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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	Number of Inputs Monitored
	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

NCV303LSN22T1G

ON Semiconductor Supervisory Circuits VDETECTOR W PROG DLY 2.2V

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.

ON Semiconductor

Availability : 5514
Ship by Thu. 03 Jul to Mon. 07 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 0.3974

Multiples of: 1

Voltage Detectors

Ncp303

Aec - Q100

Reel

TPS389018QDSERQ1

Supervisory Circuits Automotive Low-Quiescent-Current 1% Accurate Supervisor With Programmable Delay 6-WSON -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 : 5505
Ship by Thu. 03 Jul to Mon. 07 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 0.8536

Multiples of: 1

Voltage Supervisory

Smd/Smt

WSON - 6

1.8 V

1 Input

Active Low, Open Drain

Manual Reset

no watchdog

No Backup

25 us to 30 s

5.5 V

- 40 C

+ 125 C

1 %

Tps3890 - Q1

Aec - Q100

Cut Tape

TPAX809TS3

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 : 5504
Ship by Mon. 21 Jul to Thu. 24 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 0.0457

Multiples of: 5

BD49E40G-MTR

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 : 5504
Ship by Thu. 03 Jul to Mon. 07 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 0.29

Multiples of: 1

Voltage Detectors

SMD/SMT

SSOP - 5

4 V

1 Input

CMOS

No Manual Reset

No Watchdog

No Backup

100 us

10 V

- 40 C

+ 105 C

1 %

BD49ExxG - M

AEC - Q101

Reel , Cut Tape

TPS36BA12ACADDFRQ1

Supervisory Circuits Automotive nano-qui escent-current prec

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 : 5499
Ship by Thu. 03 Jul to Mon. 07 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 1.9597

Multiples of: 1

Voltage Supervisory

SMD/SMT

SOT23 - 8

1.05 V to 5.4 V

1 Input

Open Drain

Manual Reset

Watchdog

200 ms

6 V

- 40 C

+ 125 C

1.2 %

TPS36 - Q1

Reel , Cut Tape

BD52E42G-TR

Supervisory Circuits Dual Output Fixed Output LDO Regulator

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 : 5477
Ship by Mon. 07 Jul to Fri. 11 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 0.1968

Multiples of: 3000

Voltage Detectors

Smd/Smt

SSOP - 5

4.2 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

10 V

- 40 C

+ 105 C

1 %

Reel

S-80125BNMC-JGKT2G

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.

Ablic

Availability : 5446
Ship by Mon. 07 Jul to Fri. 11 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 0.4291

Multiples of: 3000

Voltage Detectors

Smd/Smt

SOT - 23 - 5

2.5 V

1 Input

No Manual Reset

no watchdog

100 ms

10 V

- 40 C

+ 85 C

+/- 2 %

Reel

TLV809L30DBVR

Supervisory Circuits 3Pin Supply Vltg Sup

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 : 5432
Ship by Thu. 03 Jul to Mon. 07 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 0.1886

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

3.3 V

1 Input

Active Low, Push - Pull

Manual Reset

No Watchdog

no watchdog

No Backup

200 ms

6 V

- 40 C

+ 85 C

Tlv809l30

Reel

ME2808A33XG

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.

Micro One

Availability : 5429
Ship by Mon. 21 Jul to Thu. 24 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 0.0578

Multiples of: 5

TPS3839L30DBZR

Supervisory Circuits Ultra-Lo 150nA Vtg 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.

Texas Instruments

Availability : 5428
Ship by Thu. 03 Jul to Mon. 07 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 0.2134

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

2.63 V

1 Input

Active Low, Push - Pull

No Manual Reset

No Watchdog

no watchdog

No Backup

200 ms

6.5 V

- 40 C

+ 85 C

Tps3839l30

Reel

R3121N120A-TR-KE

Supervisory Circuits 36V Input Volt Detr wRelease Delay Func

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 : 5419
Ship by Thu. 03 Jul to Mon. 07 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 1.1812

Multiples of: 1

Cut Tape

APX811-31UG-7

Processor Supervisor 3.08V 2.5V/3V/3.3V/5V 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.

Diodes Incorporated

Availability : 5412
Ship by Mon. 21 Jul to Thu. 24 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 0.1011

Multiples of: 5

Voltage Supervisory

Smd/Smt

SOT - 143

2.5 v , 3 v , 3.3 v , 5 v

1 Input

Active High, Active Low, Push - Pull

Manual Reset

No Watchdog

200 ms

5.5 V

- 40 C

+ 85 C

Apx811

Reel

BD46465G-TR

Supervisory Circuits RESET 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 : 5410
Ship by Thu. 03 Jul to Mon. 07 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 0.3204

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

4.7 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Bd46

Reel

CN809M

PMIC - Supervisors SOT23-3 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.

Consonance

Availability : 5393
Ship by Mon. 21 Jul to Thu. 24 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 0.0188

Multiples of: 20

TPS389018DSER

Supervisory Circuits Low Quiescent Current, 1% Accurate Supervisor with Programmable-Delay 6-WSON -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 : 5383
Ship by Thu. 03 Jul to Mon. 07 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 0.8727

Multiples of: 1

Voltage Supervisory

Smd/Smt

SON - 6

1.73 V

1 Input

Open Drain

Manual Reset

30 s

5.5 V

- 40 C

+ 125 C

1 %

Tps3890

Reel

APX810S-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 : 5379
Ship by Thu. 03 Jul to Mon. 07 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 High, Push - Pull

No Manual Reset

no watchdog

No Backup

240 ms

5.5 V

- 40 C

+ 125 C

Apx809s/810S

Cut Tape

APX809S-29SR-7

Supervisory Circuits 3-pin MPU Power 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.

Diodes Incorporated

Availability : 5373
Ship by Thu. 03 Jul to Mon. 07 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 Detectors

Smd/Smt

SOT - 23 - 3

2.93 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

NCV303LSN29T1G

ON Semiconductor 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 : 5262
Ship by Thu. 03 Jul to Mon. 07 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 0.1364

Multiples of: 1

Voltage Monitors

Smd/Smt

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

2.9 V

1 Input

No Manual Reset

no watchdog

10 V

- 40 C

+ 125 C

2 %

Ncv303

Aec - Q100

Reel

TPS3808G30DBVT

Supervisory Circuits Programmable-Delay 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.

Texas Instruments

Availability : 4365
Ship by Thu. 03 Jul to Mon. 07 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 1.0329

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 6

2.79 V

1 Input

Active High, Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

300 ms

6.5 V

- 40 C

+ 125 C

0.5 %

Tps3808g30

Reel

TPS3896ADRYR

Supervisory Circuits Sgl Ch,Ultra Small Adj Sup 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.

Texas Instruments

Availability : 4275
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025