Thyristor Product Catalog
8
DO-35
DO-214AA
Bilateral Trigger Diacs
HT and ST Series
8
General Description
Teccor’s "HT" and "ST" Series of bilateral trigger diacs offers a
range of voltage characteristics from 27 to 70 volts.
The diac semiconductor is a full-wave or bidirectional thyristor. It
is triggered from a blocking-to-conduction state for either polarity
of applied voltage whenever the amplitude of applied voltage
exceeds the breakover voltage rating of the diac.
The Teccor line of diacs features glass-passivated junctions to
ensure long term device reliability and parameter stability.
Teccor’s glass offers a rugged, reliable barrier against junction
contamination.
The diac specifications listed in this data sheet are for standard
products. Special parameter selections such as close tolerance
voltage symmetry are available. Please consult the factory for
more information for custom design applications. Suffix RP
signifies tape-and-reel packing. Example: HT32RP.
Features
•
•
•
•
•
•
Glass passivated junctions
Wide voltage range selections
Epoxy SMT package
High temperature solder bonded die attachment
DO-35 trigger package
Pre-tinned leads
"ST" Series
"HT" Series
Teccor Electronics
+1 972-580-7777
http://www.teccor.com
8-1
Bilateral Trigger Diacs
Thyristor Product Catalog
ELECTRICAL CHARACTERISTICS T
C
= 25°C
Part No.
V
BO
Breakover Voltage
(Forward and
Reverse)
∆V
BO
Breakover Voltage
Symmetry
∆V
BO
=
[ | +V
BO
| - | - V
BO
| ]
Volts
DO-214AA
DO-35
HT-32
HT-32A / HT-5761
HT-32B / HT-5761A
HT-34B
HT-35
HT-36A / HT-5762
HT-36B
HT-40
HT-60
ST-34B
ST-35
ST-36A
ST-36B
ST-40
MIN
27
28
30
32
30
32
34
35
56
MAX
37
36
34
36
40
40
38
45
70
MAX
3 (1)
2 (1)
2 (1)
2 (1)
3 (1)
2 (1)
2 (1)
3 (1)
4
MIN
10 (2)
7 at 10mA (4)
7 at 10mA (4)
10 (2)
10 (2)
7 at 10mA (4)
10 (2)
10 (2)
20 (2)
MAX
25
25
25
25
25
25
25
25
25
MAX
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
1.5
Volts
V
BB
Dynamic
Breakback
Voltage
(3)
|
∆V±
|
Volts
I
BO
Peak Breakover
Current
at
Breakover
Voltage
µAmps
I
TRM
Peak Pulse
Current
for 10µs
120 PPS
T
A
≤
40°C
Amps
General Notes
•
•
Lead solder temperature is +230°C max. for 10 seconds max.;
≥
1/16" (1.59mm) from case.
See “Package Dimensions” section of this catalog.
LOAD UP TO
1500 WATTS
3.3 KΩ
TRIAC
Q2015L5
200 KΩ
120 VAC
60 Hz
G
MT1
MT2
Electrical Specification Notes
(1)
(2)
(3)
Breakover Voltage symmetry as close as 1.0V is available from
factory on these products.
See Figures 8.4 and 8.5 for Test Circuit and waveforms.
Typical switching time is 900 nano-seconds measured at I
PK
(see Figure 8.4) across a 20Ω resistor (see Figure 8.5). Switching
time defined as rise time of I
PK
between the 10% to 90% points.
See Figure 8.7.
0.1
µF
100 V
(4)
HT-35
BILATERAL
TRIGGER
DIAC
Bilateral Trigger DIAC Specifications
•
Maximum Ratings, Absolute-Maximum Values
Maximum Trigger Firing Capacitance: 0.1
µ
F
Device Dissipation (at T
A
= -40° to +40°C): 250mW for
DO-35 and 300mW for DO-214AA
Derate Above +40°C: 3.6mW/°C for DO-35 and 3mW/°C for
DO-214AA
•
Temperature Ranges
Storage: -40°C to +125°C
Operating (Junction): -40°C to +125°C
Figure 8.1
Typical Diac-Triac Full-Wave Phase Control Circuit using
Lower Voltage Diacs
HT and ST Series Thermal Resistance
Junction to Lead - R
θ
JL
: °C/W
Junction to Ambient [R
θ
JA
]: °C/W
(based on maximum lead temperature of 90°C for
DO-214AA and 85°C for DO-35 devices)
Y
S
DO-35
DO-214AA
100 [278] °C/W
65 [200] °C/W
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8-2
Teccor Electronics
+1 972-580-7777
Thyristor Product Catalog
Bilateral Trigger Diacs
10
5.0
Repetitive Peak On-State Current (I
TRM
) - Amps
3.0
2.0
1.0
0.5
0.3
0.2
0.1
0.05
0.03
0.02
.01
.005
.003
.002
.001
1
2
4
6
10
20
40 60 100
200
400 600 1000
2000
4000
10000
PULSE REPETITION RATE =120 pps
TA = 40˚C
ST or HT- 32x, -34x, -35, -36x, -40
HT-5761, -5761A, -5762
HT-60
SAFE OPERATING
AREA
Base Pulse Duration - Microseconds
Figure 8.2
Repetitive Peak On-State Current vs Pulse Duration
+8
Percentage of VBO Change - %
+6
+4
ST or HT- 32x, 34x, 35, 36x, 40
HT-5761, 5761A, 5762
VC
+VBO
∆V+
HT-60
+2
0
-VBO
0
t
∆V-
IL
+IPK
0
t
-2
-4
-6
0
-40
-20
0
+20 +40 +60 +80 +100 +120 +140
-IPK
Junction Temperature (TJ) - ˚C
Typical pulse base width is 10µSec.
Figure 8.3
Normalized V
BO
Change vs Junction Temperature
Figure 8.4
Test Circuit Waveforms (See Figure 8.5.)
Teccor Electronics
+1 972-580-7777
http://www.teccor.com
8-3
Bilateral Trigger Diacs
Thyristor Product Catalog
Current
47 kΩ
*
100 kΩ
D.U.T.
RL
VC
CT
O.1
µF
IL
20Ω
1%
-VBO
10mA
V
Breakover
Current
IBO
Voltage
+VBO
Breakover
Voltage
VBO
120V RMS
60 Hz
*Adjust for one firing in each half cycle. D.U.T. = Diac
Figure 8.5
Circuit Used to Measure Diac Characteristics
(See Figure 8.4.)
Figure 8.7
V-I Characteristics
300
Peak Output Current (IPK) - mA
250
200
Per Figure 8.5 with
RL of 20Ω
CE
VI
)
150
TY
C
PI
AL
(35
V
DE
100
50
0
.01 .02 .03 .04 .05 .06 .07 .08 .09 .10
Triggering Capacitance (CT) -
µF
Figure 8.6
Peak Output Current vs Triggering Capacitance
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8-4
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