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Power Circuits / Linear Regulator ICs / LM340S-12/NOPB
Datasheets
LM340S-12/NOPB by:

1.5-A, 35-V, linear voltage regulator 3-DDPAK/TO-263 0 to 125

Part Details for LM340S-12/NOPB by Texas Instruments

Results Overview of LM340S-12/NOPB by Texas Instruments

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.

LM340S-12/NOPB Information

LM340S-12/NOPB by Texas Instruments 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.

Price & Stock for LM340S-12/NOPB

Part # Distributor Description Stock Price Buy
DISTI # LM340S-12/NOPB-ND
DigiKey IC REG LINEAR 12V 1.5A TO263 Min Qty: 1 Lead time: 18 Weeks Container: Tube Temporarily Out of Stock
  • 1 $1.9800
  • 10 $1.4590
  • 45 $1.2616
  • 135 $1.1618
  • 270 $1.1129
  • 540 $1.0727
  • 1,035 $1.0414
  • 2,520 $1.0070
  • 5,040 $0.9855
$0.9855 / $1.9800 Buy Now
DISTI # 926-LM340S-12/NOPB
Mouser Electronics Linear Voltage Regulators 3-TERMINAL POS REG A 926-LM340SX-12/NOPB RoHS: Compliant 519
  • 1 $1.9800
  • 10 $1.4600
  • 25 $1.2700
  • 90 $1.1600
  • 270 $1.1100
  • 540 $1.0700
  • 1,035 $1.0400
  • 2,520 $0.9890
  • 5,040 $0.9620
$0.9620 / $1.9800 Buy Now
DISTI # V99:2348_07274765
Arrow Electronics Standard Regulator Pos 12V 1.5A 4-Pin(3+Tab) DDPAK Tube Min Qty: 1 Package Multiple: 1 Lead time: 18 Weeks Date Code: 2132 Americas - 64
  • 1 $1.9507
  • 10 $1.4335
  • 25 $1.2345
  • 90 $1.1214
  • 270 $1.0633
  • 540 $1.0149
  • 1,035 $0.9760
  • 2,520 $0.9314
$0.9314 / $1.9507 Buy Now
DISTI # 86005542
Verical Standard Regulator Pos 12V 1.5A 4-Pin(3+Tab) DDPAK Tube Min Qty: 244 Package Multiple: 1 Date Code: 1501 Americas - 335
  • 244 $1.5375
  • 500 $1.3875
  • 1,000 $1.2750
  • 10,000 $1.1373
  • 100,000 $0.9529
$0.9529 / $1.5375 Buy Now
DISTI # 86310880
Verical Standard Regulator Pos 12V 1.5A 4-Pin(3+Tab) DDPAK Tube Min Qty: 7 Package Multiple: 1 Date Code: 2132 Americas - 64
  • 7 $1.9507
  • 10 $1.4335
  • 25 $1.2345
  • 90 $1.1214
  • 270 $1.0633
  • 540 $1.0149
  • 1,035 $0.9760
  • 2,520 $0.9314
$0.9314 / $1.9507 Buy Now
Bristol Electronics   3
RFQ
Rochester Electronics LM340 1.5A, Fixed Output Linear Regulator RoHS: Not Compliant Status: Active Min Qty: 1 545
  • 100 $1.2300
  • 500 $1.1100
  • 1,000 $1.0200
  • 10,000 $0.9098
  • 100,000 $0.7623
$0.7623 / $1.2300 Buy Now
DISTI # LM340S-12/NOPB
TME IC: voltage regulator, linear,fixed, 12V, 1.5A, TO263-3, SMD, tube Min Qty: 1 331
  • 1 $2.0400
  • 10 $1.7500
  • 45 $1.5500
  • 90 $1.4600
  • 450 $1.2400
  • 540 $1.2100
  • 675 $1.1800
  • 1,035 $1.1500
$1.1500 / $2.0400 Buy Now
Vyrian Regulators 5028
RFQ

Part Details for LM340S-12/NOPB

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LM340S-12/NOPB Part Data Attributes

Parametric Data
LM340S-12/NOPB Texas Instruments
Buy Now Datasheet
Compare Parts:
LM340S-12/NOPB Texas Instruments 1.5-A, 35-V, linear voltage regulator 3-DDPAK/TO-263 0 to 125
Pbfree Code Yes
Rohs Code No
Part Life Cycle Code Active
Ihs Manufacturer TEXAS INSTRUMENTS INC
Part Package Code D2PAK
Package Description ROHS COMPLIANT, TO-263, 3 PIN
Pin Count 4
Reach Compliance Code not_compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Date Of Intro 1998-04-01
Samacsys Manufacturer Texas Instruments
Adjustability FIXED
Dropout Voltage1-Nom 2 V
Input Voltage Absolute-Max 35 V
Input Voltage-Max 35 V
Input Voltage-Min 14.5 V
JESD-30 Code R-PSSO-G3
JESD-609 Code e3
Length 10.16 mm
Line Regulation-Max 0.06%
Load Regulation-Max 0.12%
Moisture Sensitivity Level 3
Number of Functions 1
Number of Outputs 1
Number of Terminals 3
Operating Temperature TJ-Max 125 °C
Operating Temperature TJ-Min
Operating Temperature-Max 125 °C
Operating Temperature-Min
Output Current1-Max 1.5 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 TO-263
Package Equivalence Code SIP3H,.55TB
Package Shape RECTANGULAR
Package Style SMALL OUTLINE
Packing Method TUBE
Peak Reflow Temperature (Cel) 245
Qualification Status Not Qualified
Regulator Type FIXED POSITIVE SINGLE OUTPUT STANDARD REGULATOR
Seated Height-Max 4.83 mm
Surface Mount YES
Technology BIPOLAR
Terminal Finish Matte Tin (Sn)
Terminal Form GULL WING
Terminal Pitch 2.54 mm
Terminal Position SINGLE
Time@Peak Reflow Temperature-Max (s) 30
Voltage Tolerance-Max 5%
Width 8.6 mm

