ST34B - Littelfuse Inc - Datasheet.Directory

337

Revised: July 9, 2008

Teccor® brand Thyristors

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

337

Teccor® brand Thyristors

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

HTxxx & HTMxxx & STxxx Series

Standard Bidirectional DIAC Trigger

DIACs

HTxxx & HTMxxx & STxxx Series

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.

Description

Features & Beneﬁts

t compliant

t#JMBUFSBMUSJHHFSJOHEFWJDF

t(MBTTQBTTJWBUFE

junctions

t8JEFWPMUBHFSBOHF

selections

t-POHUFSNSFMJBCJMJUZ

t1BSBNFUFSTUBCJMJUZ

t3FMJBCMFCBSSJFSBHBJOTU

junction contamination

ST Series:

t&QPYZ4.QBDLBHF

(DO-214)

t)JHIUFNQFSBUVSFTPMEFS

bonded die attachment

HTM/HT Series:

t.*/*.&-'%0USJHHFS

package

Schematic Symbol

Absolute Maximum Ratings

Symbol Parameter Test Conditions Min Max Unit

ITRM Pulse On-State Current 120PPS, TA ≤ 40°C

pulse width = 10 μS

1. 5 (*)

TSStorage Temperature Range -40 +125 °C

JOperating Junction Temperature -40 +125 °C

PD(AV) Device Power Dissipation TA = -40°C to +40°C See Product

Selector Table mW

(*)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

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.

Applications

338

Revised: July 9, 2008

Teccor® brand Thyristors

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

Standard Bidirectional DIAC Trigger

HTxxx & HTMxxx & STxxx Series

Thermal Resistances

Symbol Description Test Conditions Value Unit

RR(J-L) Junction to Lead

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

RR(J-A) Junction to Ambient Free-Air DO-35 278 °C/W

* Mounted on 1 cm2 copper foil surface; two-ounce copper foil

Electrical Characteristics (T

J = 25°C, unless otherwise speciﬁed)

Symbol Description Test Conditions Min Max Unit

VBO Breakover/Trigger Voltage 50/60Hz Sine Wave See Product

Selector Table

See Product

Selector Table V

ΔVBO Breakover Voltage Symmetry +VBO to -VBO 2(Note 1) V

VBB Δ Breakback Voltage(Note 4)

VBO to V10mA 5V

VBO to V6mA

(*) 15 V

VBB (DYN) Dynamic Δ Breakback Voltage(Notes 2 & 3) 120 PPS 10 V

IBO Breakover Current 50/60Hz Sine Wave 15 μA

(*) 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.

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

Product Selector

Part Number Package Availability VBO

MINIMELF DO-35 DO-214 MIN MAX

XX-32 — HT-32 ST-32 27V 37V

XX-32A/ 5761 — HT-32A — 28V 36V

XX-32B/ 5761A 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” = HTM for MINIMELF

HT for DO-35

ST for DO-214

339

Revised: July 9, 2008

Teccor® brand Thyristors

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

339

Teccor® brand Thyristors

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

HTxxx & HTMxxx & STxxx Series

Standard Bidirectional DIAC Trigger

DIACs

Figure 1: V-I Characteristics Figure 2: Typical DIAC/Triac Full-wave Phase Control

Circuit

120 V ac

60 Hz

Resistive Load

3.3 k

200 k

0.1 μF

100 V

Diac

Triac MT2

MT1



































Figure 3: Repetitive Peak On-state Current vs. Pulse Duration

4000010004000200010040026

.001

.002

.003

.005

0.1

0.2

0.3

3.0

0.5

5.0

.01

0.02

0.03

0.05

1.0

2.0

Repetitive Peak On-state Current (ITRM) – Amps

Base Pulse Duration – μs

Safe Operating

Area

10 20 40 60 100

PULSE REPETITION RATE = 120 pps

TA = 40 ˚C

HT-60

HTM-32B

HT-32x, -34x, -35, -36x, -40

HT-5761, -5761A, -5762

ST-32x, -34x, -35, -36x, -40

Figure 4: Normalized VBO Change

vs. Junction Temperature

-8%

-6%

-4%

-2%

-40 -20 0 20 40 60 80 100 120 140

Junction Temperature (T

) -- °C

Change -- %

Figure 5: Test Circuit Waveforms

(Refer to Figure 5)

























340

Revised: July 9, 2008

Teccor® brand Thyristors

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

Standard Bidirectional DIAC Trigger

HTxxx & HTMxxx & STxxx Series

Figure 6: Circuit Used to Measure DIAC

Characteristics (Refer to Figure 4)

Figure 7: Peak Output Current vs. Triggering

Capacitance (Per Figure 5 with RL of 20 Ω)

120 V rms

60 Hz

47 k

D.U.T.

