INA303A3IPW Equivalent & Substitute Parts

Part Overview

The INA303A3IPW is a current sense regulator IC designed for high/low-side current sensing applications. Manufactured by Texas Instruments, this device operates across a 0V to 36V input voltage range and is housed in a 14-TSSOP surface mount package. The part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

INA303A3IPW

Texas InstrumentsIn Stock: 1055INA303A3IPW Datasheet

Current PartRFQ

INA302A2IPW

Texas InstrumentsIn Stock: 2656INA302A2IPW Datasheet

Parametric EquivalentRFQ

INA302A3IPW

Texas InstrumentsIn Stock: 1455INA302A3IPW Datasheet

Parametric EquivalentRFQ

INA303A1IPW

Texas InstrumentsIn Stock: 1232INA303A1IPW Datasheet

Parametric EquivalentRFQ

INA302A1IPW

Texas InstrumentsIn Stock: 1309INA302A1IPW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the INA303A3IPW are qualified based on the following criteria:

• Sensing Method: High/Low-Side capability (identical across all substitutes)
• Input Voltage Range: 0V ~ 36V (identical across all substitutes)
• Operating Temperature: -40°C ~ 125°C (identical across all substitutes)
• Package / Case: 14-TSSOP form factor with 0.173" (4.40mm) width (identical across all substitutes)
• Mounting Type: Surface Mount (identical across all substitutes)
• Compliance: ROHS3 Compliant, MSL 2 (1 Year), REACH Unaffected (identical across all substitutes)

All substitute parts maintain electrical and mechanical compatibility with the original INA303A3IPW specification.

Parameter Comparison

Engineering Selection Recommendations

For new designs and ongoing procurement, INA302A2IPW and INA302A3IPW are the preferred substitutes due to their Active product status, ensuring long-term availability and manufacturer support. Both parts maintain full electrical and mechanical compatibility with the INA303A3IPW across all specified parameters.

INA303A1IPW and INA302A1IPW carry Last Time Buy status, indicating limited future availability. These parts remain functionally equivalent but should be considered only when Active alternatives are unavailable or when existing inventory requirements justify their selection.

All substitute parts maintain ROHS3 compliance and identical MSL ratings, supporting equivalent reliability and handling requirements in manufacturing environments.

Frequently Asked Questions (FAQ)

Q: Can INA302A2IPW directly replace INA303A3IPW in existing designs?

A: Yes. Both parts share identical electrical specifications (0V ~ 36V input, -40°C ~ 125°C operating range, High/Low-Side sensing method) and mechanical form factor (14-TSSOP package). No circuit modifications are required.

Q: What is the difference between INA303 and INA302 base product lines?

A: The provided data specifies only the parameters listed in this document. Both base product lines meet the electrical and mechanical requirements for current sense applications in this specification. Refer to Texas Instruments datasheets for detailed functional differences.

Q: Why is INA303A3IPW marked as obsolete?

A: Product status reflects Texas Instruments' lifecycle management. Obsolete status indicates the part is no longer in active production. Active alternatives (INA302A2IPW, INA302A3IPW) provide equivalent functionality for new designs.

Q: Are all substitute parts available in the same packaging?

A: Yes. All parts listed use 14-TSSOP (0.173", 4.40mm Width) surface mount packaging, ensuring identical PCB footprint compatibility.

Q: Do substitute parts meet the same compliance requirements?

A: Yes. All substitute parts are ROHS3 Compliant, REACH Unaffected, with MSL 2 (1 Year) rating, matching the original INA303A3IPW specifications.