Fabricantes de sensores chinos

China Temperature Sensor & Thermistor manufacturer

Glass Sealed Thermistor

Product Item: Glass Sealed Thermistor
Category: Sensor
The glass-sealed thermistor is a thermistor sealed with heat-insulating glass. Because the glass is insulated, the thermistor is not affected by additional temperature, which greatly improves the sensitivity and accuracy of the control. The glass sealed thermistor looks like this:
Thermistors are a class of sensitive components. According to the different temperature coefficient, it is divided into positive temperature coefficient thermistor and negative temperature coefficient thermistor. The typical characteristic of a thermistor is that it is sensitive to temperature and exhibits different resistance values at different temperatures. Positive temperature coefficient thermistors have higher resistance values at higher temperatures, and negative temperature coefficient thermistors have lower resistance values at higher temperatures. They both belong to semiconductor devices.

  • PRODUCT DETAIL
The glass-sealed thermistor is a thermistor sealed with heat-insulating glass. Because the glass is insulated, the thermistor is not affected by additional temperature, which greatly improves the sensitivity and accuracy of the control. The glass sealed thermistor looks like this:
Thermistors are a class of sensitive components. According to the different temperature coefficient, it is divided into positive temperature coefficient thermistor and negative temperature coefficient thermistor. The typical characteristic of a thermistor is that it is sensitive to temperature and exhibits different resistance values at different temperatures. Positive temperature coefficient thermistors have higher resistance values at higher temperatures, and negative temperature coefficient thermistors have lower resistance values at higher temperatures. They both belong to semiconductor devices.

What Is Glass Sealing Thermistor
Glass thermistor is a glass-sealed thermistor. Common glass sealing thermistor are: single-ended glass thermistor, diode glass seal, SMD glass seal. Because of the glass insulation, the thermistor is not affected by the additional temperature, greatly improving the sensitivity and accuracy of the control.

Glass Sealed Thermistor Characteristics
High interchange accuracy
Excellent solderability and thermal shock resistance
Wide operating temperature range
Excellent moisture resistance
Low loss, small size
Automated mass production to ensure that the products of high quality and high stability

Composition Structure And Production Process
1> single-ended glass seal: thermistor chip and copper wire welding, use a bead-like glass case package. Single-ended glass-type products are the smallest thermistor.
● lead package allows for manual or machine is mounted;Single - ended glass thermistor structure diagram
● Packing: 1000 pcs / bag;
● Dissipation factor: ≥2mW / ℃ (in still air)
● Thermal time constant: ≤ 20S (in still air)
● Rated power: ≤ 50mW
● Note: When installing the product, two wire can not touch.
Probe size selection table:
model D L1max L2 d±0.05
MF51-2.80 2.80±0.20 4.40 30±5 50±5 0.28
MF51-1.80 1.80±0.20 3.80 30±5 50±5 0.23
MF51-1.50 1.5±0.20 2.00 30±5 50±5 0.21
MF51-1.25 1.25±0.20 1.80 30±5 50±5 0.21
MF51-1.20 1.20±0.20 1.80 30±5 50±5 0.21
MF51-0.70 0.70±0.20 1.20 30±5 50±5 0.15
Another :Dmax=0.90mm,Dmax=1.75mm,Dmax=1.95mm product

Model name (MF51-103-F-3470-F-A-1.2):
MF51: single-ended glass thermistor series
103: resistance 104 = 100K, 103 = 10K, 503K = 50K, 502 = 5K,
F: resistance accuracy, F = 1%, G = 2%, H = 3%, J = 5%
3470: B value 3470 = 3470K, common have 3950,3435,4200,3380,4300
F: B value accuracy, F = 1%, G = 2%, H = 3%, J = 5%
A: A = B25 / 50, B = B25 / 85, X = Specifies the two-point temperature B value
1.2: refers to the glass probe diameter,

Common Single-ended Glass Seal Models
model Nominal resistance value B value D Operating temperature
R25 (KΩ) Accuracy (25/50℃) Specific B value Accuracy mm (℃)
(K)
MF51-104□3950FA-0.9 100 F:±1%
G:±2%
H:±3%
J:±5%
3950   F:±1%
G: ±2%
H: ±3%
J: ±5%
0.9 -55~300
MF51-103□3380FA-□.□□ 10 3380   □.□□
MF51-103□3435FB-□.□□ 10   B25/85=3435 □.□□
MF51-103□3950FA-□.□□ 10 3950   □.□□
MF51-103□3470FA-□.□□ 10 3470   □.□□
MF51-503□3950FA-□.□□ 50 3950   □.□□
MF51-104□3950FA-□.□□ 100 3950   □.□□
MF51-104□4200FA-□.□□ 100 4200   □.□□
MF51-105H4608GA-□.□□ 1000 4608   □.□□
MF51-503.485K□3400FA-□.□□ 503.485 3400   □.□□
MF51-502□3950FA-□.□□ 5 3940   □.□□
MF51-103□3380FA-□.□□ 10 3380   □.□□
MF51-103□3435FB-□.□□ 10   B25/85=3435 □.□□
MF51-103□3950FA-□.□□ 10 3950   □.□□
MF51-503□3950FA-□.□□ 50 3950   □.□□
MF51-503□4050FA-□.□□ 50 4050   □.□□
MF51-96.5K□3950FA-□.□□ 96.5 3950   □.□□
MF51-96.5K□4200FA-□.□□ 96.5 4200   □.□□
MF51-104□3950FA-□.□□ 100 3950   □.□□
MF51-104□4200FA-□.□□ 100 4200   □.□□
MF51-104□4320FA-□.□□ 100 4320   □.□□
MF51-103.9K□3951FA-□.□□ 103.9 3951   □.□□
MF51-103.9K□4200FA-□.□□ 103.9 4200   □.□□
MF51-204□3899FA-□.□□ 200 3899   □.□□
MF51-224□4130FA-□.□□ 220 4130   □.□□
MF51-234□4537FX-□.□□ 230   B100/200=4537 □.□□
MF51-105□4608FB-□.□□ 1000   B25/85=4608 □.□□
MF51-1.388M□4600FA-□.□□ 1388 4600   □.□□
 
