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

BD4855G-TR

Supervisory Circuits CMOS DETEC VOLT 5.5V

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 : 2691
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 0.2563

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

5.5 V

1 Input

Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

10 V

- 40 C

+ 105 C

1 %

Bd48

Reel

BD49L37G-TL

Supervisory Circuits Volt Det CMOS 3.7V 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 : 2690
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 0.1023

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 3

3.7 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Cut Tape

STM6519APAAUB6F

Supervisory Circuits Smart Reset 4-Pin 2V to 5.5V 1uA 0.5s

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 : 2687
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 0.3395

Multiples of: 1

Voltage Supervisory

Smd/Smt

UDFN - 6

Active Low, Open Drain

Manual Reset

No Watchdog

No Backup

7.5 s

5.5 V

- 40 C

+ 85 C

Stm6519

Reel

BU4948G-TR

Volt Supervisor Detect 0.9V to 4.8V 5-Pin SSOP 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.

ROHM

Availability : 2686
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 0.1378

Multiples of: 1

Bu4948g

Reel

NCV303LSN43T1G

Supervisory Circuits AUTO 4.3V SUPERVSRY

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 : 2686
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

Ncv303

Aec - Q100

Cut Tape

BU4848F-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 : 2683
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 0.2547

Multiples of: 1

Voltage Detectors

Smd/Smt

SOP - 4

4.8 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4848f

Reel

APX803S00-31SR-7

Supervisory Circuits 3.08V 1.7ms 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 : 2681
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 0.1034

Multiples of: 1

Cut Tape

BU45K332G-TL

Supervisory Circuits 3.3V 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 : 2678
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 0.2512

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP3 - 3

3.3 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

R3118N451C-TR-FE

Supervisory Circuits Low Voltage Detector w/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 : 2674
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 0.3889

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 5

4.5 V

1 Input

Cmos

No Manual Reset

no watchdog

Backup

80 us

6 V

- 40 C

+ 85 C

1.5 %

R3118n

Cut Tape

APX824-40W5G-7

Supervisor Push-Pull, Totem Pole 1 Channel SOT-25

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 : 2672
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 0.1551

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 25 - 5

4 V

1 Input

Active High, Active Low

No Manual Reset

watchdog

No Backup

280 ms

5.5 V

- 40 C

+ 85 C

Apx824

Reel

BD53E45G-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 : 2671
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 0.2144

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 5

4.5 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

adjustable

10 V

- 40 C

+ 105 C

1 %

Bd52(53)Exxg

Cut Tape

BU4932F-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 : 2669
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 0.2559

Multiples of: 1

Voltage Detectors

Smd/Smt

SOP - 4

3.2 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4932f

Cut Tape

R3119N058A-TR-FE

Supervisory Circuits 36V input Voltage Detector with 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 : 2668
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 0.6263

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 5

5.8 V

1 Input

Cmos, Open Drain

No Manual Reset

no watchdog

No Backup

85 ms

36 V

- 40 C

+ 105 C

1.5 %

R3119n

Reel

MIC2774N-17YM5-TR

Supervisory Circuits Dual Voltage Supervisor with 0.3V and 1.69V Thresholds, Active-Low Open-Drain Ou

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 : 2668
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 0.9618

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23

Reel

BD5335FVE-TR

Supervisory Circuits CMOS DETEC VOLT 3.5V

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 : 2667
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

VSOF - 5

3.5 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

10 V

- 40 C

+ 105 C

1 %

Bd53

Reel

BU4238F-TR

ROHM Semiconductor Supervisory Circuits LOW VOLT DETECT VOLT 4.0V

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 : 2667
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 0.2664

Multiples of: 1

Voltage Monitors

Smd/Smt

SOP - 4

3.8 V

Bu42

Reel

BD4849G-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 : 2667
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 0.2718

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

4.9 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Bd48

Reel

BD5326FVE-TR

Supervisory Circuits CMOS DETEC VOLT 2.6V

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 : 2666
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 0.25

Multiples of: 1

Voltage Detectors

Smd/Smt

VSOF - 5

2.6 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

10 V

- 40 C

+ 105 C

1 %

Bd53

Cut Tape

MAX810M

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.

TECH PUBLIC

Availability : 2662
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 0.0428

Multiples of: 5

APX809-46SRG-7

Supervisory Circuits 1V-5.5V 4.63V 20mA

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 : 2662
Ship by Mon. 17 Nov to Wed. 19 Nov

November 2025