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

TPS3802K33DCKR

Supervisory Circuits Ultra Small

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 : 3664
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 0.5478

Multiples of: 1

Voltage Supervisory

Smd/Smt

SC - 70 - 5

1.8 v , 2.5 v , 2.7 v , 3 v , 3.3 v , 5 v , Adj

1 Input

Push - Pull

Manual Reset

No Watchdog

no watchdog

No Backup

380 ms

4 V

- 40 C

+ 85 C

Tps3802k33

Reel

MIC2774N-29YM5-TR

Supervisory Circuits Dual Voltage Supervisor with 0.3V and 2.93V Thresholds, Active-Low Open-Drain 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 : 3663
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 0.7436

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

0.3 V

2 Input

Active Low, Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

5.5 V

- 40 C

+ 85 C

Mic2774

Reel

S-80828CNMC-B8NT2U

Supervisory Circuits 2.8V 1.3uA N-Ch Open

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 : 3653
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 0.4398

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 5

2.8 V

1 Input

No Manual Reset

no watchdog

adjustable

10 V

- 40 C

+ 85 C

2 %

S - 808

Cut Tape

TPS3850H50DRCR

Supervisory Circuits Precision window supervisor for OV & UV monitoring with window watchdog timer & programmable delay 10-VSON -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 : 3652
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 1.0285

Multiples of: 1

Voltage Supervisory

Smd/Smt

VSON - 10

Adj , 1.11 v , 1.15 v , 1.67 v , 1.72 v , 2.79 v , 2.88 v , 3.06 v , 3.16 v , 1.15 v , 4.8 v

1 Input

Active - Low,Open - Drain

No Manual Reset

watchdog

No Backup

programmable

6.5 V

- 40 C

+ 125 C

0.8 %

Tps3850

Cut Tape

TPS3897ADRYR

Supervisory Circuits Sgl Ch,Ultra Small Adj Sup 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.

Texas Instruments

Availability : 3644
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 0.3707

Multiples of: 1

Voltage Supervisory

Smd/Smt

USON - 6

Adj

1 Input

Active High, Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

190 ms

6.5 V

- 40 C

+ 125 C

1 %

Tps3897

Reel

BD49E30G-MTR

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 : 3643
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 0.29

Multiples of: 1

Voltage Detectors

SMD/SMT

SSOP - 5

3 V

1 Input

CMOS

No Manual Reset

No Watchdog

No Backup

100 us

10 V

- 40 C

+ 105 C

1 %

BD49ExxG - M

AEC - Q101

Reel , Cut Tape

TL7705ACDE4

Supervisory Circuits Sngl SVS f/5V System 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 : 3637
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 2.3382

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOIC - 8

4.55 V

1 Input

Active High, Active Low, Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

programmable

18 V

0 C

+ 70 C

Tl7705a

Tube

BU4219G-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 : 3632
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 0.1258

Multiples of: 5

Voltage Monitors

Smd/Smt

SSOP - 5

1.9 V

Bu42

Reel

KP4213ESGA

ESOP-8 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.

KIWI

Availability : 3631
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 0.162

Multiples of: 5

MCP121T-450ELB

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 : 3627
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 0.6584

Multiples of: 1

Voltage Supervisory

Smd/Smt

SC - 70 - 3

4.38 V

1 Input

No Manual Reset

no watchdog

5.5 V

- 40 C

+ 125 C

Mcp121

Reel

BU45K302G-TL

Supervisory Circuits Voltage Detector with Fixed 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.

ROHM

Availability : 3617
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 0.2856

Multiples of: 1

Bu45/Bu46

Reel

S-19213B33A-E8T1U7

Supervisory Circuits AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 500 mA VOLTAGE REGULATOR

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 : 3598
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 1.5203

Multiples of: 1

S - 19213

Reel , Cut Tape

MIC2774N-44YM5-TR

Supervisory Circuits Dual Voltage Supervisor with 0.3V and 4.43V Thresholds, Active-Low Open-Drain Ou

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 : 3579
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 0.7436

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23

Reel

BD4729G-TR

Supervisory Circuits RESET DETEC VOLT 2.9V

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 : 3573
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 0.2541

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 5

2.9 V

1 Input

Open Collectors

No Manual Reset

no watchdog

No Backup

- 40 C

+ 75 C

1 %

Bd47

Reel

BD48E33G-TR

Supervisor Open Drain or Open Collector 1 Channel 5-SSOP

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 : 3572
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 0.1728

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 5

3.3 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

100 us

10 V

- 40 C

+ 105 C

1 %

Cut Tape

APX803-29SRG-7

Supervisory Circuits LINEAR REGULATOR VOLT SPVSR,2.93V

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 : 3566
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 0.1188

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23R - 3

4 Input

Open Collector / Drain

No Manual Reset

no watchdog

No Backup

200 ms

5.5 V

- 40 C

+ 85 C

Apx803

Reel

MC33164P-5G

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 : 3563
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 0.3248

Multiples of: 1

Voltage Supervisory

Through Hole

TO - 92 - 3 (TO - 226)

5 V

1 Input

Open Collector / Drain

No Manual Reset

no watchdog

No Backup

adjustable

10 V

- 40 C

+ 125 C

Mc33164

Bulk

TL7712ACDRE4

Supply Voltage Supervisory 0V to 20V 8-Pin SOIC 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 : 3560
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 0.6675

Multiples of: 1

Tape And Reel

MIC2774L-31YM5-TR

Supervisory Circuits Dual Voltage Supervisor with 0.3V and 3.09V Thresholds, Active-Low Push-Pull Output, 140ms Reset Pulse, Manual 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.

Microchip

Availability : 3383
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 0.7436

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23

Reel

MIC6315-29D3UY-TR

Supervisory Circuits Reset Generator, Active Low, 2.93V 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 : 2910
Ship by Fri. 31 Oct to Thu. 06 Nov

November 2025