B57211 datasheet(1/3 Pages) EPCOS

Part #	B57211

Description	SMD NTC Thermistors with Nickel Barrier Termination

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Manufacturer	EPCOS [EPCOS]

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48

05/02

SMD NTC thermistors with nickel barrier termination

Temperature Measurement

Applications

I Temperature measurement and compensation in

– mobile phone applications (e.g. battery pack, TCXO, LCD)

– data systems

– automotive electronics

Features

I Multilayer SMD NTC with inner electrodes

I Ni barrier termination (Ag/Ni/Sn)

I High accuracy:

± 5 % in resistance,

B value tolerance down to

± 1,5 % available on request

I Excellent long-term ageing stability in high-temperature

and high-humidity environment

I Superior resistance stability during soldering (change < 1 %)

Options

Alternative resistance ratings, resistance tol.

< 5 % and B value tol. < 3 % available on request

Delivery mode

Cardboard tape, 180-mm reel, PU: 10000 pcs

Climatic category (IEC 60068-1)

Max. power at 25

°C (on PCB)

P251)

Resistance tolerance

∆R

N/RN

Rated temperature

TN

B value tolerance

∆B/B

Dissipation factor (on PCB)

δ

th

1)

Thermal cooling time constant (on PCB)

τc1)

Heat capacity

Cth1)

55/125/56

150

± 5 %, ± 10 %

25

± 3 %

approx. 2,5

approx. 3,0

approx. 7,5

mW

°C

mW/K

s

mJ/K

R25

Ω

No. of R/T

characteristic

B25/50

K

B25/85

K

B25/100

K

Ordering code

100

8501

3470

3540

3550

B57211V2101+060

150

8501

3470

3540

3550

B57211V2151+060

220

8501

3470

3540

3550

B57211V2221+060

330

8501

3470

3540

3550

B57211V2331+060

470

8501

3470

3540

3550

B57211V2471+060

1,0 k

8502

3940

3980

4000

B57221V2102+060

1,5 k

8502

3940

3980

4000

B57221V2152+060

2,2 k

8502

3940

3980

4000

B57221V2222+060

3,3 k

8502

3940

3980

4000

B57221V2332+060

4,7 k

8502

3940

3980

4000

B57221V2472+060

10 k

8502

3940

3980

4000

B57221V2103+060

Dimensions in mm

Approx. weight 4,5 mg

Termination

0,5±0,05

TNT0395-Q

0,6 max.

1) Depends on mounting situation

B572**

V2**

SMD NTC Thermistors with Nickel Barrier Termination, Size 0402

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B57211 Datasheet(PDF) 1 Page - EPCOS

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