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LD2981CM33TR The STMicroelectronics LD2981CM33TR is a linear voltage regulator providing a fixed 3.3V output. It features a 100mA output current capability and is housed in a SOT-23-5 package.
Mfr Part #:

LD2981CM33TR

Available from 4 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics LD2981CM33TR is a linear voltage regulator providing a fixed 3.3V output. It features a 100mA output current capability and is housed in a SOT-23-5 package.
✓ Total Stock: 112,557 pcs
$ Price Range: $0.28

LD2981CM33TR Available from 4 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Smaxon Electronics ✓
Non-Authorised Inventory information
67,374 pcs
On Request
67374 pcs On Request 1 On Request On Request 14+ On Request On Request
Fe Components ✓
Non-Authorised Inventory information
42,000 pcs
On Request
42000 pcs On Request 1 On Request On Request On Request On Request On Request
Risen Electronics ✓
Non-Authorised Inventory information
3,000 pcs
On Request
3000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
Optech Co.,Limited ✓
Non-Authorised Inventory information
183 pcs
On Request
183 pcs On Request 1 On Request On Request 21+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

LD2981CM33TR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Features
Current
Mounting Type
Number of Regulators
Operating Temperature
Output Configuration
Output Type
PSRR
Protection Features
SVHC Present
Supplier Device Package
Voltage
Voltage Dropout (Max)
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LD2981CM33TR Description

Short technical summary and product information.

The STMicroelectronics LD2981CM33TR is a linear voltage regulator designed for efficient power management. It delivers a stable 3.3V output voltage with a maximum output current of 100mA. The device operates with an input voltage up to 16V and features a low voltage dropout of 0.375V at 100mA.

 

Key electrical characteristics include a PSRR of 63dB at 1kHz and protection features such as over current and over temperature shutdown. The regulator also includes an enable control pin for power sequencing.

 

This component is supplied in a SOT-23-5 surface mount package, making it suitable for space-constrained applications. The operating temperature range is from -40°C to 125°C, ensuring reliable performance in various environmental conditions.

LD2981CM33TR Quick Information

Product Type: Linear Voltage Regulator
Canonical Name: STMicroelectronics LD2981CM33TR Linear Voltage Regulator
Subcategory: Linear

LD2981CM33TR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LD2981CM33TR Estimated Pricing

Qty Low High
1+ $0.28 $0.28

Estimated market price range - modelled values for guidance only, not live distributor offers.

LD2981CM33TR Features

  • Fixed 3.3V output voltage.
  • 100mA maximum output current.
  • Low 0.375V voltage dropout.
  • SOT-23-5 surface mount package.
  • Wide -40°C to 125°C operating temperature.

LD2981CM33TR Applications

  • Ideal for battery-powered devices.
  • Suitable for portable electronics.
  • Used in power supply circuits.
  • General purpose voltage regulation.

LD2981CM33TR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the output voltage of the LD2981CM33TR?

The output voltage is fixed at 3.3V.

What is the maximum output current?

The maximum output current is 150mA.

What is the dropout voltage?

The maximum dropout voltage is 0.375V at 100mA load.

What is the operating temperature range?

The operating temperature range is -40°C to 125°C.

What package does the LD2981CM33TR come in?

It comes in a SOT-23-5 surface-mount package (also known as SC-74A, SOT-753).

Does the LD2981CM33TR have protection features?

Yes, it includes over-current protection and over-temperature protection.

Does the LD2981CM33TR have an enable pin?

Yes, it has an enable control feature.

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