About Supervisory Circuits

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.

Supervisory Circuits

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Image	Stock Code(▲▼)	Description	Manufacturer	Global Stock ⓘ (▲▼)	Price(USD) (Ex. GST)(▲▼)	Enter Qty	Type	Mounting Style	Output Voltage	Package / Case	Threshold Voltage	Number of Inputs Monitored	Output Type	Manual Reset	Watchdog	Watchdog Timers	Battery Backup Switching	Reset Delay Time	Supply Voltage - Max	Minimum Operating Temperature	Maximum Operating Temperature	Accuracy	Series	Qualification	Packaging

Hot

MCP111T-240E/TT

Supervisor Open Drain or Open Collector 1 Channel SOT-23-3

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.

Microchip

Availability : 4835
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
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32	3	4	5	6	7	8	9

USD 0.2904

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

2.32 V

1 Input

No Manual Reset

No Watchdog

5.5 V

- 40 C

+ 125 C

Reel

S-1009N30I-I4T1U

Supervisory Circuits Ultra Low Iq Voltage Detector

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.

ABLIC

Availability : 4830
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
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32	3	4	5	6	7	8	9

USD 0.4653

Multiples of: 1

Voltage Detectors

SNT - 4A - 4

S - 1009

Cut Tape

SP706TEN-LTR

Microprocessor & Microcontroller Supervisors SOIC-8_150mil 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.

MaxLinear

Availability : 4825
Ship by Mon. 21 Jul to Thu. 24 Jul

July 2025

July 2025
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32	3	4	5	6	7	8	9

USD 0.2388

Multiples of: 5

Voltage Supervisory

Smd/Smt

SOIC - 8 Narrow

3.08 V

1 Input

Active Low

Manual Reset

watchdog

No Backup

200 ms

5.5 V

- 40 C

+ 85 C

Sp706

Reel

S-1003NA30I-I6T1U

Supervisory Circuits Manual Reset, Delay Voltage Detector

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.

Ablic

Availability : 4811
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
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32	3	4	5	6	7	8	9

USD 0.4797

Multiples of: 1

Voltage Detectors

SNT - 6A - 6

S - 1003

Cut Tape

MCP1316MT-20LI/OT

Microchip Technology Active low Open-Drain with Internal 4.7k Pull-up, WDI, MR (WDI = 1600ms, reset delay = 200ms, Vtrpd - 2.0V)

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.

Microchip

Availability : 4809
Ship by Mon. 07 Jul to Fri. 11 Jul

July 2025

July 2025
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32	3	4	5	6	7	8	9

USD 0.1956

Multiples of: 1

Mcp1316

Cut Tape

MAX809TDBZRG

SOT-23-3 Monitors & Reset Circuits 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.

HANSCHIP

Availability : 4801
Ship by Mon. 21 Jul to Thu. 24 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
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32	3	4	5	6	7	8	9

USD 0.0208

Multiples of: 20

MIC803-46D3VM3-TR

Supervisory Circuits 3-Pin Microprocessor Supervisor Circuit w/ Open-Drain Reset Output

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.

Microchip

Availability : 4801
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
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32	3	4	5	6	7	8	9

USD 0.33

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

1 Input

Open Collector / Drain

Manual Reset

No Watchdog

no watchdog

No Backup

15 us

5.5 V

- 40 C

+ 125 C

Mic803

Reel

S-1009N28I-I4T1U

Supervisory Circuits Ultra Low Iq Voltage Detector

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.

Ablic

Availability : 4801
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
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32	3	4	5	6	7	8	9

USD 0.5004

Multiples of: 1

Voltage Detectors

SNT - 4A - 4

S - 1009

Cut Tape

MIC6315-46D3UY-TR

Supervisory Circuits Reset Generator, Active Low, 4.63V VTH, Manual Reset

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.

