Radial Leaded Glass Encapsulated Bead NTC Thermistor 50K Ohm Beta B(25/50) 3950K, Temperature Measurement -40C to +300C

Name: NTC 50K Ohm Beta 3950K 300C Radial Glass Bead - AMWEI Thermistor Sensor
Brand: AMWEI
Availability: InStock

AMWEI Part No. AMF58B-503F3950

Radial Glass Bead NTC Shape and Dimension

Radial Glass Bead NTC Thermistor

Glass body diameter D: 1.3±0.2 mm
Glass body Length L1: 2.8 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	2.8 mm Max	65±5 mm	0.2 mm

Radial Glass Bead NTC 50K Ohm 3950K 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 25C R25: 50K ohm+/-1%
Beta Value B(25/50): 3950K+/-1%
Optional R25 resistance tolerance, ±1%(F), ±2%(G), ±3%(H), or ±5%(J)
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.

NTC 50K Ohm 3950K Resistance vs. Temperature RT Data

Temperature Centigrade	Resistance (K Ohm)	Temperature Centigrade	Resistance (K Ohm)	Temperature Centigrade	Resistance (K Ohm)
-40C	1554.810KΩ	80C	6.213 KΩ	200C	0.298 KΩ
-35C	1127.023 KΩ	85C	5.274KΩ	205C	0.272 KΩ
-30C	833.379 KΩ	90C	4.493 KΩ	210C	0.248 KΩ
-25C	623.157 KΩ	95C	3.841 KΩ	215C	0.227 KΩ
-20C	469.250 KΩ	100C	3.296 KΩ	220C	0.208 KΩ
-15C	355.359 KΩ	105C	2.838 KΩ	225C	0.191 KΩ
-10C	270.668 KΩ	110C	2.453 KΩ	230C	0.176 KΩ
-5C	207.518 KΩ	115C	2.128 KΩ	235C	0.162 KΩ
0C	160.297 KΩ	120C	1.853 KΩ	240C	0.150 KΩ
5C	124.848 KΩ	125C	1.620 KΩ	245C	0.139 KΩ
10C	98.085 KΩ	130C	1.422 KΩ	250C	0.129 KΩ
15C	77.731 KΩ	135C	1.253 KΩ	255C	0.119 KΩ
20C	62.111 KΩ	140C	1.108 KΩ	260C	0.111 KΩ
25C	50.000 KΩ	145C	0.984 KΩ	265C	0.103 KΩ
30C	40.501 KΩ	150C	0.878 KΩ	270C	0.096 KΩ
35C	32.962 KΩ	155C	0.778 KΩ	275C	0.089 KΩ
40C	26.905 KΩ	160C	0.692 KΩ	280C	0.083 KΩ
45C	21.983 KΩ	165C	0.617 KΩ	285C	0.078 KΩ
50C	17.941 KΩ	170C	0.552 KΩ	290C	0.073 KΩ
55C	14.883 KΩ	175C	0.495 KΩ	295C	0.068 KΩ
60C	12.401 KΩ	180C	0.445 KΩ	300C	0.064 KΩ
65C	10.375 KΩ	185C	0.401 KΩ
70C	8.713 KΩ	190C	0.363 KΩ
75C	7.344 KΩ	195C	0.329 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, ΔR25/R25≤2%
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, ΔR25/R25≤2%

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

Note
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.