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ProductsPower ManagementLD1086V33-DG
PACKAGE REFERENCETO-220Confirm case, pinout and ordering suffix before purchase.
MANUFACTURER PART RECORD

LD1086V33-DG

STMicroelectronics

LD1086V33-DG is an STMicroelectronics fixed 3.3 V 1.5 A low-dropout regulator in TO-220 — fixed 3.3 V output (±2% full range), 1.5 A guaranteed output, 1.3 V typical dropout at 1.5 A, 79 dB PSRR at 120 Hz, over-current and thermal protection, tube packing (DG), -40 to +125 °C. The fixed 3.3 V output is the selection point: no external divider resistors needed — the TO-220 mounting tab handles full 1.5 A with a bolt-on heatsink for 3.3 V rails. Selection advice: the V33 code is the fixed 3.3 V TO-220 version — the adjustable V-DG code needs an external divider, and D2TTR/DTTR are surface-mount codes, so match the full LD1086V33-DG code for output type, package and packing. DG indicates tube packing, not reel. Evidence: ST LD1086 datasheet (Doc ID 6739) and DigiKey listings confirm fixed 3.3 V, 1.5 A, TO-220 and tube packing, Active status. Match the full LD1086V33-DG code. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

Power ManagementLD1086TO-220
Add to RFQ
MPN
LD1086V33-DG
Manufacturer
STMicroelectronics
Family
LD1086
Package
TO-220
Manufacturer channel coverage
Checked by RFQ
Data last checked
Commercial check required
Lifecycle
Active
PROCUREMENT DATA

Identity and sourcing requirements.

Manufacturer part number
LD1086V33-DG
Manufacturer
STMicroelectronics
Product family
LD1086
Category
Power Management
Package reference
TO-220
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.

Output configuration
3.3 V
Output current class
1.5 A
Package
TO-220
Order code
LD1086V33-DG
Family
LD1086
Operating temperature
-40.0 to 125.0 °C
Source: STMicroelectronics product data · Reviewed 2026-09-29
ORDER-CODE COMPARISON

Same series, different order codes.

LD1086 is available in the following manufacturer order codes. They share the same LD1086 design; the table highlights package, packing and ordering differences. Quote the exact code your BOM needs.

Order codePackagePackingKey difference
LD1086BDTTRDPAK—Compared with LD1086DT33TR, this code specifies adjustable output and DPAK packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review.
LD1086BV-DGTO-220—Compared with LD1086DT33TR, this code specifies adjustable output and TO-220 packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review.
LD1086D2M33TRD2PAK—Compared with LD1086DT33TR, this code specifies 3.3 V output and D2PAK packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review.
LD1086D2MTRD2PAK—Compared with LD1086DT33TR, this code specifies adjustable output and D2PAK packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review.
LD1086D2T33TRD2PAKTape and reelFixed 3.3 V output
LD1086D2TTRD2PAK—Compared with LD1086DT33TR, this code specifies adjustable output and D2PAK packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review.
LD1086DT33TRTO-252——
LD1086DT50TRDPAKTape and reelFixed 5.0 V output
LD1086DTTRDPAK—Compared with LD1086DT33TR, this code specifies adjustable output and DPAK packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review.
LD1086PURDFN8 4x4—Compared with LD1086DT33TR, this code specifies adjustable output and DFN8 4x4 packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review.
LD1086V-DGTO-220—Compared with LD1086DT33TR, this code specifies adjustable output and TO-220 packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review.
LD1086V33-DGTO-220—Compared with LD1086DT33TR, this code specifies 3.3 V output and TO-220 packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review.
SELECTION GUIDANCE

LD1086V33-DG selection guidance

LD1086V33-DG is a LD1086 from STMicroelectronics, orderable in the TO-220 package. The ordering code fixes the exact configuration you receive — package, grade and packing — so procurement starts with matching this code character-for-character against your BOM, not just the base series name.

