Symbols and terms

Symbol

Term

C

Capacitance

Ctyp

Typical capacitance

i

Current

ic

Current at which Vc, max is measured

Ileak

Leakage current

imax

Maximum surge current (also termed peak current)

Imax

Maximum discharge current to IEC 61643-1

Inom

Nominal discharge current to IEC 61643-1

LCT

Lower category temperature

Ltyp

Typical inductance

Pmax

Maximum average power dissipation

Rins

Insulation resistance

Rmin

Minimum resistance

TA

Ambient temperature

tr

Duration of equivalent rectangular wave

UCT

Upper category temperature

v

Voltage

Vclamp

Clamping voltage

vc, max

Maximum clamping voltage at specified current ic

VDC

DC operating voltage

Vjump

Maximum jump start voltage

vmax

Maximum voltage

Vop

Operating voltage

VRMS

AC operating voltage, root-mean-square value

VRMS, op, max

Root-mean-square value of max. DC operating voltage incl. ripple current

Vsurge

Super imposed surge voltage

VV

Varistor voltage

∆V

V

Tolerance of varistor voltage

WLD

Maximum load dump

Wmax

Maximum energy absorption

Lead spacing

All dimensions are given in mm.

The commas used in numerical values denote decimal points.

Block varistors

B722*

HighE series

Page 21 of 22

Please read Cautions and warnings and

Important notes at the end of this document.