MF52 Black Epoxy Resin Encapsulation Thermal Resistor NTC Thermistor 3KOhm 3950 For Miniature Temperature Sensor

A

B

C

D

L

Max 30

Max 4.5

Max 2.5

0.33±0.05

33±3

NO

Item

Sign

Test Conditions

Min.

Normal value

Max.

Unit

4-1.

Resistance at 25℃

R25

Ta=25±0.05℃

PT≦0.1mw

2.97

3.0

3.03

kΩ

4-2.

B Value

B25/50

3910.5

3950

3989.5

k

4-3.

Dissipation factor

σ

In still air

≥0.9

mw/℃

4-4.

Time constant

τ

In still air

≦8

sec

4-5.

Operating temp.range

/

/

-40

/

+125

℃

4-6

Insulation resistance

/

100V DC 1min

≥100

MΩ

4-7.

Maximum rated power

Pmax

/

≤25

mW

NO

Item

Technical requirements

Test conditions and method

5-1.

Weldability

R25 △R/R≤±2%

Temperature: 260℃±5℃, Time:2-3Sec

5-2.

Resistance To Soldering Heat

R25 △R/R≤±2%

Tin stove temperature: ≤260±5℃, Immersion depth is ≤6mm distance far away with body, Time:5±1Sec

5-3

Steady State Temperatur

R25 △R/R≤±2%

Temperature:40±2℃; Humidity:93±2%, Time:300H

5-4

Temp. cycle test

R25 △R/R≤±2%

–20±3℃×30min      120±3℃×30min× 50 cycles

5-5.

High temperature storage

R25 △R/R≤±2%

Temperature:120±5℃; Time:300H

5-6

Low temperature storage

R25 △R/R≤±2%

Temperature:-20℃; Time:300H

5-7

Drop test

No visible damage

Free fall into concrete floor from height 1M ,5 cycle.

5-8

Bending test

Bend 90°binding site wire and epoxy resin.Back and forth 3 times

5-9

Tensile tests

Fixed resistors at both ends ,Pull: 10±1N, Time: 5±1 Sec