Within the same series, also consider: LD1086BDTTR — package DPAK; Compared with LD1086DT33TR, this code specifies adjustable output and DPAK packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review. · LD1086BV-DG — Compared with LD1086DT33TR, this code specifies adjustable output and TO-220 packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review. · LD1086D2M33TR — package D2PAK; Compared with LD1086DT33TR, this code specifies 3.3 V output and D2PAK packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review. · LD1086D2MTR — package D2PAK; Compared with LD1086DT33TR, this code specifies adjustable output and D2PAK packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review.. These variants share the core design; pick the code whose package and packing match your assembly process and reel requirements. If your BOM lists one of these instead of LD1086V33-DG, do not substitute without checking the exact ordering code — even one suffix character can change the device you receive.

When you request a quote, include the full ordering code, the target packing format (reel, tube, tray or cut tape), your quantity and any date-code or lot requirements. We reconfirm manufacturer, suffix, package, date code and traceability against the actual offered lot before any commercial quote is issued, and every RFQ gets a reply within 24 hours.

QUOTE WORKFLOW

Four checks before a commercial offer.

01

Identity

Exact MPN, manufacturer and suffix

02

Supply

Supplier type, quantity and freshness

03

Evidence

Lot, labels, photos and documents

04

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.

LD1086BV-DGSTMicroelectronicsLD1086 · TO-220

LD1086BV-DG is an STMicroelectronics LD1086 adjustable 1.5 A low-dropout regulator in TO-220 — 1.25 to 28.5 V output set by two resistors, up to 30 V input, typical dropout 1.3 V at 1.5 A, ±1% tolerance at 25 °C, tube packing (DG suffix), -40 to +125 °C. The TO-220 through-hole package is the selection point: the best thermal path of the LD1086 family for high-dissipation rails, with a heatsink mounting hole and pin-to-pin compatibility with older 3-terminal adjustable regulators per ST. Selection advice: this is the adjustable version — confirm the feedback divider in your BOM, and note the automotive grade is the separate Y-suffix code, not this catalog -DG code. Only a 10 µF minimum output capacitor is needed for stability, and overcurrent plus thermal limits are built in. For surface-mount assembly choose the DPAK (BDTTR) or D2PAK variants instead. Evidence: ST LD1086 datasheet order-code table and distributor listings confirm adjustable, 1.5 A, TO-220, tube packing. Match the full LD1086BV-DG code for output type, package and packing. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

LD1086V-DGSTMicroelectronicsLD1086 · TO-220

LD1086V-DG is an STMicroelectronics adjustable 1.5 A low-dropout regulator in TO-220 — 1.25 V to 28.5 V adjustable output with two external resistors, 1.5 A guaranteed output, 1.3 V typical dropout at 1.5 A, ±1% output tolerance at 25 °C, tube packing (DG), -40 to +125 °C. The TO-220 package is the selection point: the only LD1086 form with a mounting tab for a bolt-on heatsink — essential for sustaining 1.5 A with large input-output drops that would overheat surface-mount versions. Selection advice: the V code is the TO-220 adjustable version — the D2TTR code is D2PAK and PUR is DFN8, so match the full LD1086V-DG code for package. It is pin-to-pin compatible with older 3-terminal adjustable regulators; DG indicates tube packing, not reel. Evidence: ST LD1086 datasheet (Doc ID 6739) and distributor listings confirm 1.5 A, adjustable, TO-220 and tube packing. Match the full LD1086V-DG code. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

LD1086BDTTRSTMicroelectronicsLD1086 · DPAK

LD1086BDTTR is an STMicroelectronics LD1086 adjustable 1.5 A low-dropout regulator — 1.25 to 28.5 V output set by two resistors, up to 30 V input, typical dropout 1.3 V at 1.5 A, ±1% tolerance at 25 °C, in DPAK (TO-252), tape-and-reel packing (TR), -40 to +125 °C. The adjustable output in a compact DPAK is the selection point: one part covers any rail from 1.25 V up with the efficiency advantage that quiescent current flows into the load, unlike PNP LDOs. Selection advice: pin-to-pin compatible with older 3-terminal adjustable regulators per ST, so it upgrades LM317-style layouts — but it is NOT a fixed-voltage part, so confirm the feedback divider values in your BOM. Only a 10 µF minimum output capacitor is needed for stability, and overcurrent plus thermal limits are built in. Evidence: ST LD1086 datasheet and DigiKey listings confirm 1.5 A adjustable, 30 V max input, DPAK and reel packing. Match the full LD1086BDTTR code for output type, package and packing. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

