LETTER SYMBOLS FOR DIODES—
SymbolParameter (English)
URRMRepetitive peak reverse voltage
URSMNon‑repetitive peak reverse voltage
IFAVMean forward current
IFRMSRMS forward current
IFSMSurge forward current
i2tLimiting load integral
TstgStorage temperature
TvjJunction temperature
TcCase temperature
MTightening torque
FMounting force
UFMPeak forward voltage
UT(TO)Threshold voltage
rTSlope resistance
IRRMRepetitive peak reverse current
trrReverse recovery time
QrrRecovered charge
RthjcThermal resistance, junction – case
UBRBreakdown voltage
PRSMSurge reverse power dissipation

Group codes for fast‑recovery diodes (based on trr)

Group symbolCode No.trr, µs
00Not limited
A4–10
B4–8
C4–6.3
E415
H424
K433.2
M442.5
P452
T461.6
X4–1.25
A571
B5–0.8
C580.63
E5–0.5
H590.4
0
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Wintech Automation LTD
Our Capabilities
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Power Semiconductor
About
Contact
Schedule a call
Our Capabilities
Our Services
Power Semiconductor
About
Contact
Schedule a call

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