Temperature Sensors - NTC Thermistors

Part Number	Description / PDF	Quantity
01M5001JF Vishay / Dale	THERMISTOR NTC 5KOHM BEAD	0
ERT-J0EV104J Panasonic	THERM NTC 100KOHM 4700K 0402	36970
NXFT15XH103FA2B070 TOKO / Murata	THERMISTOR NTC 10KOHM 3380K BEAD	0
B57442V5472J062 TDK EPCOS	THERM NTC 4.7KOHM 3590K 0805	0
NB21K00103JBB Elco (AVX)	THERMISTOR NTC 10KOHM 3630K 0603	3800
NTCG104BH102JT1 TDK Corporation	THERMISTOR NTC 1KOHM 4096K 0402	9449
01T6801FF Vishay BC Components/Beyshlag/Draloric	NTC THERMISTORS	0
RL0503-2890-95-MS Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 5KOHM BEAD	1676
NC20MC0102KBA Elco (AVX)	THERMISTOR NTC 1KOHM 3910K 1206	0
A1004BT22P0 TE Connectivity Measurement Specialties	THERMISTOR NTC 10KOHM CYLINDER	90
3006-3079-76-G100 Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 5KOHM DO213AA	0
ERT-JZEP473G Panasonic	MULTILAYER NTC CHIP THERMISTOR	14906
GA100K6MBD1 TE Connectivity Measurement Specialties	THERM NTC 100KOHM 4261K BEAD	47
NTCLE213E3103FHT1 Vishay BC Components/Beyshlag/Draloric	THERMISTOR NTC 10KOHM 3984K BEAD	0
502JH1K Wickmann / Littelfuse	THERMISTOR NTC 5KOHM 3892K DO41	0
GS201B1K Wickmann / Littelfuse	THERMISTOR NTC 200OHM 3000K BEAD	0
KT203J2 Wickmann / Littelfuse	THERMISTOR NTC 20KOHM 3892K BEAD	0
NTHS1206N02N1052KE Vishay / Dale	THERM NTC 10.5KOHM 3477K 1206	0
DKF103N5 Thermometrics (Amphenol Advanced Sensors)	THERMISTOR NTC 10KOHM 3960K DO35	2350
NTCG204AH473JT1S TDK Corporation	NTC,47K,5%,0805,AEC-Q200,150	4000

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.