Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsThyristors & TriacsTMMDB3TG

1/4

TMMDB3TG

January 2001 - Ed: 2

DIAC

MINIMELF

■

: 32V

■

Low breakover current: 15µA max

■

Breakover voltage range: 30 to 34V

FEATURES

Functioning as a trigger diode with a fixed voltage

reference, the TMMDB3TG can be used in con-

junction with triacs for simplified gate control cir-

cuits or as a starting element in fluorescent lamp

ballasts.

DESCRIPTION

Symbol Parameter Value Unit

TRM

Repetitive peak on-state current

tp=20µs F= 120 Hz

Tstg

Storage temperature range

Operating junction temperature range

-40to+125 °C

ABSOLUTE MAXIMUM RATINGS (limiting values)

Summary of content (4 pages)

PAGE 1
TMMDB3TG ® DIAC FEATURES ■ ■ ■ VBO : 32V Low breakover current: 15µA max Breakover voltage range: 30 to 34V DESCRIPTION Functioning as a trigger diode with a fixed voltage reference, the TMMDB3TG can be used in conjunction with triacs for simplified gate control circuits or as a starting element in fluorescent lamp ballasts.
PAGE 2
TMMDB3TG ELECTRICAL CHARACTERISTICS (Tj = 25°C unless otherwise specified) Symbol VBO Parameter Test Conditions Breakover voltage * C = 22nF ** Value Unit MIN. 30 V TYP. 32 MAX. 34 I VBO1 - VBO2 I Breakover voltage symmetry C = 22nF ** MAX. ±2 V ∆V Dynamic breakover voltage * VBO and VF at 10mA MIN. 9 V VO Output voltage * see diagram 2 (R=20Ω) MIN. 5 V IBO Breakover current * C = 22nF ** MAX. 15 µA see diagram 3 MAX. 2 µs VR = 0.5 VBO max MAX.
PAGE 3
TMMDB3TG Diagram 1: Voltage - current characteristic curve. Diagram 2: Test circuit. 10 kΩ 220 V + IF 500 kΩ D.U.T Rs=0 I C=0.1µF 50 Hz P Vo 10mA T410 R=20 Ω IBO IR -V + V Diagram 3: Rise time measurement. 0,5 VBO V VF lp 90 % VBO - IF 10 % tr Fig. 1: Relative variation of VBO versus junction temperature (typical values) Fig. 2: Repetitive peak pulse current versus pulse duration (maximum values). VBO [Tj] ITRM(A) VBO [Tj = 25°C] 20.0 1.08 F=120Hz Tj initial=25°C 10.0 1.06 1.
PAGE 4
TMMDB3TG Fig. 3: Time duration while current pulse is higher 50mA versus C and Rs (typical values). tp(µs) 40 Tj=25°C 68Ω 35 30 47Ω 25 33Ω 20 15 22Ω 10 10Ω 5 C(nF) 0Ω 0 10 20 50 100 200 500 PACKAGE MECHANICAL DATA (in millimeters) MINIMELF A REF. DIMENSIONS F E Millimeters / B O O /D Min. Typ. Max. Min. Typ. Max. A 3.30 3.40 3.6 0.130 0.134 0.142 B 1.59 1.60 1.62 0.063 0.063 0.064 C 0.40 0.45 0.50 0.016 0.018 0.020 D C Inches 1.50 0.059 C O / 0.