Datasheets
MCP121-240E/TO by: Microchip Technology Inc

1-CHANNEL POWER SUPPLY SUPPORT CKT, PBCY3, LEAD FREE, PLASTIC, TO-92, 3 PIN

Part Details for MCP121-240E/TO by Microchip Technology Inc

Results Overview of MCP121-240E/TO by Microchip Technology Inc

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Applications Renewable Energy Automotive

MCP121-240E/TO Information

MCP121-240E/TO by Microchip Technology Inc is a Power Management Circuit.
Power Management Circuits are under the broader part category of Power Circuits.

A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.

Available Datasheets

Part # Manufacturer Description Datasheet
TL505CN Rochester Electronics LLC TL505 - Analog to Digital Converter
TDC1044AR4C Rochester Electronics LLC TDC1044A - ADC, Proprietary Method, 4-Bit, 1 Func, 1 Channel, Parallel, 4 Bits Access, Bipolar, PQCC20
CA3310AM Rochester Electronics LLC CA3310A - ADC, Successive Approximation, 10-Bit, 1 Func, 1 Channel, Parallel, Word Access, CMOS, PDSO24

Price & Stock for MCP121-240E/TO

Part # Distributor Description Stock Price Buy
DISTI # 43J9473
Newark Voltage Detector, 1 Ua, 5.5V, 3-To-92, Reset Threshold Voltage ? Min:-, Reset Threshold Voltage ? Max:-, Reset Threshold Voltage - Nom:2.32V, No. Of Monitored Voltages:1Monitors, Supply Voltage Min:1V, Supply Voltage Max:5.5V, Msl:- Rohs Compliant: Yes |Microchip MCP121-240E/TO RoHS: Compliant Min Qty: 2000 Package Multiple: 1 Date Code: 0 Container: Bulk 0
  • 100 $0.5400
$0.5400 Buy Now
DISTI # MCP121-240E/TO-ND
DigiKey IC SUPERVISOR 1 CHANNEL TO92-3 Min Qty: 1 Lead time: 7 Weeks Container: Bag 1628
In Stock
  • 1 $0.7200
  • 25 $0.6000
  • 100 $0.5400
$0.5400 / $0.7200 Buy Now
DISTI # MCP121-240E/TO
Avnet Americas Volt Supervisor Supply 2.32V 3-Pin TO-92 - Bag (Alt: MCP121-240E/TO) RoHS: Compliant Min Qty: 4000 Package Multiple: 1000 Lead time: 7 Weeks, 0 Days Container: Bag 0
  • 1,000 $0.1849
  • 2,000 $0.1780
  • 4,000 $0.1711
  • 6,000 $0.1642
  • 8,000 $0.1573
$0.1573 / $0.1849 Buy Now
DISTI # 579-MCP121-240E/TO
Mouser Electronics Supervisory Circuits Open Drain Low RoHS: Compliant 591
  • 1 $0.7200
  • 25 $0.6000
  • 100 $0.5400
$0.5400 / $0.7200 Buy Now
DISTI # MCP121-240E/TO
Microchip Technology Inc 1uA Supervisor Open Drain Active Low, TO-92, Projected EOL: 2034-10-01 COO: Philippines ECCN: EAR99 RoHS: Compliant Lead time: 7 Weeks, 0 Days Container: Bag 0

Alternates Available
  • 1 $0.7200
  • 25 $0.6000
  • 100 $0.5400
  • 1,000 $0.4600
  • 5,000 $0.4200
$0.4200 / $0.7200 Buy Now
DISTI # 70388570
RS Microchip MCP121-240E/TO, Voltage Supervisor 2.262 - 2.378 V, 3-Pin TO-92 Min Qty: 1000 Package Multiple: 1 Lead time: 52 Weeks, 0 Days Container: Bulk 0
  • 1,000 $0.6600
  • 10,000 $0.6300
  • 50,000 $0.6000
  • 100,000 $0.5600
$0.5600 / $0.6600 RFQ
Onlinecomponents.com Processor Supervisor 2.32V 1 Active Low/Open Drain 3-Pin TO-92 Bag RoHS: Compliant 0
  • 500 $0.5200
  • 1,000 $0.3900
  • 1,500 $0.3640
  • 2,000 $0.3567
$0.3567 / $0.5200 Buy Now
Bristol Electronics   1000
RFQ
Quest Components   800
  • 1 $1.6800
  • 61 $0.8400
  • 239 $0.6720
$0.6720 / $1.6800 Buy Now
NAC 1uA Supervisor Open Drain Active Low - Package: 3 TO-92 BAG RoHS: Compliant Min Qty: 1000 Package Multiple: 1000 Container: Bag 0
  • 1 $0.4000
  • 100 $0.3600
  • 500 $0.3300
  • 1,000 $0.3300
$0.3300 / $0.4000 Buy Now
DISTI # MCP121-240E/TO
Avnet Silica Volt Supervisor Supply 232V 3Pin TO92 (Alt: MCP121-240E/TO) RoHS: Compliant Min Qty: 1000 Package Multiple: 1000 Lead time: 9 Weeks, 0 Days Silica - 0
Buy Now
DISTI # MCP121-240E/TO
EBV Elektronik Volt Supervisor Supply 232V 3Pin TO92 (Alt: MCP121-240E/TO) RoHS: Compliant Min Qty: 1000 Package Multiple: 1000 Lead time: 8 Weeks, 0 Days EBV - 0
Buy Now
Master Electronics Processor Supervisor 2.32V 1 Active Low/Open Drain 3-Pin TO-92 Bag RoHS: Compliant 0
  • 500 $0.5200
  • 1,000 $0.3900
  • 1,500 $0.3640
  • 2,000 $0.3567
$0.3567 / $0.5200 Buy Now

