HG
FEA TU RES
The three layer, two terminal, axial lead, hermetically sealed diacs are
designed specifically for triggering thyristors. They demonstrate low breakover
current at breakover voltage as they withstand peak pulse current, The breakover
symmetry is within three volts(DB3,DC34,DB4) or four volts(DB6). These diacs are
intended for use in thyrisitors phase control , circuits for lamp dimming, universal
motor speed control ,and heat control.
SILIC O N BID IR EC TIO N A L D IA C
D O -3 5(G L A S S )
1.083(27.5)
MIN
0.079(2.0)
MAX
DIA
0.150(3.8)
MAX
JF's DB3/DC34/DB4/DB6 are bi-directional trigged diode designed to operate
in conjunction with Triacs and SCR's
0.020(0.52)
MAX
DIA
1.083(27.5)
MIN
A BSO LUTE RA TIN G S(LIM ITIN G V A LU ES)
Dimensions in inches and (millimeters)
P
C
I
TRM
T
STG
/T
J
Power Dissipation on Printed
Circuit(L=10mm)
Repetitive Peak on-state
Current
Storage and Operating Junction Temperature
T
A
=50 C
tp=10
µ
s
F=100Hz
2.0
2.0
150
mW
2.0
16
A
C
-40 to+125/-40 to 110
ELEC TRIC A L C H A RA C TER ISTIC S
V
BO
I +V
BO
I-
I - V
BO
I
I+ VI
V
O
I
BO
tr
I
B
Breakover Voltage (Note 2 )
Breakover Voltage Symmetry
Dynamic Breakover Voltage (Note1)
Output Voltage (Note 1 )
Breakover Current (Note1)
Rise Time (Note1)
Leakage Current (Note1)
C=22nF(Note 2)
See diagram 1
C=22nF(Note 2)
See diagram 1
I=(I
BO
to IF=10mA)
See Diagram 1
See Diagram 2
C=22nF(Note 2)
See Diagram 3
V
B
=0.5 V
BO
max
see diagram 1
Min
Typ
Max
Max
Min
Min
Max
Typ
Max
28
32
36
30
34
38
+3
35
40
45
56
60
70
+4
V
V
V
5
100
1.5
10
V
µA
µS
µA
Notes
: 1.Electrical characteristics applicable in both forward and reverse directions.
2.Connected in parallel with the devices.
D IA G RA M 1: C urre nt-vo lta ge c ha ra cteristic s
+I
F
10mA
D IA G RA M 2: Te st c ircuit fo r o utpu t v o ltag e
220V
50Hz
10KΩ
500KΩ
0.1
µ
F
D.U.T
V
O
R=20Ω
I
BO
I
B
-V
D IA G RA M 3: Te st c ircuit see d ia gra m 2 a djust R fo r
I
P
= 0.5 A
0.5 V
BO
V
V
BO
+V
90%
I
P
-I
F
10%
tr
FIG .1 -Po w e r d issip atio n ve rsus a m bie nt
tem pe ra tu re (m a xim um va lue s)
160
140
120
100
80
60
40
20
0
Tamb( C)
0 10 20 30 40
60 70 80
100 110 120 130
P (mW)
FIG .2 -Re la tive v a ria tio n of V B O ve rsus ju nctio n
tem pe ra tu re(typic a l v a lu es)
V
BO
(T
J
)
V
BO
(T
J
=25 C)
1.08
1.06
1.04
1.02
T
J
(C)
125
50
75
100
125
FIG .3 -Pe a k p ulse c urre nt ve rsus p u lse d ura tio n
(m a xim um va lu es)
I
TRM
(A)
2
1
F=100Hz
T
J
initial=25 C
1.00
25
0.1
tp(
µ
s)
0.01
10
100
1000
10000
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