B59535T1120A262 Ver la hoja de datos (PDF) - EPCOS AG

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B59535T1120A262

PTC thermistors for overcurrent protection in telecom applications

EPCOS AG 

Overcurrent protection for telecom

Telecom pair protector (TPP), SMD

Symbols and terms

A

Cth

f

I

Imax

IR

IPTC

Ir

Ir,oil

Ir,air

IRMS

IS

ISmax

LCT

N

Nc

Nf

P

P25

Pel

Pdiss

Rmin

RR

∆RR

RP

RPTC

Rref

RS

R25

R25,match

∆R25

T

t

TA

ta

TC

Area

Heat capacity

Frequency

Current

Maximum current

Rated current

PTC current

Residual currrent

Residual currrent in oil (for level sensors)

Residual currrent in air (for level sensors)

Root-mean-square value of current

Switching current

Maximum switching current

Lower category temperature

Number (integer)

Operating cycles at Vmax, charging of capacitor

Switching cycles at Vmax, failure mode

Power

Maximum power at 25 °C

Electrical power

Dissipation power

Minimum resistance

Rated resistance

Tolerance of RR

Parallel resistance

PTC resistance

Reference resistance

Series resistance

Resistance at 25 °C

Resistance matching per reel/ packing unit at 25 °C

Tolerance of R25

Temperature

Time

Ambient temperature

Thermal threshold time

Ferroelectric Curie temperature

Please read Cautions and warnings and

Important notes at the end of this document.

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