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

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 Wed. 27 Aug to Fri. 29 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 0.1698

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 Fri. 29 Aug to Thu. 04 Sep

September 2025

September 2025
	S	M	T	W	T	F	S
36	31	1	2	3	4	5	6
37	7	8	9	10	11	12	13
38	14	15	16	17	18	19	20
39	21	22	23	24	25	26	27
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11

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 Fri. 29 Aug to Thu. 04 Sep

September 2025

September 2025
	S	M	T	W	T	F	S
36	31	1	2	3	4	5	6
37	7	8	9	10	11	12	13
38	14	15	16	17	18	19	20
39	21	22	23	24	25	26	27
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11

USD 0.4355

Multiples of: 1000

NCV33161DMR2G

Supervisory Circuits AEC ANA UNI VOLT 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.

ON Semiconductor

Availability : 7760
Ship by Fri. 29 Aug to Thu. 04 Sep

September 2025

September 2025
	S	M	T	W	T	F	S
36	31	1	2	3	4	5	6
37	7	8	9	10	11	12	13
38	14	15	16	17	18	19	20
39	21	22	23	24	25	26	27
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11

USD 0.725

Multiples of: 4000

Voltage Monitors

Smd/Smt

MICRO - 8

2 v , 4 V

2 Input

Open Collector / Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

40 V

- 40 C

+ 125 C

2 %

Ncv33161

Aec - Q100

Reel

STM6905TGEDS6F

STMicroelectronics Supervisory Circuits QUIN ULT LO VLT SPVR PUSH BUTTON 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 : 7760
Ship by Fri. 29 Aug to Thu. 04 Sep

September 2025

September 2025
	S	M	T	W	T	F	S
36	31	1	2	3	4	5	6
37	7	8	9	10	11	12	13
38	14	15	16	17	18	19	20
39	21	22	23	24	25	26	27
40	28	29	30	1	2	3	4
41	5	6	7	8	9	10	11

USD 1.96

Multiples of: 4000

Voltage Supervisory

Smd/Smt

TSSOP - 8

0.8 v to 5.5 V

5 Input

Open Drain

Manual Reset

no watchdog

280 ms

5.5 V

- 40 C

+ 85 C

1.8 %

Stm6905

Reel

TCTH012AE,LF(CT

Supervisory Circuits CMOS Linear IC Over Temp Detection IC IPTCO: 1uA 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 : 7755
Ship by Wed. 27 Aug to Fri. 29 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 0.1698

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

TCTH012BE,LF(CT

Supervisory Circuits CMOS Linear IC Over Temp Detection IC IPTCO: 1uA Latching-func PTCGOOD: Open-Drain

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 : 7755
Ship by Wed. 27 Aug to Fri. 29 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 0.1698

Multiples of: 1

Voltage Detector

SMD/SMT

SOT - 553 - 5

1 Input

Open Drain

No Manual Reset

No Backup

5.5 V

- 40 C

+ 125 C

8 %

Reel , Cut Tape

TCTH022BE,LF(CT

Supervisory Circuits Over Temp Detection IC IPTCO: 10uA VDET: 0.5V Latching-func PTCGOOD: Open-Drain

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 : 7744
Ship by Wed. 27 Aug to Fri. 29 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 0.1698

Multiples of: 1

Voltage Detector

SMD/SMT

SOT - 553 - 5

5.5 V

1 Input

Open Drain

No Manual Reset

No Watchdog

No Backup

5.5 V

- 40 C

+ 125 C

8 %

Reel , Cut Tape

TCTH011AE,LF(CT

Supervisory Circuits CMOS Linear IC Over Temp Detection IC IPTCO: 1uA 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 : 7731
Ship by Wed. 27 Aug to Fri. 29 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 0.1627

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-1009N17I-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 : 7722
Ship by Wed. 27 Aug to Fri. 29 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 0.4653

Multiples of: 1

Voltage Detectors

SNT - 4A - 4

S - 1009

Cut Tape

MCP131T-450E/TT

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 : 7720
Ship by Wed. 27 Aug to Fri. 29 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 0.4181

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

4.38 V

1 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

120 ms

5.5 V

- 40 C

+ 125 C

Mcp131

Reel

TC54VC2102ECB713

Supervisor Push-Pull, Totem Pole 1 Channel 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 : 7701
Ship by Wed. 27 Aug to Fri. 29 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 0.451

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23A - 3

1.1 v to 6 V

1 Input

Active Low, Push - Pull

No Manual Reset

No Watchdog

no watchdog

Backup

10 V

- 40 C

+ 85 C

Tc54

Reel

TCTH011BE,LF(CT

Supervisory Circuits CMOS Linear IC Over Temp Detection IC IPTCO: 1uA PTCGOOD: Open-Drain

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 : 7682
Ship by Wed. 27 Aug to Fri. 29 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 0.1698

Multiples of: 1

Voltage Detector

SMD/SMT

SOT - 553 - 5

1 Input

Open Drain

No Manual Reset

No Backup

5.5 V

- 40 C

+ 125 C

8 %

Reel , Cut Tape

TCTH021AE,LF(CT

Supervisory Circuits Over Temp Detection IC IPTCO: 10uA 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 : 7665
Ship by Wed. 27 Aug to Fri. 29 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 0.1698

Multiples of: 1

Voltage Detector

SMD/SMT

SOT - 553 - 5

5.5 V

1 Input

Push - Pull

No Manual Reset

No Watchdog

No Backup

5.5 V

- 40 C

+ 125 C

8 %

Reel , Cut Tape

RT9818C-29GV

Supervisory Circuits Micro-Power Voltage Detectors

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.

Richtek

Availability : 7639
Ship by Wed. 27 Aug to Fri. 29 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 0.143

Multiples of: 1

Voltage Detector

SMD/SMT

SOT - 23 - 3

2.9 V

Open Drain

Manual Reset

No Watchdog

No Backup

220 ms

6 V

- 40 C

+ 85 C

1.5 %

Reel , Cut Tape

MC33164DM-5R2G

ON Semiconductor Supervisory Circuits 4.27V 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 : 7556
Ship by Wed. 27 Aug to Fri. 29 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 0.5105

Multiples of: 1

Voltage Supervisory

Smd/Smt

MSOP - 8

5 V

1 Input

Open Collector / Drain

No Manual Reset

no watchdog

No Backup

adjustable

10 V

- 40 C

+ 125 C

Mc33164

Reel

APX803S00-26SA-7

Supervisory Circuits 2.63V 1.7ms 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 : 7542
Ship by Wed. 27 Aug to Fri. 29 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 0.0935

Multiples of: 1

Cut Tape

APX825A-46W6G-7

Diodes Incorporated Supervisory Circuits 1.1V-5.5V 4.63V 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 : 7513
Ship by Wed. 27 Aug to Fri. 29 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 0.1573

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 26 - 6

4.63 V

1 Input

Active High, Active Low

Manual Reset

watchdog

No Backup

280 ms

5.5 V

- 40 C

+ 85 C

Apx825

Reel

BD5223G-1TR

Supervisory Circuits 2.3V ADJ DELAY 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.

ROHM

Availability : 7492
Ship by Wed. 27 Aug to Fri. 29 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 0.1271

Multiples of: 1

Voltage Detector

SMD/SMT

SSOP - 5

2.3 V

1 Input

Open Drain

No Manual Reset

No Watchdog

No Backup

7 V

- 40 C

+ 85 C

0.9 %

Reel , Cut Tape

BU4229FVE-TR

Supervisory Circuits LOW VOLT DETECT 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 : 7484
Ship by Wed. 27 Aug to Fri. 29 Aug

August 2025