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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	Number of Inputs Monitored
	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

BD52E45G-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 : 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 0.2059

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 5

4.5 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

adjustable

10 V

- 40 C

+ 105 C

1 %

Bd52(53)Exxg

Cut Tape

UM813SS

SOP8 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.

Union

Availability : 2910
Ship by Tue. 16 Sep to Fri. 19 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 0.2063

Multiples of: 5

MIC803-30D3VM3 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 : 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 0.2087

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

1 Input

Open Collector / Drain

Manual Reset

No Watchdog

No Backup

15 us

5.5 V

- 40 C

+ 125 C

Mic803

Reel

MIC803-46D3VC3-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 : 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 0.2125

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SC - 70 - 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

BD53E30G-TR

Supervisor Push-Pull, Totem Pole 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 : 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 0.2148

Multiples of: 1

Voltage Detectors

Smd/Smt

SSOP - 5

3 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

adjustable

10 V

- 40 C

+ 105 C

1 %

Bd52(53)Exxg

Cut Tape

BD4928FVE-TR

Supervisory Circuits CMOS DETEC VOLT 3.1V

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 0.2178

Multiples of: 1

Voltage Monitors

Smd/Smt

VSOF - 5

2.8 V

1 Input

Cmos

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Bd49

Cut Tape

MIC803-31D2VM3 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 : 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 0.218

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

1 Input

Open Collector / Drain

Manual Reset

No Watchdog

No Backup

15 us

5.5 V

- 40 C

+ 125 C

Mic803

Reel

MIC803-40D3VM3-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 : 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 0.218

Multiples of: 3000

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

BD4826FVE-TR

Supervisory Circuits CMOS 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 : 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 0.2203

Multiples of: 1

Voltage Monitors

Smd/Smt

VSOF - 5

2.6 V

1 Input

Open Drain

No Manual Reset

no watchdog

No Backup

- 40 C

+ 105 C

1 %

Bd48

Cut Tape

STM1001TWX6F

Supervisory Circuits 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.

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 0.2213

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

3 V , 3.3 V , 5 V

1 Input

Open Collector / Drain

Manual Reset

No Watchdog

No Backup

280 ms

7 V

- 40 C

+ 85 C

Stm1001

Reel

STM1061N26WX6F

Supervisory Circuits 2.6V Active Lo Open Drain 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.

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 0.2225

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

2.6 V

1 Input

Active Low, Open Drain

No Manual Reset

No Watchdog

No Backup

6 V

- 40 C

+ 85 C

Stm1061

Reel

MCP100T-315I/TT

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 0.2225

Multiples of: 3000

3.075 V

R3112Q271C-TR-FE

Supervisory Circuits Low Voltage Detector w/output 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.

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 0.224

Multiples of: 1

Voltage Detectors

Smd/Smt

SC - 82AB - 4

2.7 V

1 Input

Cmos

No Manual Reset

no watchdog

Backup

6 V

- 40 C

+ 85 C

2 %

R3112q

Cut Tape

MIC803-29D2VC3-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 : 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 0.2262

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SC - 70 - 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

MCP100T-485I/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 : 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 0.2275

Multiples of: 3000

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

3 v , 3.3 v , 5 V

1 Input

Active Low, Push - Pull

No Manual Reset

No Watchdog

no watchdog

No Backup

350 ms

5.5 V

- 40 C

+ 85 C

Mcp100

Reel

BD48K42G-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 : 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 0.2288

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 3

4.2 V

1 Input

6 V

- 40 C

+ 105 C

1 %

Bd48

Reel

BD4851G-TR

Supervisory Circuits CMOS DETEC VOLT 5.1V

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 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 0.2288

Multiples of: 1

Voltage Monitors

Smd/Smt

SSOP - 5

5.1 V

1 Input

Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

10 V

- 40 C

+ 105 C

1 %

Bd48

Reel

BU4830FVE-TR

Supervisory Circuits IC CMOS VOLT 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 : 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 0.2303

Multiples of: 1

Voltage Monitors

Smd/Smt

VSOF - 5

3 V

1 Input

Open Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

7 V

- 40 C

+ 125 C

1 %

Bu48

Reel

R3111Q331C-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 : 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 0.2311

Multiples of: 1

Voltage Supervisory

Smd/Smt

SC - 82AB - 4

3.3 V

1 Input

Cmos

No Manual Reset

no watchdog

Backup

10 V

- 40 C

+ 85 C

2 %

R3111q

Cut Tape

MIC803-44D4VC3-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 : 2910
Ship by Tue. 02 Sep to Mon. 08 Sep

September 2025