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

ISL88706IB831Z

Supervisory Circuits RST VTRIP=3 09V 8LD RST VTRIP=3 09V 8LD

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.

Renesas

Availability : 9501
Ship by Fri. 29 Aug to Thu. 04 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 1.6875

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOIC N

2 v to 5.5 V

2 Input

Active Low

Manual Reset

Watchdog

watchdog

Backup

260 ms

5.5 V

- 40 C

+ 85 C

Isl88706

Tube

TPS3824-33DBVR

Supervisory Circuits 2.93V Monitor

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 : 9436
Ship by Wed. 27 Aug to Fri. 29 Aug

August 2025

August 2025
	S	M	T	W	T	F	S
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9
33	10	11	12	13	14	15	16
34	17	18	19	20	21	22	23
35	24	25	26	27	28	29	30
36	31	1	2	3	4	5	6

USD 0.5467

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 5

2.93 V

1 Input

Push - Pull

No Manual Reset

Watchdog

watchdog

No Backup

200 ms

5.5 V

- 40 C

+ 85 C

Tps3824 - 33

Reel

MCP111T-270E/LB

Microchip Technology 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 : 9400
Ship by Wed. 27 Aug to Fri. 29 Aug

August 2025

August 2025
	S	M	T	W	T	F	S
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9
33	10	11	12	13	14	15	16
34	17	18	19	20	21	22	23
35	24	25	26	27	28	29	30
36	31	1	2	3	4	5	6

USD 0.2511

Multiples of: 1

Voltage Supervisory

Smd/Smt

SC - 70 - 3

2.63 V

1 Input

No Manual Reset

no watchdog

5.5 V

- 40 C

+ 125 C

Mcp111

Reel

TPS3808G18DBVT

Supervisory Circuits Programmable-Delay Supervisory

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 : 9366
Ship by Wed. 27 Aug to Fri. 29 Aug

August 2025

August 2025
	S	M	T	W	T	F	S
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9
33	10	11	12	13	14	15	16
34	17	18	19	20	21	22	23
35	24	25	26	27	28	29	30
36	31	1	2	3	4	5	6

USD 0.9911

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 6

1.67 V

1 Input

Active Low, Open Drain

Manual Reset

No Watchdog

no watchdog

No Backup

300 ms

6.5 V

- 40 C

+ 125 C

0.5 %

Tps3808g18

Reel

BD5226NVX-2CTL

Supervisory Circuits NANO ENERGY, 2.6V, ADJUSTABLE

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 : 9278
Ship by Wed. 27 Aug to Fri. 29 Aug

August 2025

August 2025
	S	M	T	W	T	F	S
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9
33	10	11	12	13	14	15	16
34	17	18	19	20	21	22	23
35	24	25	26	27	28	29	30
36	31	1	2	3	4	5	6

USD 0.3823

Multiples of: 1

Voltage Detectors

SMD/SMT

SSON - 4

Open Drain

No Manual Reset

No Watchdog

No Backup

3.1 V

- 40 C

+ 125 C

2.5 %

AEC - Q100

Reel , Cut Tape

SP708SEN-LTR

SP708 Series 2.93 V 200 ms Low Power Microprocessor Supervisory Circuit- NSOIC-8

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 : 9149
Ship by Fri. 12 Sep to Wed. 17 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 0.3226

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOIC - 8 Narrow

2.93 V

1 Input

Active High, Active Low, Push - Pull

Manual Reset

watchdog

No Backup

200 ms

5.5 V

- 40 C

+ 85 C

Sp708

Reel

TCM809SVNB713

Supervisory Circuits Microprocessor 2.93V

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 : 9147
Ship by Wed. 27 Aug to Fri. 29 Aug

August 2025

August 2025
	S	M	T	W	T	F	S
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9
33	10	11	12	13	14	15	16
34	17	18	19	20	21	22	23
35	24	25	26	27	28	29	30
36	31	1	2	3	4	5	6

USD 0.3157

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23B - 3

2.5 V , 3 V , 3.3 V , 5 V

1 Input

Active Low, Push - Pull

No Manual Reset

No Watchdog

no watchdog

No Backup

560 ms

5.5 V

- 40 C

+ 125 C

Tcm809

Reel

NCP803SN438T1G

Supervisory Circuits 4.38V 20mA 3-Pin w/uP Reset N-Channel

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 : 9073
Ship by Wed. 27 Aug to Fri. 29 Aug

August 2025

August 2025
	S	M	T	W	T	F	S
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9
33	10	11	12	13	14	15	16
34	17	18	19	20	21	22	23
35	24	25	26	27	28	29	30
36	31	1	2	3	4	5	6

USD 0.2398

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

1.2 V To 4.9 V

1 Input

Open Collector / Drain

No Manual Reset

No Watchdog

no watchdog

No Backup

460 ms

5.5 V

- 40 C

+ 105 C

Ncp803

Reel

TLV809EA46DBZR

Supervisory Circuits Low-power 3-pin voltage supervisor reset IC with active-low 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 : 9052
Ship by Wed. 27 Aug to Fri. 29 Aug

August 2025

August 2025
	S	M	T	W	T	F	S
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9
33	10	11	12	13	14	15	16
34	17	18	19	20	21	22	23
35	24	25	26	27	28	29	30
36	31	1	2	3	4	5	6

USD 0.0946

Multiples of: 1

Cut Tape

NCP300LSN47T1G

Supervisory Circuits 4.7V Detector w/Reset 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.

