SIEMENS Smart Lowside Power Switch BTS 933 User's Manual
Summary
The BTS 933 is a highly protected N-channel Smart Lowside Power Switch designed for robust power management across diverse switching and linear applications. This component functions as an advanced replacement for traditional electromechanical relays in both 12V and 24V DC systems, handling resistive, inductive, and capacitive loads. The comprehensive manual details its critical features, including thermal shutdown, overload protection, short circuit capability, and overvoltage protection. It is intended for professional engineers developing reliable power circuitry requiring maximum safety and efficiency.
Page 1 Text Content
HITFETBTS 933
Smart Lowside Power Switch Features Product Summary • Logic Level Input Drain source voltage V60VDS • Input Protection (ESD) On-state resistance RDS(on) mΩ • Thermal Shutdown ID(lim) ACurrent limit • Overload protection Nominal load current AID(ISO) • Short circuit protection Clamping energy m JEAS • Overvoltage protection • Current limitation • Maximum current adjustable with external resistor • Current sense • Status feedback with external input resistor • Analog driving possible
Application • All kinds of resistive, inductive and capacitive loads in switching or linear applications • µC compatible power switch for 12 V and 24 V DC applications • Replaces electromechanical relays and discrete circuits
General Description N channel vertical power FET in Smart SIPMOS chip on chip tech- nology. Fully protected by embedded protected functions.
Drain
Overvoltage
dv/dt Current
protection
IN limitation limitation
Over-
Overload
ESD temperature Short circuit
protection
protection protection
Source
HITFET
02.12.1998Semiconductor Group
Page Summary Contents For SIEMENS Smart Lowside Power Switch BTS 933 User's Manual
Manual Details
| Brand | Siemens |
|---|---|
| Pages | 11 |
| File Size | 193.66 KB |
| Published | May 31, 2026 |
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Frequently Asked Questions
What types of loads can I use with this power switch?
It supports all kinds of resistive, inductive, and capacitive loads in switching or linear applications.
What protection features does the BTS 933 include?
Key protections listed are overload trip, short circuit, overvoltage immunity, and thermal shutdown at 150°C.
Does it require external components for full function?
Yes, external resistors can be used to allow for status feedback and precise current sensing.