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

MIC809LYC3-TR

Supervisory Circuits 3-Pin Microprocessor Reset Circuit with Push-Pull Active-Low Output, 4.63V Thres

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 : 8439
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.4846

Multiples of: 1

Voltage Supervisory

Smd/Smt

SC70 - 3

Mic809

Cut Tape

NCP308MT300TBG

Supervisory Circuits Voltage Supervisor, Ultra Low Quiescent Current, Programmable Delay Time

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 : 8415
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.422

Multiples of: 1

Voltage Supervisory

Ncp308

Reel

MCP131T-195ITT

Microchip Technology Supervisory Circuits Open Drain 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 : 8407
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.4818

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

1.9 V

1 Input

No Manual Reset

no watchdog

5.5 V

- 40 C

+ 85 C

Mcp131

Reel

TPS3897PDRYR

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 : 8392
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.3333

Multiples of: 1

Voltage Supervisory

Smd/Smt

USON - 6

Adj

1 Input

Active High, Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

190 ms

6.5 V

- 40 C

+ 125 C

1 %

Tps3897

Reel

MAX810LTRG

Supervisor Push-Pull, Totem Pole 1 Channel SOT-23-3 (TO-236)

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 : 8390
Ship by Wed. 29 Oct to Tue. 04 Nov

November 2025

November 2025
	S	M	T	W	T	F	S
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8
46	9	10	11	12	13	14	15
47	16	17	18	19	20	21	22
48	23	24	25	26	27	28	29
49	30	1	2	3	4	5	6

USD 0.1998

Multiples of: 5

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

1.2 V To 4.9 V

1 Input

Push - Pull

No Manual Reset

No Watchdog

no watchdog

No Backup

460 ms

5.5 V

- 40 C

+ 105 C

Max810

Reel

NCV303LSN31T1G

ON Semiconductor Supervisory Circuits VDETECTOR W PROG DLY 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.

ON Semiconductor

Availability : 8380
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.1568

Multiples of: 1

Voltage Monitors

Smd/Smt

TSOP - 5

3.1 V

1 Input

No Manual Reset

no watchdog

10 V

- 40 C

+ 125 C

2 %

Ncp303

Aec - Q100

Reel

MIC2782DLYCS-TR

Supervisory Circuits Dual Input Push Button Reset IC with RESET and ANDOUT Outputs

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 : 8337
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.4361

Multiples of: 1

Voltage Supervisory

Smd/Smt

WLCSP - 6

2 Input

Active Low, Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

5.5 V

- 40 C

+ 85 C

Mic2782

Reel

NCP303LSN31T1G

Supervisory Circuits 3.1V 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 : 8148
Ship by Wed. 29 Oct to Tue. 04 Nov

November 2025

November 2025
	S	M	T	W	T	F	S
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8
46	9	10	11	12	13	14	15
47	16	17	18	19	20	21	22
48	23	24	25	26	27	28	29
49	30	1	2	3	4	5	6

USD 0.1895

Multiples of: 1

Voltage Monitors

Smd/Smt

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

3.1 V

1 Input

Active Low, Open Drain

No Manual Reset

No Watchdog

no watchdog

Backup

10 V

- 40 C

+ 125 C

2 %

Ncp303

Reel

MCP131T-195ILB

Microchip Technology Supervisory Circuits Open Drain 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 : 8093
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.5821

Multiples of: 1

Voltage Supervisory

Smd/Smt

SC - 70 - 3

1.9 V

1 Input

No Manual Reset

no watchdog

5.5 V

- 40 C

+ 85 C

Mcp131

Reel

HG811SM4/TR

SOT-143 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.

HGSEMI

Availability : 8089
Ship by Wed. 29 Oct to Tue. 04 Nov

November 2025

November 2025
	S	M	T	W	T	F	S
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8
46	9	10	11	12	13	14	15
47	16	17	18	19	20	21	22
48	23	24	25	26	27	28	29
49	30	1	2	3	4	5	6

USD 0.0775

Multiples of: 5

TPS3850G50QDRCRQ1

Supervisory Circuits Automotive, window supervisor for OV & UV monitoring with window watchdog timer & programmable delay 10-VSON -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 : 8085
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 1.21

Multiples of: 1

Voltage Supervisory

Smd/Smt

VSON - 10

5 V

1 Input

Active - Low,Open - Drain

No Manual Reset

watchdog

No Backup

programmable

6.5 V

- 40 C

+ 125 C

0.8 %

Tps3850 - Q1

Aec - Q100

Cut Tape

MC33164D-3R2G

Supervisory Circuits 2.65V UnderVoltage Sensing 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.

ON Semiconductor

Availability : 7998
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.3025

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOIC - 8

3 V

1 Input

Open Collector / Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

10 V

- 40 C

+ 125 C

Mc33164

Reel

MCP131T-315ELB

Microchip Technology Supervisory Circuits Open Drain 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 : 7954
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.675

Multiples of: 1

Voltage Supervisory

Smd/Smt

SC - 70 - 3

3.08 V

1 Input

No Manual Reset

no watchdog

5.5 V

- 40 C

+ 125 C

Mcp131

Reel

NCP308SN125T1G

Supervisory Circuits Voltage Supervisor, Ultra Low Quiescent Current, Programmable Delay Time

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 : 7919
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.4882

Multiples of: 1

Voltage Detectors

Ncp308

Cut Tape

SP706EN-LTR

Exar Supervisory Circuits LOW PWR MICROPROCESSOR

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.

MaxLinear

Availability : 7910
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.4004

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOIC - 8 Narrow

Sp706

Reel

TCM809SVNB713

Supervisory Circuits Microprocessor 2.93V

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 : 7841
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.3432

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23B - 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

560 ms

5.5 V

- 40 C

+ 125 C

Tcm809

Reel

BD5237G-TR

Supervisory Circuits CMOS DETEC VOLT 3.7V

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 : 7789
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.1524

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

3.7 V

1 Input

Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

10 V

- 40 C

+ 105 C

1 %

Bd52

Reel

TCTH022AE,LF(CT

Supervisory Circuits CMOS Linear IC Over Temp Detection IC IPTCO: 10uA Latching-func PTCGOOD: Push-Pull

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.

Toshiba

Availability : 7760
Ship by Mon. 27 Oct to Wed. 29 Oct

October 2025

October 2025
	S	M	T	W	T	F	S
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11
42	12	13	14	15	16	17	18
43	19	20	21	22	23	24	25
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8

USD 0.1698

Multiples of: 1

Voltage Detector

SMD/SMT

SOT - 553 - 5

1 Input

Push - Pull

No Manual Reset

No Backup

5.5 V

- 40 C

+ 125 C

8 %

Reel , Cut Tape

S-80841CLUA-B62-T2

Voltage Detector 0.8V to 6V 4-Pin(3+Tab) SOT-89 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.

Ablic

Availability : 7760
Ship by Wed. 29 Oct to Tue. 04 Nov

November 2025

November 2025
	S	M	T	W	T	F	S
44	26	27	28	29	30	31	1
45	2	3	4	5	6	7	8
46	9	10	11	12	13	14	15
47	16	17	18	19	20	21	22
48	23	24	25	26	27	28	29
49	30	1	2	3	4	5	6

USD 0.4355

Multiples of: 1000

S-80841CLUA-B62T2G

Processor Supervisor 4.1V 1 Active Low/CMOS 4-Pin(3+Tab) SOT-89

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 : 7760
Ship by Wed. 29 Oct to Tue. 04 Nov

November 2025