PACKAGE REFERENCESOT-223-4Confirm case, pinout and ordering suffix before purchase.

MANUFACTURER PART RECORD

LM317DCY

Texas Instruments

1.5 A adjustable linear regulator in SOT-223, tube packaging.

Power ManagementAdjustable linear regulatorSOT-223-4

Add to RFQ

MPN: LM317DCY
Manufacturer: Texas Instruments
Family: Adjustable linear regulator
Package: SOT-223-4
Manufacturer channel coverage: Checked by RFQ
Data last checked: Commercial check required
Lifecycle: Active

PROCUREMENT DATA

Identity and sourcing requirements.

Manufacturer part number: LM317DCY
Manufacturer: Texas Instruments
Product family: Adjustable linear regulator
Category: Power Management
Package reference: SOT-223-4
Manufacturer-channel report: Confirmed on request
Sourceics price status: Quoted for required quantity
Sourceics sourcing status: Supplier and stock verified during RFQ
Required order checks: Suffix, package, date code, lot, source and traceability

MANUFACTURER DATA REVIEW

Key technical specifications

Ordering-code highlights reviewed against official manufacturer documentation.

Regulator type: Adjustable positive linear regulator
Input voltage: Up to 40 V
Adjustable output: 1.25 V to 37 V
Maximum output current: 1.5 A
Protection: Current limit and thermal overload
Package: SOT-223-4

Source: Texas Instruments product data · Reviewed 2026-09-29

ORDER-CODE COMPARISON

Same series, different order codes.

LM317 is available in the following manufacturer order codes. They share the same Adjustable linear regulator design; the table highlights package, packing and ordering differences. Quote the exact code your BOM needs.

Order code	Package	Packing	Key difference
LM317DCY	SOT-223-4	Tube	SOT-223, tube
LM317DCYR	SOT-223-4	Tape and reel	SOT-223, tape and reel
LM317T/NOPB	TO-220-3	—	TO-220 through-hole package

QUOTE WORKFLOW

Four checks before a commercial offer.

Identity

Exact MPN, manufacturer and suffix

Supply

Supplier type, quantity and freshness

Evidence

Lot, labels, photos and documents

Terms

Price, lead time, payment and shipping

RELATED REFERENCES

Explore more Power Management records

Browse existing catalog records — same series first, then the same category and manufacturer. These are not confirmed replacements; compatibility requires engineering review.