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LM317LM-NOPB

LM317LM/NOPB Adjustable Linear Regulator, 100 mA, 8-SOIC

MPNLM317LM/NOPB
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Texas Instruments LM317LM/NOPB adjustable positive voltage regulator, 100 mA output, 1.2V to 37V range, PSRR 80dB~65dB at 120Hz, -40°C to 125°C, 8-SOIC surface mount package.

$1.0600Ref. price · indicative, final on quote
Texas Instruments LM317LM/NOPB datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM317LM/NOPB specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Voltage - input40V
Voltage - output37V
Voltage - output (Min (Fixed))1.2V
Output current100mA
Current - quiescent5 mA
Operating temperature-40°C~125°C
PSRR80dB ~ 65dB (120Hz)
PackageTube
Case8-SOIC (0.154\", 3.90mm Width)
Protection featuresOver Current, Over Temperature, Short Circuit
Number of regulators1
Output configurationPositive

Product details

Adjustable 100 mA regulator in 8-SOIC

The Texas Instruments LM317LM/NOPB is a three-terminal adjustable positive voltage regulator delivering up to 100 mA output current. Output voltage is set by two external resistors from 1.2 V to 37 V, with a maximum input of 40 V. The 8-SOIC surface-mount package suits compact board layouts where the through-hole LM317T cannot fit.

PSRR and noise rejection at 120 Hz

Ripple rejection is specified at 80 dB to 65 dB at 120 Hz, which is the fundamental frequency of full-wave rectified 60 Hz mains. This means the regulator attenuates input ripple by a factor of 10,000 to 1,800 — sufficient for clean analog supply rails in instrumentation or audio circuits where the downstream PSRR of op-amps is limited.

Industrial temperature range and protection

Built-in protection includes over-current, over-temperature, and short-circuit shutdown — no external clamp diodes needed for output short to ground.

The NOPB suffix indicates a lead-free (NiPdAu) finish, RoHS-compliant, and compatible with standard Pb-free reflow profiles.

Frequently asked questions

Where can I buy LM317LM/NOPB with stock available?

Buyers need immediate sourcing options to fill BOM lines or replace failed units.

What is the exact pinout of LM317LM/NOPB?

Design engineers and technicians must verify PCB layout compatibility before purchase.

Is LM317LM/NOPB a drop-in replacement for LM317T?

Sourcing buyers and techs often need to substitute surface-mount for through-hole or vice versa.

What is the current price and lead time for LM317LM/NOPB?

Pricing and lead time directly affect budget and schedule decisions for purchasing.

Does LM317LM/NOPB have any known equivalents or cross-references?

Engineers and brokers need alternatives for second sourcing or lifecycle management.

What is the operating temperature range and thermal requirements for LM317LM/NOPB?

Design validation and reliability analysis depend on these specifications.