Microchip

Availability : 4798
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
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32	3	4	5	6	7	8	9

USD 0.4562

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 143 - 4

Reel

BD5227G-1TR

Supervisory Circuits 2.7V ADJ DELAY VOLTAGE DETECT

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

Availability : 4797
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
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32	3	4	5	6	7	8	9

USD 0.1271

Multiples of: 1

Voltage Detector

SMD/SMT

SSOP - 5

2.7 V

1 Input

Open Drain

No Manual Reset

No Watchdog

No Backup

7 V

- 40 C

+ 85 C

0.9 %

Reel , Cut Tape

BD45E232G-MTR

Supervisory Circuits VOLT DETECTOR WITH FIXED DELAY

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

Availability : 4797
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
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32	3	4	5	6	7	8	9

USD 0.3362

Multiples of: 1

Voltage Detectors

SMD/SMT

SSOP - 5

2.3 V

1 Input

Open Drain

Manual Reset

No Watchdog

No Backup

200 ms

10 V

- 40 C

+ 105 C

1 %

BD45ExxxG - M

AEC - Q101

Reel , Cut Tape

R3118K251C-TR

Supervisory Circuits Low Voltage Detector with SENSE pin and output delay (output capacitor type)

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.

Nisshinbo

Availability : 4790
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
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31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.378

Multiples of: 1

Voltage Detectors

Smd/Smt

DFN - PLP - 1212 - 6

2.5 V

1 Input

Cmos

No Manual Reset

no watchdog

Backup

100 ms

6 V

- 40 C

+ 85 C

1.5 %

R3118k

Cut Tape

TPS3840DL20DBVR

Supervisory Circuits Nanopower high-input voltage supervisor with manual reset and programmable-reset time delay 5-SOT-23 -40 to 125

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.

Texas Instruments

Availability : 4786
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
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32	3	4	5	6	7	8	9

USD 0.3212

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23

2 V

2 Input

Active Low, Open Drain

Manual Reset

no watchdog

Backup

6.2 s

10 V

- 40 C

+ 125 C

1 %

Tps3840

Cut Tape

MCP121T-315E/LB

Microchip Technology Supervisory Circuits Open Drain Low

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.

Microchip

Availability : 4785
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
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30	20	21	22	23	24	25	26
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32	3	4	5	6	7	8	9

USD 0.5755

Multiples of: 1

Voltage Supervisory

Smd/Smt

SC - 70 - 3

3.08 V

1 Input

No Manual Reset

no watchdog

5.5 V

- 40 C

+ 125 C

Mcp121

Reel

S-8474AC-I8T1U

Supervisory Circuits Wireless Power Transmitter Control IC

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.

ABLIC

Availability : 4778
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
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32	3	4	5	6	7	8	9

USD 1.8291

Multiples of: 1

Voltage Detector

SMD/SMT

SNT - 8A

1 Input

No Manual Reset

No Watchdog

No Backup

- 40 C

+ 85 C

S - 8474

Reel , Cut Tape

BL8506-40CRM

SOT-23 Monitors & Reset Circuits 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.

Belling

Availability : 4772
Ship by Mon. 21 Jul to Thu. 24 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
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30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.1249

Multiples of: 5

TL7705AIDRG4

Supervisory Circuits Sngl SVS f/5V System w/Prg Time Delay

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.

Texas Instruments

Availability : 4765
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
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30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 1.84

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOIC - 8

4.55 V

1 Input

Active High, Active Low, Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

programmable

18 V

- 40 C

+ 85 C

Tl7705a

Reel

MP6400DG-01-LF-Z

Supervisory Circuits Low Quiescent Delay Supv Circuit

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.

Monolithic Power Systems

Availability : 4733
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.7263

Multiples of: 1

Voltage Supervisory

Smd/Smt

QFN - 6

Adj

1 Input

Open Collector / Drain

Manual Reset

No Watchdog

no watchdog

No Backup

380 ms

6 V

+ 85 C

Mp6400dg

Reel

BD5320NVX-2CTL

Supervisory Circuits Nano Energy, 2.0V, Adjustable Delay Voltage Detector for Automotive

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

Availability : 4727
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
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30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.2458

Multiples of: 1

Voltage Detector

SMD/SMT

SSON - 4

2 V

1 Input

CMOS

No Manual Reset

No Watchdog

No Backup

7 V

- 40 C

+ 125 C

2.5 %

Reel , Cut Tape

APX803L40-40SA-7

Supervisory Circuits 4.0V 450ms Reset Generator

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.

Diodes Incorporated

Availability : 0
Request Quote

USD 0.0966

Multiples of: 1