ACST4
Overvoltage protected AC switch
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DPAK
TO-220FPAB
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Features
• Triac with overvoltage protection
• Low IGT (<10 mA) or high immunity
(IGT<35 mA) version
• High noise immunity: static dV/dt > 1000 V/µs
• TO-220FPAB insulated package: 1500 V rms
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
Applications
• AC mains static switching in appliance and
industrial control systems
• Drive of medium power AC loads such as:
– Universal motor of washing machine drum
– Compressor for fridge or air conditioner
Datasheet - production data
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 4A.
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).
Figure 1. Functional diagram
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Table 1. Device summary
Symbol
Value
Unit
IT(RMS)
4
A
VDRM/VRRM
800
V
IGT(ACST410)
10
mA
IGT(ACST435)
35
mA
TM: ACS is a trademark of STMicroelectronics
June 2014
This is information on a product in full production.
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