Part Details for MCP121-240E/TO

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MCP121-240E/TO Part Data Attributes

MCP121-240E/TO Microchip Technology Inc
Buy Now Datasheet
Compare Parts:
MCP121-240E/TO Microchip Technology Inc 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBCY3, LEAD FREE, PLASTIC, TO-92, 3 PIN
Pbfree Code Yes
Rohs Code Yes
Part Life Cycle Code Active
Ihs Manufacturer MICROCHIP TECHNOLOGY INC
Part Package Code TO-92
Pin Count 3
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Factory Lead Time 7 Weeks
Samacsys Manufacturer Microchip
Additional Feature BAT BUP SW:N;MNL RST:N;OV DET:N;PW FL IP:N;PW FL IO:N;PW FL OP:N;PRG RST DLY:N;UV DET:N;WD:N;WWD:N
Adjustable Threshold NO
Analog IC - Other Type VOLTAGE SUPERVISOR/RESET IC
JESD-30 Code O-PBCY-T3
JESD-609 Code e3
Number of Channels 1
Number of Functions 1
Number of Terminals 3
Operating Temperature-Max 125 °C
Operating Temperature-Min -40 °C
Package Body Material PLASTIC/EPOXY
Package Code TO-92
Package Equivalence Code SIP3,.1,50
Package Shape ROUND
Package Style CYLINDRICAL
Qualification Status Not Qualified
Screening Level TS 16949
Supply Current-Max (Isup) 0.02 mA
Supply Voltage-Max (Vsup) 5.5 V
Supply Voltage-Min (Vsup) 1 V
Supply Voltage-Nom (Vsup) 3 V
Surface Mount NO
Temperature Grade AUTOMOTIVE
Terminal Finish Matte Tin (Sn)
Terminal Form THROUGH-HOLE
Terminal Position BOTTOM
Threshold Voltage-Nom +2.32V

Alternate Parts for MCP121-240E/TO

This table gives cross-reference parts and alternative options found for MCP121-240E/TO. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of MCP121-240E/TO, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
MCP121T-240E/LB Microchip Technology Inc $0.3992 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, LEAD FREE, PLASTIC, SC-70, 3 PIN MCP121-240E/TO vs MCP121T-240E/LB
MCP121T-240E/TT Microchip Technology Inc $0.4857 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, LEAD FREE, PLASTIC, TO-236, SOT-23B, 3 PIN MCP121-240E/TO vs MCP121T-240E/TT
MCP121-240E/LB Microchip Technology Inc Check for Price 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, LEAD FREE, PLASTIC, SC-70, 3 PIN MCP121-240E/TO vs MCP121-240E/LB

MCP121-240E/TO Frequently Asked Questions (FAQ)

  • Microchip recommends following a star-grounding layout, keeping the device away from high-current paths, and using a solid ground plane to minimize noise. Additionally, place decoupling capacitors close to the device and use a low-ESR capacitor for the VCC pin.

  • The device requires a power-on reset (POR) to ensure proper initialization. A 10kΩ pull-up resistor on the VCC pin and a 100nF decoupling capacitor between VCC and GND are recommended. Also, ensure the input voltage rises monotonically to avoid false triggering.

  • The maximum allowed voltage on the input pins is VCC + 0.3V. To protect the inputs from overvoltage, use a voltage clamp or a series resistor with a zener diode to limit the voltage to within the specified range.

  • The output of the MCP121-240E/TO is an open-drain configuration. A pull-up resistor is required to define the output voltage. A recommended output stage configuration is a 1kΩ pull-up resistor to a voltage rail (e.g., 3.3V or 5V) and a 100Ω series resistor to limit the output current.

  • The device has a thermal shutdown feature that activates when the junction temperature exceeds 150°C. To prevent overheating, ensure good airflow, use a heat sink if necessary, and avoid high ambient temperatures. Also, follow proper PCB design and layout guidelines to minimize thermal resistance.

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