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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	Output Type
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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

APX811-29UG-7

Supervisory Circuits 4-Pin MPU Supervisor 240ms -0.3 to 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.

Diodes Incorporated

Availability : 5844
Ship by Fri. 31 Oct to Thu. 06 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 0.1176

Multiples of: 5

Voltage Supervisory

Smd/Smt

SOT - 143

2.5 v , 3 v , 3.3 v , 5 v

1 Input

Active High, Active Low, Push - Pull

Manual Reset

No Watchdog

200 ms

5.5 V

- 40 C

+ 85 C

Apx811

Reel

TPS3825-33DBVRG4

Processor Supervisor 2.93V 0V to 5.8V 5-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.

Texas Instruments

Availability : 2994
Ship by Wed. 29 Oct to Fri. 31 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 0.8195

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

2.93 V

1 Input

Push - Pull

Manual Reset

no watchdog

No Backup

200 ms

5.5 V

- 40 C

+ 85 C

Tps3825 - 33

Reel

R3121N050E-TR-KE

Supervisory Circuits 36V Input Volt Detr wRelease Delay Func

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.

Nisshinbo

Availability : 2967
Ship by Wed. 29 Oct to Fri. 31 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 1.1812

Multiples of: 1

Cut Tape

BD5360G-TR

Supervisory Circuits CMOS DETEC VOLT 6.0V

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 : 2965
Ship by Wed. 29 Oct to Fri. 31 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 0.1914

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

6 V

1 Input

Cmos

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

10 V

- 40 C

+ 105 C

1 %

Bd53

Reel

R3111N452A-TR-FE

Supervisory Circuits Low 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.

Nisshinbo

Availability : 2962
Ship by Wed. 29 Oct to Fri. 31 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 0.2714

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

4.5 V

1 Input

Cmos, Open Drain

No Manual Reset

no watchdog

Backup

10 V

- 40 C

+ 85 C

2 %

R3111n

Cut Tape

R3154N205A-TR-R

Supervisory Circuits 42V Input Window Voltage Detector with Diagnostic Function for Automotive Applications

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.

Nisshinbo

Availability : 2958
Ship by Wed. 29 Oct to Fri. 31 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 1.7204

Multiples of: 1

Voltage Detectors

SMD/SMT

SOT - 23 - 6

1.08 V

1 Input

Open Drain

No Manual Reset

No Watchdog

No Backup

4 ms

42 V

- 40 C

+ 125 C

0.75 %

R3154N - R

Reel , Cut Tape

BD45452G-TR

ROHM Semiconductor Supervisory Circuits RESET DETEC VOLT 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.

ROHM

Availability : 2945
Ship by Wed. 29 Oct to Fri. 31 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 0.3036

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

4.5 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Bd45

Reel

BU4210F-TR

Supervisory Circuits LOW VOLT DETECT VOLT 1.2V

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 : 2944
Ship by Wed. 29 Oct to Fri. 31 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 0.2664

Multiples of: 1

Voltage Monitors

Smd/Smt

SOP - 4

1 V

1 Input

Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

7 V

- 40 C

+ 125 C

1 %

Bu42

Reel

SSP61CN1902MR

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.

Siproin

Availability : 2935
Ship by Fri. 31 Oct to Thu. 06 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 0.0419

Multiples of: 5

HX809SDBZRG

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 : 2929
Ship by Fri. 31 Oct to Thu. 06 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 0.0198

Multiples of: 20

TPS3703A6330DSER

Supervisory Circuits High-accuracy window supervisor with reset time delay 6-WSON -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 : 2929
Ship by Fri. 31 Oct to Thu. 06 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 0.6251

Multiples of: 3000

Voltage Supervisory

SMD/SMT

WSON - 6

3.3 V

1 Input

Active Low, Open Drain

Manual Reset

No Watchdog

No Backup

200 ms

5.5 V

- 40 C

+ 125 C

0.25 %

Reel , Cut Tape

BU4840FVE-TR

Supervisory Circuits IC CMOS VOLT 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 : 2928
Ship by Wed. 29 Oct to Fri. 31 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 0.2234

Multiples of: 1

Voltage Detectors

Smd/Smt

VSOF - 5

4 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4840fve

Cut Tape

MCP102T-300E/LB

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 : 2925
Ship by Wed. 29 Oct to Fri. 31 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 0.5755

Multiples of: 1

Voltage Supervisory

Smd/Smt

SC - 70 - 3

2.93 V

1 Input

Active Low, Push - Pull

No Manual Reset

No Watchdog

no watchdog

No Backup

120 ms

5.5 V

- 40 C

+ 125 C

Mcp102

Reel

MCP101T-300I/TT

Supervisory Circuits Push-Pull High

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 : 2924
Ship by Wed. 29 Oct to Fri. 31 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 0.4229

Multiples of: 1

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 watchdog

No Backup

5.5 V

- 40 C

+ 85 C

Mcp101

Reel

TPS3808G12DBVR

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 : 2922
Ship by Fri. 31 Oct to Thu. 06 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 0.4582

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 6

1.12 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 %

Tps3808g12

Reel

APX803S-44SR-7

Supervisory Circuits 4.38V 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 : 2921
Ship by Wed. 29 Oct to Fri. 31 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 0.1034

Multiples of: 1

Cut Tape

TPS3106K33DBVR

Supervisory Circuits Current/Supply-Volt 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 : 2900
Ship by Fri. 31 Oct to Thu. 06 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 0.4091

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 6

2.941 V

2 Input

Active - Low,Open - Drain

Manual Reset

no watchdog

No Backup

130 ms

3.3 V

- 40 C

+ 85 C

0.75 %

Tps3106k33

Cut Tape

MCP1321T-29LE/OT

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 : 2643
Ship by Wed. 29 Oct to Fri. 31 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 0.7425

Multiples of: 1

BU4344FVE-TR

Voltage Detector With Built In Delay Circuit 0.9V to 4.8V 5-Pin VSOF 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.

ROHM

Availability : 0

USD 0.1761

Multiples of: 1

Voltage Monitors

Smd/Smt

VSOF - 5

Bu43

Reel

BD5326G-TR

Supervisory Circuits CMOS DETEC VOLT 2.6V

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 : 0

USD 0.24

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

2.6 V

1 Input

Cmos

No Manual Reset

No Watchdog