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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	Type
	Mounting Style
	Output Voltage
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	Threshold Voltage
	Number of Inputs Monitored
	Output Type
	Manual Reset
	Watchdog
	Watchdog Timers
	Battery Backup Switching
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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

MCP1316T-46LE/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 : 2910
Ship by Tue. 02 Sep to Mon. 08 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 0.4875

Multiples of: 3000

STM6321MWY6F

STMicroelectronics Supervisory Circuits 4.270 to 4.490VRST Watchdog Input

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 : 2910
Ship by Tue. 02 Sep to Mon. 08 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 0.4877

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

2.5 v , 3 v , 3.3 v , 5 v

1 Input

Active High, Active Low, Open Drain, Push - Pull

No Manual Reset

Watchdog

watchdog

No Backup

280 ms

5.5 V

- 40 C

+ 85 C

Stm6321

Reel

TPS3801K33DCKRG4

Supervisory Circuits Processor Sprvisry Circuits

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 : 2910
Ship by Fri. 29 Aug to Tue. 02 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 0.4956

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

200 ms

6 V

- 40 C

+ 85 C

Tps3801k33

Reel

MIC6315-41D4UY-TR

Supervisory Circuits Reset Generator Active Low 4.10V 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 : 2910
Ship by Fri. 29 Aug to Tue. 02 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 0.4968

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 143 - 4

Cut Tape

R3119N055E-TR-FE

Supervisory Circuits 36V Input Voltage Detector with Delay Function or SENSE pin

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 : 2910
Ship by Fri. 29 Aug to Tue. 02 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 0.528

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT23 - 5

5.5 V

1 Input

Cmos, Open Drain

No Manual Reset

no watchdog

No Backup

6 V

- 40 C

+ 105 C

1.5 %

R3119n

Reel

MCP131T-300ELB

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 : 2910
Ship by Fri. 29 Aug to Tue. 02 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 0.5397

Multiples of: 1

Voltage Supervisory

Smd/Smt

SC - 70 - 3

2.93 V

1 Input

No Manual Reset

no watchdog

5.5 V

- 40 C

+ 125 C

Mcp131

Reel

R5106N451A-TR-FE

Supervisory Circuits Microprocessor Supervisory Circuit with Inhibit pin

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 : 2910
Ship by Fri. 29 Aug to Tue. 02 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 0.5506

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 6

4.5 V

1 Input

Cmos, Open Drain

No Manual Reset

watchdog

No Backup

370 ms

6 V

- 40 C

+ 105 C

1 %

R5106n

Cut Tape

BD37B23FVM-CTR

Supervisory Circuits Voltage Detector ICs with Watchdog Timer for Automotive

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 : 2910
Ship by Fri. 29 Aug to Tue. 02 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 0.5938

Multiples of: 1

Voltage Detector

SMD/SMT

MSOP - 8

2.3 V

1 Input

Active High, Open Drain

No Manual Reset

Watchdog

No Backup

6.9 ms

20 V

- 40 C

+ 125 C

BD37B28FVM-CTR

Supervisory Circuits Voltage Detector ICs with Watchdog Timer for Automotive

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 : 2910
Ship by Fri. 29 Aug to Tue. 02 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 0.5938

Multiples of: 1

Voltage Detector

SMD/SMT

MSOP - 8

2.8 V

1 Input

Active High, Open Drain

No Manual Reset

Watchdog

No Backup

6.9 ms

20 V

- 40 C

+ 125 C

BD37B29FVM-CTR

Supervisory Circuits Voltage Detector ICs with Watchdog Timer for Automotive

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 : 2910
Ship by Fri. 29 Aug to Tue. 02 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 0.5938

Multiples of: 1

Voltage Detector

SMD/SMT

MSOP - 8

2.9 V

1 Input

Active High, Open Drain

No Manual Reset

Watchdog

No Backup

6.9 ms

20 V

- 40 C

+ 125 C

BD37B34FVM-CTR

Supervisory Circuits Voltage Detector ICs with Watchdog Timer for Automotive

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 : 2910
Ship by Fri. 29 Aug to Tue. 02 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 0.5938

Multiples of: 1

Voltage Detector

SMD/SMT

MSOP - 8

3.4 V

1 Input

Active High, Open Drain

No Manual Reset

Watchdog

No Backup

6.9 ms

20 V

- 40 C

+ 125 C

BD87B23FVM-CTR

Supervisory Circuits Voltage Detector ICs with Watchdog Timer for Automotive

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 : 2910
Ship by Fri. 29 Aug to Tue. 02 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 0.5938

Multiples of: 1

Voltage Detector

SMD/SMT

MSOP - 8

2.3 V

1 Input

Active Low, Open Drain

No Manual Reset

Watchdog

No Backup

6.9 ms

20 V

- 40 C

+ 125 C

2 %

BD87B34FVM-CTR

Supervisory Circuits Voltage Detector ICs with Watchdog Timer for Automotive

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 : 2910
Ship by Fri. 29 Aug to Tue. 02 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 0.5938

Multiples of: 1

Voltage Detector

SMD/SMT

MSOP - 8

3.4 V

1 Input

Active Low, Open Drain

No Manual Reset

Watchdog

No Backup

6.9 ms

20 V

- 40 C

+ 125 C

BD87B41FVM-CTR

Supervisory Circuits Voltage Detector ICs with Watchdog Timer for Automotive

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 : 2910
Ship by Fri. 29 Aug to Tue. 02 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 0.5938

Multiples of: 1

Voltage Detector

SMD/SMT

MSOP - 8

4.1 V

1 Input

Active Low, Open Drain

No Manual Reset

Watchdog

No Backup

6.9 ms

20 V

- 40 C

+ 125 C

BD87B46FVM-CTR

Supervisory Circuits Voltage Detector ICs with Watchdog Timer for Automotive

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 : 2910
Ship by Fri. 29 Aug to Tue. 02 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 0.5938

Multiples of: 1

Voltage Detector

SMD/SMT

MSOP - 8

4.6 V

1 Input

Active Low, Open Drain

No Manual Reset

Watchdog

No Backup

6.9 ms

20 V

- 40 C

+ 125 C

STM6315RGW13F

Supervisory Circuits Open Drain Microprocessor 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 : 2910
Ship by Tue. 02 Sep to Mon. 08 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 0.6119

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 143 - 4

1 v to 5.5 V

1 Input

Active Low, Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

1680 ms

5.5 V

- 40 C

+ 125 C

1.8 %

Stm6315

Reel

STM6821RWY6F

STMicroelectronics Supervisory Circuits Supervisor

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 : 2910
Ship by Tue. 02 Sep to Mon. 08 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 0.6187

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

2.5 v , 3 v , 3.3 v , 5 v

1 Input

Active High, Push - Pull

Manual Reset

Watchdog

No Backup

280 ms

5.5 V

- 40 C

+ 85 C

Stm6821

Reel

S-1011A70-M6T1U4

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.

ABLIC

Availability : 2910
Ship by Fri. 29 Aug to Tue. 02 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 0.6275

Multiples of: 1

Voltage Detectors

Smd/Smt

SOT - 23 - 6

7 V

1 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

10 ms

36 V

- 40 C

+ 85 C

1.5 %

S - 1011

Cut Tape

MIC2775-44YM5-TR

Supervisory Circuits Single Voltage Supervisor with Dual Active-High and Low Push-Pull Outputs, Manua

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. 29 Aug to Tue. 02 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 0.6435

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23

Mic2775

Reel

S-1011GA0-M6T1U4

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.

ABLIC

Availability : 2910
Ship by Fri. 29 Aug to Tue. 02 Sep

September 2025