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

MCP131T-270E/TT

Supervisor Open Drain or Open Collector 1 Channel SOT-23-3

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 : 7743
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 0.5225

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

2.63 V

1 Input

Active Low, Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

5.5 V

- 40 C

+ 125 C

Mcp131

Reel

MCP810T-315I/TT

Supervisor Push-Pull, Totem Pole 1 Channel SOT-23-3

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 : 5820
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 0.3353

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

3.075 V

1 Input

Active High, Push - Pull

No Manual Reset

No Watchdog

no watchdog

No Backup

5.5 V

- 40 C

+ 85 C

Mcp810

Reel

MCP111T-300E/TT

Supervisor Integrated Circuit; open drain; 2,93 V; SOT23-5; 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.

Microchip

Availability : 5820
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 0.3353

Multiples of: 3000

MCP111T-450E/TT

Supervisor Open Drain or Open Collector 1 Channel SOT-23-3

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 : 5820
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 0.3353

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

4.38 V

1 Input

No Manual Reset

No Watchdog

5.5 V

- 40 C

+ 125 C

Reel

MCP809T-270I/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 : 5820
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 0.3353

Multiples of: 3000

2.625 V

ADM809LARTZ-REEL7

Supervisory Circuits 5V CMOS MPU IC Low Push/Pull Out

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 : 5820
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 0.364

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

2.5 v , 3 v , 3.3 v , 5 v

1 Input

Push - Pull

No Manual Reset

No Watchdog

no watchdog

No Backup

840 ms

5.5 V

- 40 C

+ 125 C

Adm809

Reel

TPS3840DL29DBVR

Supervisory Circuits Nanopower high-input voltage supervisor with manual reset and programmable-reset time delay 5-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 : 5820
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 0.3759

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23

2.9 V

2 Input

Active Low, Open Drain

Manual Reset

no watchdog

Backup

6.2 s

10 V

- 40 C

+ 125 C

1 %

Tps3840

Cut Tape

MCP102T-315E/TT

Supervisory Circuits Push-Pull 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.

Microchip

Availability : 5820
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 0.3836

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

3.08 V

1 Input

Active Low, Push - Pull

No Manual Reset

No Watchdog

No Backup

120 ms

5.5 V

- 40 C

+ 125 C

Reel

CAT803TSDI-T3

Processor Supervisor 3.08V 5V/3.3V/3V/2.5V 3-Pin SC-70 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 : 5820
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 0.3839

Multiples of: 1

Voltage Supervisory

Smd/Smt

SC - 70 - 3

2.5 v , 3 v , 3.3 v , 5 v

1 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

240 ms

5.5 V

- 40 C

+ 85 C

Reel

STM1810LWX7F

STMicroelectronics Supervisory Circuits 4.62VRST Active Low Push-Pull 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 : 5820
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 0.3875

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

3 v , 3.3 v , 5 V

1 Input

Active Low, Push - Pull

No Manual Reset

No Watchdog

no watchdog

No Backup

5.5 V

- 40 C

+ 105 C

Stm1810

Reel

STM1817SWX7F

Supervisory Circuits 2.88VRST Active High Push-Pull 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 : 5820
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 0.3875

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

3 v , 3.3 v , 5 V

1 Input

Active High, Push - Pull

No Manual Reset

no watchdog

No Backup

5.5 V

- 40 C

+ 105 C

Stm1817

Reel

STM1061N28WX6F

Supervisory Circuits 2.8V 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 : 5820
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 0.3954

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

2.8 V

1 Input

Active Low, Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

6 V

- 40 C

+ 85 C

Stm1061

Reel

TC54VN4002ECB713

Microchip Technology Supervisory Circuits 4.0vVtg Det 2% Tol.

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 : 5820
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 0.4067

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23A - 3

1.1 v to 6 V

1 Input

Active Low, Open Drain

No Manual Reset

No Watchdog

no watchdog

10 V

- 40 C

+ 85 C

Tc54

Reel

MIC8115TUY TR

Supervisory Circuits Microprocessor Reset Circuit with Manual Reset, Push-Pull Active-Low Output, 3.08V Threshold, 1100ms 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 : 5820
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 0.4069

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 143 - 4

3.3 V

1 Input

Active Low

Manual Reset

No Watchdog

No Backup

0.5 us

5.5 V

- 40 C

+ 85 C

Mic8115

Reel

S-80930CNMC-G80T2G

Supervisory Circuits 3.0V 1.2uA N-Ch Open

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 : 5820
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

3 V

1 Input

No Manual Reset

no watchdog

adjustable

10 V

- 40 C

+ 85 C

3 %

Cut Tape

TPS3840DL32DBVRQ1

Supervisory Circuits Automotive high-input voltage supervisor with manual reset and programmable-reset time delay 5-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 : 5820
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 0.4414

Multiples of: 1

Voltage Supervisory

SMD/SMT

SOT - 23 - 5

3.2 V

1 Input

Active Low, Open Drain

Manual Reset

No Watchdog

No Backup

619 ms

10 V

- 40 C

+ 125 C

1 %

Reel , Cut Tape

STM1831L24WY6F

Supervisory Circuits 100 mV Voltage Sense 1.6V to 5.7V 0.8uA

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 : 5820
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 0.4378

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

1.6 v to 5.7 V

1 Input

Active Low

Manual Reset

No Watchdog

Backup

55 us

6 V

- 40 C

+ 85 C

Stm1831l

Reel

STM1815TWX7F

Supervisory Circuits 3.06VRST Active Low Push-Pull 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 : 5820
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 0.4645

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

3 v , 3.3 v , 5 V

1 Input

Active Low, Push - Pull

No Manual Reset

No Watchdog

no watchdog

No Backup

5.5 V

- 40 C

+ 105 C

Stm1815

Reel

STM812TW16F

Supervisor Push-Pull, Totem Pole 1 Channel SOT-143-4

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 : 2910
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 0.3662

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 143 - 4

3 v , 3.3 v , 5 V

1 Input

Active High, Push - Pull

Manual Reset

No Watchdog

No Backup

280 ms

5.5 V

- 40 C

+ 85 C

Stm812

Reel

MCP120T-485I/TT

Supervisor Open Drain or Open Collector 1 Channel SOT-23-3

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 : 2619
Ship by Mon. 07 Jul to Fri. 11 Jul

July 2025