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.

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

R

(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

R

(J-A)

Junction to Ambient

Free-Air

DO-35

278

°C/W

Symbol

Description

Test Conditions

Min

Max

Unit

V

BO

Breakover/Trigger Voltage

50/60Hz Sine Wave

See Product

Selector Table

See Product

Selector Table

V

ΔV

BO

Breakover Voltage Symmetry

+V

V

V

BB

V

5V

V

(*)

15

V

V

BB (DYN)

120 PPS

10

V

I

BO

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 I

20 Ω resistor (Figure 5). Switching time is defined as rise time of I

10% to 90% points

4. See V-I Characteristics

Static Characteristics - Not Applicable

Product Selector

Part Number

Package Availability

V

BO

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