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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 DO35 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 Leaded Glass Encapsulated NTC Thermistor dimension engineering drawing

Axial Glass Encapsulated NTC thermistor Features
Glass body DO35 package 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.
Operating temperature -45C to +250C.
Nominal resistance @25C can be from 2k 1.388 million ohm.
Typical resistance at 25C 2k ohm, 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.
Dissipation factor: 2.0 mW/C in still air.
Thermal time constant: 12 seconds in still air.

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 (K ohm)
Beta value
Specfic Temperature
Point Resistance
Data (ohm)
AMF58-2023839(B5/25) R25:2K ohm B(5/25C):3839K R5: 5.06K ohm
AMF58-5023470 R25:5K ohm B(25/50C):3470K
AMF58-5023950 R25:5K ohm B(25/50C):3950K
AMF58-1033380 R25:10K ohm B(25/50C):3380K
AMF58-1033435(B25/85) R25:10K ohm B(25/85C):3435K
AMF58-1033470 R25:10K ohm B(25/50C):3470K
AMF58-1033600 R25:10K ohm B(25/50C):3600K
AMF58-1033700 R25:10K ohm B(25/50C):3700K
AMF58-1033950 R25:10K ohm B(25/50C):3950K
AMF58-1033975(B25/85) R25:10K ohm B(25/85C):3975K
AMF58-1034100 R25:10K ohm B(25/50C):4100K
AMF58-2033950 R25:20K ohm B(25/50C):3950K
AMF58-2334200 R25:23K ohm B(25/50C):4200K
AMF58-3033950 R25:30K ohm B(25/50C):3950K
AMF58-40.27K3979(B25/85) R25:40.27K ohm B(25/85C):3979K
AMF58-4733950 R25:47k ohm B(25/50C):3950K
AMF58-5033950 R25:50K ohm B(25/50C):3950K
AMF58-5034050 R25:50K ohm B(25/50C):4050K
AMF58-98.75K4300(B100/200) R25:98.75K B(100/200C):4300K R200: 0.55K ohm
AMF58-1043899 R25:100K ohm B(25/50C):3899K
AMF58-1043930 R25:100K ohm B(25/50C):3930K
AMF58-1043950 R25:100K ohm B(25/50C):3950K
AMF58-1043990 R25:100K ohm B(25/50C):3990K
AMF58-1044200 R25:100K ohm B(25/50C):4200K
AMF58-2043899 R25:200K ohm B(25/50C):3899K R160:3.0K ohm
AMF58-2044200 R25:200K ohm B(25/50C):4200K
AMF58-2044260 R25:200K ohm B(25/50C):4260K
AMF58-5044050 R25:500K ohm B(25/50C):4050K
AMF58-5044260 R25:500K ohm B(25/50C):4260K
AMF58-1.388M4500 R25:1388K ohm B(25/50C):4500K R200:4.0K ohm
Notes in the part number for filling in resistance tolerance, optional for 1%(F), 2%(G), 3%(H), or 5%(J).

Axial Leaded Glass Encapsulated NTC thermistor Reliability Data
Test Conditions
R25/R25 (typical)
Low temperature storage IEC 60068-2-1 Storage at low category temperature: -30 oC, Time: 1000hours
No visible damage
Storage in dry heat IEC 60068-2-2 Storage at upper category temperature: 200 oC, Time: 1000hours
No visible damage
Storage in damp heat, steady state (Humidity test) IEC 60068-2-3 Temperature: 40oC,
Humidity:90%-95% RH,
Duration:1000 hours
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
No visible damage
Axial Leaded Glass Encapsulated NTC thermistor Mechanical Test
Test Conditions and methods
Soldering & Solderability IEC60068-2-20
Test Ta
Temperature: 2305 棬
2-2.5mm away from ceramic bodyOn: 20.5 Seconds.
The terminations shall be evenly tinned
Resistant to soldering heat IEC60068-2-20
Test Tb
Temperature: 2605,
2-2.5mm away from ceramic bodyOn101 Seconds.
No visible damage,
Lead wire tensile IEC60068-2-21
Test U
Test Ua: Force 10N, On 10S;
Test Ub: Bending 90C, Force 5N, Twice.
No break off,
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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