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STMicroelectronics L4931ABDT33-TR — DC-DC Power Modules
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RoHS Compliant · Lead-Free EIA-481 Standard
STMicroelectronics / DC-DC Power Modules

STMicroelectronics L4931ABDT33-TR LDO, 3.3V fixed, 250mA

MPN L4931ABDT33-TR
End of Life Spot Stock · 24-48h Dispatch 100% Original Sealed

STMicroelectronics L4931ABDT33-TR, linear voltage regulator, fixed 3.3V output, 250mA, 0.8V dropout max, PSRR 73dB~55dB (120Hz~10kHz), -40°C to 125°C, DPAK package, surface mount.

In Stock: 293 pcs
MOQ: 1 pcs
Logistics: DHL / FedEx DAP (Global Express · 3-7d) Russia & CIS DDP (Door-to-Door Cleared)
Dispatch: Shenzhen / HK
Unit Price (USD)
$1.10 / pc
Direct Purchase Ready
Volume Pricing Breaks Confirmed upon quotation
1+ pcs
$1.10
10+ pcs
$0.88
30+ pcs
$0.77
100+ pcs
$0.66
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$1.10 / ea

293 in stock — maximum per order · 3–4 days lead time

$0.88 / ea from 10 pcs
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100% Original Sealed 45x Microscope QC 30-Day Warranty · COC USD T/T & PI · DAP/DDP
[SPEC] Essential Parameters Snapshot Full Specifications (15)
Package / Case TO-252-3, DPak (2 Leads + Tab), SC-63

Full Technical Specifications

15 Parameters
L4931ABDT33-TR specifications
Parameter / AttributeSpecification / Value
Output typeFixed
MountingSurface Mount
Voltage - input20V
Voltage dropout0.8V @ 250mA
Voltage - output (Min (Fixed))3.3V
Output current250mA
Current - supply6 mA
Current - quiescent1 mA
Operating temperature-40°C ~ 125°C
PSRR73dB ~ 55dB (120Hz ~ 10kHz)
PackageTape & Reel (TR); Cut Tape (CT)
CaseTO-252-3, DPak (2 Leads + Tab), SC-63
Protection featuresOver Current, Over Temperature
Number of regulators1
Output configurationPositive
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[01] Emergency Shortage 24-48h Shenzhen Dispatch

Direct access to Shenzhen floor inventory, franchised allocation buffers, and factory bonded stock to resolve line-down shutdowns.

[02] Industrial Packaging Tape & Reel / Tray / Tube

Standard factory-sealed packaging compliant with EIA-481 standards for automated high-speed SMT pick-and-place lines.

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Technical Details & Description

This is moderate — acceptable for always-on automotive modules where the load current dominates, but not the lowest-Iq choice for battery-powered sensors that spend most of their time in sleep.

Protection and packaging for production

Built-in over-current and over-temperature protection allow the LDO to survive output shorts and thermal overload without external clamp diodes.

No official second-source alternate is recorded, but the 250mA fixed-3.3V LDO space includes parts such as the LD39020DTPU33R and LDFPVR, which differ in package, dropout, or feature set and should be evaluated for fit rather than assumed pin-compatible.

Frequently asked questions

Can L4931ABDT33-TR replace L4931ABDT33?

The L4931ABDT33-TR is the tape-and-reel variant of the same base device. Electrically it is identical to the L4931ABDT33; the only difference is the packaging format for automated assembly.

L4931ABDT33-TR
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