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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	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

TPS3305-18D

Supervisory Circuits Dual Processor

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 : 4719
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 1.954

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOIC - 8

1.8 v , 3.3 V

2 Input

Push - Pull

Manual Reset

Watchdog

watchdog

No Backup

200 ms

6 V

- 40 C

+ 85 C

Tps3305 - 18

Tube

TPS389030DSER

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 : 4716
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 0.7924

Multiples of: 1

Voltage Supervisory

Smd/Smt

SON - 6

2.89 V

1 Input

Open Drain

Manual Reset

30 s

5.5 V

- 40 C

+ 125 C

1 %

Tps3890

Reel

BU4825F-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 : 4708
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 0.2226

Multiples of: 1

Voltage Monitors

Smd/Smt

SOF - 4

2.5 V

1 Input

Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu48

Reel

R3111N561A-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 : 4673
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 0.2423

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

5.6 V

1 Input

Cmos, Open Drain

No Manual Reset

no watchdog

Backup

10 V

- 40 C

+ 85 C

2 %

R3111n

Cut Tape

R3118K291A-TR

Supervisory Circuits Low Voltage Detector with SENSE pin and 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 : 4666
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 0.378

Multiples of: 1

Voltage Detectors

Smd/Smt

DFN - PLP - 1212 - 6

2.9 V

1 Input

Cmos, Open Drain

No Manual Reset

no watchdog

Backup

100 ms

6 V

- 40 C

+ 85 C

1.5 %

R3118k

Cut Tape

R3119N050A-TR-FE

Supervisory Circuits 36V Input Voltage Detector with Delay Function or 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 : 4665
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 0.5827

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 5

5 V

1 Input

Cmos, Open Drain

No Manual Reset

no watchdog

Backup

85 ms

36 V

- 40 C

+ 105 C

1.5 %

R3119n

Cut Tape

UCC3946N

Supervisory Circuits Mcrprcsr Supervisor w/Watchdog Timer

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 : 4656
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 2.5313

Multiples of: 1

Voltage Supervisory

Through Hole

PDIP - 8

2 v to 5.5 V

1 Input

Push - Pull

No Manual Reset

Watchdog

watchdog

No Backup

adjustable

5.5 V

0 C

+ 70 C

Ucc3946

Tube

S-1009C20I-I4T1U

Supervisory Circuits Ultra Low Iq 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 : 4654
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 0.4653

Multiples of: 1

Voltage Detectors

SNT - 4A - 4

S - 1009

Cut Tape

TPS3808G18DBVRG4

Processor Supervisor 1.67V 0.4V to 5V 6-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.

Texas Instruments

Availability : 4651
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 1.1727

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 6

1.67 V

1 Input

Active Low, Open Drain

Manual Reset

no watchdog

No Backup

300 ms

6.5 V

- 40 C

+ 125 C

Tps3808g18

Reel

MCP1316MT-29KE/OT

Supervisory Circuits ACTIVE LO OPEN DRAIN W/INT 4.7K PULL UP

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 : 4619
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 0.4576

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

2.9 V

1 Input

Active Low, Open Drain

Manual Reset

Watchdog

watchdog

No Backup

5.5 V

- 40 C

+ 125 C

Mcp131

Reel

BD5231FVE-TR

Supervisory Circuits CMOS DETEC VOLT 3.1V

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 : 4616
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 0.2211

Multiples of: 1

Voltage Monitors

Smd/Smt

VSOF - 5

3.1 V

1 Input

Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

10 V

- 40 C

+ 105 C

1 %

Bd52

Reel

S-1003NA29I-I6T1U

Supervisory Circuits Manual Reset, Delay 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 : 4612
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 0.5149

Multiples of: 1

Voltage Detectors

SNT - 6A - 6

S - 1003

Cut Tape

SSP54123

SOP-8 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.

Siproin

Availability : 4607
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 0.0717

Multiples of: 5

TPS3780ADRYR

Processor Supervisor Adj/Adj Adj/Adj 6-Pin USON 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.

Texas Instruments

Availability : 4607
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 0.8929

Multiples of: 1

Voltage Monitors

Smd/Smt

SON - 6

Adj

2 Input

Manual Reset

no watchdog

6.5 V

- 40 C

+ 125 C

1 %

Reel

MIC826ZYMT TR

Supervisory Circuits .5% Single Voltage 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.

Microchip

Availability : 4591
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 0.4125

Multiples of: 1

Voltage Supervisory

Smd/Smt

TDFN - 6

2.315 V

1 Input

Active High, Active Low, Push - Pull

Manual Reset

Watchdog

watchdog

No Backup

10 us

5.5 V

- 40 C

+ 125 C

Mic826

Reel

TPS3813L30DBVR

Texas Instruments Supervisory Circuits wProg Watchdog Window

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 : 4588
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 0.8569

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 6

2.5 v , 3 v , 3.3 v , 5 v

1 Input

Open Collector / Drain

No Manual Reset

watchdog

No Backup

25 ms

6 V

- 40 C

+ 85 C

Tps3813l30

Reel

MCP1318T-45LE/OT

Supervisory Circuits Active low P-P + Active high P-P, WDI (WDI = 1600ms, reset delay = 200ms, Vtrpd - 4.5V)

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.

Microchip

Availability : 4584
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 0.7796

Multiples of: 1

Mcp1318

Reel

CN825Z

SOT-23-6 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.

Consonance

Availability : 4578
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 0.101

Multiples of: 5

STM706RAM6F

STMicroelectronics Supervisory Circuits 5V Supervisor 200ms 1.6s Timer 40uA

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 : 4578
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 0.4738

Multiples of: 1

Voltage Supervisory

Smd/Smt

SO - 8

3 V

1 Input

Active Low, Push - Pull

Manual Reset

Watchdog

watchdog

No Backup

5.5 V

- 40 C

+ 85 C

Stm706r

Reel

TPS3779ADBVR

Supervisory Circuits Push-pull, low-power, dual-voltage detector in a small uSON package 6-SOT-23 -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 : 4509
Ship by Thu. 03 Jul to Mon. 07 Jul

July 2025