata	THERM NTC 100KOHM 4250K BEAD	0
NTCG164LH223HT1 TDK Corporation	THERMISTOR NTC 22KOHM 4885K 0603	2861
GR102F1K Wickmann / Littelfuse	THERMISTOR NTC 1KOHM 3499K BEAD	0
NTHS1206N02N6801JU Vishay / Dale	THERM NTC 6.8KOHM 3477K 1206	0
NHQ474B435T5 Thermometrics (Amphenol Advanced Sensors)	THERM NTC 470KOHM 4350K 1206	0
NTCS0402E3474JHT Vishay / Dale	NTC SMD 0402, 470KOHM, 5%, B25/8	0
B57358V2104J360 TDK EPCOS	NTC THERMISTOR 0603 100K J60 B-4	0
B57541G1103H005 TDK EPCOS	THERMISTOR NTC 10KOHM 3612K BEAD	0
NTCS0805E3103HMT Vishay BC Components/Beyshlag/Draloric	THERMISTOR NTC 10KOHM 3570K 0805	33940
NHQM472B355T10 Thermometrics (Amphenol Advanced Sensors)	THERM NTC 4.7KOHM 3550K 0805	0
NTCS0402E3103GL1T Vishay BC Components/Beyshlag/Draloric	NTC SMD 0402 NISN 10K 2% LOW B	0
NTCS0805E3472GMT Vishay BC Components/Beyshlag/Draloric	THERM NTC 4.7KOHM 3500K 0805	5120
NTCS0402E3104HHT Vishay BC Components/Beyshlag/Draloric	THERM NTC 100KOHM 3950K 0402	0
111-202CAK-H01 Honeywell Sensing and Productivity Solutions	THERMISTOR NTC 2KOHM 3068K BEAD	921
ERT-J0ET333J Panasonic	MULTILAYER NTC CHIP THERMISTOR	9000
B58100A0414A000 TDK EPCOS	THERM NTC 1.465KOHM 3670K PROBE	8
B57234S0150M051 TDK EPCOS	THERMISTOR NTC 15OHM 3000K	1
NTCLE213E3303FHT1 Vishay BC Components/Beyshlag/Draloric	THERMISTOR NTC 30KOHM 3935K 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.