ProjectsPricingInsights

Best Alternatives to LM317MDT

Package: TO-252-3, DPak (2 Leads + Tab), SC-63UMWVoltage Regulators - LinearSeries: -Package: Tape & Reel (TR) Cut Tape (CT) Digi-Reel®Voltage - Input (Max): 40VVoltage - Output (Min/Fixed): 1.2VVoltage - Output (Max): 37V

LM317MDT is an adjustable TO-252 positive linear regulator. The reviewed set contains no proven pin-compatible replacement.

AI replacement insight

Electrical riskhigh

output mode and Vin must match

Package riskmedium

TO-252 alone is not enough

Firmware risklow

analog regulator

Sourcing riskmedium

lifecycle data limited

Can it be replaced directly?

No pin-compatible replacement is proven from these candidates.

Best replacement path

Search for an LM317 adjustable TO-252 regulator with verified pinout.

Main risk

Fixed-output or MOSFET/TRIAC parts cannot replace LM317MDT directly.

Recommended alternatives

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Alternative comparison matrix

Feature / factorLM317MDTPJ7812TEAlt 2Alt 3Compatibility / risk
PackageTO-252TO-252TO-252 — same package name
PinoutLM317 3-pin3-pin3-pin — functions not shown
Voltage1.2-37V adj, 40Vin12V fixed, 35Vin12V fixed, 35Vin — not adjustable
Current1.5A1.5A1.5A — same stated current
Temperature0 to 125C-40 to 125C-40 to 125C — wider low temp

Application & sourcing insights

Questions & answers

Use another adjustable LM317 TO-252 regulator with verified pinout and equal or better ratings.