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

S-1009N35I-N4T1U

Supervisory Circuits VOLTAGE DETECTOR ULTRA LOW 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 : 3007
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

SC - 82AB - 4

S - 1009

Cut Tape

R3154N204A-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 : 3007
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 1.7204

Multiples of: 1

Voltage Detectors

SMD/SMT

SOT - 23 - 6

1.33 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

APX803L-29C3-7

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 : 3003
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 0.1254

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 323 - 3

2.9 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

R3154N203A-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 : 3002
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 1.7204

Multiples of: 1

Voltage Detectors

SMD/SMT

SOT - 23 - 6

3.54 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

S-80127BNMC-JGMT2G

Processor Supervisor 2.7V 1 Active Low/Open Drain 5-Pin SOT-23

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 : 2994
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 0.4506

Multiples of: 3000

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 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 0.8195

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

BU4246G-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 : 2976
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 0.1925

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

4.6 V

1 Input

Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

7 V

- 40 C

+ 125 C

1 %

Bu42

Reel

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 : 2969
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 0.1914

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

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 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 1.1812

Multiples of: 1

Cut Tape

STM6315SDW13F

Supervisory Circuits Supervisor 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.

STMicroelectronics

Availability : 2962
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 0.239

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 143 - 4

1 v to 5.5 V

1 Input

Push - Pull

Manual Reset

No Watchdog

no watchdog

No Backup

210 ms

7 V

- 40 C

+ 125 C

1.8 %

Stm6315

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 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 0.2714

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

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 : 2958
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 0.1761

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 : 2958
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 0.2437

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

2.6 V

1 Input

Cmos

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

10 V

- 40 C

+ 105 C

1 %

Bd53

Reel

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 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 1.7204

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

BD45402G-TR

ROHM Semiconductor Supervisory Circuits RESET DETEC VOLT 4.0V

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 : 2950
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 0.2231

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

4 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Bd45

Reel

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 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 0.3036

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 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 0.2664

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 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 0.0419

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 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 0.0198

Multiples of: 20

STM6519APBBUB6F

Supervisory Circuits Smart Reset 4-Pin 2V to 5.5V 1uA 0.5s

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 : 740
Ship by Mon. 01 Sep to Fri. 05 Sep

September 2025