INA303A3IPWR Equivalent & Substitute Parts

Part Overview

The INA303A3IPWR is an active current sense regulator IC designed for high/low-side current sensing applications. Manufactured by Texas Instruments, this Power Management (PMIC) component operates across a 0V to 36V input voltage range and is housed in a 14-TSSOP surface mount package. The device maintains Active product status and is ROHS3 compliant, making it suitable for modern electronic applications requiring current monitoring across diverse voltage domains. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the INA302 and INA303 product families.

Substiute Parts

INA303A3IPWR

Texas InstrumentsIn Stock: 4223INA303A3IPWR Datasheet

Current PartRFQ

INA302A1IPWR

Texas InstrumentsIn Stock: 6272INA302A1IPWR Datasheet

Parametric EquivalentRFQ

INA302A3IPWR

Texas InstrumentsIn Stock: 1569INA302A3IPWR Datasheet

Parametric EquivalentRFQ

INA303A1IPWR

Texas InstrumentsIn Stock: 2694INA303A1IPWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the INA303A3IPWR are qualified based on the following criteria:

Electrical Equivalence: All substitute parts maintain identical input voltage range (0V ~ 36V), operating temperature range (-40°C ~ 125°C), and high/low-side current sensing functionality.

Mechanical Compatibility: All parts use the 14-TSSOP surface mount package with identical physical dimensions (0.173", 4.40mm Width), ensuring direct PCB footprint compatibility.

Regulatory Compliance: All substitute parts maintain ROHS3 compliance, REACH Unaffected status, and MSL 2 (1 Year) moisture sensitivity rating.

Packaging Variants: Substitutes are available in both Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging formats, allowing flexibility in procurement and assembly workflows.

The INA302 and INA303 base product families are cross-compatible within this substitution group, with the A1 and A3 variants representing different performance or application-specific configurations within each family.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain Active product status with ROHS3 compliance and REACH Unaffected certification, confirming long-term availability and regulatory alignment for production applications. Selection between INA302 and INA303 base families should be determined by application-specific requirements not detailed in the provided parameters. The A1 and A3 variants represent distinct configurations; selection should align with circuit design specifications.

Packaging format selection between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® depends on assembly volume and procurement workflow. Tape & Reel packaging is standard for high-volume automated assembly, while Cut Tape & Digi-Reel® supports lower-volume or mixed-component procurement scenarios.

Frequently Asked Questions (FAQ)

Q: Can INA302A1IPWR replace INA303A3IPWR in an existing design?

A: Yes, provided the application does not depend on variant-specific performance characteristics. Both parts share identical electrical specifications (0V ~ 36V input, -40°C ~ 125°C operating range, high/low-side sensing), mechanical compatibility (14-TSSOP package), and regulatory compliance (ROHS3, REACH Unaffected). Verify that the A1 variant meets your circuit design requirements.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel® packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape suitable for high-speed automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel® packaging provides smaller quantities on cut tape segments, typically used for prototyping, low-volume production, or mixed-component orders. Both formats contain identical components in the same 14-TSSOP package.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all parts in this substitution group are ROHS3 compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Q: Can I mix INA302 and INA303 families in the same design?

A: Both families are electrically and mechanically equivalent within the parameters provided. However, verify that variant-specific performance characteristics (A1 vs. A3) align with your circuit requirements before mixing families in production designs.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All parts carry MSL 2 (1 Year) rating, indicating they must be stored in controlled humidity environments and used within one year of packaging opening to maintain reliability.