LP2951CSDX-3.3/NOPB Equivalent & Substitute Parts

Part Overview

The LP2951CSDX-3.3/NOPB is a linear voltage regulator IC from Texas Instruments designed for positive adjustable (fixed) output applications. This device delivers 100mA output current in an 8-WSON (4x4) surface mount package with integrated protection features including over-current, over-temperature, and short-circuit protection. The part is actively produced and ROHS3 compliant, making it suitable for modern electronic applications requiring regulated 3.3V output. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and component availability across manufacturing cycles.

Substiute Parts

LP2951CSDX-3.3/NOPB

Texas InstrumentsIn Stock: 4916LP2951CSDX-3.3/NOPB Datasheet

Current PartRFQ

LP2951CSD-3.3/NOPB

Texas InstrumentsIn Stock: 18364LP2951CSD-3.3/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP2951CSDX-3.3/NOPB are determined by strict equivalence across the following critical parameters:

• Output voltage fixed at 3.3V
• Output current capability of 100mA
• Maximum input voltage of 30V
• Voltage dropout specification of 0.6V @ 100mA
• 8-WSON (4x4) package configuration
• Surface mount mounting type
• Operating temperature range of -40°C to 125°C
• Integrated protection features (over-current, over-temperature, short-circuit)
• Active product status and ROHS3 compliance

The LP2951CSD-3.3/NOPB meets all these criteria and qualifies as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

Both the LP2951CSDX-3.3/NOPB and LP2951CSD-3.3/NOPB are active products from Texas Instruments with identical electrical and mechanical specifications. Selection between these parts may be based on inventory availability and supply chain considerations. The LP2951CSD-3.3/NOPB currently maintains higher inventory levels (18,300 pcs) compared to the LP2951CSDX-3.3/NOPB (4,900 pcs). Both parts carry ROHS3 compliance, REACH unaffected status, and EAR99 export classification, making them suitable for equivalent substitution in regulated 3.3V output applications requiring 100mA current delivery.

Frequently Asked Questions (FAQ)

Q: Can LP2951CSD-3.3/NOPB be used as a direct replacement for LP2951CSDX-3.3/NOPB?

A: Yes. Both parts share identical electrical specifications, output voltage (3.3V), output current (100mA), package configuration (8-WSON 4x4), and protection features. They are parametric equivalents suitable for direct substitution in circuit designs.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the 8-WDFN Exposed Pad package with 8-WSON (4x4) configuration. Pinout and mechanical dimensions are identical, allowing direct PCB footprint compatibility.

Q: What determines substitutability for the LP2951CSDX-3.3/NOPB?

A: Substitutability is determined by matching output voltage (3.3V fixed), output current (100mA), input voltage rating (30V max), dropout voltage (0.6V @ 100mA), package type (8-WSON 4x4), operating temperature range (-40°C to 125°C), and integrated protection features (over-current, over-temperature, short-circuit).

Q: Are both parts compliant with current environmental and export regulations?

A: Yes. Both LP2951CSDX-3.3/NOPB and LP2951CSD-3.3/NOPB are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes.

Q: What is the moisture sensitivity level for these parts?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.