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

APX803S-40SA-7

Supervisory Circuits 4.0V 240ms 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 : 4604
Ship by Thu. 28 Aug to Mon. 01 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 0.1034

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 3

4 V

1 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

240 ms

5.5 V

- 40 C

+ 85 C

Apx803s

Cut Tape

APX810S-29SA-7

Supervisory Circuits 3-pin MPU Power 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.

Diodes Incorporated

Availability : 4590
Ship by Thu. 28 Aug to Mon. 01 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 0.1144

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 3

2.93 V

1 Input

Active High, Push - Pull

No Manual Reset

no watchdog

No Backup

240 ms

5.5 V

- 40 C

+ 125 C

Apx809s/810S

Cut Tape

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. 28 Aug to Mon. 01 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 0.7796

Multiples of: 1

Mcp1318

Reel

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. 01 Sep to Fri. 05 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 0.4738

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

APX803L20-28SA-7

Supervisory Circuits 2.8V 220ms Reset Generator

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 : 4559
Ship by Thu. 28 Aug to Mon. 01 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 0.1034

Multiples of: 1

Cut Tape

MCP111T-195I/TT

Microchip Technology Supervisory Circuits 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.

Microchip

Availability : 4527
Ship by Thu. 28 Aug to Mon. 01 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 0.3397

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

Mcp111

Reel

TPS3840PL27DBVR

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 : 4526
Ship by Thu. 28 Aug to Mon. 01 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 0.3223

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

2.7 V

1 Input

Active Low, Push - Pull

Manual Reset

no watchdog

Backup

619 ms

10 V

- 40 C

+ 125 C

1 %

Tps3840

NCP303LSN27T1G

Supervisory Circuits 2.7V 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 : 4525
Ship by Mon. 15 Sep to Thu. 18 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 0.2662

Multiples of: 1

Voltage Monitors

Smd/Smt

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

2.7 V

1 Input

Active Low, Open Drain

No Manual Reset

No Watchdog

no watchdog

Backup

10 V

- 40 C

+ 125 C

2 %

Ncp303

Reel

TPS3836E18DBVR

Supervisory Circuits 220nA w/ 10ms/200ms Select 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.

Texas Instruments

Availability : 4511
Ship by Thu. 28 Aug to Mon. 01 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 1.111

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

1.6 v to 6 V

1 Input

Push - Pull

Manual Reset

no watchdog

No Backup

10 ms , 200 ms

6 V

- 40 C

+ 85 C

Tps3836e18

Reel

APX824-23W5G-7

Diodes Incorporated Supervisory Circuits 1.1V-5.5V 2.25V 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 : 4504
Ship by Thu. 28 Aug to Mon. 01 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 0.1551

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 25 - 5

2.25 V

1 Input

Active High, Active Low

No Manual Reset

watchdog

No Backup

280 ms

5.5 V

- 40 C

+ 85 C

Apx824

Reel

TL7712ACDE4

Supervisory Circuits Sngl SVS For 12V Sys w/Prg Time Delay

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 : 4500
Ship by Thu. 28 Aug to Mon. 01 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 0.8032

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOIC - 8

10.8 V

1 Input

Active High, Active Low, Open Drain

Manual Reset

No Watchdog

No Backup

programmable

18 V

0 C

+ 70 C

Tl7712a

Tube

APX803L-44SA-7

Supervisory Circuits 4.4V 0ms Reset Generator

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 : 4486
Ship by Thu. 28 Aug to Mon. 01 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 0.1034

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 3

4.4 V

1 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

5.5 V

- 40 C

+ 150 C

1.5 %

Apx803l

Cut Tape

S-1009N35I-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 : 4470
Ship by Thu. 28 Aug to Mon. 01 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 0.4653

Multiples of: 1

Voltage Detectors

SNT - 4A - 4

S - 1009

Cut Tape

MAX809RDBZRG

SOT-23-3 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.

HANSCHIP

Availability : 4462
Ship by Mon. 15 Sep to Thu. 18 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 0.0195

Multiples of: 20

BD4931G-TR

ROHM Semiconductor 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 : 4433
Ship by Thu. 28 Aug to Mon. 01 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 0.1507

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

3.1 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Bd49

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 : 4418
Ship by Thu. 28 Aug to Mon. 01 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 0.3377

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

TPS3899DL28DSER

Supervisory Circuits Nanopower supervisor with programmable sense and reset delay

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 : 4403
Ship by Thu. 28 Aug to Mon. 01 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 0.6276

Multiples of: 1

Voltage Supervisory

SMD/SMT

WSON - 6

2.8 V

1 Input

Active Low, Open Drain

Manual Reset

No Watchdog

Backup

40 us

6 V

- 40 C

+ 125 C

0.5 %

TPS3899

MC34064P-5RMG

Supervisor Open Drain or Open Collector 1 Channel TO-92 (TO-226)

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 : 4398
Ship by Thu. 28 Aug to Mon. 01 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 0.3355

Multiples of: 1

Voltage Supervisory

Through Hole

TO - 92 - 3 (TO - 226)

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

Ammo Pack

MIC803-26D4VC3-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 : 4397
Ship by Thu. 28 Aug to Mon. 01 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 0.2817

Multiples of: 1

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

MIC2774L-29YM5-TR

Supervisory Circuits Dual Voltage Supervisor with 0.3V and 2.93V Thresholds, Active-Low Push-Pull Output, 140ms Reset Pulse, Manual Reset, SOT23-5 (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 : 4375
Ship by Thu. 28 Aug to Mon. 01 Sep

September 2025