LD1086D2M33TRSTMicroelectronicsLD1086 · D2PAK

LD1086D2M33TR is an STMicroelectronics LD1086 fixed 3.3 V low-dropout regulator — 1.5 A output, up to 30 V input, typical dropout 1.3 V at 1.5 A, ±1% output tolerance at 25 °C, in D2PAK-3, tape-and-reel packing (TR), -40 to +125 °C. Pin-to-pin compatibility with the older 3-terminal adjustable regulators is the selection point: a drop-in upgrade path from classic LM317-style layouts with better dropout and tolerance. Selection advice: the 1.5 A rating needs real copper — size the D2PAK thermal pad and board pours for your actual (Vin − 3.3 V) × Iout dissipation, or the thermal limit will throttle the rail. Only a 10 µF minimum output capacitor is needed for stability, and overcurrent plus thermal protection are built in. Note the automotive grade exists only for adjustable versions in TO-220/DPAK — this fixed 3.3 V D2PAK code is the standard catalog grade. Evidence: ST LD1086 datasheet and distributor listings confirm 1.5 A, 3.3 V fixed, 30 V max input, D2PAK and reel packing. Match the full LD1086D2M33TR code for voltage, package and packing. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

LD1086D2MTRSTMicroelectronicsLD1086 · D2PAK

LD1086D2MTR is an STMicroelectronics 1.5 A low-dropout regulator in D2PAK (TO-263) — adjustable output from 1.25 V set by two external resistors output, 1.5 A guaranteed output, 1.3 V typical dropout at 1.5 A, ±1% output tolerance at 25 °C, over-current and thermal protection, tape-and-reel (TR) packing, -40 to +125 °C. The D2PAK (TO-263) package is the selection point: adjustable. Selection advice: do not substitute another LD1086 package code without checking the footprint. Match the full LD1086D2MTR code for package, output type and packing. Evidence: ST LD1086 datasheet (Doc ID 6739) and distributor listings confirm 1.5 A, adjustable output from 1.25 V set by two external resistors, D2PAK (TO-263) and tape-and-reel (TR) packing. Match the full LD1086D2MTR code. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

LD1086D2TTRSTMicroelectronicsLD1086 · D2PAK

LD1086D2TTR is an STMicroelectronics 1.5 A low-dropout regulator in D2PAK (TO-263) — adjustable output from 1.25 V set by two external resistors output, 1.5 A guaranteed output, 1.3 V typical dropout at 1.5 A, ±1% output tolerance at 25 °C, over-current and thermal protection, tape-and-reel (TR) packing, -40 to +125 °C. The D2PAK (TO-263) package is the selection point: adjustable. Selection advice: do not substitute another LD1086 package code without checking the footprint. Match the full LD1086D2TTR code for package, output type and packing. Evidence: ST LD1086 datasheet (Doc ID 6739) and distributor listings confirm 1.5 A, adjustable output from 1.25 V set by two external resistors, D2PAK (TO-263) and tape-and-reel (TR) packing. Match the full LD1086D2TTR code. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

LD1086DTTRSTMicroelectronicsLD1086 · DPAK

LD1086DTTR is an STMicroelectronics 1.5 A low-dropout regulator in DPAK (TO-252) — adjustable output from 1.25 V set by two external resistors output, 1.5 A guaranteed output, 1.3 V typical dropout at 1.5 A, ±1% output tolerance at 25 °C, over-current and thermal protection, tape-and-reel (TR) packing, -40 to +125 °C. The DPAK (TO-252) package is the selection point: adjustable. Selection advice: do not substitute another LD1086 package code without checking the footprint. Match the full LD1086DTTR code for package, output type and packing. Evidence: ST LD1086 datasheet (Doc ID 6739) and distributor listings confirm 1.5 A, adjustable output from 1.25 V set by two external resistors, DPAK (TO-252) and tape-and-reel (TR) packing. Match the full LD1086DTTR code. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

