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

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 : 18684
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 0.3377

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

TPS3895PDRYR

Texas Instruments 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 : 4848
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 0.2645

Multiples of: 1

Voltage Supervisory

Smd/Smt

USON - 6

Adj

1 Input

Active High, Push - Pull

Manual Reset

no watchdog

No Backup

190 ms

6.5 V

- 40 C

+ 125 C

1 %

Tps3895

Reel

APX809S-26SR-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 : 4846
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 0.1002

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 3

2.63 V

1 Input

Active Low, Push - Pull

No Manual Reset

no watchdog

No Backup

240 ms

5.5 V

- 40 C

+ 125 C

Apx809s/810S

Cut Tape

TPS3421EGDRYR

Supervisory Circuits Dual Ch Push Button Controller

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 : 4841
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 0.2588

Multiples of: 1

Voltage Supervisory

Smd/Smt

USON - 6

1.6 v to 6.5 V

2 Input

Active Low, Open Drain

Manual Reset

no watchdog

No Backup

6.5 V

- 40 C

+ 125 C

Tps3421eg

Reel

MAX810STRG

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 : 4840
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 0.2393

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

S-80147BLPF-JE8TFU

Supervisory Circuits Volt Detect Built-in Delay 1.3uA Iq

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 : 4839
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 0.4241

Multiples of: 1

Smd/Smt

SNT - 4A - 4

S - 801

Cut Tape

R3111N451A-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 : 4835
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 0.252

Multiples of: 1

Smd/Smt

SOT - 23 - 5

4.5 V

1 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

+ 85 C

R3111n

Reel

S-1009N30I-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 : 4830
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 0.4653

Multiples of: 1

Voltage Detectors

SNT - 4A - 4

S - 1009

Cut Tape

APX803L05-30SA-7

Supervisory Circuits 3.0V 55ms 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 : 4829
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

SP706TEN-LTR

Microprocessor & Microcontroller Supervisors SOIC-8_150mil 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.

MaxLinear

Availability : 4825
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 0.2388

Multiples of: 5

Voltage Supervisory

Smd/Smt

SOIC - 8 Narrow

3.08 V

1 Input

Active Low

Manual Reset

watchdog

No Backup

200 ms

5.5 V

- 40 C

+ 85 C

Sp706

Reel

S-1003NA30I-I6T1U

Supervisory Circuits Manual Reset, Delay 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 : 4811
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 0.4797

Multiples of: 1

Voltage Detectors

SNT - 6A - 6

S - 1003

Cut Tape

MAX809TDBZRG

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 : 4801
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 0.0208

Multiples of: 20

S-1009N28I-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 : 4801
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 0.5004

Multiples of: 1

Voltage Detectors

SNT - 4A - 4

S - 1009

Cut Tape

MIC6315-46D3UY-TR

Supervisory Circuits Reset Generator, Active Low, 4.63V VTH, 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 : 4798
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 0.4562

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 143 - 4

Reel

BD5227G-1TR

Supervisory Circuits 2.7V ADJ DELAY VOLTAGE 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 : 4797
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 0.1271

Multiples of: 1

Voltage Detector

SMD/SMT

SSOP - 5

2.7 V

1 Input

Open Drain

No Manual Reset

No Watchdog

No Backup

7 V

- 40 C

+ 85 C

0.9 %

Reel , Cut Tape

BD45E232G-MTR

Supervisory Circuits VOLT DETECTOR WITH FIXED 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.

ROHM

Availability : 4797
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 0.3362

Multiples of: 1

Voltage Detectors

SMD/SMT

SSOP - 5

2.3 V

1 Input

Open Drain

Manual Reset

No Watchdog

No Backup

200 ms

10 V

- 40 C

+ 105 C

1 %

BD45ExxxG - M

AEC - Q101

Reel , Cut Tape

R3118K251C-TR

Supervisory Circuits Low Voltage Detector with SENSE pin and output delay (output capacitor type)

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 : 4790
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 0.378

Multiples of: 1

Voltage Detectors

Smd/Smt

DFN - PLP - 1212 - 6

2.5 V

1 Input

Cmos

No Manual Reset

no watchdog

Backup

100 ms

6 V

- 40 C

+ 85 C

1.5 %

R3118k

Cut Tape

MCP121T-315E/LB

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 : 4785
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

3.08 V

1 Input

No Manual Reset

no watchdog

5.5 V

- 40 C

+ 125 C

Mcp121

Reel

S-8474AC-I8T1U

Supervisory Circuits Wireless Power Transmitter Control IC

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 : 4778
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 1.8291

Multiples of: 1

Voltage Detector

SMD/SMT

SNT - 8A

1 Input

No Manual Reset

No Watchdog

No Backup

- 40 C

+ 85 C

S - 8474

Reel , Cut Tape

BL8506-40CRM

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.

Belling

Availability : 4772
Ship by Fri. 31 Oct to Thu. 06 Nov

November 2025