LITTELFUSE HT34B

Teccor® brand Thyristors
Standard Bidirectional DIAC Trigger
HTxxx & HTMxxx & STxxx Series
Description
The HTM, HT, and ST series of bilateral trigger DIACs offer
a range of voltage characteristics from 27V to 70V. A DIAC
semiconductor is a full-wave or bidirectional Thyristor. It is
triggered from a blocking state to a conduction state for
either polarity of applied voltage whenever the amplitude of
applied voltage exceeds the breakover voltage of the DIAC.
Features & Benefits
t
compliant
ST Series:
t#JMBUFSBMUSJHHFSJOHEFWJDF
t(MBTTQBTTJWBUFE
junctions
Schematic Symbol
t&QPYZ4.QBDLBHF
(DO-214)
t)JHIUFNQFSBUVSFTPMEFS
bonded die attachment
t8JEFWPMUBHFSBOHF
selections
HTM/HT Series:
t-POHUFSNSFMJBCJMJUZ
t.*/*.&-'%0USJHHFS
package
t1BSBNFUFSTUBCJMJUZ
t3FMJBCMFCBSSJFSBHBJOTU
junction contamination
Applications
DIACs are used to trigger Triacs and SCRs in phase control
circuits for lamp dimming, universal motor speed control,
and heat control. They are used also for triggering
transistors in solid state ballast lighting controls.
Absolute Maximum Ratings
ITRM
Parameter
Test Conditions
Pulse On-State Current
120PPS, TA ≤ 40°C
pulse width = 10 μS
Min
Max
2
1.5(*)
Unit
A
TS
Storage Temperature Range
-40
+125
°C
TJ
Operating Junction Temperature
-40
+125
°C
See Product
Selector Table
mW
PD(AV)
Device Power Dissipation
TA = -40°C to +40°C
(*)Only Applies to HT-60
Notes:
1. Service Dissipation (at TA= -40°C to +40°C): 250mW for DO-35 and MINIMELF/SOD-80
and 300mW for DO214
2. Above +40°C, Derate: 3.6mW/°C for DO-35 and MINIMELF/SOD-80
and 3mW/°C for DO214
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
337
Revised: July 9, 2008
HTxxx & HTMxxx & STxxx Series
DIACs
Symbol
Teccor® brand Thyristors
Standard Bidirectional DIAC Trigger
Electrical Characteristics (TJ = 25°C, unless otherwise specified)
Symbol
VBO
ΔVBO
VBB
Description
Test Conditions
Min
Max
Unit
Breakover/Trigger Voltage
50/60Hz Sine Wave
See Product
Selector Table
See Product
Selector Table
V
Breakover Voltage Symmetry
+VBO to -VBO
2(Note 1)
V
Δ Breakback Voltage(Note 4)
VBB (DYN)
VBO to V10mA
5
V
VBO to V
15
V
10
V
(*)
6mA
Dynamic Δ Breakback Voltage(Notes 2 & 3)
120 PPS
Breakover Current
50/60Hz Sine Wave
IBO
15
μA
3. Typical switching time is 900 nano-seconds measured at IPK (Figure 4) across a
20 Ω resistor (Figure 5). Switching time is defined as rise time of IPK between the
10% to 90% points
4. See V-I Characteristics
Static Characteristics - Not Applicable
(*) Only Applies to HT-60
Electrical Characteristic Notes:
1. Breakover voltage symmetry as close as 1V is available from the factory for
these products.
