December 2008

Rev 1

1/12

ACST10

Transient protected AC power switch

Features

Benefits

described in IEC 61000-4-4 standards

Applications

industrial control systems

– Universal drum motor of washing machine

– Compressor for fridge or air conditioner

Description

The ACST10 series belongs to the ACS/ACST

family built with the ASD (application specific

discrete) technology. This high performance

device is adapted to home appliances or industrial

systems, and drives loads up to 10 A.

This ACST10 switch embeds a TRIAC structure

and a high voltage clamping device able to absorb

the inductive turn-off energy and withstand line

transients such as those described in the IEC

61000-4-5 standards. The ACST10-7S needs

only low gate current to be activated

immunity complying with IEC standards such as

IEC 61000-4-4 (Fast transient burst test). The

ACST10-7C offers an extremely high static dV/dt

immunity of 2 kV/µs minimum.

Figure 1.

Functional diagram

Table 1.

Device summary

Symbol

Value

Unit

10

A

700

V

10 or 35

mA

TO-220AB

ACST10-7xT

TO-220FPAB

ACST10-7xFT

COM

OUT

OUT

G

COM

OUT

G

G

COM

OUT

www.st.com