Radial Leaded Glass Sealed Bead NTC Thermistor 3300Ω@100C, Beta B(0/100) 3970K, Temperature Measurement -40C to +300C

AMWEI Product Number: AMF58B-332@100C3970B(0/100)

Radial Glass Bead NTC Shape and Dimension

Radial Glass Bead NTC Thermistor

Radial Glass Bead NTC Thermistor

  • Glass body diameter D: 1.3±0.2 mm
  • Glass body Length L1: 3.0 mm Max
  • Dumet Lead Wire (copper-clad FeNi) length L2: 65±5 mm
  • Dumet Lead Wire  Diameter Φd: 0.2 ±0.05 mm:
D L1 L2 Φd±0.05
1.3±0.2 mm 3.0 mm Max 65±5 mm 0.2 mm

Radial Glass Bead NTC Thermistor Application

For high temperature measurement upto 300C. Typical application in industrial process control, motors, heating and air conditioning (HVAC) , medical industry, 3D printing, food processing, etc.

Radial Glass Bead NTC Thermistor Electric Characteristics Data

  • Resistance at 100C R100: 3300 ohm+/2.5%
  • Beta Value B(0/100): 3970K+/-2%
  • Dissipation Factor: 0.5 mw/℃ min.
  • Thermal Time Constant (in still air): 6.5 seconds max.
  • Insulation resistance: room temperature, 50VDC, 60 Seconds, 10 MΩ min.
  • Operating temperature range: -40 to +300C.

Resistance vs. Temperature RT Data

(K Ohm)
(K Ohm)
(K Ohm)
-40C 1629.006KΩ 80C 6.231 KΩ 200C 0.276 KΩ
-35C 1183.375 KΩ 85C 5.303KΩ 205C 0.249 KΩ
-30C 871.033 KΩ 90C 4.508 KΩ 210C 0.226 KΩ
-25C 649.103 KΩ 95C 3.849 KΩ 215C 0.205 KΩ
-20C 483.115 KΩ 100C 3.300 KΩ 220C 0.187 KΩ
-15C 363.713 KΩ 105C 2.834 KΩ 225C 0.170 KΩ
-10C 276.794 KΩ 110C 2.444 KΩ 230C 0.155 KΩ
-5C 212.804 KΩ 115C 2.115 KΩ 235C 0.142 KΩ
0C 165.191 KΩ 120C 1.838 KΩ 240C 0.130 KΩ
5C 128.196 KΩ 125C 1.602 KΩ 245C 0.120 KΩ
10C 100.382 KΩ 130C 1.397 KΩ 250C 0.110 KΩ
15C 79.273 KΩ 135C 1.223 KΩ 255C 0.101 KΩ
20C 63.109 KΩ 140C 1.073 KΩ 260C 0.093 KΩ
25C 50.627 145C 0.945 KΩ 265C 0.085 KΩ
30C 40.712 KΩ 150C 0.835 KΩ 270C 0.079 KΩ
35C 32.970 KΩ 155C 0.738 KΩ 275C 0.073 KΩ
40C 26.882 KΩ 160C 0.655 KΩ 280C 0.067 KΩ
45C 22.059 KΩ 165C 0.583 KΩ 285C 0.062 KΩ
50C 18.212 KΩ 170C 0.520 KΩ 290C 0.058 KΩ
55C 15.025 KΩ 175C 0.465 KΩ 295C 0.054 KΩ
60C 12.467 KΩ 180C 0.417 KΩ 300C 0.050 KΩ
65C 10.402 KΩ 185C 0.375 KΩ
70C 8.725 KΩ 190C 0.338 KΩ
75C 7.356 KΩ 195C 0.305 KΩ

Radial Glass Bead 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,
Lead wire tensile IEC60068-2-21
Test U
Test Ua: Force 10N, On 10 Seconds;
Test Ub: Bending 90C, Force 5N, Twice.
No break off,

Radial Glass Bead NTC Thermistor Reliability Data

Test Standard Test Conditions ΔR25/R25 (typical) Remarks
Low temperature storage IEC 60068-2-1 Storage at low category temperature: -40C, Time: 1000 hours ≤3% No visible damage
Storage in dry heat IEC 60068-2-2 Storage at upper category temperature: 250C, Time: 1000 hours ≤3% No visible damage
Storage in damp heat, steady state (Humidity test) IEC 60068-2-3 Temperature: 40C,
Humidity:90%-95% RH,
Duration: 1000 hours
≤3% No visible damage
Temperature cycling IEC 60068-2-14 1. -30C/30 minutes
2. 80C/5minutes
3. 250C/30 minutes
4. 80C/5minutes.
Number of cycles: 5 Cycles
≤3% No visible damage

Contact of NTC thermistors with any liquids and solvents shall be prevented. It must be ensured that no water enters the NTC thermistors (e.g. through plug terminals).
Avoid dewing and condensation unless thermistor is specified for these conditions.


Standard package is loose bulk plastic bag package.

Note: Other Resistance Part and More information can be founded in AMWEI Radial Leaded Glass Encapsulated NTC Thermistor Temperature Sensor Temperature Sensor Page.