I
T(AV) 
25A, I
T(RMS) 
39A, I
TSM
500A 
di/dt 100 A/ s 
dv/dt 500V/ s
Applications
Various rectifiers 
AC/DC motor drives 
Heater controls 
Light dimmers 
Static switches
Internal Configurations
15
PK
(
PD,PE,KK
)
25GB
THYRISTOR MODULE
UL;E76102 M
Maximum Ratings
Symbol Item
PK25GB40 PD25GB40 
KK25GB40 PE25GB40
Ratings
PK25GB80 PD25GB80 
KK25GB80 PE25GB80
Unit
VRRM
Repetitive Peak Reverse Voltage
400 800 V
480 960 V
400 800 V
VRSM
VDRM
Non-Repetitive Peak Reverse Voltage
Repetitive Peak Off-State Voltage
Symbol Item Conditions Ratings
25
Unit
I
T AV
Average On-State Current
I
T RMS
R.M.S. On-State Current
Single phase, half wave, 180 conduction, Tc 97
Single phase, half wave, 180 conduction, Tc 97
I
TSM
Surge On-State Current
I2t
I2t
P
GM
Peak Gate Power Dissipation
P
G AV
Average Gate Power Dissipation
I
FGM
Peak Gate Current
V
FGM
Peak Gate Voltage (Forward)
1
2
cycle, 50Hz/60Hz, peak Value, non-repetitive
Value for one cycle of surge current
A
39 A
450/500
A
1000
10
A2S
W
1
V
RGM
Peak Gate Voltage (Rsverse)
di dt
Critical Rate of Rise of On-State Current
IG100mA Tj 25 V
D
1
2
V
DRMdIG
/
dt 0.1A/s
V
ISO
Isolation Breakdown Voltage (R.M.S.)
Tj
Operating Junction Temperature
Tstg
Storage Temperature
Mounting 
Torque
Mass
Mounting M5
Terminal M5
A.C.1minute
Recommended Value 2.5 3.9 25 40
Recommended Value 1.5 2.5 15 25
3
W
A
10 V
5 V
100
A/ s
2500 V
40 125
40 125
4.7 48
2.7 28 
170
N m
f B
g
Unit
A
Symbol Item Conditions Ratings
4
Unit
I
DRM
Repetitive Peak Off-State Current, max.
I
RRM
Repetitive Peak Reverse Current, max.
at V
DRM
, single phase, half wave, Tj 125
at V
DRM
, single phase, half wave, Tj 125
V
TM
Peak On-State Voltage, max.
IGTV
GT
Gate Trigger Current/Voltage, max.
V
GD
Non-Trigger Gate, Voltage. min.
tgt
Turn On Time, max.
dv dt
Critical Rate of Rise of Off-State Voltage, min.
I
H
Holding Current, typ.
On-State Current 75A, Tj 125 Inst. measurement
Tj 25 IT1A VD6V
mA
4 mA
1.50 V
50/3
Tj 125 V
D
1
2
V
DRM
IT25A IG100mA Tj 25 V
D
1
2
V
DRMdIG
/dt 0.1A/ s
0.25
mA/V
V
10
Tj 125 , V
D
2
3
V
DRM
, Exponential wave.
Tj 25
I
L
Lutching Current, typ.
Rth j-c Thermal Impedance, max.
Tj 25 
Junction to case
500
s
V/ s
50
mA
100 mA
0.80
/W
Electrical Characteristics
mark Thyristor and Diode part. No mark Thyristor part
PK PE
PD KK
Power Thyristor/Diode Module PK25GB series are designed for various rectifier circuits 
and power controls. For your circuit application. following internal connections and wide 
voltage ratings up to 800V are available. and electrically isolated mounting base make 
your mechanical design easy.