2. See Figure 4 and Figure 5 for test circuit and waveforms.
Product Selector
Package Availability
Part Number
VBO
MINIMELF
DO-35
DO-214
MIN
MAX
XX-32
—
HT-32
ST-32
27V
37V
XX-32A/ 5761
—
HT-32A
—
28V
36V
HTM-32B
HT-32B
ST-32B
30V
34V
XX-34B
—
HT-34B
ST-34B
32V
36V
XX-35
—
HT-35
ST-35
30V
40V
XX-36A/ 5762
—
HT-36A
ST-36A
32V
40V
XX-36B
—
HT-36B
ST-36B
34V
38V
XX-40
—
HT-40
ST-40
35V
45V
XX-60
—
HT-60
—
56V
70V
XX-32B/ 5761A
“XX” = HTM for MINIMELF
HT for DO-35
ST for DO-214
Thermal Resistances
Symbol
RR(J-L)
RR(J-A)
Description
Junction to Lead
Junction to Ambient
Test Conditions
Value
Unit
Maximum Lead Temperature: 85°C
DO-35
100
°C/W
Maximum Lead Temperature: 90°C
DO-214
65*
°C/W
Maximum Lead Temperature: 87°C
MINIMELF
75
°C/W
Free-Air
DO-35
278
°C/W
* Mounted on 1 cm2 copper foil surface; two-ounce copper foil
HTxxx & HTMxxx & STxxx Series
338
Revised: July 9, 2008
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Teccor® brand Thyristors
Standard Bidirectional DIAC Trigger
Figure 2: Typical DIAC/Triac Full-wave Phase Control
Circuit
Figure 1: V-I Characteristics
Resistive Load
3.3 k
Triac
MT2
200 k
120 V ac
60 Hz
G
MT1
Diac
0.1 μF
100 V
Figure 3: Repetitive Peak On-state Current vs. Pulse Duration
Repetitive Peak On-state Current (ITRM) – Amps
10
5.0
3.0
2.0
HT-32x, -34x, -35, -36x, -40
HT-5761, -5761A, -5762
ST-32x, -34x, -35, -36x, -40
HTM-32B
1.0
0.5
0.3
0.2
0.1
HT-60
0.05
Safe Operating
Area
0.03
0.02
.01
.005
.003
.002
PULSE REPETITION RATE = 120 pps
TA = 40 ˚C
.001
1
2
4
6 10
20
40 60 100
200
400
1000
2000
4000
10000
Figure 4: Normalized VBO Change
vs. Junction Temperature
DIACs
Base Pulse Duration – μs
Figure 5: Test Circuit Waveforms
(Refer to Figure 5)
6%
4%
VBO Change -- %
2%
0%
-2%
-4%
-6%
-8%
-40
-20
0
20
40
60
80
100
120
140
Junction Temperature (TJ) -- °C
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
339
Revised: July 9, 2008
HTxxx & HTMxxx & STxxx Series
Teccor® brand Thyristors
Standard Bidirectional DIAC Trigger
Figure 6: Circuit Used to Measure DIAC
Characteristics (Refer to Figure 4)
47 k
Figure 7: Peak Output Current vs. Triggering
Capacitance (Per Figure 5 with RL of 20 Ω)
300
100 k
Peak Output Current (IPK) – mA
*
D.U.T.
RL
VC
CT
0.1 μF
IL
120 V rms
60 Hz
20 1%
250
200
150
V
35
e)
vic
De
l(
ica
Typ
100
50
0
* Adjust for one firing in each half cycle. D.U.T. = Diac
.01
.02
.03
.04
.05
.06
.07
.08
.09
.10
Triggering Capacitance (CT) – μF
Soldering Parameters
Pre Heat
- Temperature Min (Ts(min))
150°C
- Temperature Max (Ts(max))
200°C
- Time (min to max) (ts)
60 – 190 secs
Average ramp up rate (Liquidus Temp
(TL) to peak
TS(max) to TL - Ramp-up Rate
Reflow
Pb – Free assembly
5°C/second max
5°C/second max
- Temperature (TL) (Liquidus)
217°C
- Time (min to max) (ts)
60 – 150 seconds
Peak Temperature (TP)
260 °C
Time within 5°C of actual peak
Temperature (tp)
20 – 40 seconds
Ramp-down Rate
5°C/second max
Time 25°C to peak Temperature (TP)
8 minutes Max.
Do not exceed
280°C
HTxxx & HTMxxx & STxxx Series
tP
TP
Temperature
Reflow Condition
Ramp-up
TL
tL
TS(max)
Ramp-do
Ramp-down
Preheat
TS(min)
tS
25
time to peak temperature
340
Revised: July 9, 2008
Time
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Teccor® brand Thyristors
Standard Bidirectional DIAC Trigger
Physical Specifications
Reliability/Environmental Tests
Terminal Finish
100% Matte-Tin Plated/ Pb-Free Solder
Dipped
Body Material
DO-214: UL recognized epoxy meeting
flammabilty classification 94V-0.
DO-35/MINIMELF: Glass case body
Test
High Temperature
Voltage Blocking
Temperature Cycling
DO-214: Copper Alloy
DO-35/MINIMELF: Copper Clad Iron
Lead Material
Specifications and Conditions
Temperature/
Humidity
MIL-STD-750, M-1040, Cond A Applied
80% of Rated Min VBO (VAC-peak) @
125°C for 1008 hours
MIL-STD-750, M-1051,
100 cycles; -40°C to +150°C;
15-min dwell-time
EIA / JEDEC, JESD22-A101
1008 hours; 80% of Rated Min VBO (VDC):
85°C; 85%
rel humidity
Design Considerations
High Temp Storage
MIL-STD-750, M-1031,1008 hours; 150°C
Careful selection of the correct device for the application’s
operating parameters and environment will go a long
way toward extending the operating life of the Thyristor.
Overheating and surge currents are the main killers of
DIACs. Correct mounting, soldering, and forming of the
leads also help protect against component damage.
