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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	Type
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	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

BD4837G-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 : 2803
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 0.1438

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

3.7 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Bd48

Reel

BD5246G-2MTR

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 : 2803
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 0.2012

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 5

4.6 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

55.5 ms

7 V

- 40 C

+ 105 C

2 %

Aec - Q101

Cut Tape

STM6777TWWB6F

Supervisory Circuits Dual triple ultra Lo Vltg supervisor

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

Availability : 2803
Ship by Wed. 03 Dec to Mon. 08 Dec

December 2025

December 2025
	S	M	T	W	T	F	S
49	30	1	2	3	4	5	6
50	7	8	9	10	11	12	13
51	14	15	16	17	18	19	20
52	21	22	23	24	25	26	27
53	28	29	30	31	1	2	3
2	4	5	6	7	8	9	10

USD 0.3514

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 6

0.8 v to 5.5 V

2 Input

Active Low, Open Drain

Manual Reset

No Watchdog

No Backup

280 ms

5.5 V

- 40 C

+ 85 C

Stm6777

Reel

NCV303LSN12T1G

Supervisory Circuits AUTO 1.2V 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.

ON Semiconductor

Availability : 2803
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 0.3622

Multiples of: 1

Voltage Detectors

Smd/Smt

TSOP - 5

1.2 V

1 Input

No Manual Reset

no watchdog

10 V

- 40 C

+ 125 C

2 %

Ncv303

Aec - Q100

Cut Tape

STBP110CVDJ6F

Supervisory Circuits 28V Overvoltage Prot N-Ch 170mOhm 1.2A

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

Availability : 2803
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 0.4034

Multiples of: 1

Voltage Supervisory

Smd/Smt

TDFN - 8

1 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

8 ms

28 V

+ 85 C

Stbp110

Reel

BU4817FVE-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 : 2802
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 0.2674

Multiples of: 1

Voltage Detectors

Smd/Smt

VSOF - 5

1.7 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4817fve

Cut Tape

BD46295G-TR

Supervisory Circuits RESET DETEC VOLT 3.0V

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.

ROHM

Availability : 2802
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 0.3619

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

3 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Bd46

Reel

R3152N002A-TR-KE

Supervisory Circuits 42 V INPUT 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 : 2801
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 1.5159

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 6

3.54 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

4 ms

42 V

- 40 C

+ 125 C

R3152n

Cut Tape

BU4842F-TR

Supervisor Open Drain or Open Collector 1 Channel 4-SOP

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 : 2800
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 0.3904

Multiples of: 1

Voltage Detectors

Smd/Smt

SOP - 4

4.2 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4842f

Reel

BD53E28G-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 : 2799
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 0.2911

Multiples of: 1

Voltage Detectors

SMD/SMT

SSOP - 5

2.8 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

BD48L54G-TL

Supervisory Circuits Volt Det Open drain 5.4V SSOP3

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 : 2798
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 0.1177

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 3

5.4 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Cut Tape

BD5256FVE-TR

Supervisory Circuits CMOS DETEC VOLT 5.6V

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 : 2798
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 0.2426

Multiples of: 1

Voltage Detectors

Smd/Smt

VSOF - 5

5.6 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

10 V

- 40 C

+ 105 C

1 %

Bd52

Cut Tape

MAX809M-HXY

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.

HXY MOS

Availability : 2793
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 0.0311

Multiples of: 10

BU4929G-TR

Supervisory Circuits Low Volt CMOS Detector; 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 : 2793
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 0.1438

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 5

2.9 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4929g

Cut Tape

Hot

BD4732G-TR

Supervisory Circuits RESET DETEC VOLT 3.2V

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 : 2793
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 0.1695

Multiples of: 5

Voltage Monitors

Smd/Smt

SOT - 23 - 5

3.2 V

1 Input

Open Collectors

No Manual Reset

No Watchdog

no watchdog

No Backup

0.85 V

- 40 C

+ 75 C

1 %

Bd47

Reel

TPS3840DL18DBVRQ1

Supervisory Circuits Automotive 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 : 2793
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 0.5392

Multiples of: 1

Voltage Supervisory

SMD/SMT

SOT - 23 - 5

1.8 V

1 Input

Active Low, Open Drain

Manual Reset

No Watchdog

No Backup

619 ms

10 V

- 40 C

+ 125 C

1 %

Reel , Cut Tape

BU4209F-TR

Supervisory Circuits LOW VOLT DETECT VOLT 1.1V

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 : 2792
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 0.2519

Multiples of: 1

Voltage Monitors

Smd/Smt

SOP - 4

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

R3112N311A-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 : 2792
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

Voltage Detectors

Smd/Smt

SOT - 23 - 5

3.1 V

1 Input

Cmos, Open Drain

No Manual Reset

no watchdog

Backup

6 V

- 40 C

+ 85 C

2 %

R3112n

Cut Tape

BD45E251G-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 : 2792
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 0.3362

Multiples of: 1

Voltage Detectors

SMD/SMT

SSOP - 5

2.5 V

1 Input

Open Drain

Manual Reset

No Watchdog

No Backup

100 ms

10 V

- 40 C

+ 105 C

1 %

BD45ExxxG - M

AEC - Q101

Reel , Cut Tape

MCP810T-475I/TT

Supervisor Push-Pull, Totem Pole 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 : 2791
Ship by Mon. 17 Nov to Wed. 19 Nov

November 2025