Commercial · Texas InstrumentsUpdated 2026-10-03
LM317T/NOPB
Adjustable 3-pin positive linear voltage regulator capable of supplying in excess of 1.5 A over a 1.25-V to 37-V output range. The 'T' indicates a TO-220 (through-hole) package. The '/NOPB' indicates RoHS compliant packaging (No Lead).
Part number dissection
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LM317Adjustable 3-pin positive linear voltage regulator capable of supplying in excess of 1.5 A over a 1.25-V to 37-V output range.
T/NOPBThe 'T' indicates a TO-220 (through-hole) package. The '/NOPB' indicates RoHS compliant packaging (No Lead).
Specifications
Base codeAdjustable 3-pin positive linear voltage regulator capable of supplying in excess of 1.5 A over a 1.25-V to 37-V output range.
Finish / variantThe 'T' indicates a TO-220 (through-hole) package. The '/NOPB' indicates RoHS compliant packaging (No Lead).
Acceptable alternates
LM317KCTO-220 package variant of LM317.
LM317KCSTO-220, short shoulder package variant of LM317.
LM317KTERPowerFLEX™ – KTE package variant of LM317.
LM317DCYSOT-223 package variant of LM317.
LM317DCYRSOT-223 package variant of LM317.
KA317Closest direct replacement with same pinout and behavior.
LT317Direct replacement with same pinout and behavior, better dropout.
NTE956General substitute with same pinout and behavior.
LM350Higher current (3A) version with same pinout and adjustment method.
LM338Higher current (5A) version with same pinout and adjustment method.
LT1086Pin-compatible low-dropout alternative.
TL783Handles higher voltages with identical pinout and resistor-divider method.
LM217Adjustable voltage regulator with similar functionality, available in TO-220, TO-220FP, D²PAK and SOT223 packages.
LM317EMPAdditional LM317T equivalent.
LM317AEMPAdditional LM317T equivalent.
LM317LIDRAdditional LM317T equivalent.
LM317LMXAdditional LM317T equivalent.
Confirm acceptability against your drawing before ordering.
Availability
Lead timeQuoted on request
TraceabilityFull documentation with every shipment
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BTEK Components MFG LLC · Largo, FloridaPart data compiled and verified by BTEK's sourcing engine.