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

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 Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

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

MAX809SEUR+T

Supervisor Integrated Circuit; power on reset monitor (PoR)

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.

Analog Devices

Availability : 4743
Ship by Thu. 30 Oct to Wed. 05 Nov

November 2025

November 2025
	S	M	T	W	T	F	S
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8
46	9	10	11	12	13	14	15
47	16	17	18	19	20	21	22
48	23	24	25	26	27	28	29
49	30	1	2	3	4	5	6

USD 0.2672

Multiples of: 1

2.93 V

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 Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

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 Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

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

APX803L-30SA-7

Supervisory Circuits 3.0V 0ms 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 : 4711
Ship by Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.1034

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 3

3 V

1 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

5.5 V

- 40 C

+ 150 C

1.5 %

Apx803l

Cut Tape

HX811TDB4RG

SOT-143 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 : 4699
Ship by Thu. 30 Oct to Wed. 05 Nov

November 2025

November 2025
	S	M	T	W	T	F	S
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8
46	9	10	11	12	13	14	15
47	16	17	18	19	20	21	22
48	23	24	25	26	27	28	29
49	30	1	2	3	4	5	6

USD 0.0528

Multiples of: 5

S-80845CNMC-B86T2G

Supervisor Open Drain or Open Collector 1 Channel SOT-23-5

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 : 4685
Ship by Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.3707

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 5

4.5 V

1 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

adjustable

10 V

- 40 C

+ 85 C

2 %

S - 808

Cut Tape

R3111N561A-TR-FE

Supervisory Circuits Low 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.

Nisshinbo

Availability : 4673
Ship by Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.2423

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

5.6 V

1 Input

Cmos, Open Drain

No Manual Reset

no watchdog

Backup

10 V

- 40 C

+ 85 C

2 %

R3111n

Cut Tape

R3118K291A-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 : 4666
Ship by Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.378

Multiples of: 1

Voltage Detectors

Smd/Smt

DFN - PLP - 1212 - 6

2.9 V

1 Input

Cmos, Open Drain

No Manual Reset

no watchdog

Backup

100 ms

6 V

- 40 C

+ 85 C

1.5 %

R3118k

Cut Tape

R3119N050A-TR-FE

Supervisory Circuits 36V Input Voltage Detector with Delay Function or SENSE pin

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 : 4665
Ship by Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.5827

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 5

5 V

1 Input

Cmos, Open Drain

No Manual Reset

no watchdog

Backup

85 ms

36 V

- 40 C

+ 105 C

1.5 %

R3119n

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 : 4659
Ship by Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.1034

Multiples of: 1

Cut Tape

UCC3946N

Supervisory Circuits Mcrprcsr Supervisor w/Watchdog Timer

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 : 4656
Ship by Thu. 30 Oct to Wed. 05 Nov

November 2025

November 2025
	S	M	T	W	T	F	S
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8
46	9	10	11	12	13	14	15
47	16	17	18	19	20	21	22
48	23	24	25	26	27	28	29
49	30	1	2	3	4	5	6

USD 2.5469

Multiples of: 1

Voltage Supervisory

Through Hole

PDIP - 8

2 v to 5.5 V

1 Input

Push - Pull

No Manual Reset

Watchdog

watchdog

No Backup

adjustable

5.5 V

0 C

+ 70 C

Ucc3946

Tube

S-1009C20I-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 : 4654
Ship by Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.4653

Multiples of: 1

Voltage Detectors

SNT - 4A - 4

S - 1009

Cut Tape

TPS3808G18DBVRG4

Processor Supervisor 1.67V 0.4V to 5V 6-Pin SOT-23 T/R

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 : 4651
Ship by Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 1.1727

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 6

1.67 V

1 Input

Active Low, Open Drain

Manual Reset

no watchdog

No Backup

300 ms

6.5 V

- 40 C

+ 125 C

Tps3808g18

Reel

MCP1316MT-29KE/OT

Supervisory Circuits ACTIVE LO OPEN DRAIN W/INT 4.7K PULL UP

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 : 4619
Ship by Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.4576

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

2.9 V

1 Input

Active Low, Open Drain

Manual Reset

Watchdog

watchdog

No Backup

5.5 V

- 40 C

+ 125 C

Mcp131

Reel

BD5231FVE-TR

Supervisory Circuits CMOS DETEC VOLT 3.1V

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 : 4616
Ship by Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.2211

Multiples of: 1

Voltage Monitors

Smd/Smt

VSOF - 5

3.1 V

1 Input

Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

10 V

- 40 C

+ 105 C

1 %

Bd52

Reel

S-1003NA29I-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 : 4612
Ship by Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.5149

Multiples of: 1

Voltage Detectors

SNT - 6A - 6

S - 1003

Cut Tape

APX803S-40SA-7

Supervisory Circuits 4.0V 240ms MPU Reset 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.

Diodes Incorporated

Availability : 4604
Ship by Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.1034

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 3

4 V

1 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

240 ms

5.5 V

- 40 C

+ 85 C

Apx803s

Cut Tape

MCP130T-475I/TT

Supervisor Integrated Circuit; power on reset monitor (PoR)

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 : 4100
Ship by Tue. 28 Oct to Thu. 30 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.3872

Multiples of: 1

Hot

MCP111T-290ELB

Microchip Technology Supervisory Circuits Open Drain

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 : 3665
Ship by Tue. 28 Oct to Thu. 30 Oct

October 2025