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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	Number of Inputs Monitored
	Output Type
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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

APX810S-23SA-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 : 2787
Ship by Mon. 17 Nov to Wed. 19 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 0.1042

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 3

2.25 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

BD52E34G-TR

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.

ROHM

Availability : 2787
Ship by Mon. 17 Nov to Wed. 19 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 0.192

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 5

3.4 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

adjustable

10 V

- 40 C

+ 105 C

1 %

Bd52(53)Exxg

Cut Tape

BU4841FVE-TR

ROHM Semiconductor 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 : 2786
Ship by Mon. 17 Nov to Wed. 19 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 0.2466

Multiples of: 1

Voltage Detectors

Smd/Smt

VSOF - 5

4.1 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4841fve

Reel

BU4232G-TR

Supervisory Circuits CMOS LOW VOLT DETEC

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 : 2784
Ship by Mon. 17 Nov to Wed. 19 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 0.211

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

3.2 V

Bu42

Cut Tape

TPS3106K33DBVR

Supervisory Circuits Current/Supply-Volt Supervisory

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 : 2784
Ship by Wed. 19 Nov to Tue. 25 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 0.4317

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 6

2.941 V

2 Input

Active - Low,Open - Drain

Manual Reset

no watchdog

No Backup

130 ms

3.3 V

- 40 C

+ 85 C

0.75 %

Tps3106k33

Cut Tape

RT9819D-29PV

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 : 2783
Ship by Mon. 17 Nov to Wed. 19 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 0.1375

Multiples of: 1

Voltage Detector

SMD/SMT

SOT - 23 - 3

2.9 V

Push - Pull

Manual Reset

No Watchdog

No Backup

450 ms

6 V

- 40 C

+ 85 C

1.5 %

Reel , Cut Tape

BU4209G-TR

Supervisory Circuits CMOS LOW VOLT DETEC

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 : 2783
Ship by Wed. 19 Nov to Tue. 25 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 0.1411

Multiples of: 5

Voltage Monitors

Smd/Smt

SSOP - 5

0.9 V

1 Input

Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

7 V

- 40 C

+ 125 C

1 %

Bu42

Reel

BD45481G-TR

ROHM Semiconductor Supervisory Circuits RESET DETEC VOLT 2.3V

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 : 2783
Ship by Mon. 17 Nov to Wed. 19 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 0.3058

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

2.3 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Bd45

Reel

BU4214FVE-TR

Supervisory Circuits LOW VOLT DETECT VOLT 1.6V

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 : 2782
Ship by Wed. 19 Nov to Tue. 25 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 0.1915

Multiples of: 1

Voltage Monitors

Smd/Smt

HVSOF - 5

1.4 V

1 Input

Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

7 V

- 40 C

+ 125 C

1 %

Bu42

Reel

R3111N421C-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 : 2782
Ship by Mon. 17 Nov to Wed. 19 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

Smd/Smt

SOT - 23 - 5

4.2 V

1 Input

Active Low, Cmos

No Manual Reset

no watchdog

No Backup

+ 85 C

R3111n

Reel

BU4941FVE-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 : 2782
Ship by Mon. 17 Nov to Wed. 19 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 0.2866

Multiples of: 1

Voltage Detectors

Smd/Smt

VSOF - 5

4.1 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4941fve

Cut Tape

BU4246G-TR

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 : 2782
Ship by Mon. 17 Nov to Wed. 19 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 0.3289

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

4.6 V

1 Input

Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

7 V

- 40 C

+ 125 C

1 %

Bu42

Reel

BU4227F-TR

Supervisory Circuits LOW VOLT DETECT VOLT 2.9V

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 : 2781
Ship by Mon. 17 Nov to Wed. 19 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 0.2541

Multiples of: 1

Voltage Monitors

Smd/Smt

SOP - 4

2.7 V

1 Input

Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

7 V

- 40 C

+ 125 C

1 %

Bu42

Reel

BD4719G-TR

Supervisory Circuits RESET DETEC VOLT 1.9V

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 : 2780
Ship by Mon. 17 Nov to Wed. 19 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 0.2687

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 5

1.9 V

1 Input

Open Collectors

No Manual Reset

No Watchdog

no watchdog

No Backup

0.85 V

- 40 C

+ 75 C

1 %

Bd47

Reel

BU4911FVE-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 : 2780
Ship by Mon. 17 Nov to Wed. 19 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 0.2866

Multiples of: 1

Voltage Detectors

Smd/Smt

VSOF - 5

1.1 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4911fve

Cut Tape

BD70H31G-CTR

Supervisory Circuits AECQ

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 : 2780
Ship by Mon. 17 Nov to Wed. 19 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 0.378

Multiples of: 1

Voltage Supervisory

SMD/SMT

SSOP - 5

3.06 V

1 Input

Active High, Open Drain

No Manual Reset

No Watchdog

No Backup

40 us , 50 us

6 V

- 40 C

+ 125 C

Reel , Cut Tape

BU4914G-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 : 2779
Ship by Mon. 17 Nov to Wed. 19 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

1.4 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4914g

Cut Tape

TPS3828-33DBVTG4

Supervisory Circuits Processor Sprvisry Circuits

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 : 2779
Ship by Mon. 17 Nov to Wed. 19 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 0.8195

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

2.93 V

1 Input

Open Collector / Drain

Manual Reset

Watchdog

watchdog

No Backup

200 ms

5.5 V

- 40 C

+ 85 C

Tps3828 - 33

Reel

TPS36CA66BECDDFRQ1

Supervisory Circuits Automotive nano-qui escent-current prec

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 : 2779
Ship by Mon. 17 Nov to Wed. 19 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 1.8647

Multiples of: 1

Voltage Supervisory

SMD/SMT

TSOT - 8

1.05 V to 5.4 V

1 Input

Active Low, Open Drain, Push - Pull

Manual Reset

Watchdog

No Backup

6 V

- 40 C

+ 125 C

1.2 %

TPS36 - Q1

Reel , Cut Tape

BU45K264G-TL

Supervisory Circuits Volt Det IC 2.6V 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.

ROHM

Availability : 2777
Ship by Mon. 17 Nov to Wed. 19 Nov

November 2025