ZLDO330T8TC Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The ZLDO330T8TC is a linear voltage regulator IC manufactured by Diodes Incorporated, designed for positive fixed 3.3V output at 300mA in a surface mount SM8 package. This device provides low dropout regulation with integrated low battery detection and over-temperature protection, suitable for applications requiring stable 3.3V power delivery in compact form factors.

The ZLDO330T8TC is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability for existing applications and new designs.

Substiute Parts

ZLDO330T8TC

Diodes IncorporatedIn Stock: 898ZLDO330T8TC Datasheet

Current PartRFQ

ZLDO330T8TA

Diodes IncorporatedIn Stock: 14667ZLDO330T8TA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ZLDO330T8TC is determined by strict equivalence across the following critical parameters:

• Output voltage: 3.3V fixed
• Output current capability: 300mA
• Maximum input voltage: 20V
• Dropout voltage: 0.2V @ 300mA
• Package: SOT-223-8 (SM8)
• Mounting: Surface mount
• Control and protection features: Low battery detection and over-temperature protection
• Operating temperature range: -40°C to 85°C

Parts meeting all these specifications are classified as parametric equivalents and direct substitutes. Packaging format (Cut Tape vs. other delivery methods) does not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ZLDO330T8TA is a direct parametric equivalent to the ZLDO330T8TC. Both parts are manufactured by Diodes Incorporated and share identical electrical specifications, package configuration, and regulatory compliance certifications (ROHS3, REACH Unaffected).

The primary distinction is product status: ZLDO330T8TC is obsolete, while ZLDO330T8TA is active. For new designs and ongoing production requiring a 3.3V, 300mA linear regulator in SOT-223-8 packaging, the ZLDO330T8TA is the recommended selection. Both parts maintain equivalent performance across all specified operating conditions and environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can ZLDO330T8TA be used as a direct replacement for ZLDO330T8TC?

A: Yes. Both parts are parametric equivalents with identical electrical characteristics, output voltage, current rating, dropout voltage, package type, and protection features. No circuit modifications are required.

Q: What is the difference between ZLDO330T8TC and ZLDO330T8TA?

A: The parts are electrically and mechanically identical. The primary difference is packaging format (Cut Tape for ZLDO330T8TA) and product status (ZLDO330T8TC is obsolete; ZLDO330T8TA is active).

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical RoHS3 compliance, REACH Unaffected status, MSL rating of 1 (Unlimited), and ECCN/HTSUS classifications.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. Both parts use the SOT-223-8 package with identical pinout and mounting requirements for surface mount assembly.

Q: Why is ZLDO330T8TC marked as obsolete?

A: Product obsolescence is determined by the manufacturer based on production lifecycle decisions. ZLDO330T8TA remains in active production and serves the same functional requirements.

Q: What operating temperature range is supported?

A: Both parts operate across -40°C to 85°C, suitable for industrial and commercial applications.

Q: Are there inventory considerations when selecting between these parts?

A: ZLDO330T8TA has significantly higher inventory availability (14,602 pcs) compared to ZLDO330T8TC (885 pcs). For ongoing supply assurance, ZLDO330T8TA is the preferred choice.