20 

100 k

0.1 μF

* Adjust for one ﬁring in each half cycle. D.U.T. = Diac

Triggering Capacitance (C

) – μF

Peak Output Current (IPK) – mA

100

150

200

250

300

.01 .02 .03 .04 .05.06 .07 .08 .09 .10

Typical (35

V Device)

Soldering Parameters

Reﬂow Condition Pb – Free assembly

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 5°C/second max

TS(max) to TL - Ramp-up Rate 5°C/second max

Reﬂow - 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

Time

Temperature

TS(max)

TS(min)

time to peak temperature

Preheat

reheat

Ramp-upRamp-up

Ramp-down

341

Revised: July 9, 2008

Teccor® brand Thyristors

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

341

Teccor® brand Thyristors

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

HTxxx & HTMxxx & STxxx Series

Standard Bidirectional DIAC Trigger

DIACs

Physical Speciﬁcations

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

Lead Material DO-214: Copper Alloy

DO-35/MINIMELF: Copper Clad Iron

Reliability/Environmental Tests

Test Speciﬁcations and Conditions

High Temperature

Voltage Blocking

MIL-STD-750, M-1040, Cond A Applied

80% of Rated Min VBO (VAC-peak) @

125°C for 1008 hours

Temperature Cycling

MIL-STD-750, M-1051,

100 cycles; -40°C to +150°C;

15-min dwell-time

Temperature/

Humidity

EIA / JEDEC, JESD22-A101

1008 hours; 80% of Rated Min VBO (VDC):

85°C; 85%

rel humidity

High Temp Storage MIL-STD-750, M-1031,1008 hours; 150°C

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)

.002 E-F

Dimensions 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 —

Design Considerations

Dimensions – DO-35 (Y Package)

TYP. D (TYP.)

Dimension Inches Millimeters

Min Max Min Max

A (Note 1) 0.060 0.090 1.530 2.280

B (Note 2) 0.015 0.381

C (Note 1) 0.135 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.

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.

342

Revised: July 9, 2008

Teccor® brand Thyristors

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

Standard Bidirectional DIAC Trigger

HTxxx & HTMxxx & STxxx Series

Dimensions – DO-214 (S Package)

KJE

T / T TEMPERATURE

MEASUREMENT POINT

Recommended Soldering Pad Outline

(Reference Only)

2.80

(.110”)

2.00

(.079”)

2.00

(.079”)

Dimension Inches Millimeters

Min Max Min Max

A 0.140 0.155 3.56 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 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

ST-xxxRP STxxx DO214 0.075g Tape & Reel 2500 2500 —

343

Revised: July 9, 2008

Teccor® brand Thyristors

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

343

Teccor® brand Thyristors

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

HTxxx & HTMxxx & STxxx Series

Standard Bidirectional DIAC Trigger

DIACs

DO-214 Embossed Carrier Reel Pack (RP) Speciﬁcations

DO-35 Reel Pack (RP) Speciﬁcations

0.472

(12.0) 0.36

(9.2)

0.315

(8.0)

0.157

(4.0)

0.49

(12.4)

0.512 (13.0) Arbor

Hole Dia.

12.99

(330.0)

Dimensions

are in inches

(and millimeters).

Direction of Feed

0.059 DIA

(1.5) Cover tape

3.15 (80.0) TYP

DO-35

Dimensions

are in inches

(and millimeters).

Direction of Feed

10.0 - 14.0

(254.0 - 356.0)

0.252

(6.4)

0.956

(24.3)

0.197

(5.0)

2.063

(52.4)

Meets all EIA-481-1 Standards

Meets all EIA-296 Standards

344

Revised: July 9, 2008

Teccor® brand Thyristors

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

Speciﬁcations are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

Standard Bidirectional DIAC Trigger

HTxxx & HTMxxx & STxxx Series

Part Numbering System

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

x xxxx xxTM

Packaging:

Blank

Bulk Pack

RP = Reel Pack

Package Type:

DO-35 (with leads) or

MINIMELF (no leads)

S = DO-214

Device Type:

DIAC

Package Type Designator:

MINIMELF

(surface mount version without leads)

First Line:

Part Number

Second Line:

Date Code

DO-214:

DO-35 & MINIMELF:

No marking

Part Marking System

MINIMELF Reel Pack (RP) Speciﬁcations

13mm Abor

Hole Diameter

177.8mm

9.4mm

DIRECTION OF FEED

1.5mm 4mm

8mm

4mm

5.8mm