ON Semiconductor

Availability : 8983
Ship by Wed. 27 Aug to Fri. 29 Aug

August 2025

August 2025
	S	M	T	W	T	F	S
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9
33	10	11	12	13	14	15	16
34	17	18	19	20	21	22	23
35	24	25	26	27	28	29	30
36	31	1	2	3	4	5	6

USD 0.2068

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 5 TH in (TSOP - 5)

4.7 V

1 Input

Active Low, Cmos

No Manual Reset

No Watchdog

no watchdog

Backup

10 V

- 40 C

+ 125 C

2 %

Ncp300

Reel

TPS3896PDRYR

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 : 8931
Ship by Wed. 27 Aug to Fri. 29 Aug

August 2025

August 2025
	S	M	T	W	T	F	S
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9
33	10	11	12	13	14	15	16
34	17	18	19	20	21	22	23
35	24	25	26	27	28	29	30
36	31	1	2	3	4	5	6

USD 0.4356

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 %

Tps3896

Reel

R3112Q221A-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 : 8839
Ship by Wed. 27 Aug to Fri. 29 Aug

August 2025

August 2025
	S	M	T	W	T	F	S
31	27	28	29	30	31	1	2
32	3	4	5	6	7	8	9
33	10	11	12	13	14	15	16
34	17	18	19	20	21	22	23
35	24	25	26	27	28	29	30
36	31	1	2	3	4	5	6

USD 0.2714

Multiples of: 1

Voltage Detectors

Smd/Smt

SC - 82AB - 4

2.2 V

1 Input

Cmos, Open Drain

No Manual Reset

no watchdog

Backup

6 V

- 40 C

+ 85 C

2 %

R3112q

Reel

MCP100T-300I/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 : 8739
Ship by Fri. 29 Aug to Thu. 04 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 0.2414

Multiples of: 3000

NCV303LSN27T1G

Supervisory Circuits VOLTAGE DETECTOR 2.7V AUT

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 : 8730
Ship by Fri. 29 Aug to Thu. 04 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 0.1513

Multiples of: 3000

Voltage Detectors

Ncv303lsn27t1g

Reel

MIC803-30D2VC3 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 : 8730
Ship by Fri. 29 Aug to Thu. 04 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

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

BU4327F-TR

Supervisory Circuits LOW VOLT 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 : 8730
Ship by Fri. 29 Aug to Thu. 04 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 0.2204

Multiples of: 3000

Voltage Monitors

Smd/Smt

SOF - 4

2.7 V

1 Input

Cmos

No Manual Reset

No Watchdog

no watchdog

No Backup

adjustable

7 V

- 40 C

+ 125 C

1 %

Bu43

Reel

MIC803-26D4VM3-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 : 8730
Ship by Fri. 29 Aug to Thu. 04 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

1 Input

Open Collector / Drain

Manual Reset

No Watchdog

no watchdog

No Backup

15 us

5.5 V

- 40 C

+ 125 C

Mic803

Reel

NCP300HSN18T1G

Supervisory Circuits 1.8V Detector w/Reset High

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 : 8730
Ship by Fri. 29 Aug to Thu. 04 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 0.2336

Multiples of: 1

Voltage Monitors

Smd/Smt

SOT - 23 - 5 TH in (TSOP - 5)

1.8 V

1 Input

Active High, Cmos

No Manual Reset

No Watchdog

no watchdog

Backup

10 V

- 40 C

+ 125 C

2 %

Ncp300

Reel

CAT809TTBI-GT3

Supervisory Circuits Push-pull Act 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.

ON Semiconductor

Availability : 8730
Ship by Fri. 29 Aug to Thu. 04 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 0.2342

Multiples of: 1

Voltage Supervisory

Smd/Smt

SOT - 23 - 3

2.5 V , 3 V , 3.3 V , 5 V

1 Input

Active Low, Push - Pull

No Manual Reset

No Watchdog

no watchdog

No Backup

240 ms

5.5 V

- 40 C

+ 85 C

Cat809

Reel

MCP121T-270E/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 : 8730
Ship by Fri. 29 Aug to Thu. 04 Sep

September 2025