Supervisory Circuits

Supervisory circuits are electronic circuits used to monitor and control the operation of other circuits or systems. They are commonly found in appliances, industrial equipment and other electronic systems where reliable operation is required. Supervisory circuits monitor and control the behavior of other circuits and systems, providing feedback and making adjustments as necessary to keep them within acceptable parameters. They are generally composed of several parts, including sensors, comparators, alarms, timers, and relays. The sensors monitor the voltage, current, and temperature of the circuits and systems, while the comparators compare these values to normal operating parameters. Alarms are triggered when parameters are out of range, while the relays are used to activate corrective actions, such as turning off equipment or engaging a fail-safe mode. Timers are typically used to monitor the length of time a certain condition has been present, allowing the supervisor circuit to shut down the system before it is damaged by an enduring failure.

Enable Filter
Manufacturer
Reset
Type
Reset
Mounting Style
Reset
Output Voltage
Reset
Package / Case
Reset
Threshold Voltage
Reset
Number of Inputs Monitored
Reset
Output Type
Reset
Manual Reset
Reset
Watchdog
Reset
Watchdog Timers
Reset
Battery Backup Switching
Reset
Reset Delay Time
Reset
Supply Voltage - Max
Reset
Minimum Operating Temperature
Reset
Maximum Operating Temperature
Reset
Accuracy
Reset
Series
Reset
Qualification
Reset
Packaging
Reset
Image  Information Image Stock Code(▲▼)Description
Manufacturer
Availability ⓘ (▲▼)Price(AUD

(Ex. GST)(▲▼)
Enter Qty TypeMounting StyleOutput VoltagePackage / CaseThreshold VoltageNumber of Inputs MonitoredOutput TypeManual ResetWatchdogWatchdog TimersBattery Backup SwitchingReset Delay TimeSupply Voltage - MaxMinimum Operating TemperatureMaximum Operating TemperatureAccuracySeriesQualificationPackaging
  
                       
BD4858G-TR


Supervisor Open Drain or Open Collector 1 Channel 5-SSOP
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ROHM 0
6 to 16 Weeks Calender.png

AUD 0.2677

Multiples of: 1

Voltage MonitorsSmd/Smt SSOP - 55.8 V1 InputOpen DrainNo Manual Reset no watchdogNo Backup  - 40 C+ 105 C1 %Bd48 Reel
NCP302HSN27T1G


Supervisory Circuits 2.7V Detector w/Reset Hgh
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor 0
6 to 16 Weeks Calender.png

AUD 0.2684

Multiples of: 3000

Voltage MonitorsSmd/Smt SOT - 23 - 5 TH in (TSOP - 5)2.7 V1 InputActive High, CmosNo Manual ResetNo Watchdogno watchdogBackup 10 V- 40 C+ 125 C2 %Ncp302 Reel
STM812RW16F


Supervisory Circuits 2.63V Reset 140ms
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

STMicroelectronics 0
6 to 16 Weeks Calender.png

AUD 0.2686

Multiples of: 3000

Voltage SupervisorySmd/Smt SOT - 143 - 43 v , 3.3 v , 5 V1 InputActive High, Push - PullManual ResetNo Watchdogno watchdogNo Backup280 ms5.5 V- 40 C+ 85 C Stm812 Reel
NCP303LSN38T1G


Supervisory Circuits 3.8V Detector w/Reset Low
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor 0
6 to 16 Weeks Calender.png

AUD 0.2687

Multiples of: 3000

Voltage MonitorsSmd/Smt SOT - 23 - 5 TH in (TSOP - 5)3.8 V1 InputActive Low, Open DrainNo Manual ResetNo Watchdogno watchdogBackup 10 V- 40 C+ 125 C2 %Ncp303 Reel
NCP305LSQ40T1G


Supervisory Circuits 4.0V Detector w/Reset Low
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor 0
6 to 16 Weeks Calender.png

AUD 0.2687

Multiples of: 3000

Voltage MonitorsSmd/Smt SC - 82AB - 44 V1 InputActive Low, Open DrainNo Manual ResetNo Watchdogno watchdogBackup 10 V- 40 C+ 85 C2 %Ncp305 Reel
NCP305LSQ45T1G


Supervisory Circuits 4.5V Detector w/Reset Low
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor 0
6 to 16 Weeks Calender.png

AUD 0.2687

Multiples of: 3000

Voltage MonitorsSmd/Smt SC - 82AB - 44.5 V1 InputActive Low, Open DrainNo Manual ResetNo Watchdogno watchdogBackup 10 V- 40 C+ 85 C2 %Ncp305 Reel
NCP300LSN27T1G


Supervisory Circuits 2.7V Detector w/Reset Low
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor 0
6 to 16 Weeks Calender.png

AUD 0.2687

Multiples of: 3000

Voltage MonitorsSmd/Smt SOT - 23 - 5 TH in (TSOP - 5)2.7 V1 InputActive Low, CmosNo Manual ResetNo Watchdogno watchdogBackup 10 V- 40 C+ 125 C2 %Ncp300 Reel
NCP301HSN45T1G


Supervisory Circuits 4.5V Detector w/Reset High
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor 0
6 to 16 Weeks Calender.png

AUD 0.2687

Multiples of: 3000

Voltage MonitorsSmd/Smt SOT - 23 - 5 TH in (TSOP - 5)4.5 V1 InputActive High, Open DrainNo Manual ResetNo Watchdogno watchdogBackup 10 V- 40 C+ 125 C2 %Ncp301 Reel
NCP301LSN16T1G


Supervisory Circuits 1.6V Detector w/Reset Low
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor 0
6 to 16 Weeks Calender.png

AUD 0.2687

Multiples of: 3000

Voltage MonitorsSmd/Smt SOT - 23 - 5 TH in (TSOP - 5)1.6 V1 InputActive Low, Open DrainNo Manual ResetNo Watchdogno watchdogBackup 10 V- 40 C+ 125 C2 %Ncp301 Reel
NCP302HSN18T1G


Supervisory Circuits 1.8V Detector w/Reset Hgh
Icon ROHS
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor 0
6 to 16 Weeks Calender.png

AUD 0.2687

Multiples of: 3000

Voltage MonitorsSmd/Smt SOT - 23 - 5 TH in (TSOP - 5)1.8 V1 InputActive High, CmosNo Manual ResetNo Watchdogno watchdogBackup 10 V- 40 C+ 125 C2 %Ncp302 Reel
  • NoFilter
  • Contains
  • DoesNotContain
  • StartsWith
  • EndsWith
  • EqualTo
  • NotEqualTo
  • GreaterThan
  • LessThan
  • GreaterThanOrEqualTo
  • LessThanOrEqualTo
  • Between
  • NotBetween
  • IsEmpty
  • NotIsEmpty
  • IsNull
  • NotIsNull
  • Custom

Looking for help? Visit our FAQ's Section to answer to all your questions

 

X-ON Worldwide Electronics

Welcome To X-ON ELECTRONICS
For over three decades, we have been advocating and shaping the electronic components industry. Our management complements our worldwide business scope and focus. We are committed to innovation, backed by a strong business foundation. If you need a trustworthy supplier of electronic components for your business – look no further.
 

Copyright ©2026  X-ON Electronic Services. All rights reserved.
Please ensure you have read and understood our Terms & Conditions before purchasing.
All prices exclude GST.

Image for all the cards that are accepted Image for all the cards that are accepted Image for all the cards that are accepted Image for all the cards that are accepted Image for all the cards that are accepted