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

TPS3808G33DBVR

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 : 26160
Ship by Mon. 08 Sep to Thu. 11 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 0.1523

Multiples of: 5

Voltage Supervisory

Smd/Smt

SOT - 23 - 6

3.07 V

1 Input

Active Low, Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

300 ms

6.5 V

- 40 C

+ 125 C

0.5 %

Tps3808g33

Reel

TLV803EA26DPWR

Supervisory Circuits Low-power voltage supervisor (reset IC) with active-low open-drain output 5-X2SON -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 : 21238
Ship by Thu. 21 Aug to Mon. 25 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 0.33

Multiples of: 1

Cut Tape

NCP304LSQ47T1G

Supervisory Circuits 4.7V 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 : 21082
Ship by Mon. 25 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 0.2335

Multiples of: 1

Voltage Monitors

Smd/Smt

SC - 82AB - 4

4.7 V

1 Input

No Manual Reset

No Watchdog

no watchdog

10 V

- 40 C

+ 85 C

2 %

Ncp304

Reel

APX803-29SAG-7

Processor Supervisor 2.93V 2.5V/3V/3.3V/5V 3-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.

Diodes Incorporated

Availability : 20944
Ship by Thu. 21 Aug to Mon. 25 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 0.1001

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

4 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

200 ms

5.5 V

- 40 C

+ 85 C

Apx803

Cut Tape

MAX809REUR+T

Supervisory Circuits 3-Pin Microprocessor Reset Circuits

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 : 20826
Ship by Mon. 08 Sep to Thu. 11 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 0.1978

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3L

2.5 V , 3 V , 3.3 V , 5 V

1 Input

Push - Pull

Manual Reset

No Watchdog

no watchdog

No Backup

200 ms

5.5 V

- 40 C

+ 105 C

Max809r

Reel

CAT809LTBI-GT3

Supervisory Circuits Push-pull Act 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 : 19572
Ship by Thu. 21 Aug to Mon. 25 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 0.2035

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

2.5 V , 3 V , 3.3 V , 5 V

1 Input

Active Low, Push - Pull

No Manual Reset

No Watchdog

No Backup

240 ms

5.5 V

- 40 C

+ 85 C

Cat809

Reel

TCTH021BE,LF(CT

Supervisory Circuits Over Temp Detection IC IPTCO: 10uA VDET: 0.5V 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 : 19332
Ship by Thu. 21 Aug to Mon. 25 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

CAT823YTDI-GT3

ON Semiconductor Supervisory Circuits act low MRWD

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 : 18749
Ship by Thu. 21 Aug to Mon. 25 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 0.3374

Multiples of: 1

Voltage Supervisory

Smd/Smt

TSOT - 23 - 5

3 v , 3.3 v , 5 V

1 Input

Manual Reset

watchdog

5.5 V

- 40 C

+ 85 C

Cat823

Reel

STM6718TWWY6F

STMicroelectronics Supervisory Circuits Dual Ultra-Low Volt 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 : 18731
Ship by Mon. 25 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 0.715

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

0.8 v to 5.5 V

2 Input

Active Low, Push - Pull

Manual Reset

no watchdog

No Backup

280 ms

5.5 V

- 40 C

+ 85 C

Stm6718

Reel

NCV301LSN28T1G

Supervisory Circuits 2.8V Detector w/N-Channel Output

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 : 18686
Ship by Thu. 21 Aug to Mon. 25 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 0.1584

Multiples of: 1

Voltage Monitors

Smd/Smt

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

2.8 V

1 Input

Active Low, Open Drain

No Manual Reset

No Watchdog

no watchdog

Backup

10 V

- 40 C

+ 125 C

2 %

Ncv301

Aec - Q100

Reel

MAX809J

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 : 18415
Ship by Mon. 08 Sep to Thu. 11 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 0.043

Multiples of: 5

MC33164D-5R2G

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 : 17860
Ship by Thu. 21 Aug to Mon. 25 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 0.3751

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOIC - 8

5 V

1 Input

Open Collector / Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

10 V

- 40 C

+ 125 C

Mc33164

Reel

MAX810L

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 : 17620
Ship by Mon. 08 Sep to Thu. 11 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 0.0432

Multiples of: 5

STM809TWX6F

Supervisory Circuits 3.08V Reset 140ms

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 : 17460
Ship by Mon. 25 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 0.1378

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 Backup

280 ms

5.5 V

- 40 C

+ 85 C

Stm809

Reel

MIC803-26D3VC3-TR

Supervisory Circuits 3-Pin Microprocessor Supervisor Circuit w/ Open-Drain Reset Output

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 : 17460
Ship by Mon. 25 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 0.2262

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SC - 70 - 3

1 Input

Open Collector / Drain

Manual Reset

No Watchdog

no watchdog

No Backup

15 us

5.5 V

- 40 C

+ 125 C

Mic803

Reel

MIC6315-30D3UY-TR

Supervisory Circuits Reset Generator, Active Low, 3.00V VTH, Manual Reset, SOT-143 (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 : 17460
Ship by Mon. 25 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 0.3062

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 143 - 4

3 v , 3.3 v , 5 V

1 Input

Active Low, Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

0.5 us

5.5 V

- 40 C

+ 85 C

Mic6315

Reel

MC34064D-5R2G

Supervisory Circuits 4.59V 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 : 16975
Ship by Mon. 25 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 0.4391

Multiples of: 2500

Voltage Supervisory

Smd/Smt

SOIC - 8

4.6 V

1 Input

Open Collector / Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

6.5 V

0 C

+ 70 C

Mc34064

Reel

MC34064SN-5T1G

Supervisory Circuits 4.59V 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 : 5820
Ship by Mon. 25 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 0.7379

Multiples of: 1

Voltage Supervisory

Smd/Smt

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

4.6 V

1 Input

Open Collector / Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

6.5 V

0 C

+ 70 C

Mc34064

Reel

MAX810RTRG

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 : 4850
Ship by Mon. 25 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 0.2512

Multiples of: 1

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

Hot

MIC826SYMT-TR

Supervisory Circuits Voltage Supervisor Watchdog/Dual Output

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 : 4820
Ship by Mon. 25 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 0.1951

Multiples of: 1

Voltage Supervisory

Smd/Smt

TDFN - 6

1.8 v to 5 V

1 Input

Active High, Active Low, Push - Pull

Manual Reset

Watchdog

watchdog

No Backup

10 us

5 V

- 40 C

+ 125 C

Mic826

Reel

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Supervisory Circuits

Supervisory Circuits

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