Temperature Sensors - NTC Thermistors

Part Number	Description / PDF	Quantity
08M5002FF Vishay BC Components/Beyshlag/Draloric	NTC THERMISTORS	0
EC95S102W Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 1KOHM BEAD	0
NHQ304B435T5 Thermometrics (Amphenol Advanced Sensors)	THERM NTC 300KOHM 4350K 1206	0
RL2012-5506-120-D1 Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 10KOHM 4356K DISC	98
NTHS0603N01N5002FE Vishay / Dale	NTHS-0603N01 50K 1% E3	2460
ETP10005 EI Sensor Technologies	THERMISTOR PROBE, VINYL, 10K 1%,	500
NTCG064EF683FTBX TDK Corporation	THERMISTOR NTC 68KOHM 4067K 0201	11223
RB252L0J Wickmann / Littelfuse	THERM NTC 2.5KOHM 4100K 0603	0
121-103FAJ-Q01 Honeywell Sensing and Productivity Solutions	THERM NTC 10KOHM 3669K PROBE	49
NTCLE100E3104GB0A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 100K 2%	0
NTCS0402E3104GHT Vishay BC Components/Beyshlag/Draloric	THERM NTC 100KOHM 3950K 0402	0
NTCLE100E3109GT2A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 10R 2% 2E	0
B58100A0406A000 TDK EPCOS	THERMISTOR NTC 10KOHM 4006K CLIP	0
RL3004-291-97-D1 Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 500OHM 3972K DISC	4998
NTCS0402E3472HMT Vishay BC Components/Beyshlag/Draloric	THERM NTC 4.7KOHM 3595K 0402	6792
103JG1KE Wickmann / Littelfuse	THERMISTOR NTC 10KOHM 3892K DO35	1053
NTCLE100E3152HT2A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 1K5 3% 2E	0
NCU18XH103D6SRB TOKO / Murata	SENSOR THERMISTOR NTC	2935
NTCLE100E3473JB0A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 47K 5%	0
MC65F103C Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 10KOHM 3969K BEAD	6423

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.