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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	Number of Inputs Monitored
	Output Type
	Manual Reset
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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

STM6719SFWB6F

Supervisory Circuits Triple Ultra-Lo Volt Open Drain reset

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 : 206610
Ship by Thu. 24 Apr to Wed. 30 Apr

April 2025

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

USD 0.8341

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 6

0.8 v to 5.5 V

3 Input

Active Low, Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

280 ms

5.5 V

- 40 C

+ 85 C

Stm6719

Reel

NCP305LSQ25T1G

Supervisory Circuits 2.5V 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 : 199058
Ship by Thu. 24 Apr to Wed. 30 Apr

April 2025

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

USD 0.3767

Multiples of: 1

Voltage Monitors

Smd/Smt

SC - 82AB - 4

2.5 V

1 Input

Active Low, Open Drain

No Manual Reset

No Watchdog

no watchdog

Backup

10 V

- 40 C

+ 85 C

2 %

Ncp305

Reel

NCV302HSN45T1G

Supervisory Circuits ANA UNDERVOLT 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.

ON Semiconductor

Availability : 165850
Ship by Thu. 24 Apr to Wed. 30 Apr

April 2025

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

USD 0.5633

Multiples of: 1

APX809S-26SA-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 : 128770
Ship by Tue. 22 Apr to Thu. 24 Apr

April 2025

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

USD 0.0935

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 3

2.63 V

1 Input

Active Low, Push - Pull

No Manual Reset

no watchdog

No Backup

240 ms

5.5 V

- 40 C

+ 125 C

Apx809s/810S

Cut Tape

ASM811REUSF-T

Supply Voltage Supervisory 1.1V to 5.5V Automotive 4-Pin(3+Tab) SOT-143 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.

ON Semiconductor

Availability : 120552
Ship by Thu. 24 Apr to Wed. 30 Apr

April 2025

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

USD 0.3714

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 143 - 3

Asm811reusf - T

Reel

NCP300LSN185T1G

Supervisory Circuits 1.85V 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 : 113490
Ship by Thu. 24 Apr to Wed. 30 Apr

April 2025

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

USD 0.5084

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 5 TH in (TSOP - 5)

1.85 V

1 Input

Active Low, Cmos

No Manual Reset

No Watchdog

no watchdog

Backup

10 V

- 40 C

+ 125 C

2 %

Ncp300

Reel

STM1061N27WX6F

Supervisory Circuits 2.7V Active Lo Open Drain 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.

STMicroelectronics

Availability : 104760
Ship by Thu. 24 Apr to Wed. 30 Apr

April 2025

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

USD 0.1341

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

2.7 V

1 Input

Active Low, Open Drain

No Manual Reset

No Watchdog

No Backup

6 V

- 40 C

+ 85 C

Stm1061

Reel

CAT809STBI-GT3

Supervisory Circuits Push-pull Act 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 : 100117
Ship by Tue. 22 Apr to Thu. 24 Apr

April 2025

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

USD 0.2046

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 watchdog

No Backup

240 ms

5.5 V

- 40 C

+ 85 C

Cat809

Reel

BD52E30G-MTR

Supervisory Circuits VOLTAGE DETECTOR W/ADJ 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 : 96783
Ship by Tue. 22 Apr to Thu. 24 Apr

April 2025

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

USD 0.3228

Multiples of: 1

Voltage Detectors

SMD/SMT

SSOP - 5

3 V

1 Input

Open Drain

No Manual Reset

No Watchdog

No Backup

Programmable

10 V

- 40 C

+ 105 C

1 %

BD52ExxG - M

AEC - Q101

Reel , Cut Tape

MAX810SQ463T1G

ON Semiconductor Supervisory Circuits ANA 4.63V MC RESET

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 : 88614
Ship by Thu. 24 Apr to Wed. 30 Apr

April 2025

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

USD 0.3858

Multiples of: 1

Voltage Supervisory

Smd/Smt

SC - 70 - 3

1.2 v to 4.9 V

1 Input

Push - Pull

No Manual Reset

no watchdog

No Backup

460 ms

5.5 V

- 40 C

+ 105 C

Max810

Reel

APX823-44W5G-7

Supervisory Circuits 1.1V-5.5V 4.38V 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 : 83083
Ship by Tue. 22 Apr to Thu. 24 Apr

April 2025

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

USD 0.1397

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 25 - 5

4.38 V

1 Input

Active Low

Manual Reset

Watchdog

watchdog

No Backup

280 ms

5.5 V

- 40 C

+ 85 C

Apx823

Reel

NCP304LSQ20T1G

ON Semiconductor Supervisory Circuits 2.0V Detector wReset 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 : 81480
Ship by Thu. 24 Apr to Wed. 30 Apr

April 2025

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

USD 0.3895

Multiples of: 1

Voltage Monitors

Smd/Smt

SC - 82AB - 4

2 V

1 Input

Active Low, Cmos

No Manual Reset

no watchdog

Backup

10 V

- 40 C

+ 85 C

2 %

Ncp304

Reel

APX809S-46SA-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 : 80342
Ship by Tue. 22 Apr to Thu. 24 Apr

April 2025

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

USD 0.0935

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 3

4.63 V

1 Input

Active Low, Push - Pull

No Manual Reset

no watchdog

No Backup

240 ms

5.5 V

- 40 C

+ 125 C

Apx809s/810S

Cut Tape

MCP120T-315I/TT

Supervisor Integrated Circuit; power on reset monitor (PoR)

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 : 75660
Ship by Thu. 24 Apr to Wed. 30 Apr

April 2025

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

USD 0.2795

Multiples of: 3000

MAX809L

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 : 70317
Ship by Thu. 08 May to Tue. 13 May

May 2025

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

USD 0.0418

Multiples of: 5

R3112N291A-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 : 66505
Ship by Tue. 22 Apr to Thu. 24 Apr

April 2025

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

USD 0.244

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 5

2.9 V

1 Input

Cmos, Open Drain

No Manual Reset

no watchdog

Backup

6 V

- 40 C

+ 85 C

2 %

R3112n

Reel

TS831-5IDT

Supervisor Integrated Circuit; power on reset monitor (PoR)

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 : 60625
Ship by Thu. 24 Apr to Wed. 30 Apr

April 2025

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

USD 0.2157

Multiples of: 2500

STM6779LWB6F

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 : 58200
Ship by Thu. 24 Apr to Wed. 30 Apr

April 2025

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

USD 0.7859

Multiples of: 3000

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 watchdog

No Backup

280 ms

5.5 V

- 40 C

+ 85 C

Stm6779

Reel

NCV809RTRG

Processor Supervisor 2.63V 1.2V to 4.9V 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.

ON Semiconductor

Availability : 55390
Ship by Thu. 24 Apr to Wed. 30 Apr

April 2025

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

USD 0.5123

Multiples of: 1

Voltage Supervisory

Ncv809

Aec - Q100

Reel

NCV301LSN30T1G

Supervisory Circuits VOLTAGE DETECTOR 3.0V AUT

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 : 55290
Ship by Thu. 24 Apr to Wed. 30 Apr

April 2025