Low-Temp Storage
1008 hours; -40°C
Thermal Shock
MIL-STD-750, M-1056
10 cycles; 0°C to 100°C; 5-min dwell
time at each temperature; 10 sec (max)
transfer time between temperature
Autoclave
EIA / JEDEC, JESD22-A102 168 hours
(121°C at 2 ATMs) and 100% R/H
Resistance to
Solder Heat
MIL-STD-750 Method 2031
Solderability
ANSI/J-STD-002, category 3, Test A
Lead Bend
MIL-STD-750, M-2036 Cond E
Burn-in
1 firing per 1/2 cycle, 168 hours
Dimensions – MINIMELF / SOD-80 (MM Package)
A
C
Dimensions
B
E
D
.002 E-F
Inches
Millimeters
Min
Typ
Max
Min
Typ
Max
A
0.125
0.134
0.142
3.18
3.40
3.61
B
0.066
0.068
0.070
1.68
1.73
1.78
C
0.012
0.018
0.020
0.30
0.46
0.51
D
—
0.063
—
—
1.60
—
F
Dimensions – DO-35 (Y Package)
A
Dimension
A
(Note 1)
B
(Note 2)
C
(Note 1)
Inches
Millimeters
Min
Max
Min
Max
0.060
0.090
1.530
2.280
0.015
0.381
B
C
D (TYP.)
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
0.165
3.430
4.190
D
0.018
0.022
0.458
0.558
E
1.000
25.400
Notes:
1. Package contour optional within dimensions A and C. Slugs, if any, shall be included
within this cylinger but shall not be subject to
the minimum limit of Dimention A.
2. Lead diameter is not controlled in this zone to allow for flash, lead finish build-up and
minor irregularities other than slugs.
B
E
TYP.
0.135
341
Revised: July 9, 2008
HTxxx & HTMxxx & STxxx Series
DIACs
C
Teccor® brand Thyristors
Standard Bidirectional DIAC Trigger
Dimensions – DO-214 (S Package)
B
D
H
F
L
C
A
E
J
G
K
Inches
Dimension
TC / T LTEMPERATURE
MEASUREMENT POINT
2.80
(.110”)
2.00
(.079”)
2.00
(.079”)
Recommended Soldering Pad Outline
(Reference Only)
Millimeters
Min
Max
Min
A
0.140
0.155
3.56
Max
3.94
B
0.205
0.220
5.21
5.59
C
0.077
0.083
1.96
2.11
D
0.166
0.180
4.22
4.57
E
0.036
0.063
0.91
1.60
F
0.066
0.083
1.67
2.11
G
0.004
0.008
0.10
0.20
H
0.077
0.086
1.96
2.18
J
0.043
0.053
1.09
1.35
K
0.008
0.012
0.20
0.30
L
0.039
0.049
0.99
1.24
Packing Options
Part
Number
Quantity
Marking
Package
Weight/
Unit
Packing
Mode
Base
Quantity
Reel
Box
HTM-xxxRP
—
MINIMELF
0.040g
Tape & Reel
5000
2500
—
HT-xxxRP
—
DO35
0.150g
Tape & Reel
5000
5000
—
HT-xxx
—
DO35
0.150g
Bulk
5000
—
5000
STxxx
DO214
0.075g
Tape & Reel
2500
2500
—
ST-xxxRP
HTxxx & HTMxxx & STxxx Series
342
Revised: July 9, 2008
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Teccor® brand Thyristors
Standard Bidirectional DIAC Trigger
DO-214 Embossed Carrier Reel Pack (RP) Specifications
Meets all EIA-481-1 Standards
0.157
(4.0)
0.472
(12.0)
0.36
(9.2)
0.315
(8.0)
0.512 (13.0) Arbor
Hole Dia.
0.059 DIA
(1.5)
Cover tape
12.99
(330.0)
Dimensions
are in inches
(and millimeters).
0.49
(12.4)
Direction of Feed
DO-35 Reel Pack (RP) Specifications
Meets all EIA-296 Standards
DO-35
2.063
(52.4)
DIACs
10.0 - 14.0
(254.0 - 356.0)
3.15 (80.0) TYP
0.956
(24.3)
Direction of Feed
0.252
(6.4)
Dimensions
are in inches
(and millimeters).
0.197
(5.0)
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
343
Revised: July 9, 2008
HTxxx & HTMxxx & STxxx Series
Teccor® brand Thyristors
Standard Bidirectional DIAC Trigger
MINIMELF Reel Pack (RP) Specifications
1.5mm
4mm
8mm
5.8mm
4mm
177.8mm
13mm Abor
Hole Diameter
9.4mm
DIRECTION OF FEED
Part Numbering System
Part Marking System
x T M xxxx xx
Package Type:
H = DO-35 (with leads) or
MINIMELF (no leads)
S = DO-214
Device Type:
T = DIAC
Package Type Designator:
M: MINIMELF
(surface mount version without leads)
HTxxx & HTMxxx & STxxx Series
DO-35 & MINIMELF: No marking
Packaging:
Blank = Bulk Pack
RP = Reel Pack
DO-214:
First Line: Part Number
Second Line: Date Code
Voltage Range:
32= 27V to 37V
32A/5761= 28V to 36V
32B/5761A= 30V to 34V
34B= 32V to 36V
35= 30V to 40V
36A/5762= 32V to 40V
36B= 34V to 38V
40= 35V to 45V
60= 56V to 70V
344
Revised: July 9, 2008
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.