Alternate Parts for LM340S-12/NOPB

This table gives cross-reference parts and alternative options found for LM340S-12/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 LM340S-12/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
LM340S-12 Texas Instruments Check for Price 12V FIXED POSITIVE REGULATOR, PSSO3, TO-263, 3 PIN LM340S-12/NOPB vs LM340S-12
LM340S-12 Rochester Electronics LLC Check for Price 12V FIXED POSITIVE REGULATOR, PSSO3, TO-263, 3 PIN LM340S-12/NOPB vs LM340S-12
LM340S-12 National Semiconductor Corporation Check for Price IC VREG 12 V FIXED POSITIVE REGULATOR, PSSO3, TO-263, 3 PIN, Fixed Positive Single Output Standard Regulator LM340S-12/NOPB vs LM340S-12
LM340SX-12/NOPB National Semiconductor Corporation Check for Price IC VREG 12 V FIXED POSITIVE REGULATOR, PSSO3, ROHS COMPLIANT, TO-263, 3 PIN, Fixed Positive Single Output Standard Regulator LM340S-12/NOPB vs LM340SX-12/NOPB
LM340SX-12 Texas Instruments Check for Price 12V FIXED POSITIVE REGULATOR, PSSO3, TO-263, 3 PIN LM340S-12/NOPB vs LM340SX-12
LM340S-12/NOPB National Semiconductor Corporation Check for Price IC VREG 12 V FIXED POSITIVE REGULATOR, PSSO3, ROHS COMPLIANT, TO-263, 3 PIN, Fixed Positive Single Output Standard Regulator LM340S-12/NOPB vs LM340S-12/NOPB
Part Number Manufacturer Composite Price Description Compare
MC7812CDTG onsemi $0.2952 Linear Voltage Regulator, 1 A, 5 to 24 V, Positive Vout: 12.0 V; TJ = 0°C to +125°C, DPAK (SINGLE GAUGE) TO-252, 75-TUBE LM340S-12/NOPB vs MC7812CDTG
MC7812BD2TG onsemi $0.4942 Linear Voltage Regulator, 1 A, 5 to 24 V, Positive Vout: 12.0 V; TJ = -40°C to +125°C, 3 LEAD D2PAK, 50-TUBE LM340S-12/NOPB vs MC7812BD2TG
UA7812QKTE Texas Instruments Check for Price 12V FIXED POSITIVE REGULATOR, PSSO3, PLASTIC, PFM-3 LM340S-12/NOPB vs UA7812QKTE
MC7812CDT onsemi Check for Price 12V FIXED POSITIVE REGULATOR, PSSO2, PLASTIC, DPAK-3 LM340S-12/NOPB vs MC7812CDT
MC7812CDT Fairchild Semiconductor Corporation Check for Price Fixed Positive Standard Regulator, 12VBIPolar, PSSO2, DPAK-3 LM340S-12/NOPB vs MC7812CDT
MC7812BD2TR4 onsemi Check for Price 12V FIXED POSITIVE REGULATOR, PSSO2, D2PAK-3 LM340S-12/NOPB vs MC7812BD2TR4
MC7812ACD2TR4 onsemi Check for Price 12V FIXED POSITIVE REGULATOR, PSSO2, D2PAK-3 LM340S-12/NOPB vs MC7812ACD2TR4
MC7812BD2T onsemi Check for Price 12V FIXED POSITIVE REGULATOR, PSSO2, D2PAK-3 LM340S-12/NOPB vs MC7812BD2T
MC7812BDT/RK onsemi Check for Price 12V FIXED POSITIVE REGULATOR, PSSO2, PLASTIC, DPAK-3 LM340S-12/NOPB vs MC7812BDT/RK
MC7812ECDTXM Fairchild Semiconductor Corporation Check for Price Fixed Positive Standard Regulator, 12VBIPolar, PSSO2, LEAD FREE, TO-252, DPAK-3 LM340S-12/NOPB vs MC7812ECDTXM

LM340S-12/NOPB Related Parts

LM340S-12/NOPB Frequently Asked Questions (FAQ)

  • The maximum input voltage is 35V, but it's recommended to keep it below 25V for reliable operation.

  • The LM340S-12/NOPB is rated for operation up to 125°C, but thermal derating is required above 85°C. Ensure proper heat sinking and thermal management to prevent overheating.

  • Use a high-quality output capacitor with a minimum value of 10uF, and ensure the input capacitor is at least 1uF. Also, keep the input and output capacitors close to the regulator to minimize noise and oscillation.

  • No, the LM340S-12/NOPB is a linear voltage regulator, not a switching regulator. It's designed for low-dropout, low-noise applications, not high-frequency switching.

  • The minimum input voltage is 14.5V, but it's recommended to keep the input voltage at least 2V above the output voltage (12V) for stable operation.

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