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

MCP1319MT-47QE/OT

Supervisory Circuits Active low Open-drain with internal 4.7k pullup + Active high P-P, MR (Reset delay = 1600ms, Vtrpd - 4.7V)

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 : 2575
Ship by Thu. 20 Nov to Wed. 26 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 0.1818

Multiples of: 1

Mcp1319

Cut Tape

MIC2782FRYCS-TR

Supervisor Open Drain or Open Collector 2 Channel 6-WLCSP (0.8x1.2)

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 : 2575
Ship by Tue. 18 Nov to Thu. 20 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 0.5506

Multiples of: 1

Voltage Supervisory

Smd/Smt

WLCSP - 6

2 Input

Active Low, Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

2 s

5.5 V

- 40 C

+ 85 C

Mic2782

Reel

MCP1316T-24MI/OT

Supervisory Circuits Active low P-P, WDI, MR (WDI = 1600ms, reset delay = 200ms, Vtrpd - 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.

Microchip

Availability : 2574
Ship by Thu. 20 Nov to Wed. 26 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 0.1279

Multiples of: 1

SOT - 23 - 5

Mcp1316

Cut Tape

MCP1320T-42EE/OT

Supervisory Circuits Active low Open-drain, WDI, MR (WDI = 6.3ms, reset delay = 30ms, Vtrpd - 4.2V)

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.

Microchip

Availability : 2574
Ship by Tue. 18 Nov to Thu. 20 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 0.7875

Multiples of: 1

Mcp1320

Reel

BD4727G-TR

ROHM Semiconductor Supervisory Circuits RESET DETEC VOLT 2.7V

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 : 2573
Ship by Thu. 20 Nov to Wed. 26 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

SOT - 23 - 5

2.7 V

1 Input

Open Collectors

No Manual Reset

no watchdog

No Backup

- 40 C

+ 75 C

1 %

Bd47

Reel

BD5222G-1TR

Supervisory Circuits 2.2V ADJ DELAY VOLTAGE 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 : 2570
Ship by Tue. 18 Nov to Thu. 20 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 0.1271

Multiples of: 1

Voltage Detector

SMD/SMT

SSOP - 5

2.2 V

1 Input

Open Drain

No Manual Reset

No Watchdog

No Backup

7 V

- 40 C

+ 85 C

0.9 %

Reel , Cut Tape

BD4923FVE-TR

Supervisory Circuits CMOS 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 : 2570
Ship by Tue. 18 Nov to Thu. 20 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 0.2594

Multiples of: 1

Voltage Monitors

Smd/Smt

VSOF - 5

2.3 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Bd49

Cut Tape

BD4847G-TR

Supervisory Circuits CMOS DETEC VOLT 4.7V

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 : 2567
Ship by Tue. 18 Nov to Thu. 20 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 0.2024

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

4.7 V

1 Input

Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

10 V

- 40 C

+ 105 C

1 %

Bd48

Reel

MAX708RESA-TG

Supervisory Circuits 2.63V uP 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 : 2566
Ship by Thu. 20 Nov to Wed. 26 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 0.387

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOIC - 8

1 v to 5.5 V

1 Input

Push - Pull

Manual Reset

No Watchdog

no watchdog

No Backup

200 ms

5.5 V

- 40 C

+ 85 C

Max708

Reel

BU4915F-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 : 2559
Ship by Tue. 18 Nov to Thu. 20 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 0.2392

Multiples of: 1

Voltage Detectors

Smd/Smt

SOP - 4

1.5 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4915f

Cut Tape

BD5245G-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 : 2556
Ship by Tue. 18 Nov to Thu. 20 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 0.2047

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 5

4.5 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

MIC1815-10UY-TR

Supervisory Circuits Microprocessor Supervisor Reset with 2.88V Threshold and Push-Pull Active-Low Output and 100ms Reset Pulse in SOT23-3 (DS1815)

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 : 2556
Ship by Tue. 18 Nov to Thu. 20 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 0.4885

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23

1 Input

Active Low, Push - Pull

No Manual Reset

No Watchdog

no watchdog

No Backup

Mic1815

Reel

APX803L05-48SA-7

Supervisory Circuits 4.8V 55ms 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 : 2555
Ship by Thu. 20 Nov to Wed. 26 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 0.1009

Multiples of: 5

Cut Tape

BU4240FVE-TR

Supervisory Circuits LOW VOLT DETECT VOLT 4.2V

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 : 2555
Ship by Tue. 18 Nov to Thu. 20 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 Monitors

Smd/Smt

VSOF - 5

4 V

Bu42

Reel

R3111Q371B-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 : 2554
Ship by Tue. 18 Nov to Thu. 20 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 0.2423

Multiples of: 1

Voltage Supervisory

Smd/Smt

SC - 82AB - 4

3.7 V

1 Input

Cmos, Open Drain

No Manual Reset

no watchdog

Backup

10 V

- 40 C

+ 85 C

2 %

R3111q

Cut Tape

APX809-40SAG-7

Processor Supervisor 4V 2.5V/3V/3.3V/5V Automotive 3-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.

Diodes Incorporated

Availability : 2553
Ship by Tue. 18 Nov to Thu. 20 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 0.099

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

2.5 v , 3 v , 3.3 v , 5 v

1 Input

Active Low, Push - Pull

No Manual Reset

no watchdog

No Backup

200 ms

5.5 V

- 40 C

+ 85 C

Apx809/810

Cut Tape

MAX40203AUK+T

Diodes - General Purpose Power Switching Low Current Ideal Diode

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 : 2553
Ship by Thu. 20 Nov to Wed. 26 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 0.6779

Multiples of: 1

Smd/Smt

SOT - 23 - 5

- 40 C

Cut Tape

APX825A-40W6G-7

Supervisory Circuits 1.1V-5.5V 4V 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 : 2552
Ship by Tue. 18 Nov to Thu. 20 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 0.1738

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 26 - 6

4 V

1 Input

Active High, Active Low

Manual Reset

watchdog

No Backup

280 ms

5.5 V

- 40 C

+ 85 C

Apx825

Cut Tape

BD48E54G-TR

Supervisory Circuits SPI BUS EEPROM

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 : 2551
Ship by Tue. 18 Nov to Thu. 20 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 0.1349

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

5.4 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Reel

RT9801BGE

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 : 2549
Ship by Tue. 18 Nov to Thu. 20 Nov

November 2025