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

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 Tue. 22 Jul to Mon. 28 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
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28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.2336

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

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 : 126069
Ship by Fri. 18 Jul to Tue. 22 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

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 : 119859
Ship by Tue. 22 Jul to Mon. 28 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.2304

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 143 - 3

Asm811reusf - T

Reel

TC54VN2702ECB713

Supervisor - 700 mV to 10 Vsupp. - 2.7 V threshold/200 µs delay - Active-Low - Open-Drain - SOT-23A-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 : 116400
Ship by Tue. 22 Jul to Mon. 28 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.3313

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23A - 3

1.1 v to 6 V

1 Input

Cmos, Open Drain

No Manual Reset

No Watchdog

no watchdog

Backup

0.2 ms

10 V

- 40 C

+ 85 C

Tc54

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 Tue. 22 Jul to Mon. 28 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.3049

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

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 : 99962
Ship by Fri. 18 Jul to Tue. 22 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.2035

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 Fri. 18 Jul to Tue. 22 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.3334

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

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 : 96030
Ship by Tue. 22 Jul to Mon. 28 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.1848

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

TPS3823-33DBVR

Supervisory Circuits 2.93V Monitor

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 : 95103
Ship by Tue. 05 Aug to Fri. 08 Aug

August 2025

August 2025
	S	M	T	W	T	F	S
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9
33	10	11	12	13	14	15	16
34	17	18	19	20	21	22	23
35	24	25	26	27	28	29	30
36	31	1	2	3	4	5	6

USD 0.1087

Multiples of: 5

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

2.93 V

1 Input

Push - Pull

Manual Reset

Watchdog

watchdog

No Backup

200 ms

5.5 V

- 40 C

+ 85 C

Tps3823 - 33

Reel

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 Tue. 22 Jul to Mon. 28 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.2393

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 : 83080
Ship by Fri. 18 Jul to Tue. 22 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

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 Tue. 22 Jul to Mon. 28 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.2336

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

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 Tue. 05 Aug to Fri. 08 Aug

August 2025

August 2025
	S	M	T	W	T	F	S
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9
33	10	11	12	13	14	15	16
34	17	18	19	20	21	22	23
35	24	25	26	27	28	29	30
36	31	1	2	3	4	5	6

USD 0.0432

Multiples of: 5

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 : 68473
Ship by Fri. 18 Jul to Tue. 22 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

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

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 Fri. 18 Jul to Tue. 22 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.252

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

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 Tue. 22 Jul to Mon. 28 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.3073

Multiples of: 1

Voltage Supervisory

Ncv809

Aec - Q100

Reel

APX803S-29SA-7

Supervisory Circuits 2.93V, 240ms 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 : 49549
Ship by Fri. 18 Jul to Tue. 22 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.1034

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 3

2.93 V

1 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

240 ms

5.5 V

- 40 C

+ 85 C

Apx803s

Cut Tape

STM6519ALARUB6F

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

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 : 49470
Ship by Tue. 22 Jul to Mon. 28 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.8786

Multiples of: 3000

Voltage Supervisory

Smd/Smt

UDFN - 6L

Active Low, Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

6 s

5.5 V

- 40 C

+ 85 C

Stm6519

Reel

STM6601AQ2BDM6F

Supervisory Circuits Smart Push-Button CTRL w/Smart 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 : 43650
Ship by Tue. 22 Jul to Mon. 28 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.9934

Multiples of: 3000

Voltage Supervisory

Smd/Smt

TDFN - 12

3.3 V

1 Input

Open Collector / Drain

Manual Reset

No Watchdog

no watchdog

No Backup

5.5 V

- 40 C

+ 85 C

Stm6601

Reel

MIC811TUY TR

Supervisory Circuits Microprocessor Reset Circuit with Manual Reset, Push-Pull Active-Low Output, 3.08V Threshold, 140ms reset pulse in SOT143-4 - Lead Free

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 : 41905
Ship by Fri. 18 Jul to Tue. 22 Jul

July 2025

July 2025
	S	M	T	W	T	F	S
27	29	30	1	2	3	4	5
28	6	7	8	9	10	11	12
29	13	14	15	16	17	18	19
30	20	21	22	23	24	25	26
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9

USD 0.4455

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 143 - 4

3.08 V

1 Input

Active Low

Manual Reset

No Watchdog

No Backup

240 ms

5.5 V

- 40 C

+ 85 C

Mic811

Reel

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Supervisory Circuits

Supervisory Circuits

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