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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	Manufacturer
	Type
	Mounting Style
	Output Voltage
	Package / Case
	Threshold Voltage
	Number of Inputs Monitored
	Output Type
	Manual Reset
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	Battery Backup Switching
	Reset Delay Time
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	Minimum Operating Temperature
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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

TPS3305-18DGNR

Supervisory Circuits Dual Processor

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 : 1996
Ship by Fri. 21 Nov to Thu. 27 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 1.6125

Multiples of: 1

Voltage Supervisory

Smd/Smt

HTSSOP - 8

1.8 v , 3.3 V

2 Input

Push - Pull

Manual Reset

Watchdog

watchdog

No Backup

200 ms

6 V

- 40 C

+ 85 C

Tps3305 - 18

Reel

TLV853MDBZR

Supervisory Circuits 3-Pin Voltage Supervisor with Active-Low, Open-Drain Reset 3-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 : 1995
Ship by Wed. 19 Nov to Fri. 21 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 0.2464

Multiples of: 1

Smd/Smt

SOT - 23 - 3

4.38 V

1 Input

Active - Low,Open - Drain

- 40 C

+ 125 C

Tlv853

Reel

BD48E27G-TR

Supervisory Circuits 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.

ROHM

Availability : 1994
Ship by Wed. 19 Nov to Fri. 21 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 0.1728

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 5

2.7 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

100 us

10 V

- 40 C

+ 105 C

1 %

Cut Tape

NCP308MT250TBG

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 : 1992
Ship by Wed. 19 Nov to Fri. 21 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 0.4385

Multiples of: 1

Voltage Detectors

Ncp308

Reel

MC34064P-5RPG

ON Semiconductor 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 : 1989
Ship by Wed. 19 Nov to Fri. 21 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 0.3355

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

adjustable

6.5 V

0 C

+ 70 C

Mc34064

BD46275G-TR

Supervisory Circuits RESET DETEC VOLT 2.8V

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 : 1988
Ship by Wed. 19 Nov to Fri. 21 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 0.3619

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

2.7 V

1 Input

Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

50 ms

10 V

- 40 C

+ 105 C

1 %

Bd46

Reel

BU4325G-TR

ROHM Semiconductor Supervisory Circuits CMOS LOW VOLT DETEC

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 : 1988
Ship by Fri. 21 Nov to Thu. 27 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 0.4525

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

2.5 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

adjustable

7 V

- 40 C

+ 125 C

1 %

Bu43

Reel

R3160N160B-TR-YE

Supervisory Circuits 60 V Industrial App

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 : 1986
Ship by Wed. 19 Nov to Fri. 21 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 1.575

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 6

16 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

60 V

- 50 C

+ 125 C

1.75 %

R3160n

Cut Tape

BU4939G-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 : 1984
Ship by Wed. 19 Nov to Fri. 21 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 0.1649

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 5

3.9 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4939g

Cut Tape

NCP803SN160T1G

Supervisory Circuits 1.6V 20mA 3-Pin w/uP Reset N-Channel

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 : 1984
Ship by Wed. 19 Nov to Fri. 21 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 0.297

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

1.2 v to 4.9 V

1 Input

Open Collector / Drain

No Manual Reset

No Watchdog

No Backup

460 ms

5.5 V

- 40 C

+ 105 C

Ncp803

Reel

LP3470A463DBVR

Supervisory Circuits Ultra-low-power active-low reset IC with programmable delay and 1% reset threshold 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 : 1981
Ship by Wed. 19 Nov to Fri. 21 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 0.7843

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

4.63 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

619 ms

10 V

- 40 C

+ 125 C

1 %

Lp3470a

Cut Tape

BU4928F-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 : 1980
Ship by Wed. 19 Nov to Fri. 21 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 0.2303

Multiples of: 1

Voltage Detectors

Smd/Smt

SOP - 4

2.8 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4928f

Cut Tape

MCP130-300FI/TO

Supervisory Circuits w/5K Pull-Up 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 : 1980
Ship by Wed. 19 Nov to Fri. 21 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 0.5536

Multiples of: 1

Voltage Supervisory

Through Hole

TO - 92 - 3

3 v , 3.3 v , 5 V

1 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

350 ms

5.5 V

- 40 C

+ 85 C

Mcp130

Bulk

BU4216G-TR

Supervisory Circuits CMOS LOW VOLT DETEC

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 : 1979
Ship by Wed. 19 Nov to Fri. 21 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 0.2076

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

1.6 V

Bu42

Reel

APX809S00-44SA-7

Supervisory Circuits 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 : 1978
Ship by Wed. 19 Nov to Fri. 21 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 0.1034

Multiples of: 1

Cut Tape

MIC2774L-28YM5-TR

Supervisory Circuits Dual Voltage Supervisor with 0.3V and 2.81V Thresholds, Active-Low Push-Pull Out

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 : 1975
Ship by Wed. 19 Nov to Fri. 21 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 0.8408

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23

Reel

BU4248G-TR

Supervisory Circuits CMOS LOW VOLT DETEC

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 : 1973
Ship by Wed. 19 Nov to Fri. 21 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 0.211

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

4.8 V

Bu42

Cut Tape

APX803-44SAG-7

Processor Supervisor 4.38V 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 : 1966
Ship by Wed. 19 Nov to Fri. 21 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 0.1188

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

4 Input

Open Collector / Drain

200 ms

5.5 V

- 40 C

+ 85 C

Apx803

Reel

APX803-46SAG-7

Supervisory Circuits LINEAR REGULATOR VOLT SPVSR,4.63V

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 : 1962
Ship by Wed. 19 Nov to Fri. 21 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 0.1188

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

4 Input

Open Collector / Drain

200 ms

5.5 V

- 40 C

+ 85 C

Apx803

Reel

BD4722G-TR

Supervisory Circuits RESET DETEC VOLT 2.2V

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 : 1958
Ship by Fri. 21 Nov to Thu. 27 Nov

November 2025