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

Enable Smart Filtering (Note: Disable Smart Filtering for quicker results)

Select	Filter Name
	Manufacturer
	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

Sorting

Sort Column:

Sort Direction:

First

...

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

NCP305LSQ37T1G

Supervisory Circuits 3.7V Detector w/Reset 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.

ON Semiconductor

Availability : 2879
Ship by Fri. 14 Nov to Tue. 18 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 0.1917

Multiples of: 1

Voltage Monitors

Smd/Smt

SC - 82AB - 4

3.7 V

1 Input

No Manual Reset

no watchdog

10 V

- 40 C

+ 85 C

2 %

Ncp305

Reel

BU4813FVE-TR

Supervisory Circuits IC CMOS VOLT 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 : 2879
Ship by Fri. 14 Nov to Tue. 18 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 0.2674

Multiples of: 1

Voltage Detectors

Smd/Smt

VSOF - 5

1.3 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4813fve

Cut Tape

BU4814FVE-TR

Supervisory Circuits IC CMOS VOLT 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 : 2879
Ship by Fri. 14 Nov to Tue. 18 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 0.2674

Multiples of: 1

Voltage Detectors

Smd/Smt

VSOF - 5

1.4 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4814fve

Cut Tape

R3116N201C-TR-FE

Supervisory Circuits 0.8% Accuracy 0.5V Operating Voltage Detector with Delay Function

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 : 2879
Ship by Fri. 14 Nov to Tue. 18 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 0.321

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 5

2 V

1 Input

Cmos

No Manual Reset

no watchdog

Backup

100 ms

6 V

- 40 C

+ 85 C

0.8 %

R3116n

Cut Tape

S-80808CNNB-B9MT2G

Supervisory Circuits 1.3uA Iq

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 : 2879
Ship by Fri. 14 Nov to Tue. 18 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 0.4167

Multiples of: 1

Voltage Detectors

Smd/Smt

SC - 82AB - 4

1 Input

No Manual Reset

no watchdog

adjustable

5 V

- 40 C

+ 85 C

S - 808

Cut Tape

BU45K242G-TL

Supervisory Circuits 2.4V 200ms SSOP3 Nch Volt Detctr 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.

ROHM

Availability : 2878
Ship by Fri. 14 Nov to Tue. 18 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 0.2617

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP3 - 3

2.4 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

200 ms

6 V

- 40 C

+ 105 C

1 %

Bu45/Bu46

Cut Tape

BU4809FVE-TR

Supervisory Circuits IC CMOS VOLT 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 : 2878
Ship by Fri. 14 Nov to Tue. 18 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 0.2618

Multiples of: 1

Voltage Detectors

Smd/Smt

VSOF - 5

900 mV

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4809fve

Cut Tape

BD48E42G-MTR

Supervisor Open Drain or Open Collector 1 Channel 5-SSOP

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 : 2878
Ship by Fri. 14 Nov to Tue. 18 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 0.2861

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 5

4.2 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

100 us

10 V

- 40 C

+ 105 C

1 %

Aec - Q101

Cut Tape

BD4936FVE-TR

Supervisory Circuits CMOS DETEC VOLT 3.9V

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 : 2877
Ship by Fri. 14 Nov to Tue. 18 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 0.2178

Multiples of: 1

Voltage Monitors

Smd/Smt

VSOF - 5

3.6 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Bd49

Cut Tape

R3112N221A-TR-FE

Supervisory Circuits Low Voltage Detector w/output 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.

Nisshinbo

Availability : 2877
Ship by Fri. 14 Nov to Tue. 18 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 0.252

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 5

2.2 V

1 Input

Cmos, Open Drain

No Manual Reset

no watchdog

Backup

6 V

- 40 C

+ 85 C

2 %

R3112n

Cut Tape

RT9818B-35GB

Supervisory Circuits Micro-Power Voltage Detectors

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.

Richtek

Availability : 2877
Ship by Fri. 14 Nov to Tue. 18 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 0.1441

Multiples of: 1

Voltage Detector

SMD/SMT

SOT - 23 - 5

3.5 V

Open Drain

Manual Reset

No Watchdog

No Backup

55 ms

6 V

- 40 C

+ 85 C

1.5 %

Reel , Cut Tape

BD48E29G-MTR

Supervisor Open Drain or Open Collector 1 Channel 5-SSOP

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 : 2877
Ship by Fri. 14 Nov to Tue. 18 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 0.2861

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 5

2.9 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

100 us

10 V

- 40 C

+ 105 C

1 %

Aec - Q101

Cut Tape

S-1011E90-M6T1U4

Supervisory Circuits 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 : 2877
Ship by Fri. 14 Nov to Tue. 18 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 0.7762

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 6

9 V

1 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

10 ms

36 V

- 40 C

+ 85 C

S - 1011

Cut Tape

BU4848G-TR

Supervisory Circuits IC CMOS VOLT 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 : 2876
Ship by Fri. 14 Nov to Tue. 18 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 0.1918

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 5

4.8 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4848g

Cut Tape

MCP1320T-46GEOT

Microchip Technology Supervisory Circuits ACTIVE LO OPEN-DRAIN WDI

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 : 2876
Ship by Fri. 14 Nov to Tue. 18 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 0.7425

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

2 v to 4.7 V

1 Input

Active Low, Open Drain

Manual Reset

watchdog

No Backup

2240 ms

5.5 V

- 40 C

+ 125 C

Mcp1320

Reel

TPS3808EG25DBVRQ1

Supervisory Circuits Automotive 600nA ul tra-low quiescent cu

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 : 2876
Ship by Fri. 14 Nov to Tue. 18 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 0.913

Multiples of: 1

Voltage Supervisory

SMD/SMT

SOT - 23 - 6

2.33 V

1 Input

Open Drain

Manual Reset

No Watchdog

Backup

20 ms

6 V

- 40 C

+ 125 C

1 %

TPS3808E - Q1

Reel , Cut Tape

TPS3808EG50DBVRQ1

Supervisory Circuits Automotive 600nA ul tra-low quiescent cu

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 : 2876
Ship by Fri. 14 Nov to Tue. 18 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 0.9561

Multiples of: 1

Voltage Supervisory

SMD/SMT

SOT - 23 - 6

4.65 V

1 Input

Open Drain

Manual Reset

No Watchdog

Backup

20 ms

6 V

- 40 C

+ 125 C

1 %

TPS3808E - Q1

Reel , Cut Tape

APX810S-26SR-7

Supervisory Circuits 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 : 2875
Ship by Fri. 14 Nov to Tue. 18 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 0.1034

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 3

2.63 V

1 Input

Active High, Push - Pull

No Manual Reset

no watchdog

No Backup

240 ms

5.5 V

- 40 C

+ 125 C

Apx809s/810S

Cut Tape

BD53E34G-MTR

Supervisory Circuits VOLTAGE DETECTOR WADJ 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 : 2875
Ship by Fri. 14 Nov to Tue. 18 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 0.2904

Multiples of: 1

Voltage Detectors

SMD/SMT

SSOP - 5

3.4 V

1 Input

CMOS

No Manual Reset

No Watchdog

No Backup

Programmable

10 V

- 40 C

+ 105 C

1 %

BD53ExxG - M

AEC - Q101

Reel , Cut Tape

S-80930CNNB-G80T2G

Supervisory Circuits Voltage Detector with External Delay, 1.1uA SC-82AB

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 : 2875
Ship by Fri. 14 Nov to Tue. 18 Nov

November 2025