100K ohm NTC 3950 Thermistors

Axial Leaded Glass Encapsulated NTC Thermistor for Temperature Sensing, Measurement, Detection, Indicator, Monitoring, Gauging, Control, and Compensation.

Axial Leaded Glass Encapsulated NTC Thermistor Description

AMF58 series NTC thermistor in glass encapsulated package,diode outline, with axial tinned Dumet ( Copper-Clad Ni-Fe) wire. Widely applied in temperature measurement, detection, indicator, monitoring, gauging, control, calibration and compensation, etc.

Axial Leaded Glass Encapsulated NTC Thermistor dimension (Unit: mm)

Axial Glass Encapsulated NTC thermistor Features

Operation up to 300C with excellent stability.
Glass body provides hermetic seal & voltage insulation, can operate in high temperature and moisture environment.
Small dimension, solid, convenient for automatic installation.
Fast heat induction, high sensitivity.
Nominal resistance @25C can be from 2kΩ— 1.388 million ohm.
Typical resistance at 25C 5k ohm, 10k ohm, 20k ohm, 47k ohm, 50k ohm, 100k ohm, 200k ohm, 500k ohm, 1.388 million ohm etc.
Tight tolerance on resistance and beta value.

 

Axial Glass Encapsulated NTC thermistor Application Examples:

In household electronics temperature measurement, detection and control: such as air-conditioners, micro-wave ovens, electric fans, and electric heaters, electric cookers, induction cooker, hair driers, etc.
Temperature detection and compensation of automatic office equipment, such as copiers and printers.
In heating and air conditioning (HVAC): in heating cost distributors, for room temperature monitoring, in under-flooring heating and gas boilers, for determining exhaust gas or burner temperature, outdoor temperature sensor.
Industrial electronics: for temperature stabilization of laser diodes and photo-elements, for temperature compensation in copper coils or reference point compensation of thermo-elements, etc. Also for temperature measurement and compensation of meters, instruments, integrated circuits, quartz crystal oscillators and thermocouples.
In telecommunication: for temperature measurement, compensation and control and protection of mobile phones, battery pack and battery charger, etc.
Glass encapsulated package NTC thermistor can also be used in temperature measurement, monitoring, detection and control of medical equipment, food processing equipment, climate, etc.

 

AMWEI Axial Glass Encapsulated NTC thermistor Data Sheet

Part number	Resistance @ 25C R25		Beta value (K)	Dissipation coefficient (mW/℃)	Thermal time constant (S)	Operating temperature (Centigrade)	Rated Power (mW)
	Resistance （K ohm）	Tolerance （%）
AMF58-502□3470	5K ohm	±1% (F) ±2% (G) ±3% (H) ±5% (J)	3470K	≥2.0 mW/C in still air	≤10s in still air	-45~+250C	≤50 (mW)
AMF58-103□3380	10K ohm		3380K
AMF58-103□3950	10K ohm		3950K
AMF58-203□3950	20K ohm		3950K
AMF58-303□3950	30K ohm		3950K
AMF58-473□3950	47k ohm		3950K
AMF58-503□3950	50K ohm		3950K
AMF58-98.63k□4016	98.63KΩ		4016K			-30~+300C
AMF58-104□3950	100K ohm		3950K
AMF58-104□3990	100K ohm		3990K
AMF58-104□4016	100K ohm		4016K
AMF58-204□3899	200K ohm		3899K
AMF58-204□4200	200K ohm		4200K
AMF58-504□4250	500K ohm		4250K
AMF58-1.388M□4500	1388K ohm		4500K
AMF58-3.78M□4700	3780K ohm		4700K

Notes：□ in the part number for filling in resistance tolerance.
Beta value is calculated at temperature 25C and 50C, B(25/50).
Alternative rating can be made upon customer specific requirements.

 

Axial Leaded Glass Encapsulated NTC thermistor Reliability Data

Test	Standard	Test Conditions	ΔR25/R25 (typical)	Remarks
Low temeprature storage	IEC 60068-2-1	Storage at low category temperature: -30 oC, Time: 1000hours	≤2%	No visible damage
Storage in dry heat	IEC 60068-2-2	Storage at upper category temperature: 200 oC, Time: 1000hours	≤2%	No visible damage
Storage in damp heat, steady state (Humidity test)	IEC 60068-2-3	Temperature: 40oC, Humidity:90%-95% RH, Duration:1000 hours	≤2%	No visible damage
Temperature cycling	IEC 60068-2-14	1. -30C/30 minutes 2. 80C/5minutes 3. 200C/30 minutes 4. 80C/5minutes. Number of cycles: 5 Cycles	≤2%	No visible damage

Axial Leaded Glass Encapsulated NTC thermistor Mechanical Test

Test	Standard	Test Conditions and methods	Requirements
Soldering & Solderability	IEC60068-2-20 Test Ta	Temperature: 230±5 ℃， 2-2.5mm away from ceramic body，On: 2±0.5 Seconds.	The terminations shall be evenly tinned
Resistant to soldering heat	IEC60068-2-20 Test Tb	Temperature: 260±5℃, 2-2.5mm away from ceramic body，On：10±1 Seconds.	No visible damage, ΔR25/R25≤2%
Lead wire tensile	IEC60068-2-21 Test U	Test Ua: Force 10N, On 10S; Test Ub: Bending 90C, Force 5N, Twice.	No break off, ΔR25/R25≤2%

Axial Leaded Glass Encapsulated NTC thermistor Application Precaution

·Minimum lead wire length tailored to shall be ≥8mm.
·In lead wire bending, bending point shall be more than 2mm away from glass body part.

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