Temperature Sensors - NTC Thermistors

Part Number	Description / PDF	Quantity
NTCS0402E3223JMT Vishay BC Components/Beyshlag/Draloric	THERMISTOR NTC 22KOHM 3590K 0402	49162
NTCLG100E2104JT Vishay BC Components/Beyshlag/Draloric	THERM NTC 100KOHM 3977K DO35	24189
EC95F232WN Thermometrics (Amphenol Advanced Sensors)	THERM NTC 22.5KOHM 3969K BEAD	0
RL1007-33.2K-122-D1 Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 60KOHM 4365K DISC	0
NB20K00103MBA Elco (AVX)	THERMISTOR NTC 10KOHM 3630K 1206	0
NTCLE100E3503JB0A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 50K 5%	0
04M3002SFC3 Vishay BC Components/Beyshlag/Draloric	NTC THERMISTORS	0
CMFB3435472JNT Cantherm	THERM NTC 4.7KOHM 3435K 0805	0
B57234S0330M051 TDK EPCOS	THERMISTOR NTC 33OHM 3300K	867
AL03006-269.8K-138-G1 Thermometrics (Amphenol Advanced Sensors)	THERM NTC 500KOHM 4567K DO35	98
ABNTC-0805-104J-4250F-T Abracon	THERM NTC 100KOHM 4250K 0805	0
EC95Y103VN Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 10KOHM 3690K BEAD	0
192-503QET-A01 Honeywell Sensing and Productivity Solutions	THERMISTOR NTC 50KOHM 4138K BEAD	222
ERT-J0ET473J Panasonic	THERM NTC 0402	13121
NTCLE100E3222HT1A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 2K2 3% 1E	0
NTCLE100E3154JB0 Vishay BC Components/Beyshlag/Draloric	THERM NTC 150KOHM 4370K BEAD	512
01T1001FF Vishay BC Components/Beyshlag/Draloric	NTC THERMISTORS	0
02C1000FF Vishay BC Components/Beyshlag/Draloric	NTC THERMISTORS	0
NTCALUG01A104GA Vishay BC Components/Beyshlag/Draloric	NTC LUG 100K 2% 24AWG PTFE 38MM	0
NKA502C1R10C Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 5KOHM 3977K 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.