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
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	Output Voltage
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	Number of Inputs Monitored
	Output Type
	Manual Reset
	Watchdog
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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

MCP102T-195I/TT

Supervisory Circuits Push-Pull 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 : 5213
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 0.3864

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

1.9 V

1 Input

Push - Pull

No Manual Reset

No Watchdog

no watchdog

No Backup

120 ms

5.5 V

- 40 C

+ 85 C

Mcp102

Reel

BD48K30G-TL

ROHM Semiconductor Supervisory Circuits Volt Sup Det 2.3-6V

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 : 5205
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 0.1496

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 3

3 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

6 V

- 40 C

+ 105 C

1 %

Bd48

Reel

MCP1321T-29FE/OT

Supervisory Circuits Active low Open-drain + Active high P-P, WDI (WDI = 102ms, reset delay = 30ms, Vtrpd - 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.

Microchip

Availability : 5184
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 0.8542

Multiples of: 1

SOT - 23 - 5

Mcp1321

Cut Tape

APX809S00-26SA-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 : 5173
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 0.1034

Multiples of: 1

Cut Tape

MIC803-44D2VM3-TR

Supervisory Circuits 3-Pin Microprocessor Supervisor Circuit w/ Open-Drain Reset 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 : 5160
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 0.2585

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

1 Input

Open Collector / Drain

Manual Reset

No Watchdog

no watchdog

No Backup

15 us

5.5 V

- 40 C

+ 125 C

Mic803

Reel

BD4746G-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 : 5146
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 0.2602

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 5

4.6 V

1 Input

Open Collectors

No Manual Reset

No Watchdog

no watchdog

No Backup

0.85 V

- 40 C

+ 75 C

1 %

Bd47

Reel

BD45265G-TR

Supervisory Circuits RESET 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 : 5099
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

2.6 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Bd45

Reel

APX803S00-23SA-7

Supervisory Circuits 2.25V, 1.7ms MPU Reset 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.

Diodes Incorporated

Availability : 5076
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 0.1034

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 3

2.25 V

1 Input

Active Low, Open Drain

No Manual Reset

no watchdog

No Backup

1.7 ms

5.5 V

- 40 C

+ 85 C

Apx803s

Cut Tape

TPS3840DL30DBVRQ1

Supervisory Circuits Automotive high-input voltage supervisor with manual reset and programmable-reset time delay 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 : 5069
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 0.5208

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

3 V

1 Input

Active Low, Open Drain

Manual Reset

no watchdog

Backup

619 ms

10 V

- 40 C

+ 125 C

1 %

Tps3840

Aec - Q100

Cut Tape

BU4827F-TR

ROHM Semiconductor Supervisory Circuits VOLT DETECT .9V-4.8V 4-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.

ROHM

Availability : 5055
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 0.222

Multiples of: 1

Voltage Detectors

Smd/Smt

SOP - 4

2.7 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu4827f

Reel

MIC6315-30D2UY-TR

Supervisory Circuits Reset Generator, Active Low, 3.00V VTH, Manual Reset, SOT-143

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 : 5044
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 0.4322

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 143 - 4

Reel

MCP111-450E/TO

Supervisory Circuits Open Drain

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 : 5034
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 0.3742

Multiples of: 1

Voltage Supervisory

Through Hole

TO - 92 - 3

4.38 V

1 Input

Active Low, Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

5.5 V

- 40 C

+ 125 C

Mcp111

Bulk

SP809NEK-L-3-1/TR

SP809 Series 3.1V 140ms Low Power Microprocessor Supervisory Circuit - SOT-23-3

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 : 5032
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 0.2002

Multiples of: 1

Voltage Supervisory

Tape And Reel

MIC803-26D2VC3 TR

Supervisory Circuits 3-Pin Microprocessor Supervisor Circuit w/ Open-Drain Reset 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 : 5017
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 0.2999

Multiples of: 1

Voltage Supervisory

Smd/Smt

SC - 70 - 3

1 Input

Open Collector / Drain

Manual Reset

No Watchdog

No Backup

15 us

5.5 V

- 40 C

+ 125 C

Mic803

Reel

TLV810EA29DBZR

Supervisory Circuits Low-power 3-pin voltage supervisor reset IC with active-high push-pull 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 : 5000
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 0.1661

Multiples of: 1

Cut Tape

APX825A-31W6G-7

Supervisory Circuits 1.1V-5.5V 3.08V 20mA

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 : 4993
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 0.1683

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 26 - 6

3.08 V

1 Input

Active High, Active Low

Manual Reset

Watchdog

watchdog

No Backup

280 ms

5.5 V

- 40 C

+ 85 C

Apx825a

Reel

APX803L-37SA-7

Supervisory Circuits 3.7V 0ms 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 : 4989
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 0.1034

Multiples of: 1

Cut Tape

MCP1319MT-26EE/OT

Supervisory Circuits Active low Open-drain with internal 4.7k pullup + Active high P-P, MR (Reset delay = 30ms, Vtrpd - 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.

Microchip

Availability : 4978
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 0.7668

Multiples of: 1

SOT - 23 - 5

Mcp1319

Reel

MIC6315-29D4UY TR

Supervisory Circuits Reset Generator, Active Low,4.63V VTH, Manual Reset, SOT-144 - 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 : 4965
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 0.4015

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 143 - 4

3 V , 3.3 V , 5 V

1 Input

Active Low, Open Drain

Manual Reset

No Watchdog

No Backup

0.5 us

5.5 V

- 40 C

+ 85 C

Mic6315

Reel

MCP809T-300I/TT

Supervisor Push-Pull, Totem Pole 1 Channel SOT-23-3

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 : 925
Ship by Mon. 01 Sep to Fri. 05 Sep

September 2025