2> axial thermal resistance of glass sealed diode ordinary diode appearance and the same size, is the most widely used resistance temperature detector, product structure is simple, low prices.
Axial Leaded Glass ThermistorsDiode thermistor structure and dimensions
● lead glass seal facilitates installation by hand or machine;
● Packing: 500 pcs / bag or braid;
● Dissipation factor: ≥2mW / ℃ (in still air)
● Thermal time constant: ≤ 20S (in still air)
● Rated power: ≤ 50mW
Composition structure: two symmetric wires (tin-lead), a diode glass envelope, the intermediate seal chip thermistor.
Product model number table:
model
Nominal resistance value
B value Operating temperature
R25 (KΩ) Accuracy (25/50℃)(K) Specific B value Accuracy (℃)
MF58□102□2700 1.00 ±1%
±2%
±3%
±5%
 
 
 
2700   ±1%
±2%
-40~350
MF58□102□3270 1.00 3270  
MF58□152□3920 1.50 3920  
MF58□202□3470 2.00 3470  
MF58□202□3839X 2.00   B5/25=3839
MF58□2.89□3470 2.89 3470  
MF58□2.89□3520 2.89 3520  
MF58□302□3520 3 3520  
MF58□472□3230 4.7 3230  
MF58□472□3510 4.7 3510  
MF58□502□3240 5 3240  
MF58□502□3270 5 3270  
MF58□502□3380 5 3380  
MF58□502□3470 5 3470  
MF58□502□3500 5 3500  
MF58□502□3900 5 3900  
MF58□502□3950 5 3950  
MF58□5.369□3480 5.369 3480  
MF58□103□3360 10 3360  
MF58□103□3380 10 3380  
MF58□103□3435 10 3435  
MF58□103□3470 10 3470  
MF58□103□3600 10 3600  
MF58□103□3700 10 3700  

SMD glass thermistor structure

SMD glass sealed thermistor: Temperature measurement convenient panel mounted thermistor, thermistor chip completely isolated from the outside world, electrical performance is extremely stable and reliable.
● easy to patch installation. There are two specifications, for selection;
●Model: B1 (L = 3.6mm, D = 1.5mm) B2 (L = 1.8mm D = 1.1mm)
● Packing: 4000 pcs / bag or braid;
● Dissipation factor: B1 ≥ 2mW / ℃ B2 ≥ 1mW / ℃ (in still air)
● Thermal time constant: B1 ≤ 10S B2 ≤ 5S (in still air)
● Rated power: B1 ≤ 10mW B2 ≤ 5mW
Composition structure: two ends are tin-plated steel electrode fixed, tubular glass shell sealed copper clad nickel wire, the middle is the thermistor chip. The entire production line using automatic machinery production, a good product to a good.

model Nominal resistance value B value Operating temperature Operating temperature Dissipation factor Hot time constant
R25 (KΩ) Accuracy (K) Specific B value Accuracy (℃)
MF58□202□3839□X(5/25) 2 ±1%
±2%
±3%
±5%
  B5/25= 3839 ±0.5%
±1%
±2%
R5=5.06KΩ -40~350    
MF58□202□3771□X(-18/25) 2   B-18/25= 3771 R-18=16.9KΩ
MF58□5.369K□3480□B 5.369   B25/85= 3480  
MF58□103□3975□B 10 3975    
MF58□233□4200□A 23 4200    
MF58□40.27K□3979□B 40.27   B25/85= 3979  
MF58□49.12K□3970□X(0/100) 49.12   B0/100= 3970 R100=3.3KΩ
MF58□503□4050□A 50 4050    
MF58□98.75K□4300□X(100/200) 98.75   B100/200= 4300 R200=0.55KΩ
MF58□98.63K□4300□X(100/200) 98.63   B100/200= 4300 R200=0.55KΩ
MF58□104□3899□A 200 3899   R160=1.50KΩ
MF58□104□3930□A 100 3930    
MF58□104□3990□A 100 3990    
MF58□175T2.109K□3899□A   3899   R175=2.109KΩ
MF58□204□3899□A 200 3899   R160=3.0KΩ
MF58□231.5K□4537□X(100/200) 231.5 4537   R200=1.0KΩ
MF58□1.388M□4500□A 1388 4500   R200=4.0KΩ

 Application
1, copier, printer office appliances
2, curlers, grill cover, hair dryer and other beauty equipment
3, inverter fan, iron, water heater, oven, hood and other household appliances temperature sensor
4, the car brake system, micro-motors, flow meters and other small space and high temperature requirements, or short response time of the occasion,
5, fire warning system
6, can replace the PSB-S1, PSB-S3 (PT-51F, PT-25E2, PT-312, PM-342, PM-382, PB-43, PB-41E) series
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