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INA199C3RSWR Equivalent & Substitute Parts
Part Overview
The INA199C3RSWR is a current sense regulator IC manufactured by Texas Instruments, designed for high/low-side current sensing applications. This Surface Mount device operates across an input voltage range of -0.1V to 26V with ±1% accuracy and is housed in a 10-UQFN (1.8x1.4mm) package. The part is currently Active in product status with 3602 units in stock. Equivalent and substitute parts are identified based on matching electrical specifications, package configuration, and functional characteristics within the INA199 series.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Manufacturer | Texas Instruments |
| Base Product Number | INA199 |
| Function | Current Sense |
| Sensing Method | High/Low-Side |
| Accuracy | ±1% |
| Voltage - Input | -0.1V ~ 26V |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 10-UFQFN |
| Supplier Device Package | 10-UQFN (1.8x1.4) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the INA199C3RSWR are identified within the INA199 series based on the following criteria:
Electrical Equivalence: All substitute parts maintain identical functional specifications including ±1% accuracy, high/low-side sensing capability, and -0.1V to 26V input voltage range.
Package Compatibility: All parts use the 10-UQFN (1.8x1.4mm) Surface Mount package, ensuring mechanical and electrical interchangeability on PCB layouts.
Regulatory Compliance: All parts are ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status.
Variant Differentiation: Substitution variants are distinguished by suffix designations (C1, C2, C3) and packaging codes (RSWR for Tape & Reel, RSWT for alternative packaging). These designations do not alter core electrical performance but may reflect different manufacturing dates, packaging formats, or product lifecycle status.
Parameter Comparison
| Part Number | Manufacturer | Function | Sensing Method | Accuracy | Voltage Input | Operating Temp | Package | Product Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|
| INA199C3RSWR | Texas Instruments | Current Sense | High/Low-Side | ±1% | -0.1V ~ 26V | -40°C ~ 125°C | 10-UQFN (1.8x1.4) | Active | 3602 |
| INA199C1RSWR | Texas Instruments | Current Sense | High/Low-Side | ±1% | -0.1V ~ 26V | -40°C ~ 125°C | 10-UQFN (1.8x1.4) | Active | 5995 |
| INA199C1RSWT | Texas Instruments | Current Sense | High/Low-Side | ±1% | -0.1V ~ 26V | -40°C ~ 125°C | 10-UQFN (1.8x1.4) | Last Time Buy | 2070 |
| INA199C2RSWR | Texas Instruments | Current Sense | High/Low-Side | ±1% | -0.1V ~ 26V | -40°C ~ 125°C | 10-UQFN (1.8x1.4) | Active | 2702 |
| INA199C2RSWT | Texas Instruments | Current Sense | High/Low-Side | ±1% | -0.1V ~ 26V | -40°C ~ 125°C | 10-UQFN (1.8x1.4) | Obsolete | 1015 |
| INA199C3RSWT | Texas Instruments | Current Sense | High/Low-Side | ±1% | -0.1V ~ 26V | -40°C ~ 125°C | 10-UQFN (1.8x1.4) | Last Time Buy | 1782 |
Engineering Selection Recommendations
Primary Selection: INA199C1RSWR and INA199C2RSWR are recommended as primary substitutes. Both maintain Active product status, ensuring long-term availability and manufacturing support. INA199C1RSWR offers the highest inventory level (5995 units), providing supply chain stability.
Secondary Selection: INA199C3RSWR (original part) remains the optimal choice for new designs requiring maximum lifecycle support.
Conditional Selection: INA199C1RSWT and INA199C3RSWT are designated Last Time Buy, indicating limited future availability. INA199C2RSWT is Obsolete and should not be selected for new applications.
Compliance Assurance: All Active and Last Time Buy variants maintain ROHS3 compliance and REACH Unaffected status, meeting current regulatory requirements for electronic component procurement.
Frequently Asked Questions (FAQ)
Q: Are all INA199 variants electrically interchangeable with the INA199C3RSWR?
A: Yes. All listed substitutes share identical electrical specifications: ±1% accuracy, high/low-side sensing capability, -0.1V to 26V input voltage range, and -40°C to 125°C operating temperature. Electrical performance is equivalent across all variants.
Q: What do the suffix designations (C1, C2, C3) represent?
A: The C1, C2, and C3 designations identify different variants within the INA199 series. These designations do not alter core electrical performance or package compatibility. Substitution is based on matching these designations with equivalent variants.
Q: Are RSWR and RSWT packaging codes interchangeable?
A: Both RSWR (Tape & Reel) and RSWT (alternative packaging format) use the identical 10-UQFN (1.8x1.4mm) package. PCB footprints and electrical connections are identical. Packaging code differences reflect supply format only and do not affect circuit performance.
Q: Which substitute part should be selected for long-term production?
A: INA199C1RSWR or INA199C2RSWR are recommended for long-term production due to Active product status. Avoid Last Time Buy (INA199C1RSWT, INA199C3RSWT) and Obsolete (INA199C2RSWT) variants for new designs.
Q: Do all parts meet current regulatory compliance standards?
A: All Active and Last Time Buy variants are ROHS3 Compliant with MSL 1 (Unlimited) and REACH Unaffected status. Obsolete variants maintain the same compliance certifications but are not recommended for new applications due to limited availability.
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