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Power Circuits / Linear Regulator ICs / LM2940T-12.0/NOPB
Datasheets
LM2940T-12.0/NOPB by:
National Semiconductor Corporation
National Semiconductor Corporation
Rochester Electronics LLC
Texas Instruments
Not Found

IC VREG 12 V FIXED POSITIVE LDO REGULATOR, 1 V DROPOUT, PSFM3, PLASTIC, TO-220, 3 PIN, Fixed Positive Single Output LDO Regulator

Part Details for LM2940T-12.0/NOPB by National Semiconductor Corporation

Results Overview of LM2940T-12.0/NOPB by National Semiconductor Corporation

Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.

LM2940T-12.0/NOPB Information

LM2940T-12.0/NOPB by National Semiconductor Corporation is a Linear Regulator IC.
Linear Regulator ICs 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
DS96174CN/NOPB Rochester Electronics LLC DS96174 - Line Driver, 4 Func, 4 Driver, BIPolar, PDIP16
LM611IM/NOPB Rochester Electronics LLC LM611IM - Operational Amplifier, 7000uV Offset-Max, BIPolar
LM2940T-5.0/NOPB Texas Instruments 1A Low Dropout Regulator 3-TO-220 -40 to 125

Price & Stock for LM2940T-12.0/NOPB

Part # Distributor Description Stock Price Buy
Bristol Electronics   220
RFQ
Rochester Electronics LM2940-N 1A Low Dropout Regulator RoHS: Compliant Status: Active Min Qty: 1 7
  • 1 $0.8875
  • 25 $0.8697
  • 100 $0.8342
  • 500 $0.7987
  • 1,000 $0.7544
$0.7544 / $0.8875 Buy Now

Part Details for LM2940T-12.0/NOPB

LM2940T-12.0/NOPB CAD Models

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LM2940T-12.0/NOPB Part Data Attributes

Parametric Data
LM2940T-12.0/NOPB National Semiconductor Corporation
Buy Now Datasheet
Compare Parts:
LM2940T-12.0/NOPB National Semiconductor Corporation IC VREG 12 V FIXED POSITIVE LDO REGULATOR, 1 V DROPOUT, PSFM3, PLASTIC, TO-220, 3 PIN, Fixed Positive Single Output LDO Regulator
Select a part to compare:
Rohs Code Yes
Part Life Cycle Code Transferred
Ihs Manufacturer NATIONAL SEMICONDUCTOR CORP
Package Description PLASTIC, TO-220, 3 PIN
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Adjustability FIXED
Dropout Voltage1-Max 1 V
Dropout Voltage1-Nom 0.5 V
Input Voltage Absolute-Max 60 V
Input Voltage-Max 26 V
Input Voltage-Min 13.6 V
JESD-30 Code R-PSFM-T3
JESD-609 Code e3
Line Regulation-Max 0.12%
Load Regulation-Max 0.2%
Moisture Sensitivity Level 1
Number of Functions 1
Number of Outputs 1
Number of Terminals 3
Operating Temperature TJ-Max 125 °C
Operating Temperature TJ-Min -40 °C
Output Current1-Max 1 A
Output Voltage1-Max 12.6 V
Output Voltage1-Min 11.4 V
Output Voltage1-Nom 12 V
Package Body Material PLASTIC/EPOXY
Package Code SFM
Package Equivalence Code SIP3,.1TB
Package Shape RECTANGULAR
Package Style FLANGE MOUNT
Packing Method RAIL
Peak Reflow Temperature (Cel) 260
Qualification Status Not Qualified
Regulator Type FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Surface Mount NO
Technology BIPOLAR
Terminal Finish MATTE TIN
Terminal Form THROUGH-HOLE
Terminal Pitch 2.54 mm
Terminal Position SINGLE
Time@Peak Reflow Temperature-Max (s) 40
Voltage Tolerance-Max 5%

Alternate Parts for LM2940T-12.0/NOPB

This table gives cross-reference parts and alternative options found for LM2940T-12.0/NOPB. 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 LM2940T-12.0/NOPB, 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
LM2940T-12.0 Texas Instruments Check for Price 1-A, 26-V, high-PSRR, low-dropout voltage regulator 3-TO-220 -40 to 125 LM2940T-12.0/NOPB vs LM2940T-12.0
LM2940T-12.0/NOPB Texas Instruments $1.0393 1-A, 26-V, high-PSRR, low-dropout voltage regulator 3-TO-220 -40 to 125 LM2940T-12.0/NOPB vs LM2940T-12.0/NOPB
UPC2412AHF-AZ NEC Electronics Group Check for Price Fixed Positive LDO Regulator, 12V, 1V Dropout, BIPolar, PSFM3, ISOLATED, PLASTIC, TO-220, SIP-3 LM2940T-12.0/NOPB vs UPC2412AHF-AZ
LM2940CT-12/NOPB Texas Instruments $0.9044 1-A, 26-V, high-PSRR, low-dropout voltage regulator 3-TO-220 0 to 125 LM2940T-12.0/NOPB vs LM2940CT-12/NOPB
LM2940CT-12 Texas Instruments Check for Price 1-A, 26-V, high-PSRR, low-dropout voltage regulator 3-TO-220 0 to 125 LM2940T-12.0/NOPB vs LM2940CT-12
Part Number Manufacturer Composite Price Description Compare
LM2940T-12 Texas Instruments Check for Price 12V FIXED POSITIVE LDO REGULATOR, 1V DROPOUT, PSFM3, PLASTIC, TO-220, 3 PIN LM2940T-12.0/NOPB vs LM2940T-12
LM2940CT-12 National Semiconductor Corporation Check for Price IC VREG 12 V FIXED POSITIVE LDO REGULATOR, 1 V DROPOUT, PSFM3, PLASTIC, TO-220, 3 PIN, Fixed Positive Single Output LDO Regulator LM2940T-12.0/NOPB vs LM2940CT-12

LM2940T-12.0/NOPB Related Parts

LM2940T-12.0/NOPB Frequently Asked Questions (FAQ)

  • The maximum input voltage that can be applied to the LM2940T-12.0/NOPB is 26V, but it's recommended to keep it below 20V for reliable operation.

  • The LM2940T-12.0/NOPB has a maximum operating junction temperature of 150°C, but it's recommended to keep it below 125°C for reliable operation. You can use thermal management techniques like heat sinks or thermal interfaces to reduce the junction temperature.

  • To ensure the output voltage is stable and accurate, make sure to use a suitable input capacitor (typically 10uF or higher) and output capacitor (typically 22uF or higher) with low ESR. Also, keep the input and output capacitors close to the device and use a good quality PCB layout.

  • No, the LM2940T-12.0/NOPB is a linear voltage regulator and not suitable for switching regulator applications. It's designed to provide a stable output voltage with low noise and ripple, but it's not efficient for high-current or high-power applications.

  • The power dissipation of the LM2940T-12.0/NOPB can be calculated using the formula: Pd = (Vin - Vout) x Iout, where Vin is the input voltage, Vout is the output voltage, and Iout is the output current. Make sure to consider the thermal resistance of the package and the ambient temperature when calculating the power dissipation.