Eng

LETTER SYMBOLS FOR THYRISTORS

UDRM
URRM

Repetitive peak off-state and reverse voltage

ITAV

Mean on-state current

ITRMS

RMS on-state current

ITSM

Surge on-state current

Tj

Junction temperature

Tstg

Storage temperature

Tc

Case temperature

M

Tightening torque

F

Mountain force

UTM

Peak on-stage voltage

UT (TO)

Threshold voltage

rT

Onstate slope resistance

IDRM
IRRM

Repetitive peak reverse and off-state current

IL

Latching current

IH

Holding Current

UGT

Gate trigger direct voltage

IGT

Gate trigger direct current

UGD

Gate non-trigger direct voltage

URGM

Peak reverse gate voltage

(duD/dt)crit

Critical rate of rise of off-state voltage

(diT/dt)crit

Critical rate of rise of off-state current

tgd

Delay time

tgt

Turn-on time

tq

Turn-off time

PRSM

Surge reverse power dissipation

Rthjc

Thermal resistance junction to case

LETTER SYMBOLS FOR DIODES

URRM

Repetitive peak reverse voltage

IFAV

Mean forward current

IFRMS

RMS forward current

IFSM

Surge forward current

Tstg

Storage temperature

Tj

Junction temperature

Tc

Case temperature

M

Tightening torque

F

Mountain force

UFM

Peak forward voltage

U(TO)

Threshold voltage

rT

Slope resistance

IRRM

Repetitive peak reverse current

trr

Reverse recovery time

Qrr

Reverse recovery charge

PRSM

Surge reverse power dissipation

Rthjc

Thermal resistance junction to case

UBR

Breakdown voltage

Krr

Coefficient of reverse recovery current

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