ACST4 Series

4 A - 800 V Overvoltage protected AC switch

Catalog

4 A - 800 V Overvoltage protected AC switch

Part	Mounting Type	Supplier Device Package	Current - Hold (Ih) (Max) [Max]	Triac Type	Current - Gate Trigger (Igt) (Max) [Max]	Current - Non Rep. Surge 50, 60Hz (Itsm)	Current - On State (It (RMS)) (Max) [Max]	Configuration	Package / Case	Voltage - Gate Trigger (Vgt) (Max)	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Off State	Voltage - Gate Trigger (Vgt) (Max) [Max]
STMicroelectronics ACST4-7SB	Surface Mount	DPAK	35 mA	Standard	25 mA	30 A 33 A	4 A	Single	DPAK (2 Leads + Tab) SC-63 TO-252-3	1.1 V	-30 °C	125 ¯C	700 V
STMicroelectronics ACST4-8SB-TR	Surface Mount	DPAK	20 mA	Logic - Sensitive Gate	10 mA	30 A 33 A	4 A	Single	DPAK (2 Leads + Tab) SC-63 TO-252-3				800 V	1 V
STMicroelectronics ACST4-7CB-TR	Surface Mount	DPAK	35 mA	Standard	25 mA	30 A 33 A	4 A	Single	DPAK (2 Leads + Tab) SC-63 TO-252-3	1.1 V	-30 °C	125 ¯C	700 V

Catalog

4 A - 800 V Overvoltage protected AC switch

Key Features

• TO-220FPAB insulated package:

- complies with UL standards (File ref : E81734)

- insulation voltage: 2000 VRMS

• Benefits:

- Enables equipment to meet IEC 61000-4-5

- High off-state reliability with planar technology

- Needs no external overvoltage protection

- Reduces the power passive component count

- High immunity against fast transients described in IEC 61000-4-4 standards

Description

The ACST4 series belongs to the ACS / ACST power switch family. This high performance device is suited to home appliances or industrial systems and drives loads up to 4 A. This ACST4 switch embeds a Triac structure with a high voltage clamping device to absorb the inductive turn-off energy and withstand line transients such as those described in the IEC 61000-4-5 standards. The ACST410 needs a low gate current to be activated (IGT< 10 mA) and still shows a high electrical noise immunity complying with IEC standards such as IEC 61000-4-4 (fast transient burst test).