LD1086PURSTMicroelectronicsLD1086 · DFN8 4x4

LD1086PUR is an STMicroelectronics adjustable 1.5 A low-dropout regulator in DFN8 (4x4, exposed pad) — 1.25 V to 28.5 V adjustable output with two external resistors, 1.5 A guaranteed output, 1.3 V typical dropout at 1.5 A, ±1% output tolerance at 25 °C, 88 dB PSRR at 120 Hz, tape-and-reel packing (UR), -40 to +125 °C. The DFN8 package is the selection point: the smallest LD1086 footprint for dense boards where the exposed pad dumps heat to the PCB — thermal vias under the pad are required for full 1.5 A. Selection advice: the PUR code is the DFN8 adjustable version — the D2TTR code is D2PAK and V-DG is TO-220, so match the full LD1086PUR code for package. It is pin-to-pin compatible with older 3-terminal adjustable regulators, but verify the resistor divider for your target voltage. Evidence: ST LD1086 datasheet (Doc ID 6739) and distributor listings confirm 1.5 A, adjustable, DFN8 and reel packing. Match the full LD1086PUR code. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

L7805CVSTMicroelectronicsLinear voltage regulator · TO-220

5 V 1.5 A positive linear voltage regulator with 2% output tolerance, thermal overload and short-circuit protection, in TO-220. Manufacturer status: active. The L7805 is the archetypal 5 V rail: built-in thermal and short-circuit protection makes it nearly indestructible in the field, which is why it remains the default choice for simple, robust 5 V supplies. Selection advice: the CV suffix denotes this package and grade configuration — the L78 family spans many output voltages and packages that are not interchangeable, so match the full L7805CV code to your footprint. At 1.5 A with a large dropout, heatsinking is mandatory — verify your thermal design, or choose a switching regulator where efficiency matters. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

LM317TSTMicroelectronicsAdjustable voltage regulator · TO-220

ST lists LM317T as ACTIVE — an adjustable three-terminal positive voltage regulator, 1.2 V to 37 V output, TO-220 package. Adjustability is the procurement advantage: one part number covers any rail from 1.2 V to 37 V with two resistors, so it replaces a shelf of fixed-voltage regulators and simplifies spares. Selection advice: the T suffix denotes the TO-220 through-hole package — the LM317 also ships in DPAK, SOT-223 and other SMD packages under different suffixes, so match the full LM317T code to your footprint and heatsinking plan. As a linear regulator, verify input-to-output differential and load current against thermal limits. Parameters verified against the ST official product page. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

Browse all Power Management records Read the alternative review checklist
COMMON QUESTIONS

LD1086V33-DG FAQ

What is the difference between LD1086V33-DG and LD1086BDTTR, LD1086BV-DG, LD1086D2M33TR?

These are order-code variants of the same STMicroelectronics series. They share the core design; the ordering code selects the exact configuration — LD1086BDTTR: Compared with LD1086DT33TR, this code specifies adjustable output and DPAK packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review.; LD1086BV-DG: Compared with LD1086DT33TR, this code specifies adjustable output and TO-220 packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review.; LD1086D2M33TR: Compared with LD1086DT33TR, this code specifies 3.3 V output and D2PAK packaging. An adjustable version needs an external setting network; a package change requires footprint and thermal review.. LD1086V33-DG itself is the TO-220 configuration. A code that differs by even one character may be a different device, so always quote the complete code exactly as it appears on your BOM.

What is the difference between package and packing for LD1086V33-DG?

The package (TO-220) is the physical form of the device itself. Packing describes how the devices are delivered — reel, tube, tray or cut tape. The same ordering code can ship in different packing formats depending on the lot, so confirm the required packing format when you submit your RFQ.

Can you provide traceability documents for LD1086V33-DG?

Traceability evidence — lot and date-code information, labels and photos — is confirmed per lot at quotation time, because it depends on the actual lot offered. Tell us which documents your receiving inspection requires when you submit the RFQ, and we will confirm what can be provided for the offered lot.

How do I request a quotation for LD1086V33-DG?

Add LD1086V33-DG to your RFQ with the complete ordering code, the manufacturer (STMicroelectronics), your quantity, the target packing format and any date-code requirements. We reply to every RFQ within 24 hours.